Table of Rock Analyses Sample CMU SiO2 Al2O3 Fe2O3 FeO FeOt MgO CaO Na2O K2O TiO2 P2O5 MnO LOI Original FeOt/ Mg# Rb Sr Ba Y Zr Nb Ni Cu Zn Cr Map Map Unit Name Notes Quad Latitude Longitude Latitude Longitude Number Group wt % wt % wt % wt % wt % wt % wt % wt % wt % wt % wt % wt % wt % Sum MgO ppm ppm ppm ppm ppm ppm ppm ppm ppm ppm Unit North West North West Code Symbol deg.-min. deg.-min. dec. degrees dec. degrees LB88-3 RNW-T 55.20 18.40 1.49 5.37 6.71 4.73 8.15 3.78 1.37 1.02 0.37 0.11 0.20 99.51 1.42 61.1 32 641 571 21 156 14 64 55 59 67 mt61 Basaltic andesite of hill 6138 TH 40° 39.14' 121° 32.25' 40.6523 -121.5375 LB88-7 RNW-T 55.68 18.12 1.50 5.42 6.77 4.49 8.04 3.81 1.43 1.03 0.37 0.11 0.39 99.91 1.51 59.6 33 620 554 20 158 13 48 57 59 51 mtu Basaltic andesite of Tumble Buttes TH 40° 40.49' 121° 33.04' 40.6749 -121.5507 LB88-9 RNW-T 56.30 17.92 1.43 5.15 6.44 5.13 7.67 3.64 1.47 0.87 0.30 0.11 0.79 99.32 1.26 64.0 34 557 571 19 148 9 85 52 54 92 mt67 Basaltic andesite of hill 6770 TH 40° 40.53' 121° 33.85' 40.6756 -121.5642 LB90-81B ROC 58.83 17.72 1.33 4.78 5.98 3.84 7.25 3.49 1.75 0.70 0.20 0.10 0.36 99.58 1.56 58.9 49 513 688 27 141 7 44 56 70 72 Tac Andesite of Cal Mountain PL 40° 40.31' 121° 09.90' 40.6718 -121.1650 LB90-82 ROC 58.65 17.60 1.32 4.77 5.96 4.11 7.25 3.36 1.93 0.70 0.20 0.11 0.44 99.41 1.45 60.5 47 493 659 23 144 8 42 71 71 59 Tac Andesite of Cal Mountain PL 40° 40.55' 121° 08.79' 40.6758 -121.1465 LB90-83 ROC 56.30 17.79 1.49 5.36 6.69 5.10 7.95 3.27 1.62 0.78 0.23 0.11 0.34 99.53 1.31 62.9 34 527 558 23 131 8 48 62 78 81 Tmc Basaltic andesite of Cone Mountain PL 40° 41.28' 121° 08.55' 40.6880 -121.1425 LB90-85 ROC 55.95 18.14 1.50 5.41 6.77 5.00 8.07 3.40 1.39 0.79 0.23 0.12 0.28 99.26 1.35 62.2 28 535 599 24 135 10 48 61 74 82 Tmc Basaltic andesite of Cone Mountain HM 40° 41.92' 121° 06.82' 40.6987 -121.1137 LB91-103 ROC 55.41 17.93 1.63 5.86 7.33 4.84 7.71 3.73 1.44 0.99 0.32 0.14 0.15 99.90 1.52 59.5 33 544 23 151 9 50 79 78 msw Basaltic andesites of Swain Mountain SM 40° 25.25' 121° 06.35' 40.4208 -121.1058 LC79-23B LVC-R 67.34 16.25 0.74 2.67 3.33 2.04 3.74 4.42 2.10 0.49 0.14 0.07 1.22 99.35 1.64 57.7 dch Dacite of Christie Hill LP 40° 23.35' 121° 32.54' 40.3892 -121.5424 LC79-45 LVC-R 66.91 17.29 0.86 3.11 3.88 1.88 3.37 3.92 2.03 0.47 0.09 0.06 2.32 97.48 2.06 51.9 dpg Dacite of Plantation Gulch LP 40° 23.14' 121° 33.57' 40.3855 -121.5594 LC79-46 LVC-R 66.55 15.90 0.82 2.97 3.71 2.22 4.72 3.99 2.22 0.45 0.10 0.06 0.45 99.05 1.67 57.1 dmm Dacite of Morgan Mountain MN 40° 22.43' 121° 31.78' 40.3739 -121.5297 LC80-123 LVC-BV 58.99 17.65 1.31 4.71 5.89 3.90 7.19 3.67 1.58 0.73 0.17 0.10 0.14 99.69 1.51 59.6 37 491 512 19 142 5 abf Andesite of Bluff Falls quarry LP 40° 24.87' 121° 31.92' 40.4144 -121.5319 LC80-123A LVC-BV 56.69 17.01 1.43 5.13 6.41 6.50 8.28 3.09 0.99 0.62 0.13 0.14 0.44 99.35 0.99 69.3 abf Andesite of Bluff Falls quarry mafic inclusion LP 40° 24.87' 121° 31.92' 40.4145 -121.5320 LC80-133 RSE 53.05 15.89 1.65 5.94 7.43 9.18 9.33 2.82 0.98 0.81 0.21 0.13 0.02 99.43 0.81 73.4 19.8 447 329 17 113 4 165 66 45 393 mhl Basaltic andesite of Huckleberry Lake LP 40° 24.21' 121° 31.68' 40.4035 -121.5280 LC80-154 LVC-R 66.60 16.19 0.81 2.92 3.64 1.93 4.09 4.38 2.36 0.50 0.16 0.06 0.78 99.12 1.88 54.2 drp Dacite of Rocky Peak LP 40° 24.70' 121° 35.80' 40.4117 -121.5967 LC80-178 LVC-BV 60.35 16.61 1.31 4.70 5.88 3.57 6.02 4.06 2.03 0.96 0.29 0.10 0.68 99.28 1.64 57.5 48 416 622 25 189 9 amc Andesites of Mill Canyon """Andesite of Heart Lake"" in Clynne (1984)" LP 40° 26.00' 121° 35.53' 40.4333 -121.5922 LC80-221 LVC-BV 55.45 15.90 1.52 5.48 6.85 7.78 9.16 2.95 0.82 0.67 0.16 0.12 0.16 99.84 0.88 71.7 22 639 273 16 106 2 amc Andesites of Mill Canyon LP 40° 24.51' 121° 31.05' 40.4085 -121.5175 LC80-224 LVC-BV 59.11 16.85 1.30 4.67 5.84 4.51 6.94 3.73 1.72 0.80 0.27 0.10 0.61 99.65 1.29 63.2 43 534 619 22 162 10 amc Andesites of Mill Canyon LP 40° 24.30' 121° 31.33' 40.4050 -121.5222 LC80-277 RSE 58.06 18.45 1.30 4.69 5.86 4.76 7.46 3.74 0.83 0.51 0.10 0.10 1.04 99.72 1.23 64.4 acc Andesites of Cowslip Campground """Andesite of Turner Mountain"" in Clynne (1984)" LP 40° 23.07' 121° 37.37' 40.3844 -121.6228 LC80-363A LVC-B 56.51 18.70 1.59 5.71 7.14 3.57 7.30 3.85 1.24 1.20 0.21 0.12 0.77 99.02 2.00 52.7 rmz Rhyodacite of Manzanita Chute mafic inclusion MZ 40° 30.26' 121° 35.02' 40.5043 -121.5837 LC80-372 RNW 58.33 18.17 1.36 4.89 6.11 3.88 6.77 3.89 1.52 0.84 0.24 0.11 0.85 99.62 1.58 58.5 34 458 536 22 147 7 ao Andesite of Onion Creek GP 40° 27.88' 121° 41.68' 40.4647 -121.6947 LC80-374 RNW 55.88 15.56 1.46 5.25 6.56 8.03 9.04 2.94 0.94 0.64 0.14 0.12 0.46 99.54 0.82 73.2 18.3 629 289 19 107 3 115 67 48 352 mhr Basaltic andesite of Hootman Ranch """Andesite of Red Lake Mountain"" in Clynne (1984)" GP 40° 28.20' 121° 41.52' 40.4700 -121.6919 LC80-391 LVC-TO 58.96 17.64 1.29 4.65 5.81 3.00 6.73 4.25 1.97 1.06 0.34 0.10 <0.01 99.73 1.94 53.5 46 534 675 25 187 15 av Andesite of Viola LP 40° 29.86' 121° 36.52' 40.4976 -121.6086 LC80-399 LVC-B 68.59 15.93 0.64 2.32 2.89 1.42 3.43 4.36 2.68 0.43 0.12 0.08 0.66 98.80 2.04 52.2 68 364 806 17 163 8 12 5 31 3 rlm Rhyodacite of Loomis Peak MZ 40° 30.11' 121° 33.92' 40.5018 -121.5653 LC80-401 RNW 51.70 17.27 1.82 6.56 8.20 7.09 9.00 3.55 1.07 1.21 0.58 0.13 0.16 100.34 1.16 65.8 19.0 836 500 21 160 9 138 52 75 142 bo Basalt of Onion Springs """Basalt"" (Qbl) in Clynne (1984)" MZ 40° 30.10' 121° 34.13' 40.5017 -121.5689 LC80-402 ROC 54.67 17.49 1.67 6.01 7.51 5.29 7.77 3.89 1.49 1.14 0.45 0.14 0.48 100.16 1.42 61.1 28 528 581 24 171 10 mb Basaltic andesite of Black Cinder Rock """Eastern Basalt"" in Clynne (1984)" RC 40° 27.75' 121° 13.86' 40.4625 -121.2310 LC80-409 LVC-BV 59.25 17.97 1.35 4.86 6.08 3.04 6.39 4.27 1.67 0.83 0.28 0.10 0.51 99.61 2.00 52.7 42 477 588 23 154 5 amc Andesites of Mill Canyon """Andesite of Bailey Creek"" in Clynne (1984)" LP 40° 27.75' 121° 34.92' 40.4625 -121.5819 LC80-410 LVC-BV 58.67 17.47 1.34 4.81 6.02 3.88 7.15 3.88 1.66 0.80 0.25 0.10 0.36 99.56 1.55 58.9 40 466 603 24 164 7 amc Andesites of Mill Canyon """Andesite of Heart Lake"" in Clynne (1984)" LP 40° 27.68' 121° 34.88' 40.4614 -121.5814 LC80-417 LVC-R 64.18 17.10 0.92 3.30 4.13 2.65 5.57 3.93 1.70 0.45 0.12 0.08 0.30 99.78 1.56 58.8 dbc Dacite of Bailey Creek LP 40° 27.98' 121° 34.70' 40.4664 -121.5783 LC80-436 LVC-BV 57.31 17.14 1.47 5.29 6.61 4.20 7.56 3.93 1.60 1.05 0.34 0.11 0.26 100.93 1.58 58.6 36 511 619 25 169 6 amc Andesites of Mill Canyon LP 40° 24.45' 121° 30.77' 40.4075 -121.5128 LC80-436B LVC-BV 55.29 15.83 1.50 5.41 6.76 7.99 9.23 2.97 0.84 0.66 0.16 0.12 0.06 100.44 0.85 72.5 16 653 272 19 99 2 amc Andesites of Mill Canyon LP 40° 24.45' 121° 30.80' 40.4075 -121.5133 LC80-439 LVC-BV 60.08 17.93 1.07 3.84 4.81 4.03 7.25 3.74 1.21 0.62 0.15 0.07 0.94 99.13 1.19 65.2 23 782 300 16 118 3 amc Andesites of Mill Canyon """Andesite of Ski Hill"" in Clynne (1984)" LP 40° 24.97' 121° 31.10' 40.4161 -121.5183 LC80-440 LVC-BV 63.36 17.21 1.03 3.72 4.65 2.75 5.18 4.18 1.68 0.63 0.18 0.08 0.88 99.22 1.69 56.9 amc Andesites of Mill Canyon LP 40° 24.08' 121° 30.80' 40.4014 -121.5133 LC80-446 LVC-BV 67.47 15.81 0.77 2.78 3.48 1.29 3.50 4.37 3.05 0.69 0.21 0.05 0.38 99.62 2.70 45.2 86 374 882 26 221 8 dt Dacite of Twin Meadows LP 40° 28.67' 121° 33.18' 40.4778 -121.5531 LC80-449 LVC-BV 61.56 17.04 1.11 3.99 4.98 3.50 6.06 3.80 1.94 0.73 0.19 0.08 0.36 99.04 1.42 61.0 49 559 576 22 180 8 amd Andesite of Mount Diller LP 40° 28.06' 121° 33.32' 40.4677 -121.5553 LC80-451A LVC-BV 57.85 17.61 1.25 4.50 5.62 5.17 7.84 3.71 1.04 0.73 0.21 0.09 0.02 99.89 1.09 67.2 19 761 312 17 127 5 amc Andesites of Mill Canyon """Andesite of Blue Lake Canyon"" in Clynne (1984)" LP 40° 28.49' 121° 33.75' 40.4749 -121.5624 LC80-451B LVC-BV 54.05 16.62 1.60 5.76 7.19 7.78 9.77 2.84 0.59 0.70 0.13 0.16 0.21 101.10 0.92 70.7 amc Andesites of Mill Canyon gabbroic inclusion in LC80-451A collected from talus LP 40° 28.63' 121° 33.62' 40.4772 -121.5604 LC80-475 LVC-BV 61.49 17.24 1.08 3.90 4.87 3.41 6.21 3.96 1.77 0.69 0.18 0.08 0.60 99.64 1.43 60.9 adc Andesite of Digger Creek GP 40° 26.73' 121° 37.98' 40.4456 -121.6331 LC80-476 RNW 61.63 16.63 1.03 3.70 4.63 4.64 6.74 3.81 0.99 0.60 0.15 0.07 0.15 100.20 1.00 69.1 acs Andesite of Cabin Spring GP 40° 27.68' 121° 37.82' 40.4614 -121.6303 LC80-485 LVC-BV 67.37 16.03 0.78 2.81 3.51 1.35 3.41 4.29 3.01 0.69 0.19 0.06 0.42 98.86 2.60 46.2 89 332 905 24 215 10 dt Dacite of Twin Meadows LP 40° 25.88' 121° 33.53' 40.4314 -121.5589 LC80-489 LVC-BV 60.30 17.41 1.22 4.40 5.50 3.74 6.59 3.72 1.63 0.70 0.18 0.09 0.65 99.83 1.47 60.3 36 438 567 32 156 7 amd Andesite of Mount Diller LP 40° 26.70' 121° 33.71' 40.4450 -121.5652 LC80-495 LVC-BV 59.72 17.18 1.22 4.40 5.50 4.17 6.48 3.93 1.78 0.81 0.22 0.08 1.91 98.27 1.32 62.8 42 469 556 17 143 7 amc Andesites of Mill Canyon """Andesite of Ski Hill"" in Clynne (1984)" LP 40° 27.15' 121° 33.93' 40.4525 -121.5656 LC80-498 LVC-BV 66.05 16.11 0.89 3.19 3.99 1.49 3.99 4.38 2.83 0.78 0.23 0.07 0.49 99.67 2.68 45.4 82 416 778 27 204 9 dt Dacite of Twin Meadows LP 40° 26.98' 121° 34.48' 40.4497 -121.5747 LC80-504 MVC 64.90 16.10 0.87 3.15 3.94 2.97 5.59 3.86 1.77 0.60 0.14 0.05 1.34 99.11 1.33 62.7 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" MN 40° 21.60' 121° 37.48' 40.3600 -121.6247 LC80-527 LVC-BV 61.33 17.52 1.08 3.88 4.85 3.43 6.39 3.95 1.52 0.63 0.17 0.08 0.25 99.73 1.41 61.2 34 754 449 19 150 6 adc Andesite of Digger Creek LP 40° 26.98' 121° 34.78' 40.4497 -121.5797 LC80-533 LVC-R 63.72 17.64 0.87 3.14 3.92 2.46 5.57 4.35 1.53 0.53 0.13 0.06 0.20 99.54 1.59 58.3 drr Dacite of Red Rock Mountain LP 40° 28.23' 121° 37.08' 40.4704 -121.6181 LC80-534 LVC-B 69.26 15.99 0.57 2.05 2.56 1.06 2.78 4.43 3.24 0.46 0.11 0.05 1.81 98.17 2.41 48.0 rmz Rhyodacite of Manzanita Chute """Rhyodacite of Manzanita"" in Clynne (1984)" MZ 40° 30.58' 121° 34.65' 40.5097 -121.5775 LC80-537 RSE 51.20 17.30 1.86 6.68 8.36 8.15 8.97 3.38 0.85 1.13 0.32 0.16 0.26 100.16 1.03 68.5 13.4 504 410 23 138 9 135 64 56 262 bcc Basalts of Cold Creek Butte LY 40° 21.02' 121° 37.67' 40.3503 -121.6278 LC80-542 LVC-BV 61.53 17.64 1.06 3.83 4.79 3.35 6.40 3.71 1.56 0.64 0.18 0.08 0.26 100.21 1.43 60.9 37 763 463 20 153 6 amd Andesite of Mount Diller unmapped dike of amd in amc LP 40° 27.67' 121° 33.33' 40.4611 -121.5556 LC81-559 LVC-R 69.68 15.54 0.63 2.27 2.83 1.24 3.33 4.08 2.65 0.42 0.11 0.05 2.41 97.41 2.30 49.3 pr Rockland tephra FB 40° 20.79' 121° 45.56' 40.3465 -121.7593 LC81-561 DVC 61.91 17.28 1.08 3.89 4.87 3.05 5.67 3.73 2.37 0.72 0.21 0.08 1.29 98.79 1.60 58.3 52 428 707 19 171 6 ads Andesite of Domingo Spring ST 40° 21.82' 121° 20.93' 40.3636 -121.3489 LC81-576 DVC 62.33 17.19 1.03 3.69 4.61 3.19 6.03 3.67 2.12 0.52 0.14 0.08 0.36 99.87 1.45 60.6 55 456 604 18 132 2 ad2 "Andesites of Dittmar Volcanic Center, Stage 2, undivided" MH 40° 23.03' 121° 21.28' 40.3839 -121.3547 LC81-612 DVC 58.00 15.16 1.49 5.36 6.70 7.06 7.43 3.25 1.25 0.71 0.18 0.11 0.63 99.55 0.95 70.1 28 459 399 23 128 4 Tad "Andesites of Dittmar Volcanic Center, Stage 1, undivided" MH 40° 24.45' 121° 19.91' 40.4075 -121.3313 LC81-629 LVC-R 65.90 16.30 0.83 3.00 3.75 2.22 4.50 4.24 2.27 0.48 0.19 0.07 0.01 99.73 1.69 56.9 52 502 791 15 156 5 dfr Dacite of Flatiron Ridge MH 40° 26.18' 121° 21.52' 40.4364 -121.3586 LC81-633 DVC 58.13 17.26 1.33 4.77 5.97 4.54 7.92 3.44 1.62 0.69 0.19 0.10 0.46 99.61 1.31 62.9 35 521 606 20 137 3 ad2 "Andesites of Dittmar Volcanic Center, Stage 2, undivided" MH 40° 24.35' 121° 19.88' 40.4059 -121.3313 LC81-637 DVC 68.36 14.87 0.88 3.16 3.95 1.10 3.09 4.59 2.77 0.86 0.22 0.11 2.91 97.18 3.57 38.4 43 260 759 38 223 3 Tad "Andesites of Dittmar Volcanic Center, Stage 1, undivided" MH 40° 24.87' 121° 20.43' 40.4144 -121.3406 LC81-646 RSE 56.45 17.64 1.45 5.20 6.50 5.10 8.01 3.65 1.23 0.85 0.30 0.12 0.27 99.78 1.28 63.6 23.5 582 509 21 141 7 69 55 54 89 bsm Basalts and basaltic andesites of Sifford Mountain RP 40° 23.68' 121° 23.80' 40.3947 -121.3967 LC81-649 RSE 51.52 16.81 1.79 6.45 8.06 8.68 9.24 3.23 0.85 1.02 0.27 0.14 <0.01 100.08 0.93 70.6 16.6 452 342 20 121 8 167 61 52 339 bsm Basalts and basaltic andesites of Sifford Mountain ST 40° 21.45' 121° 21.42' 40.3575 -121.3569 LC81-659 LVC-R 73.50 13.91 0.43 1.56 1.95 0.88 1.97 3.98 3.36 0.28 0.08 0.05 0.51 99.36 2.22 50.0 88 220 849 15 135 8 rr Rhyolite of Raker Peak collected from talus WP 40° 31.47' 121° 28.57' 40.5244 -121.4761 LC81-659A LVC-R 57.52 19.07 1.35 4.86 6.07 3.65 8.17 3.42 1.08 0.65 0.12 0.10 0.46 100.16 1.66 57.3 33 784 270 20 104 5 rr Rhyolite of Raker Peak "mafic inclusion, collected from talus" WP 40° 31.47' 121° 28.57' 40.5245 -121.4762 LC81-660 LVC-E 69.65 15.59 0.57 2.04 2.55 1.48 3.19 4.23 2.75 0.35 0.10 0.05 0.60 99.01 1.73 56.3 72 336 770 14 133 7 rsf Domes [Rhyodacite of Sunflower Flat] MZ 40° 33.40' 121° 31.77' 40.5567 -121.5294 LC81-661 LVC-E 68.12 15.80 0.70 2.51 3.14 1.71 3.93 4.14 2.51 0.41 0.11 0.06 0.09 99.67 1.84 54.8 69 347 722 14 128 5 rcc Dome C [Rhyodacite of Chaos Crags] collected from Chaos Jumbles (Qsj) MZ 40° 32.55' 121° 32.32' 40.5425 -121.5386 LC81-661A LVC-E 55.64 18.35 1.58 5.70 7.13 4.40 9.01 3.06 1.37 0.66 0.09 0.13 0.05 100.39 1.62 57.9 38 503 270 18 91 1 rcc Dome C [Rhyodacite of Chaos Crags] mafic inclusion collected from Chaos Jumbles (Qsj) MZ 40° 32.55' 121° 32.32' 40.5425 -121.5386 LC81-670 LVC-TY 66.14 16.41 0.75 2.70 3.38 2.16 4.63 4.17 2.37 0.47 0.14 0.06 0.25 99.64 1.56 58.8 67 411 669 16 136 6 pw2 "Pyroclastic flow and associated fluid debris-flow deposits, May 22 [Deposits of the 1914–1917 eruption of Lassen Peak]" "light dacite (Clynne, 1999)" WP 40° 30.48' 121° 28.92' 40.5080 -121.4820 LC81-671 LVC-TY 59.65 17.79 1.20 4.33 5.41 4.09 6.79 3.74 1.53 0.65 0.14 0.09 0.06 100.56 1.32 62.7 45 518 446 21 107 7 pw2 "Pyroclastic flow and associated fluid debris-flow deposits, May 22 [Deposits of the 1914–1917 eruption of Lassen Peak]" "mafic inclusion, light dacite (Clynne, 1999)" WP 40° 30.48' 121° 28.92' 40.5080 -121.4820 LC81-675 LVC-BV 62.59 16.73 1.08 3.90 4.87 3.30 5.31 3.83 2.33 0.67 0.18 0.08 0.44 99.64 1.48 60.1 60 423 723 20 198 8 amz Andesite of Manzanita Creek MZ 40° 32.00' 121° 35.61' 40.5333 -121.5935 LC81-678 LVC-BV 61.55 16.80 1.14 4.09 5.11 3.48 5.69 4.06 2.17 0.72 0.22 0.08 0.76 99.23 1.47 60.3 52 444 683 24 193 7 amd Andesite of Mount Diller LP 40° 27.90' 121° 30.78' 40.4650 -121.5131 LC81-683A LVC-B 67.55 16.36 0.67 2.43 3.04 1.71 3.99 4.17 2.52 0.41 0.13 0.06 0.32 99.31 1.78 55.6 dr Dacite of Reading Peak RP 40° 28.11' 121° 26.49' 40.4685 -121.4415 LC81-683B LVC-B 59.49 18.96 1.12 4.04 5.05 3.48 7.04 3.83 1.27 0.56 0.11 0.09 0.81 99.62 1.45 60.5 34 526 405 19 95 4 dr Dacite of Reading Peak mafic inclusion RP 40° 28.11' 121° 26.49' 40.4685 -121.4415 LC81-692 LVC-B 65.07 17.05 0.81 2.91 3.64 1.96 4.80 4.27 2.28 0.54 0.24 0.07 0.35 99.45 1.86 54.5 dr Dacite of Reading Peak RP 40° 28.87' 121° 28.14' 40.4812 -121.4690 LC81-694 LVC-B 69.09 15.77 0.59 2.14 2.68 1.45 3.35 4.33 2.73 0.37 0.10 0.07 0.05 99.82 1.85 54.6 74 344 811 16 156 8 rmc Rhyodacite of Mount Conard """Rhyodacite of Loomis"" in Clynne (1984)" RP 40° 28.75' 121° 28.26' 40.4792 -121.4710 LC81-696 LVC-B 68.30 16.05 0.64 2.32 2.90 1.61 3.92 4.06 2.54 0.38 0.11 0.07 0.07 99.97 1.79 55.4 66 353 735 19 154 9 dr Dacite of Reading Peak RP 40° 28.66' 121° 27.82' 40.4777 -121.4637 LC81-706 LVC-B 67.31 16.40 0.72 2.60 3.25 1.66 3.78 4.37 2.53 0.44 0.12 0.06 0.20 99.68 1.96 53.2 67 371 729 14 139 6 dr Dacite of Reading Peak RP 40° 28.70' 121° 26.97' 40.4783 -121.4494 LC81-707 LVC-B 57.68 19.49 1.17 4.23 5.28 3.98 7.93 3.77 0.99 0.57 0.10 0.09 0.04 99.99 1.33 62.7 14 571 323 16 84 2 dr Dacite of Reading Peak mafic inclusion RP 40° 28.70' 121° 26.97' 40.4783 -121.4494 LC81-710 LVC-TY 57.97 17.61 1.34 4.83 6.03 4.37 8.11 3.57 1.26 0.69 0.14 0.11 0.41 99.90 1.38 61.7 28 471 385 19 116 4 ah Andesite of Hat Mountain RP 40° 28.32' 121° 24.35' 40.4719 -121.4058 LC81-710A LVC-TY 54.85 17.41 1.68 6.06 7.57 5.22 9.56 3.05 0.87 0.95 0.21 0.14 0.25 100.03 1.45 60.6 ah Andesite of Hat Mountain mafic inclusion RP 40° 28.32' 121° 24.35' 40.4720 -121.4058 LC81-720 RSE 52.98 17.06 1.73 6.22 7.78 7.14 8.62 3.63 1.05 1.10 0.33 0.13 <0.01 100.35 1.09 67.2 18.3 568 464 19 138 7 120 59 56 161 bsm Basalts and basaltic andesites of Sifford Mountain MH 40° 26.14' 121° 22.46' 40.4357 -121.3743 LC81-723 LVC-B 67.10 16.06 0.75 2.72 3.39 2.05 4.31 4.10 2.31 0.42 0.11 0.06 0.78 98.65 1.65 57.4 61 385 640 17 125 7 Qs82 Avalanche deposit from dacite of hill 8283 MZ 40° 32.50' 121° 34.81' 40.5417 -121.5802 LC81-724 LVC-E 70.86 15.68 0.50 1.78 2.23 0.96 2.60 4.29 2.84 0.33 0.11 0.05 2.62 97.14 2.32 49.0 75 305 796 16 140 9 pe Pumiceous pyroclastic-flow deposits [Rhyodacite of Eagle Peak] MZ 40° 32.67' 121° 34.63' 40.5444 -121.5771 LC81-724A LVC-E 56.79 18.76 1.34 4.83 6.04 4.08 7.99 3.77 1.26 0.84 0.22 0.10 1.52 98.60 1.48 60.1 pe Pumiceous pyroclastic-flow deposits [Rhyodacite of Eagle Peak] mafic inclusion MZ 40° 32.68' 121° 34.61' 40.5446 -121.5768 LC81-727 LVC-E 69.01 16.10 0.58 2.08 2.60 1.50 3.23 4.27 2.70 0.37 0.11 0.05 1.97 97.75 1.74 56.2 73 355 740 13 139 6 psf Pumiceous pyroclastic-flow deposits [Rhyodacite of Sunflower Flat] MZ 40° 32.55' 121° 31.25' 40.5625 -121.5208 LC81-731 LVC-E 70.24 15.56 0.54 1.95 2.43 1.21 2.92 4.32 2.74 0.36 0.11 0.05 1.59 97.88 2.01 52.5 69 326 810 14 141 6 dl Dome [Dacite of Lassen Peak] collected from talus RP 40° 29.76' 121° 28.97' 40.4960 -121.4828 LC81-733 LVC-E 68.28 15.96 0.63 2.28 2.85 1.83 3.64 4.24 2.59 0.39 0.11 0.05 0.39 99.26 1.56 58.8 67 375 710 12 134 3 rkr Rhyodacite of Krummholz MZ 40° 30.22' 121° 30.02' 40.5036 -121.5003 LC81-736 LVC-E 69.34 15.75 0.56 2.02 2.53 1.47 3.29 4.37 2.68 0.36 0.10 0.05 0.52 99.30 1.71 56.5 76 349 749 15 138 6 rkr Rhyodacite of Krummholz WP 40° 30.23' 121° 29.92' 40.5119 -121.4986 LC81-739 LVC-TY 64.71 16.58 0.89 3.21 4.01 2.65 4.95 4.06 2.19 0.53 0.14 0.07 0.44 99.25 1.51 59.5 57 409 618 17 118 6 25 20 48 24 pw2 "Pyroclastic flow and associated fluid debris-flow deposits, May 22 [Deposits of the 1914–1917 eruption of Lassen Peak]" "light dacite (Clynne, 1999)" RP 40° 29.84' 121° 29.17' 40.4974 -121.4861 LC81-741 RSE 51.81 16.43 1.96 7.05 8.81 5.58 9.03 4.03 1.54 1.69 0.74 0.14 <0.01 99.99 1.58 58.5 36 1114 713 26 199 14 50 44 82 66 amh Andesite and basalt of Mount Harkness """Basalt of Mount Harkness"" in Clynne (1984)" MH 40° 26.18' 121° 18.12' 40.4364 -121.3019 LC81-747 DVC 62.08 16.71 1.09 3.92 4.90 3.67 5.95 3.37 2.30 0.63 0.19 0.09 0.14 99.18 1.34 62.5 58 443 771 19 156 6 ad2 "Andesites of Dittmar Volcanic Center, Stage 2, undivided" MH 40° 26.92' 121° 19.22' 40.4486 -121.3203 LC81-753 LVC-TY 60.46 16.91 1.15 4.14 5.18 4.00 6.54 3.86 1.82 0.77 0.24 0.09 0.86 99.19 1.29 63.3 43 488 629 21 142 7 ac Andesite of Crater Butte MH 40° 28.65' 121° 20.17' 40.4775 -121.3361 LC81-758 DVC 62.92 16.67 1.00 3.60 4.50 3.29 5.55 3.55 2.61 0.55 0.17 0.08 1.09 98.78 1.37 62.0 68 419 739 22 148 8 ad2 "Andesites of Dittmar Volcanic Center, Stage 2, undivided" MH 40° 26.13' 121° 19.37' 40.4356 -121.3228 LC81-765 LVC-E 70.33 15.53 0.53 1.89 2.37 1.16 2.87 4.40 2.78 0.36 0.11 0.05 1.44 98.75 2.04 52.1 74 327 805 14 138 6 pk Pumiceous pyroclastic-flow deposits [Rhyodacite of Kings Creek] small unmapped outcrop RP 40° 27.63' 121° 27.81' 40.4605 -121.4636 LC81-775 RNW 55.76 18.01 1.51 5.43 6.79 4.68 7.72 3.65 1.69 1.06 0.37 0.12 0.26 99.96 1.45 60.5 33 569 651 22 190 11 mr Basaltic andesite of Rock Spring GP 40° 27.45' 121° 40.57' 40.4576 -121.6762 LC81-790 RNW 54.28 16.05 1.55 5.59 6.99 9.14 8.47 3.26 0.68 0.72 0.13 0.13 <0.01 100.29 0.76 74.4 15.3 393 262 17 84 2 136 49 44 424 mcf Basaltic andesites of Camp Forward GP 40° 27.35' 121° 44.02' 40.4558 -121.7336 LC81-797 LVC-BV 58.08 18.04 1.31 4.71 5.89 3.88 7.26 3.82 1.74 0.82 0.23 0.10 0.79 99.18 1.52 59.5 44 515 589 23 146 6 amc Andesites of Mill Canyon """Andesite of Ski Hill"" in Clynne (1984)" LP 40° 26.70' 121° 31.08' 40.4450 -121.5181 LC81-798 LVC-TO 57.25 17.48 1.40 5.03 6.28 3.98 7.52 4.02 1.79 1.11 0.32 0.11 <0.01 100.12 1.58 58.5 46 522 599 24 180 11 av Andesite of Viola VI 40° 31.75' 121° 38.47' 40.5292 -121.6411 LC81-801 LVC-B 65.46 16.42 0.85 3.06 3.83 2.44 4.73 3.94 2.31 0.55 0.16 0.07 0.52 99.02 1.57 58.7 57 415 747 20 164 6 dh Dacite of Mt. Helen LP 40° 28.39' 121° 30.26' 40.4731 -121.5043 LC81-802 LVC-B 58.62 17.96 1.28 4.59 5.74 4.43 7.34 3.50 1.31 0.72 0.16 0.10 0.61 99.62 1.30 63.2 31 531 507 18 118 5 dh Dacite of Mt. Helen mafic inclusion LP 40° 28.39' 121° 30.26' 40.4731 -121.5043 LC81-807 RSE 48.75 18.06 1.53 7.83 9.21 8.63 11.03 2.81 0.17 0.91 0.11 0.16 0.19 100.55 1.07 66.3 0 230 103 19 74 1 136 93 46 190 bic Tholeiitic basalt of Ice Cave Mountain CM 40° 15.52' 121° 23.12' 40.2586 -121.3853 LC81-808 MVC 66.36 16.18 0.76 2.74 3.43 2.24 4.21 3.82 3.04 0.47 0.11 0.06 1.56 98.55 1.53 59.3 88 330 879 19 156 4 rg Rhyodacite of Gurnsey Creek CM 40° 17.40' 121° 25.30' 40.2900 -121.4217 LC81-809 MVC 69.30 16.03 0.60 2.16 2.70 1.31 3.01 3.59 3.48 0.39 0.09 0.04 0.86 98.80 2.07 51.9 107 279 947 21 154 6 rg Rhyodacite of Gurnsey Creek CM 40° 18.20' 121° 25.25' 40.3033 -121.4208 LC81-810 LVC-B 64.44 16.84 0.87 3.14 3.92 2.66 5.19 4.07 2.03 0.52 0.16 0.08 0.09 100.13 1.48 60.1 51 521 607 20 146 6 db Dacite of Bumpass Mountain LP 40° 27.88' 121° 30.28' 40.4647 -121.5047 LC81-811 LVC-E 70.28 15.27 0.55 1.99 2.49 1.30 3.10 4.31 2.66 0.36 0.11 0.05 0.50 99.11 1.91 53.8 73 359 782 16 134 9 rk Flows [Rhyodacite of Kings Creek] RP 40° 28.23' 121° 29.48' 40.4706 -121.4914 LC81-813 LVC-E 70.59 15.43 0.53 1.91 2.39 1.13 2.75 4.30 2.83 0.36 0.11 0.05 2.07 97.39 2.11 51.3 pk Pumiceous pyroclastic-flow deposits [Rhyodacite of Kings Creek] WP 40° 30.80' 121° 27.82' 40.5133 -121.4637 LC81-813A LVC-E 69.70 15.87 0.58 2.07 2.59 1.25 2.94 4.35 2.68 0.40 0.11 0.05 2.00 97.92 2.07 51.8 72 326 825 15 138 8 pk Pumiceous pyroclastic-flow deposits [Rhyodacite of Kings Creek] WP 40° 30.80' 121° 27.82' 40.5133 -121.4637 LC81-813C LVC-E 69.29 16.28 0.57 2.05 2.56 1.27 3.05 4.31 2.62 0.39 0.11 0.06 2.46 96.05 2.01 52.5 69 341 805 14 143 10 pk Pumiceous pyroclastic-flow deposits [Rhyodacite of Kings Creek] WP 40° 30.80' 121° 27.82' 40.5133 -121.4637 LC81-813D LVC-E 70.45 15.47 0.52 1.88 2.35 1.16 2.88 4.38 2.75 0.36 0.10 0.05 1.35 98.44 2.02 52.4 72 325 805 16 142 8 pk Pumiceous pyroclastic-flow deposits [Rhyodacite of Kings Creek] WP 40° 30.80' 121° 27.82' 40.5133 -121.4637 LC81-814 RNW 58.30 16.54 1.43 5.15 6.44 5.56 7.38 3.47 1.15 0.74 0.17 0.10 0.60 99.70 1.16 65.8 22 426 388 29 122 1 am "Older regional andesites and basaltic andesites, undivided" GP 40° 28.02' 121° 44.57' 40.4669 -121.7428 LC81-820 LVC-E 72.86 14.65 0.42 1.50 1.87 0.78 2.27 4.12 3.03 0.26 0.07 0.04 1.97 97.75 2.40 48.1 91 264 764 18 114 6 pe Pumiceous pyroclastic-flow deposits [Rhyodacite of Eagle Peak] GP 40° 26.94' 121° 42.79' 40.4490 -121.7132 LC81-822 LVC-BV 62.08 18.39 1.00 3.58 4.48 3.46 5.66 3.71 1.33 0.57 0.13 0.08 2.91 97.19 1.29 63.2 28 639 659 20 146 6 adc Andesite of Digger Creek collected from debris flow deposit Qwb GP 40° 27.05' 121° 43.32' 40.4508 -121.7161 LC81-828 RNW 54.40 16.89 1.43 5.14 6.43 7.31 9.37 3.44 0.79 0.87 0.24 0.11 <0.01 100.02 0.88 71.7 13.1 1060 303 18 129 5 107 55 45 213 mrd Basaltic andesite and andesite of Red Lake Mountain """Andesite of Red Lake Mountain"" in Clynne (1984)" MZ 40° 32.45' 121° 36.27' 40.5411 -121.6046 LC81-835 LVC-BV 61.85 17.30 1.07 3.85 4.82 3.33 5.92 3.99 1.74 0.67 0.19 0.08 0.37 99.86 1.45 60.6 38 595 530 20 164 2 adc Andesite of Digger Creek GP 40° 28.65' 121° 37.95' 40.4775 -121.6325 LC81-840 LVC-TY 64.64 16.76 0.87 3.13 3.91 2.61 4.91 4.18 2.18 0.51 0.13 0.07 0.04 99.97 1.50 59.8 58 434 657 15 121 6 28 19 34 26 d9 "Dacite flow, May 19–20 [Deposits of the 1914–1917 eruption of Lassen Peak]" "black dacite (Clynne, 1999)" LP 40° 29.35' 121° 30.25' 40.4892 -121.5042 LC81-841 LVC-TY 64.69 16.77 0.87 3.13 3.91 2.66 4.96 4.07 2.14 0.50 0.13 0.07 0.16 99.90 1.47 60.2 59 432 616 13 120 3 24 21 36 20 pw2 "Pyroclastic flow and associated fluid debris-flow deposits, May 22 [Deposits of the 1914–1917 eruption of Lassen Peak]" "light dacite (Clynne, 1999), overlies lava flow unit d9" LP 40° 29.35' 121° 30.25' 40.4892 -121.5042 LC81-843 LVC-TY 59.16 18.15 1.18 4.26 5.32 4.16 6.82 3.92 1.49 0.63 0.14 0.09 <0.01 100.21 1.28 63.5 40 539 448 15 107 4 53 36 38 58 d9 "Dacite flow, May 19–20 [Deposits of the 1914–1917 eruption of Lassen Peak]" "mafic inclusion in black dacite (Clynne, 1999)" LP 40° 29.23' 121° 30.47' 40.4872 -121.5078 LC81-844 LVC-E 56.21 18.67 1.51 5.43 6.79 4.32 8.79 3.18 0.97 0.68 0.12 0.11 0.10 100.23 1.57 58.6 58 423 640 17 127 6 dl Dome [Dacite of Lassen Peak] mafic inclusion collected from talus LP 40° 28.93' 121° 30.23' 40.4822 -121.5039 LC81-845 LVC-E 69.13 15.74 0.61 2.21 2.76 1.49 3.42 4.18 2.62 0.40 0.13 0.06 2.15 97.44 1.85 54.6 67 369 759 15 133 7 pk Pumiceous pyroclastic-flow deposits [Rhyodacite of Kings Creek] LP 40° 28.53' 121° 30.30' 40.4756 -121.5049 LC81-846 LVC-TY 60.52 17.84 1.11 3.99 4.99 3.65 6.29 4.06 1.68 0.62 0.15 0.09 0.06 100.24 1.37 62.0 47 484 489 15 113 5 49 37 50 62 w2 "Viscous debris-flow deposits, May 22 [Deposits of the 1914–1917 eruption of Lassen Peak]" "dark andesite (Clynne, 1999)" WP 40° 30.83' 121° 27.92' 40.5139 -121.4653 LC81-847 RNW 61.39 16.71 1.23 4.41 5.52 3.54 6.08 3.72 1.87 0.66 0.28 0.11 0.09 98.86 1.56 58.9 39 449 781 24 175 5 at Andesite of Table Mountain MZ 40° 34.20' 121° 31.63' 40.5700 -121.5272 LC81-849 LVC-TY 57.48 17.07 1.41 5.08 6.35 5.12 8.16 3.38 1.20 0.83 0.15 0.11 0.44 99.55 1.24 64.3 32 376 407 18 114 2 a74 Andesite of hill 7416 OS 40° 37.90' 121° 22.60' 40.6317 -121.3767 LC82-879 ROC 52.71 17.81 1.82 6.55 8.19 6.22 8.34 3.61 1.22 1.20 0.37 0.14 0.19 99.56 1.32 62.9 20.0 525 533 25 146 9 Tbm Basalts and basaltic andesites of Mud Creek Rim CH 40° 21.26' 121° 12.19' 40.3543 -121.2031 LC82-886 ROC 52.29 17.13 1.82 6.56 8.20 7.79 8.73 3.24 1.01 1.01 0.29 0.14 <0.01 99.97 1.05 67.9 16.3 436 391 20 120 4 148 72 55 309 bhr Basaltic plug near Heckle Ranch RC 40° 24.39' 121° 10.66' 40.4065 -121.1777 LC82-892 CVF-C 55.21 19.35 1.55 5.59 6.99 4.27 8.25 3.67 0.99 0.82 0.17 0.12 0.30 99.33 1.64 57.7 23 691 369 21 116 4 mee2 Unit 2 [Basaltic andesites of Echo Lake] RC 40° 25.61' 121° 09.31' 40.4268 -121.1552 LC82-898 CVF-C 54.71 19.68 1.48 5.33 6.67 5.04 8.72 3.28 0.92 0.63 0.09 0.12 0.13 99.65 1.32 62.7 20 625 326 18 91 1 mc8 Unit 8 [Basaltic andesites of Silver Lake] RC 40° 29.42' 121° 07.73' 40.4903 -121.1622 LC82-905 CVF-P 50.36 17.73 1.87 6.74 8.43 8.43 9.79 3.02 0.65 0.99 0.25 0.16 0.43 99.43 1.00 69.0 7.3 409 285 23 113 10 149 75 54 301 bs1 Unit 1 [Basalts of Stephens Campground] BB 40° 32.47' 121° 09.20' 40.5411 -121.1533 LC82-911 LVC-TY 58.96 17.25 1.27 4.59 5.74 4.21 7.97 3.44 1.38 0.67 0.16 0.10 0.71 99.05 1.36 62.1 27 515 394 15 114 2 ah Andesite of Hat Mountain RP 40° 29.71' 121° 24.64' 40.4952 -121.4106 LC82-915 LVC-E 70.00 15.60 0.52 1.89 2.36 1.22 3.14 4.46 2.63 0.35 0.11 0.07 0.94 98.92 1.94 53.4 68 357 780 13 134 8 rk Flows [Rhyodacite of Kings Creek] RP 40° 28.55' 121° 28.60' 40.4758 -121.4767 LC82-928 RSE 57.86 17.31 1.43 5.14 6.42 4.79 6.97 3.67 1.50 0.88 0.34 0.12 0.02 99.94 1.34 62.4 32 517 611 24 164 7 amh Andesite and basalt of Mount Harkness MH 40° 24.60' 121° 18.42' 40.4099 -121.3071 LC82-940 DVC 63.64 16.82 0.95 3.42 4.28 3.04 5.72 3.46 2.17 0.55 0.15 0.08 0.15 99.05 1.41 61.3 57 552 655 18 146 4 ad2 "Andesites of Dittmar Volcanic Center, Stage 2, undivided" MH 40° 23.10' 121° 18.27' 40.3851 -121.3045 LC82-970 RSE 48.33 17.38 1.54 7.87 9.26 9.78 11.18 2.53 0.16 0.96 0.10 0.17 <0.01 101.01 0.95 68.9 2.3 239 76 26 75 1 145 119 41 298 bwv Tholeiitic basalt of Warner Valley MH 40° 23.44' 121° 18.29' 40.3907 -121.3048 LC82-992 DVC 57.13 16.84 1.46 5.26 6.58 6.35 7.67 3.01 1.33 0.69 0.14 0.11 0.16 99.13 1.04 68.3 30 391 443 18 116 3 Tad "Andesites of Dittmar Volcanic Center, Stage 1, undivided" MH 40° 25.86' 121° 19.58' 40.4310 -121.3263 LC82-100 RSE 52.46 15.96 1.95 7.03 8.78 5.66 8.97 3.85 1.44 1.67 0.85 0.14 0.15 99.12 1.55 59.0 22.0 1170 567 22 192 12 58 47 88 94 amh Andesite and basalt of Mount Harkness MH 40° 24.80' 121° 17.51' 40.4134 -121.2918 LC82-107 DVC 56.21 16.88 1.52 5.48 6.85 6.72 8.10 2.94 1.21 0.68 0.13 0.12 0.12 99.52 1.02 68.6 27 379 429 19 108 3 Tad "Andesites of Dittmar Volcanic Center, Stage 1, undivided" MH 40° 25.72' 121° 19.88' 40.4287 -121.3313 LC82-132 DVC 63.46 16.65 1.02 3.66 4.57 3.19 5.29 3.55 2.37 0.58 0.16 0.08 0.49 98.89 1.43 60.9 66 428 712 20 141 4 ad2 "Andesites of Dittmar Volcanic Center, Stage 2, undivided" MH 40° 27.20' 121° 20.38' 40.4533 -121.3397 LC82-138 DVC 58.48 18.75 1.32 4.75 5.93 4.36 6.79 2.94 1.73 0.64 0.14 0.10 1.25 98.67 1.36 62.1 40 630 451 17 115 4 ad2 "Andesites of Dittmar Volcanic Center, Stage 2, undivided" MH 40° 27.22' 121° 21.28' 40.4537 -121.3546 LC82-161 RSE 48.61 17.71 1.52 7.78 9.15 9.20 11.17 2.66 0.17 0.91 0.09 0.17 0.04 100.22 0.99 67.8 2 240 100 24 76 5 143 98 44 218 bwv Tholeiitic basalt of Warner Valley ST 40° 21.07' 121° 18.03' 40.3512 -121.3005 LC82-164 DVC 55.74 16.92 1.54 5.56 6.95 6.79 8.35 3.04 1.15 0.66 0.13 0.12 0.89 98.74 1.02 68.5 27 394 401 18 98 1 Tad "Andesites of Dittmar Volcanic Center, Stage 1, undivided" MH 40° 26.92' 121° 21.33' 40.4487 -121.3555 LC82-169 LVC-BV 59.14 17.69 1.31 4.72 5.91 3.94 7.13 3.45 1.57 0.75 0.19 0.10 0.50 99.43 1.50 59.8 35 500 486 18 147 4 abf Andesite of Bluff Falls quarry LP 40° 24.48' 121° 32.95' 40.4079 -121.5485 LC82-171 RSE 53.96 17.08 1.70 6.13 7.66 7.05 7.93 3.35 1.29 1.04 0.32 0.13 0.21 99.63 1.09 67.2 32 513 455 22 148 8 128 59 54 200 mhl Basaltic andesite of Huckleberry Lake LP 40° 24.40' 121° 33.23' 40.4067 -121.5539 LC82-172 LVC-BV 61.43 17.36 1.05 3.79 4.73 3.49 6.33 3.94 1.69 0.65 0.19 0.08 0.62 98.91 1.36 62.2 37 636 491 19 157 6 ag Andesite of Glassburner Meadows LP 40° 24.43' 121° 33.86' 40.4072 -121.5643 LC82-174 LVC-BV 59.88 17.08 1.25 4.51 5.64 4.58 7.10 3.63 0.93 0.71 0.23 0.10 1.84 97.68 1.23 64.4 50 519 562 20 148 3 amc Andesites of Mill Canyon LP 40° 26.55' 121° 32.08' 40.4425 -121.5347 LC82-177 LVC-BV 58.74 18.02 1.27 4.57 5.71 3.59 7.15 3.77 1.71 0.84 0.24 0.09 0.91 98.73 1.59 58.4 41 502 603 22 157 8 amc Andesites of Mill Canyon LP 40° 26.52' 121° 30.58' 40.4420 -121.5097 LC82-182 LVC-BV 61.50 16.85 1.13 4.08 5.10 3.58 5.92 3.82 2.08 0.75 0.20 0.08 1.05 98.34 1.43 61.0 51 471 632 24 186 4 amd Andesite of Mount Diller LP 40° 27.85' 121° 33.07' 40.4642 -121.5511 LC82-191 LVC-BV 61.71 16.88 1.13 4.08 5.11 3.50 6.12 3.72 1.87 0.71 0.18 0.09 1.21 98.80 1.46 60.4 43 529 518 21 171 5 ag Andesite of Glassburner Meadows LP 40° 26.35' 121° 33.54' 40.4391 -121.5589 LC82-192 LVC-BV 59.47 17.77 1.17 4.22 5.27 4.24 7.35 3.55 1.25 0.70 0.19 0.09 0.36 99.51 1.24 64.2 28 717 361 17 134 5 amc Andesites of Mill Canyon collected from large block in landslide LP 40° 25.92' 121° 32.62' 40.4320 -121.5437 LC82-193 LVC-B 64.06 17.03 0.90 3.23 4.04 2.86 5.39 3.82 1.95 0.54 0.15 0.07 0.21 99.01 1.41 61.2 42 522 575 18 141 3 db Dacite of Bumpass Mountain RP 40° 27.59' 121° 27.48' 40.4598 -121.4581 LC82-194 LVC-BV 62.97 16.80 1.06 3.82 4.77 2.80 5.42 3.86 2.25 0.73 0.21 0.08 0.66 99.20 1.70 56.7 62 416 715 21 171 7 ar Andesite of Rice Creek RP 40° 23.73' 121° 28.32' 40.3955 -121.4721 LC82-204 LVC-B 68.88 15.90 0.61 2.21 2.76 1.51 3.42 4.22 2.69 0.38 0.11 0.05 0.40 98.97 1.83 54.9 70 339 752 16 145 5 dr Dacite of Reading Peak RP 40° 27.96' 121° 27.82' 40.4660 -121.4637 LC83-227 LVC-TY 62.23 16.73 1.07 3.86 4.83 3.28 6.28 3.88 1.82 0.59 0.16 0.09 1.04 98.45 1.47 60.2 41 420 531 17 115 5 ah Andesite of Hat Mountain WP 40° 30.03' 121° 25.25' 40.5005 -121.4208 LC83-233 LVC-TY 61.14 16.70 1.17 4.21 5.27 3.71 6.92 3.67 1.56 0.66 0.15 0.10 0.13 99.32 1.42 61.1 36 417 17 115 ah Andesite of Hat Mountain WP 40° 30.96' 121° 27.17' 40.5160 -121.4528 LC83-248 LVC-TO 58.36 16.88 1.25 4.51 5.64 5.59 7.94 3.41 1.29 0.54 0.12 0.10 0.74 98.84 1.01 68.8 29 614 362 12 107 0 arp Andesite of Raker Peak WP 40° 34.14' 121° 28.13' 40.5690 -121.4689 LC83-255 RNW 54.47 17.07 1.40 5.05 6.31 7.73 8.98 3.47 0.63 0.85 0.23 0.10 0.74 98.95 0.82 73.2 12.9 1220 293 15 139 3 136 62 54 69 mrm Basaltic andesite of Red Mountain MZ 40° 35.23' 121° 32.19' 40.5872 -121.5364 LC83-263 RNW-T 56.99 17.89 1.37 4.94 6.18 4.65 7.91 3.74 1.37 0.78 0.24 0.11 0.57 100.04 1.33 62.7 32 531 570 19 141 5 atb Andesite of Bear Wallow Butte MZ 40° 36.94' 121° 30.26' 40.6157 -121.5043 LC83-266 LVC-TO 57.44 17.32 1.32 4.74 5.93 5.11 7.81 3.53 1.60 0.69 0.33 0.10 0.33 99.23 1.16 65.7 34 656 517 19 151 5 arp Andesite of Raker Peak "outcrop under May 22, 1915 debris-flow deposit, unit pw2" MZ 40° 33.81' 121° 30.34' 40.5635 -121.5057 LC83-272 RNW-T 57.68 17.94 1.33 4.80 6.00 4.42 7.56 3.66 1.51 0.76 0.23 0.10 0.75 99.18 1.36 62.1 34 523 597 22 142 5 att Andesite of Tumble Buttes MZ 40° 36.74' 121° 31.55' 40.6124 -121.5259 LC83-274 RNW 59.72 18.12 1.17 4.21 5.27 3.56 7.13 3.41 1.73 0.56 0.30 0.09 0.40 99.26 1.48 60.1 39 564 562 20 129 3 abm Andesites of Badger Mountain WP 40° 35.57' 121° 26.44' 40.5928 -121.4407 LC83-276 RNW 54.22 17.74 1.43 5.15 6.43 6.87 10.38 2.86 0.61 0.51 0.11 0.11 <0.01 99.79 0.94 70.4 9.7 671 176 13 77 1 52 44 41 123 mbg Basaltic andesite of Little Bunchgrass Meadow WP 40° 34.47' 121° 24.13' 40.5745 -121.4023 LC83-288 RNW 62.62 16.72 1.09 3.91 4.89 3.32 5.93 3.66 1.92 0.56 0.18 0.09 0.10 99.11 1.47 60.2 49 418 754 20 161 3 abm Andesites of Badger Mountain WP 40° 34.43' 121° 27.41' 40.5738 -121.4568 LC83-290 RNW 48.04 18.23 1.50 7.65 9.00 9.35 10.98 2.82 0.17 0.98 0.13 0.16 0.08 100.14 0.96 68.5 2.0 302 102 23 85 1 164 69 36 183 bn Tholeiitic basalt of Nobles Emigrant Trail WP 40° 33.92' 121° 27.32' 40.5654 -121.4553 LC83-300 RNW 62.52 16.62 1.08 3.89 4.86 3.39 6.03 3.59 2.05 0.56 0.18 0.09 0.86 98.48 1.44 60.8 49 403 723 21 156 3 abm Andesites of Badger Mountain WP 40° 34.12' 121° 27.81' 40.5687 -121.4635 LC83-312 LVC-BV 62.35 17.25 1.05 3.78 4.73 2.93 5.34 4.06 2.23 0.70 0.21 0.08 0.34 98.40 1.61 58.0 63 432 730 20 169 6 ar Andesite of Rice Creek RP 40° 27.61' 121° 26.37' 40.4602 -121.4396 LC83-313 CVF-B 59.02 17.74 1.25 4.50 5.62 4.04 6.65 3.94 1.69 0.81 0.28 0.10 0.70 98.59 1.39 61.5 40 537 630 20 143 5 adb Andesite of Bidwell Spring SW 40° 37.67' 121° 16.63' 40.6279 -121.2772 LC83-317 LVC-TY 55.97 15.79 1.40 5.03 6.28 8.18 8.26 3.20 1.30 0.63 0.14 0.12 <0.01 99.36 0.77 74.4 27 326 341 17 96 3 mp1 "Flow 1, Painted Dunes [Basaltic andesites of Cinder Cone]" PP 40° 32.59' 121° 19.00' 40.5431 -121.3166 LC83-321 RNW 58.27 17.96 1.29 4.66 5.82 4.27 7.26 3.74 1.48 0.71 0.26 0.10 0.76 98.49 1.37 62.0 30 542 582 20 151 2 ap Andesite and basaltic andesite of Prospect Peak WP 40° 34.28' 121° 22.52' 40.5713 -121.3754 LC83-324 RNW 60.90 17.27 1.17 4.21 5.26 3.32 6.46 3.60 2.16 0.63 0.18 0.10 0.92 98.33 1.58 58.4 49 432 797 20 160 4 awp Andesites of West Prospect Peak WP 40° 34.61' 121° 22.76' 40.5768 -121.3793 LC83-329 RNW-S 57.89 17.84 1.41 5.09 6.36 3.80 7.14 3.88 1.62 0.89 0.33 0.11 0.60 98.67 1.67 57.1 32 538 666 24 174 5 asp Andesite of Potato Butte OS 40° 38.95' 121° 23.90' 40.6492 -121.3983 LC83-347 RNW 51.33 17.92 1.73 6.22 7.77 6.84 8.28 3.89 1.48 1.69 0.50 0.13 <0.01 99.46 1.14 66.2 24.5 604 429 24 189 26 107 46 41 169 bbf Basalt of Badger Flat WP 40° 32.93' 121° 23.71' 40.5489 -121.3951 LC83-355 LVC-B 66.45 16.46 0.78 2.82 3.52 2.21 4.55 3.81 2.18 0.48 0.18 0.07 0.34 98.73 1.59 58.4 44 516 723 17 151 6 ds Dacite of Ski Heil Peak LP 40° 28.17' 121° 30.98' 40.4695 -121.5164 LC83-356 RNW-S 60.62 17.42 1.22 4.39 5.49 3.41 6.46 3.56 1.84 0.71 0.25 0.10 0.86 98.63 1.61 58.1 46 467 717 23 172 7 ass Andesite of Sugarloaf Peak OS 40° 41.40' 121° 25.44' 40.6900 -121.4240 LC83-357 RNW-S 59.34 17.54 1.32 4.75 5.94 3.78 6.72 3.62 1.75 0.79 0.30 0.10 0.72 98.60 1.57 58.7 39 494 707 24 180 6 ass Andesite of Sugarloaf Peak OS 40° 41.31' 121° 25.36' 40.6884 -121.4227 LC83-358 LVC-B 66.49 16.60 0.77 2.77 3.46 2.04 4.26 3.97 2.39 0.49 0.16 0.07 0.21 99.12 1.69 56.8 52 484 762 18 160 6 ds Dacite of Ski Heil Peak LP 40° 28.23' 121° 30.69' 40.4705 -121.5114 LC83-359 LVC-E 55.96 19.40 1.30 4.69 5.87 4.19 8.46 3.47 1.32 0.86 0.24 0.09 0.29 98.98 1.40 61.4 37 1114 287 18 135 5 re Dome and flow [Rhyodacite of Eagle Peak] mafic inclusion LP 40° 28.47' 121° 31.06' 40.4745 -121.5176 LC83-360 LVC-E 70.98 15.46 0.49 1.76 2.20 1.01 2.70 4.23 2.87 0.34 0.12 0.05 0.54 98.53 2.18 50.5 76 327 813 15 139 8 re Dome and flow [Rhyodacite of Eagle Peak] LP 40° 28.47' 121° 31.06' 40.4745 -121.5176 LC83-362 LVC-E 55.69 19.38 1.32 4.74 5.92 4.39 8.82 3.40 1.18 0.81 0.19 0.09 0.83 98.56 1.35 62.3 34 1200 236 15 129 1 re Dome and flow [Rhyodacite of Eagle Peak] mafic inclusion LP 40° 28.55' 121° 31.16' 40.4758 -121.5193 LC83-363 LVC-B 65.64 16.99 0.80 2.86 3.58 2.15 4.75 3.95 2.12 0.50 0.15 0.07 0.13 99.18 1.66 57.3 51 573 603 15 148 4 dv Dacite of Vulcans Castle LP 40° 28.60' 121° 31.51' 40.4767 -121.5251 LC83-366 LVC-TO 56.61 16.81 1.50 5.39 6.74 6.01 7.18 3.56 1.50 1.00 0.31 0.12 <0.01 99.33 1.12 66.5 32 514 544 19 140 10 acl Andesite and basaltic andesite of Cluster Lakes WP 40° 32.56' 121° 23.63' 40.5427 -121.3938 LC83-369 RNW 56.96 18.28 1.37 4.92 6.15 4.80 7.71 3.53 1.29 0.76 0.27 0.11 0.14 99.56 1.28 63.5 25 602 492 19 143 5 ap Andesite and basaltic andesite of Prospect Peak WP 40° 34.32' 121° 23.67' 40.5719 -121.3942 LC83-371 LVC-TO 57.90 17.92 1.48 5.34 6.68 3.26 6.79 4.12 1.60 1.12 0.34 0.12 <0.01 99.90 2.05 52.1 38 500 568 24 173 8 acl Andesite and basaltic andesite of Cluster Lakes WP 40° 34.29' 121° 23.85' 40.5715 -121.3975 LC83-372 RNW 57.21 17.79 1.40 5.04 6.30 4.52 7.70 3.70 1.28 0.85 0.38 0.11 0.09 99.48 1.40 61.5 34 726 618 19 169 8 abm Andesites of Badger Mountain WP 40° 34.20' 121° 24.04' 40.5700 -121.4007 LC83-373 RNW 56.93 18.17 1.40 5.02 6.28 4.34 7.64 3.63 1.37 0.95 0.43 0.11 0.14 100.15 1.45 60.6 32 798 665 18 164 9 abm Andesites of Badger Mountain WP 40° 34.70' 121° 24.22' 40.5783 -121.4037 LC83-375 RNW 52.19 18.20 1.10 3.96 4.95 7.74 8.43 4.42 1.61 1.69 0.54 0.12 <0.02 99.89 0.64 77.7 bbf Basalt of Badger Flat WP 40° 34.88' 121° 24.25' 40.5813 -121.4042 LC83-380 RNW 57.27 17.85 1.38 4.96 6.20 4.42 7.63 3.67 1.40 0.91 0.40 0.11 0.18 99.72 1.40 61.4 34 754 660 21 167 9 abm Andesites of Badger Mountain WP 40° 34.53' 121° 24.08' 40.5755 -121.4013 LC83-382 RNW 61.23 17.39 1.15 4.13 5.16 3.21 6.40 3.36 2.22 0.63 0.18 0.10 0.86 98.77 1.61 58.1 56 434 766 21 156 4 awp Andesites of West Prospect Peak WP 40° 35.20' 121° 23.87' 40.5866 -121.3979 LC83-386 RNW 49.07 17.96 1.47 7.48 8.80 8.79 11.04 2.72 0.24 0.95 0.12 0.16 <0.01 100.48 1.00 67.7 4.7 271 134 24 85 1 143 100 45 220 btb Tholeiitic basalt of Twin Bridges WP 40° 36.82' 121° 27.89' 40.6136 -121.4649 LC83-390 RNW 62.69 16.69 1.08 3.88 4.85 3.40 5.97 3.32 2.13 0.56 0.19 0.09 0.97 98.69 1.43 60.9 51 410 714 21 155 5 abm Andesites of Badger Mountain WP 40° 34.30' 121° 26.84' 40.5716 -121.4473 LC83-392 LVC-E 68.12 15.87 0.70 2.53 3.17 1.71 3.78 4.23 2.48 0.40 0.11 0.06 0.27 99.22 1.85 54.6 64 376 721 17 127 7 pfl Lithic pyroclastic-flow deposit from partial collapse of dome [Dacite of Lassen Peak] WP 40° 30.45' 121° 28.63' 40.5075 -121.4772 LC83-393 LVC-E 55.20 19.04 1.56 5.62 7.03 4.56 9.17 3.09 0.79 0.73 0.12 0.12 0.11 99.38 1.54 59.1 7 637 204 14 76 1 20 48 47 36 pfl Lithic pyroclastic-flow deposit from partial collapse of dome [Dacite of Lassen Peak] mafic inclusion WP 40° 30.45' 121° 28.63' 40.5075 -121.4772 LC83-399 LVC-TY 54.86 15.83 1.49 5.37 6.71 8.63 8.73 3.03 1.12 0.68 0.14 0.12 0.08 99.75 0.78 74.1 28.2 345 298 16 91 5 mp1 "Flow 1, Painted Dunes [Basaltic andesites of Cinder Cone]" PP 40° 32.63' 121° 19.48' 40.5438 -121.3247 LC84-411 LVC-BV 59.21 17.36 1.25 4.50 5.62 4.30 7.05 3.47 1.79 0.72 0.25 0.10 1.29 98.44 1.31 63.0 46 534 581 19 149 5 amc Andesites of Mill Canyon LP 40° 25.63' 121° 31.72' 40.4272 -121.5287 LC84-417 LVC-E 69.58 15.37 0.61 2.21 2.76 1.39 3.34 4.22 2.71 0.40 0.12 0.05 1.22 97.83 1.98 53.0 75 329 800 16 138 8 13 5 31 10 pc Pumiceous pyroclastic-flow and fall deposits [Rhyodacite of Chaos Crags] lowest pf in Manzanita Creek MZ 40° 31.90' 121° 33.17' 40.5317 -121.5528 LC84-418 LVC-E 69.30 15.47 0.62 2.25 2.81 1.43 3.44 4.23 2.66 0.41 0.12 0.06 0.92 98.51 1.96 53.2 69 343 779 14 140 6 pc Pumiceous pyroclastic-flow and fall deposits [Rhyodacite of Chaos Crags] middle pf in Manzanita Creek MZ 40° 31.90' 121° 33.17' 40.5317 -121.5528 LC84-419 LVC-E 69.42 15.39 0.62 2.25 2.81 1.41 3.43 4.24 2.67 0.40 0.12 0.05 0.86 98.34 2.00 52.7 69 339 779 15 132 7 pc Pumiceous pyroclastic-flow and fall deposits [Rhyodacite of Chaos Crags] uppermost pf in Manzanita Creek MZ 40° 31.90' 121° 33.17' 40.5317 -121.5528 LC84-420 LVC-E 69.95 15.42 0.57 2.05 2.56 1.23 3.30 4.29 2.64 0.36 0.12 0.07 1.09 98.15 2.09 51.6 71 327 795 13 138 6 pc Pumiceous pyroclastic-flow and fall deposits [Rhyodacite of Chaos Crags] lower pf in Lost Creek WP 40° 31.68' 121° 29.09' 40.5280 -121.4848 LC84-421 LVC-E 69.59 15.61 0.58 2.09 2.62 1.28 3.39 4.30 2.63 0.36 0.12 0.05 1.17 98.23 2.05 52.1 75 338 780 15 137 11 pc Pumiceous pyroclastic-flow and fall deposits [Rhyodacite of Chaos Crags] middle pf in Lost Creek WP 40° 31.68' 121° 29.09' 40.5280 -121.4848 LC84-422 LVC-E 69.82 15.54 0.57 2.05 2.56 1.26 3.31 4.29 2.64 0.36 0.12 0.05 1.05 98.05 2.03 52.3 70 342 773 15 131 8 pc Pumiceous pyroclastic-flow and fall deposits [Rhyodacite of Chaos Crags] uppermost pf in Lost Creek WP 40° 31.68' 121° 29.09' 40.5280 -121.4848 LC84-423 LVC-E 66.33 16.28 0.78 2.80 3.49 2.20 4.75 4.09 2.17 0.42 0.11 0.07 0.32 99.21 1.59 58.4 56 403 634 17 124 8 dl Dome [Dacite of Lassen Peak] LP 40° 28.98' 121° 30.25' 40.4831 -121.5041 LC84-424 LVC-E 55.76 18.79 1.52 5.47 6.84 4.38 8.88 3.26 1.00 0.70 0.12 0.12 0.60 99.05 1.56 58.8 22 661 205 16 83 1 dl Dome [Dacite of Lassen Peak] mafic inclusion LP 40° 28.98' 121° 30.25' 40.4831 -121.5041 LC84-427 LVC-E 69.84 15.43 0.58 2.08 2.59 1.24 3.35 4.34 2.63 0.36 0.12 0.05 0.51 98.74 2.10 51.5 68 338 780 16 125 8 pc Pumiceous pyroclastic-flow and fall deposits [Rhyodacite of Chaos Crags] lithic block of Chaos Crags Dome A MZ 40° 30.75' 121° 30.77' 40.5125 -121.5128 LC84-428 LVC-E 69.62 15.53 0.59 2.12 2.65 1.29 3.38 4.33 2.62 0.35 0.13 0.06 0.51 98.77 2.06 52.0 73 335 793 15 132 8 rca Dome A [Rhyodacite of Chaos Crags] clast of dome A in unit pc MZ 40° 30.75' 121° 30.88' 40.5125 -121.5147 LC84-433 LVC-E 66.97 16.26 0.76 2.72 3.40 1.81 4.48 4.15 2.25 0.41 0.12 0.07 0.49 99.31 1.88 54.2 59 376 697 15 128 6 12 12 31 9 rce Dome E [Rhyodacite of Chaos Crags] MZ 40° 31.66' 121° 31.20' 40.5277 -121.5200 LC84-434 LVC-E 68.88 15.76 0.62 2.22 2.77 1.46 3.71 4.30 2.50 0.38 0.11 0.06 0.10 99.84 1.91 53.9 70 348 739 15 136 6 rcc Dome C [Rhyodacite of Chaos Crags] MZ 40° 30.71' 121° 31.28' 40.5286 -121.5213 LC84-435 LVC-E 67.78 15.81 0.74 2.67 3.34 1.77 4.08 4.01 2.52 0.42 0.12 0.07 0.18 99.58 1.88 54.2 63 370 721 14 121 8 rcd Dome D [Rhyodacite of Chaos Crags] MZ 40° 31.60' 121° 31.41' 40.5267 -121.5235 LC84-443 LVC-E 69.81 15.60 0.56 2.03 2.54 1.20 3.31 4.30 2.64 0.35 0.12 0.06 0.76 98.91 2.12 51.2 71 331 804 13 137 8 10 0 24 6 rcb Dome B [Rhyodacite of Chaos Crags] MZ 40° 30.81' 121° 30.92' 40.5135 -121.5153 LC84-446 LVC-R 73.47 13.99 0.44 1.60 2.00 0.88 2.03 3.65 3.43 0.35 0.10 0.05 2.76 96.67 2.27 49.6 77 218 844 14 132 6 pr Rockland tephra MT 40° 26.76' 121° 47.48' 40.4460 -121.7913 LC84-454 LVC-E 69.98 15.47 0.54 1.95 2.43 1.35 3.12 4.24 2.83 0.36 0.11 0.05 1.53 97.82 1.80 55.3 77 335 744 14 134 8 rsf Domes [Rhyodacite of Sunflower Flat] MZ 40° 32.18' 121° 30.08' 40.5363 -121.5013 LC84-455 LVC-E 68.17 16.10 0.66 2.38 2.98 1.50 4.16 4.23 2.25 0.36 0.11 0.06 0.40 98.99 1.99 52.8 64 366 710 14 127 7 rcf Dome F [Rhyodacite of Chaos Crags] collected from talus MZ 40° 32.02' 121° 30.41' 40.5337 -121.5068 LC84-472 LVC-B 54.86 19.69 1.55 5.58 6.98 3.95 8.47 3.65 1.15 0.83 0.15 0.11 1.31 98.12 1.77 55.8 27 690 279 18 103 1 rlm Rhyodacite of Loomis Peak mafic inclusion LP 40° 29.39' 121° 32.87' 40.4898 -121.5478 LC84-473 LVC-B 58.53 18.55 1.28 4.61 5.77 3.75 7.72 3.48 1.19 0.64 0.14 0.10 1.39 98.05 1.54 59.2 21 620 339 15 119 2 rlm Rhyodacite of Loomis Peak mafic inclusion LP 40° 29.39' 121° 32.87' 40.4898 -121.5478 LC84-487 RNW 53.94 17.08 1.47 5.29 6.61 8.23 9.38 3.06 0.49 0.79 0.17 0.11 0.64 100.15 0.80 73.5 9.7 1090 253 17 113 3 158 66 54 228 mrd Basalt andesite and andesite of Red Lake Mountain MZ 40° 35.40' 121° 35.52' 40.5900 -121.5920 LC84-488 RNW 56.72 16.96 1.48 5.31 6.64 5.48 7.61 3.41 1.63 0.93 0.35 0.12 0.30 99.66 1.21 64.8 am "Older regional andesites and basaltic andesites, undivided" MZ 40° 35.16' 121° 36.42' 40.5860 -121.6070 LC84-493 RNW 60.79 16.85 1.21 4.35 5.43 3.81 6.47 3.48 2.07 0.65 0.22 0.10 0.58 99.01 1.43 60.9 47 435 748 20 168 4 aa Andesite of Ashpan Butte MZ 40° 36.56' 121° 32.60' 40.6093 -121.5433 LC84-497 RNW 58.30 17.74 1.34 4.84 6.05 3.62 6.97 3.70 2.10 0.93 0.33 0.11 0.55 99.15 1.67 57.1 46 496 698 25 183 8 am "Older regional andesites and basaltic andesites, undivided" MZ 40° 36.11' 121° 34.56' 40.6018 -121.5760 LC84-500 RNW-T 58.18 17.97 1.32 4.75 5.94 4.05 7.47 3.61 1.57 0.73 0.22 0.10 0.79 99.00 1.47 60.3 34 526 609 19 143 5 atd Andesite of Devils Rock Garden TH 40° 38.25' 121° 34.57' 40.6375 -121.5762 LC84-501 RNW 56.27 17.71 1.49 5.36 6.70 5.18 8.33 3.24 1.41 0.70 0.20 0.11 0.50 99.39 1.29 63.3 24 522 470 19 130 4 mm Basaltic andesites of Magee Volcano TH 40° 39.17' 121° 35.59' 40.6528 -121.5931 LC84-514 RNW 48.58 17.44 1.54 7.86 9.25 9.90 10.18 2.97 0.24 0.97 0.16 0.16 <0.01 100.09 0.93 69.2 2.3 295 166 24 91 2 155 92 57 286 bk2 Unit 2 [Tholeiitic basalts of Big Lake] MZ 40° 36.59' 121° 37.42' 40.6098 -121.6237 LC84-521 LVC-BV 60.99 17.56 1.18 4.23 5.29 3.41 6.19 3.78 1.66 0.71 0.21 0.08 0.94 99.01 1.55 59.0 40 499 613 23 157 6 amd Andesite of Mount Diller LP 40° 28.21' 121° 31.61' 40.4702 -121.5268 LC84-530 LVC-B 63.67 17.34 0.91 3.26 4.08 2.57 5.63 4.03 1.81 0.54 0.17 0.07 0.09 98.99 1.59 58.4 41 704 601 18 146 5 dpl Dacite of Lassen Peak parking lot LP 40° 28.52' 121° 30.62' 40.4753 -121.5103 LC84-540 LVC-B 60.30 17.36 1.15 4.12 5.15 4.55 6.47 3.72 1.47 0.59 0.17 0.10 0.79 98.95 1.13 66.3 32 565 480 17 137 5 dh Dacite of Mt. Helen mafic inclusion RP 40° 28.29' 121° 29.81' 40.4715 -121.4969 LC84-541 LVC-B 64.21 16.94 0.92 3.32 4.15 2.35 5.15 4.17 2.11 0.56 0.18 0.09 0.34 99.57 1.77 55.8 50 453 672 17 157 4 duh Dacite under Mt. Helen RP 40° 28.36' 121° 29.97' 40.4727 -121.4994 LC84-542A LVC-TY 68.26 15.89 0.67 2.41 3.01 1.67 3.68 4.15 2.62 0.45 0.14 0.06 1.84 98.41 1.80 55.3 67 457 763 19 157 9 ae Andesite of Eagle Peak LP 40° 28.42' 121° 31.07' 40.4737 -121.5178 LC84-542C LVC-TY 61.04 18.38 1.03 3.72 4.64 3.43 6.70 3.83 1.08 0.54 0.15 0.09 1.06 98.86 1.35 62.2 27 955 352 14 122 4 ae Andesite of Eagle Peak LP 40° 28.42' 121° 31.07' 40.4737 -121.5178 LC84-544 LVC-B 64.16 17.56 0.85 3.05 3.81 2.60 5.12 4.16 1.81 0.50 0.14 0.07 0.32 98.85 1.47 60.3 43 707 561 18 139 4 ds Dacite of Ski Heil Peak LP 40° 28.29' 121° 31.59' 40.4715 -121.5264 LC84-547 LVC-B 69.09 15.47 0.63 2.27 2.84 1.41 3.22 4.31 2.93 0.45 0.15 0.06 1.26 98.52 2.01 52.6 dh Dacite of Mt. Helen LP 40° 28.45' 121° 30.10' 40.4742 -121.5017 LC84-563 RNW 48.56 17.86 1.52 7.75 9.12 9.17 11.04 2.77 0.14 0.93 0.10 0.16 0.12 100.53 0.99 67.8 4.2 230 96 23 72 1 135 92 40 204 bec Tholeiitic basalt of Eagle Canyon VI 40° 32.33' 121° 42.49' 40.5388 -121.7082 LC84-569 RNW 49.58 17.57 1.45 7.39 8.69 8.71 10.74 2.89 0.36 0.99 0.17 0.15 0.03 100.45 1.00 67.8 9.7 420 161 24 100 4 144 87 39 255 b44 Tholeiitic basalt of Calif. Hwy 44 SW 40° 38.03' 121° 20.06' 40.6338 -121.3343 LC84-571 RNW 56.10 17.92 1.44 5.20 6.50 5.08 7.73 3.75 1.41 0.87 0.37 0.12 0.44 99.33 1.28 63.5 27 583 564 20 157 10 ap Andesite and basaltic andesite of Prospect Peak PP 40° 37.11' 121° 19.03' 40.6185 -121.3172 LC84-572 RNW 56.99 17.88 1.38 4.96 6.20 4.82 7.55 3.79 1.43 0.78 0.31 0.11 0.40 99.52 1.29 63.4 31 573 533 20 162 8 ap Andesite and basaltic andesite of Prospect Peak PP 40° 35.54' 121° 18.93' 40.5923 -121.3155 LC84-574 CVF-B 53.22 17.34 1.68 6.04 7.55 6.66 8.11 3.64 1.50 1.27 0.41 0.13 0.09 99.88 1.13 66.3 32 628 552 24 167 12 117 45 56 163 bdt Basalt of Twin Buttes PP 40° 34.56' 121° 15.98' 40.5760 -121.2663 LC84-575 CVF-B 55.82 17.56 1.46 5.26 6.58 5.56 7.52 3.76 1.52 1.04 0.37 0.11 0.36 99.65 1.18 65.3 34 562 567 21 154 10 mdb1 Unit 1 [Basaltic andesites of Black Butte] PP 40° 33.89' 121° 16.04' 40.5648 -121.2673 LC84-587 LVC-BV 61.16 17.04 1.13 4.07 5.09 3.69 5.91 3.89 2.05 0.73 0.23 0.09 0.32 99.04 1.38 61.8 52 473 675 20 196 7 amd Andesite of Mount Diller LP 40° 28.80' 121° 31.88' 40.4800 -121.5313 LC84-591 CVF-B 53.68 19.48 1.58 5.67 7.09 5.01 8.72 3.66 0.94 0.94 0.21 0.12 0.14 99.72 1.42 61.1 19 660 350 19 117 4 25 49 62 22 mdp Basaltic andesite of Pole Spring Road PP 40° 36.79' 121° 15.27' 40.6131 -121.2543 LC84-593 CVF-B 53.57 20.24 1.45 5.21 6.51 4.88 9.25 3.59 0.82 0.74 0.14 0.11 0.36 99.88 1.33 62.6 20 703 305 18 102 4 28 42 52 34 md36 Basaltic andesite of section 36 PP 40° 35.81' 121° 15.12' 40.5968 -121.2520 LC84-594 CVF-B 56.12 17.39 1.47 5.29 6.61 5.60 7.31 3.82 1.47 1.03 0.37 0.12 0.27 99.47 1.18 65.4 35 572 560 23 157 11 mdb1 Unit 1 [Basaltic andesites of Black Butte] BB 40° 33.26' 121° 13.24' 40.5544 -121.2206 LC84-596 CVF-C 52.19 17.67 1.79 6.43 8.04 6.77 8.87 3.49 1.14 1.12 0.40 0.13 0.35 99.18 1.19 65.2 21 607 522 21 138 8 106 81 59 147 bcb Basalt of Cowboy Lake BB 40° 31.25' 121° 10.68' 40.5208 -121.1780 LC84-597 CVF-P 52.21 18.62 1.70 6.13 7.67 5.25 9.40 3.78 1.14 1.15 0.48 0.13 <0.01 99.51 1.46 60.4 25 784 530 21 163 11 46 57 69 46 bpc3 Unit 3 [Basalts of Pine Creek] BB 40° 32.80' 121° 08.37' 40.5467 -121.1395 LC84-599 CVF-P 52.42 17.94 1.72 6.20 7.75 5.67 9.59 3.63 1.07 1.16 0.47 0.13 0.32 99.88 1.37 62.0 22 776 498 21 157 11 47 64 71 71 bpc1 Unit 1 [Basalts of Pine Creek] BB 40° 32.02' 121° 07.95' 40.5337 -121.1325 LC84-600 LVC-BV 67.99 15.96 0.69 2.49 3.11 1.01 3.24 4.50 3.00 0.80 0.27 0.05 0.71 99.26 3.08 42.0 81 341 886 31 221 9 dt Dacite of Twin Meadows RP 40° 27.24' 121° 29.08' 40.4541 -121.4847 LC84-601 LVC-BV 62.98 16.58 1.08 3.90 4.87 3.04 5.22 3.87 2.29 0.75 0.21 0.07 0.86 98.71 1.60 58.2 61 429 685 23 196 10 amd Andesite of Mount Diller RP 40° 27.30' 121° 29.51' 40.4550 -121.4918 LC84-602 LVC-BV 59.79 17.42 1.21 4.36 5.45 3.59 6.73 3.53 2.17 0.81 0.28 0.10 1.66 98.65 1.52 59.4 57 595 658 24 179 5 amc Andesites of Mill Canyon RP 40° 27.05' 121° 29.91' 40.4508 -121.4985 LC84-605 LVC-BV 59.38 16.85 1.28 4.63 5.78 3.86 6.93 3.86 1.90 0.89 0.33 0.09 0.18 99.03 1.50 59.8 46 619 691 23 176 9 amc Andesites of Mill Canyon LP 40° 26.14' 121° 30.41' 40.4357 -121.5068 LC84-613 LVC-BV 59.59 17.20 1.25 4.49 5.61 3.78 6.76 3.80 1.94 0.82 0.27 0.10 0.76 99.34 1.48 60.0 46 579 637 21 173 6 amc Andesites of Mill Canyon LP 40° 26.90' 121° 30.42' 40.4483 -121.5070 LC84-616 LVC-BV 60.45 17.04 1.17 4.20 5.25 3.63 6.66 3.59 2.13 0.77 0.25 0.10 1.05 99.05 1.45 60.6 51 559 643 21 174 6 amc Andesites of Mill Canyon LP 40° 27.14' 121° 30.25' 40.4523 -121.5042 LC84-632 LVC-E 53.26 19.35 1.66 5.98 7.48 4.96 10.27 2.77 0.81 0.71 0.09 0.14 0.08 100.93 1.51 59.6 13 584 176 19 74 4 rcd Dome D [Rhyodacite of Chaos Crags] mafic inclusion MZ 40° 31.55' 121° 31.31' 40.5258 -121.5218 LC84-634 LVC-E 61.39 17.77 1.16 4.17 5.22 1.91 4.50 4.93 2.66 0.91 0.47 0.12 0.19 99.49 2.73 44.9 57 466 868 25 229 22 rcc Dome C [Rhyodacite of Chaos Crags] mafic inclusion MZ 40° 31.63' 121° 31.32' 40.5272 -121.5220 LC84-635 LVC-E 57.91 18.17 1.43 5.13 6.41 3.91 8.04 3.27 1.26 0.63 0.11 0.13 0.44 100.20 1.64 57.6 29 511 349 18 104 5 rce Dome E [Rhyodacite of Chaos Crags] mafic inclusion MZ 40° 31.66' 121° 31.21' 40.5277 -121.5202 LC84-637 LVC-E 57.10 18.43 1.54 5.55 6.93 3.78 8.15 3.37 1.08 0.74 0.13 0.13 0.24 100.37 1.84 54.8 22 547 294 22 105 6 rce Dome E [Rhyodacite of Chaos Crags] mafic inclusion MZ 40° 31.63' 121° 31.22' 40.5272 -121.5203 LC84-646 LVC-B 67.03 15.67 0.82 2.96 3.69 2.11 4.24 3.98 2.49 0.50 0.14 0.07 0.23 99.24 1.75 56.0 66 434 752 17 149 7 dmz Dacite of upper Manzanita Creek MZ 40° 30.39' 121° 31.27' 40.5065 -121.5212 LC84-648 LVC-E 63.46 16.75 1.00 3.61 4.51 2.94 5.77 3.89 1.88 0.50 0.12 0.08 0.34 99.51 1.54 59.2 46 470 527 15 109 4 dl Dome [Dacite of Lassen Peak] collected from talus MZ 40° 30.08' 121° 30.79' 40.5013 -121.5132 LC85-655 CVF-CL 51.18 17.96 1.84 6.64 8.30 5.61 9.18 3.86 1.29 1.86 0.44 0.14 0.09 100.21 1.48 60.1 22.0 594 385 25 173 20 60 52 44 bl22 Basalt of hill 2232 BB 40° 34.81' 121° 13.01' 40.5802 -121.2168 LC85-659 CVF-P 53.15 19.02 1.69 6.07 7.58 4.53 8.94 3.91 1.08 1.08 0.41 0.13 0.02 99.83 1.67 57.1 26 765 546 21 152 7 bb12 Unit 12 [Basalts and basaltic andesites of Bogard Buttes] BB 40° 35.20' 121° 09.82' 40.5867 -121.1637 LC85-660 CVF-P 52.85 18.69 1.69 6.07 7.59 4.90 9.30 3.80 1.08 1.08 0.41 0.13 0.22 100.01 1.55 59.0 22 777 518 21 144 6 40 62 69 34 bb8 Unit 8 [Basalts and basaltic andesites of Bogard Buttes] BB 40° 34.80' 121° 09.70' 40.5800 -121.1617 LC85-662 CVF-P 52.82 18.78 1.68 6.06 7.57 4.83 9.36 3.86 0.98 1.08 0.41 0.13 0.21 100.07 1.57 58.7 24 776 536 24 150 8 bb9 Unit 9 [Basalts and basaltic andesites of Bogard Buttes] BB 40° 34.21' 121° 08.50' 40.5702 -121.1417 LC85-663 CVF-P 51.51 18.41 1.75 6.30 7.87 6.08 10.46 3.32 0.71 1.04 0.27 0.15 0.22 99.93 1.29 63.2 12 431 324 24 113 6 67 89 53 150 bs3 Unit 3 [Basalts of Stephens Campground] BB 40° 33.19' 121° 09.59' 40.5532 -121.1598 LC85-665 CVF-P 51.36 18.16 1.77 6.36 7.95 6.53 10.39 3.27 0.72 1.02 0.27 0.15 0.19 99.66 1.22 64.6 14 406 304 23 112 6 86 81 55 199 bs3 Unit 3 [Basalts of Stephens Campground] BB 40° 33.35' 121° 10.31' 40.5558 -121.1718 LC85-668 LVC-BV 56.92 16.81 1.53 5.49 6.86 4.88 7.61 3.62 1.58 1.10 0.33 0.12 0.67 99.16 1.41 61.3 35 525 563 23 168 6 ad "Andesites of Diller sequence, undivided" VI 40° 31.33' 121° 40.81' 40.5222 -121.6802 LC85-670 RNW-T 56.45 17.74 1.44 5.19 6.49 5.06 8.17 3.54 1.26 0.80 0.24 0.11 0.69 99.61 1.28 63.5 30 526 536 19 123 5 mtb Basaltic andesite of Bear Wallow Butte TH 40° 38.73' 121° 32.24' 40.6456 -121.5374 LC85-671 CVF-P 51.35 17.02 1.88 6.76 8.45 8.05 9.14 3.14 1.02 1.19 0.30 0.15 0.34 99.92 1.05 68.0 16.8 487 371 22 130 10 172 68 57 295 br5 Unit 5 [Basalt of Robbers Spring] PL 40° 38.75' 121° 09.83' 40.6458 -121.1638 LC85-677 RNW 51.17 16.82 1.90 6.85 8.56 7.53 8.78 3.58 1.26 1.58 0.37 0.15 <0.01 100.45 1.14 66.2 19.3 521 408 24 158 19 128 33 48 227 bct Basalt of Cherry Thicket VI 40° 33.16' 121° 40.05' 40.5527 -121.6675 LC85-694 LVC-BV 57.91 16.94 1.44 5.18 6.48 4.51 7.62 3.55 1.64 0.86 0.23 0.12 0.39 99.01 1.44 60.8 43 437 589 24 154 6 amc Andesites of Mill Canyon LP 40° 25.54' 121° 31.20' 40.4257 -121.5200 LC85-695 LVC-BV 60.09 16.72 1.25 4.49 5.62 3.93 6.78 3.68 1.90 0.79 0.26 0.10 0.92 99.00 1.43 60.9 47 526 625 21 167 6 amc Andesites of Mill Canyon LP 40° 25.08' 121° 31.04' 40.4180 -121.5173 LC85-698 LVC-BV 56.68 15.50 1.44 5.19 6.49 7.60 8.62 3.10 0.95 0.64 0.15 0.12 0.32 99.75 0.85 72.3 22 586 312 17 115 3 amc Andesites of Mill Canyon LP 40° 24.92' 121° 30.80' 40.4153 -121.5133 LC85-699 LVC-BV 56.84 17.49 1.47 5.29 6.62 4.89 7.20 3.89 1.55 0.96 0.32 0.12 1.35 98.75 1.35 62.2 37 529 570 21 157 8 amc Andesites of Mill Canyon LP 40° 24.98' 121° 30.83' 40.4163 -121.5138 LC85-702 LVC-BV 59.05 17.26 1.28 4.62 5.77 4.11 7.33 3.78 1.41 0.83 0.23 0.09 0.61 99.39 1.40 61.3 37 619 479 20 150 3 amc Andesites of Mill Canyon LP 40° 25.09' 121° 30.71' 40.4182 -121.5118 LC85-703 LVC-BV 60.36 16.86 1.24 4.46 5.57 3.53 6.58 3.84 1.95 0.82 0.28 0.09 0.38 99.38 1.58 58.6 52 517 688 19 174 7 amc Andesites of Mill Canyon LP 40° 25.17' 121° 30.69' 40.4195 -121.5115 LC85-704 LVC-BV 57.36 16.94 1.51 5.44 6.80 3.92 7.73 3.91 1.58 1.12 0.38 0.11 0.45 99.61 1.73 56.2 41 616 667 23 171 8 amc Andesites of Mill Canyon LP 40° 24.85' 121° 30.77' 40.4142 -121.5128 LC85-706 LVC-BV 57.47 16.89 1.46 5.27 6.58 5.08 7.25 3.68 1.62 0.88 0.28 0.11 1.12 98.71 1.30 63.2 43 432 588 25 158 10 amc Andesites of Mill Canyon LP 40° 25.70' 121° 31.20' 40.4283 -121.5200 LC85-715 LVC-E 53.61 18.91 1.70 6.13 7.67 5.08 10.16 2.71 0.77 0.69 0.08 0.14 0.15 100.10 1.51 59.6 12 585 172 15 68 3 23 45 48 42 pc Pumiceous pyroclastic-flow and fall deposits [Rhyodacite of Chaos Crags] mafic inclusion in lithic block of Dome A MZ 40° 30.72' 121° 30.61' 40.5120 -121.5102 LC85-717 LVC-E 53.54 18.91 1.69 6.10 7.62 5.15 10.31 2.74 0.65 0.70 0.07 0.14 0.16 100.61 1.48 60.1 12 582 179 14 70 2 23 47 44 36 rcb Dome B [Rhyodacite of Chaos Crags] mafic inclusion collected from talus MZ 40° 30.69' 121° 31.55' 40.5115 -121.5258 LC85-726 LVC-BV 60.98 17.48 1.07 3.85 4.81 3.39 6.38 3.97 1.93 0.67 0.21 0.08 0.37 99.97 1.42 61.1 48 563 596 22 171 7 ad "Andesites of Diller sequence, undivided" WP 40° 30.26' 121° 27.86' 40.5043 -121.4643 LC85-727 LVC-TY 66.24 15.93 0.84 3.03 3.78 2.37 4.47 4.09 2.36 0.47 0.13 0.07 0.64 99.51 1.60 58.2 62 394 647 16 125 5 p2 "Pumice-fall deposit, May 22 [Deposits of the 1914–1917 eruption of Lassen Peak]" "light dacite (Clynne, 1999)" WP 40° 30.03' 121° 29.73' 40.5005 -121.4955 LC85-734 RSE 48.47 17.70 1.60 8.15 9.59 8.81 11.46 2.47 0.15 0.92 0.09 0.18 0.88 100.35 1.09 65.8 3 200 101 24 80 5 84 44 50 280 bmc Tholeiitic basalts of Mill Creek Plateau CM 40° 17.66' 121° 25.14' 40.2943 -121.4190 LC85-735 RSE 48.61 17.47 1.60 8.17 9.61 8.76 11.08 2.91 0.16 0.97 0.09 0.17 0.20 101.09 1.10 65.7 2.8 215 93 25 77 2 152 115 55 212 bic Tholeiitic basalt of Ice Cave Mountain CM 40° 21.09' 121° 24.92' 40.3515 -121.4153 LC85-736 RSE 49.05 17.61 1.55 7.92 9.31 7.75 11.24 3.07 0.31 1.08 0.24 0.17 <0.01 101.39 1.20 63.6 5 381 145 21 97 4 107 74 57 142 bbz Tholeiitic basalts of Buzzard Springs CM 40° 21.77' 121° 24.95' 40.3628 -121.4158 LC85-740 LVC-BV 58.20 18.63 1.35 4.85 6.07 3.35 8.02 3.53 1.13 0.68 0.15 0.10 <0.01 100.37 1.81 55.1 26 782 375 18 118 2 amc Andesites of Mill Canyon WP 40° 31.46' 121° 28.85' 40.5244 -121.4809 LC85-741 RNW 54.53 16.64 1.44 5.20 6.50 7.55 9.51 3.15 0.76 0.86 0.24 0.11 0.34 100.33 0.86 72.1 14.4 1010 306 17 126 6 125 63 52 232 meh Basaltic andesite of Eskimo Hill MZ 40° 33.26' 121° 34.86' 40.5543 -121.5810 LC85-743 RNW 58.76 16.14 1.29 4.65 5.81 5.90 8.29 3.27 0.66 0.75 0.18 0.10 0.05 100.25 0.99 69.3 11.9 1020 255 15 111 1 93 52 49 148 mrd Basaltic andesite and andesite of Red Lake Mountain MZ 40° 34.23' 121° 35.91' 40.5705 -121.5985 LC85-748 LVC-TO 57.70 16.60 1.33 4.78 5.98 6.07 8.38 3.30 1.10 0.53 0.11 0.10 <0.01 100.53 0.98 69.4 26 662 297 15 97 2 arp Andesite of Raker Peak WP 40° 31.61' 121° 27.17' 40.5268 -121.4528 LC85-760 RNW 48.25 17.57 1.61 8.20 9.65 8.53 11.32 2.94 0.19 1.10 0.11 0.18 <0.01 101.64 1.13 64.9 4.0 285 104 27 84 3 138 124 44 164 bhc Hat Creek Basalt (tholeiitic) OS 40° 38.93' 121° 25.16' 40.6488 -121.4193 LC85-764 LVC-BV 59.36 17.29 1.29 4.63 5.78 3.95 6.74 3.87 1.79 0.78 0.21 0.10 0.10 100.57 1.47 60.3 46 522 617 23 162 7 ar Andesite of Rice Creek RP 40° 26.23' 121° 28.02' 40.4372 -121.4670 LC85-767A LVC-BV 54.64 19.11 1.60 5.77 7.21 5.10 7.98 3.36 1.24 0.89 0.18 0.13 0.25 101.12 1.42 61.2 24 603 439 21 142 8 amd Andesite of Mount Diller mafic inclusion in and of Mt Diller collected from till RP 40° 26.31' 121° 29.42' 40.4385 -121.4903 LC85-767D LVC-BV 55.70 18.50 1.58 5.68 7.10 4.93 7.63 3.51 1.24 0.91 0.19 0.12 1.18 99.56 1.44 60.7 31 546 534 23 149 6 amd Andesite of Mount Diller mafic inclusion in and of Mt Diller collected from till RP 40° 26.31' 121° 29.42' 40.4385 -121.4903 LC85-769 LVC-B 70.97 14.80 0.56 2.01 2.52 0.99 2.41 4.06 3.57 0.45 0.13 0.05 0.15 98.86 2.53 46.8 rmc Rhyodacite of Mount Conard RP 40° 25.90' 121° 29.52' 40.4316 -121.4921 LC85-771 LVC-BV 59.65 17.16 1.29 4.65 5.82 3.83 6.58 3.80 1.93 0.79 0.21 0.10 0.21 100.76 1.52 59.5 50 486 654 25 169 8 ar Andesite of Rice Creek RP 40° 26.44' 121° 29.07' 40.4407 -121.4845 LC85-774 LVC-BV 59.83 17.21 1.20 4.34 5.42 3.77 6.90 3.77 1.90 0.76 0.22 0.09 0.95 99.26 1.44 60.7 45 518 634 22 165 7 amc Andesites of Mill Canyon RP 40° 25.51' 121° 29.47' 40.4252 -121.4912 LC85-781 LVC-BV 62.27 16.84 1.11 3.98 4.97 2.94 5.95 3.49 2.53 0.65 0.16 0.08 1.14 99.03 1.69 56.8 67 422 779 22 155 7 ad "Andesites of Diller Sequence, undivided" MZ 40° 32.94' 121° 32.13' 40.5490 -121.5355 LC85-783 LVC-BV 64.10 16.30 1.02 3.68 4.60 2.20 4.79 4.60 2.20 0.75 0.26 0.09 0.64 99.16 2.09 51.5 51 417 824 28 207 10 amc Andesites of Mill Canyon LP 40° 27.86' 121° 33.69' 40.4643 -121.5615 LC85-787 LVC-BV 54.76 17.62 1.61 5.80 7.25 4.48 8.85 3.72 1.43 1.17 0.44 0.13 0.92 99.99 1.62 57.9 30 736 531 20 156 7 amc Andesites of Mill Canyon LP 40° 27.65' 121° 33.15' 40.4608 -121.5525 LC86-806 RSE 49.64 17.71 1.59 8.12 9.55 7.16 10.91 3.13 0.26 1.15 0.16 0.17 <0.01 100.82 1.33 61.1 1 299 144 24 101 2 80 88 54 150 bbz Tholeiitic basalts of Buzzard Springs CM 40° 22.24' 121° 25.01' 40.3707 -121.4168 LC86-810 RNW 49.53 18.35 1.37 6.97 8.19 7.52 11.83 3.01 0.22 0.94 0.10 0.16 <0.02 100.50 1.09 65.8 bhc Hat Creek Basalt (tholeiitic) OS 40° 40.81' 121° 25.41' 40.6802 -121.4235 LC86-828 CVF-P 51.37 17.83 1.72 6.19 7.74 7.75 10.37 2.77 0.62 1.01 0.22 0.14 0.85 99.96 1.00 69.0 13.1 1060 304 20 119 7 94 72 48 208 bp2 Unit 2 [Basalts of Poison Butte] PL 40° 40.68' 121° 12.85' 40.6780 -121.2142 LC86-829 CVF-P 51.51 17.24 1.63 5.87 7.33 9.20 10.42 2.57 0.61 0.71 0.12 0.13 0.18 100.44 0.80 73.7 6.5 239 187 15 75 2 158 90 46 401 bg4 Unit 4 [Basalts of old railroad grade] PL 40° 39.08' 121° 13.60' 40.6513 -121.2267 LC86-831 CVF-B 52.81 17.00 1.76 6.32 7.90 7.09 8.26 3.41 1.50 1.32 0.40 0.13 <0.01 100.69 1.11 66.7 38.1 588 568 24 173 10 113 45 74 214 bdt Basalt of Twin Buttes PL 40° 37.60' 121° 13.67' 40.6267 -121.2278 LC86-832 CVF-B 52.88 17.12 1.74 6.28 7.85 6.88 8.30 3.41 1.51 1.32 0.41 0.14 0.06 100.55 1.14 66.1 37 607 563 23 172 11 bdt Basalt of Twin Buttes BB 40° 37.23' 121° 13.06' 40.6205 -121.2177 LC86-834 CVF-P 49.38 16.59 1.96 7.05 8.81 10.46 10.06 2.68 0.53 0.92 0.22 0.16 0.03 100.22 0.84 72.6 14.6 409 262 19 100 6 203 87 64 397 bc1 Unit 1 [Basalts of Cone Lake Road] BB 40° 34.48' 121° 11.05' 40.5747 -121.1842 LC86-836 CVF-P 49.29 17.16 1.94 7.00 8.75 9.31 10.68 2.75 0.53 0.95 0.24 0.16 <0.01 101.01 0.94 70.3 bc2 Unit 2 [Basalts of Cone Lake Road] BB 40° 33.83' 121° 10.31' 40.5638 -121.1718 LC86-838 CVF-TU 56.32 18.94 1.50 5.39 6.74 4.13 7.81 3.76 1.08 0.78 0.18 0.11 0.41 100.38 1.63 57.7 23 616 399 17 118 4 mtt Basaltic andesite of Turnaround Lake RC 40° 29.07' 121° 12.79' 40.4845 -121.2132 LC86-839 CVF-R 59.91 16.90 1.29 4.64 5.80 4.15 6.67 3.41 1.93 0.72 0.27 0.10 0.68 99.32 1.40 61.4 40 467 728 22 171 7 arr Andesite of Red Cinder RC 40° 29.34' 121° 13.59' 40.4890 -121.2265 LC86-841 CVF-TU 55.65 19.09 1.49 5.37 6.72 4.47 8.30 3.63 0.99 0.74 0.15 0.11 0.35 100.14 1.50 59.7 20 603 358 17 105 4 mtt Basaltic andesite of Turnaround Lake BB 40° 30.58' 121° 12.94' 40.5097 -121.2157 LC86-843 CVF-C 54.69 19.04 1.56 5.62 7.03 4.95 8.50 3.47 1.08 0.80 0.16 0.12 0.19 99.35 1.42 61.1 24 644 348 18 106 5 mcj Basaltic andesite of Jewel Lake BB 40° 30.29' 121° 11.34' 40.5048 -121.1890 LC86-844 CVF-C 54.55 18.98 1.56 5.60 7.01 5.01 8.62 3.54 1.07 0.79 0.16 0.12 0.10 100.71 1.40 61.4 21 654 344 16 104 4 mcj Basaltic andesite of Jewel Lake BB 40° 30.08' 121° 10.84' 40.5013 -121.1806 LC86-845 CVF-CL 54.45 18.08 1.64 5.91 7.39 5.59 8.65 3.35 1.04 0.89 0.26 0.13 0.34 100.20 1.32 62.8 20 508 457 21 129 7 ml18 Basaltic andesite of hill 1868 PL 40° 39.13' 121° 12.57' 40.6522 -121.2095 LC86-847 CVF-P 52.84 17.72 1.64 5.90 7.37 6.45 9.37 3.22 1.30 1.00 0.43 0.13 0.44 100.00 1.14 66.1 22.7 805 1044 26 162 7 bp6 Unit 6 [Basalts of Poison Butte] PL 40° 39.07' 121° 11.01' 40.6512 -121.1835 LC86-848 CVF-P 52.42 19.15 1.68 6.03 7.54 5.33 9.37 3.55 0.98 1.00 0.36 0.13 0.04 99.86 1.41 61.2 bb5 Unit 5 [Basalts and basaltic andesites of Bogard Buttes] BB 40° 36.87' 121° 09.91' 40.6145 -121.1652 LC86-849 CVF-P 51.39 17.66 1.81 6.52 8.15 6.94 9.93 3.19 0.87 1.22 0.33 0.15 <0.01 100.94 1.17 65.5 17 500 352 24 135 12 bs5 Unit 5 [Basalts of Stephens Campground] BB 40° 36.82' 121° 10.04' 40.6137 -121.1673 LC86-865 DVC 74.97 13.71 0.33 1.19 1.49 0.45 1.45 3.66 3.93 0.23 0.05 0.03 0.56 98.53 3.33 40.1 rd3 "Rhyolites of Dittmar Volcanic Center, Stage 3" RP 40° 28.74' 121° 24.87' 40.4790 -121.4145 LC86-869 DVC 71.55 14.94 0.52 1.86 2.32 1.03 2.76 4.00 2.84 0.35 0.10 0.05 1.30 97.90 2.25 49.8 rd3 "Rhyolites of Dittmar Volcanic Center, Stage 3" RP 40° 28.57' 121° 22.94' 40.4761 -121.3823 LC86-872A DVC 70.95 15.32 0.51 1.84 2.30 0.87 3.01 4.34 2.66 0.34 0.10 0.05 0.91 99.43 2.66 45.6 77 353 866 19 157 7 rd3 "Rhyolites of Dittmar Volcanic Center, Stage 3" MH 40° 27.86' 121° 22.50' 40.4644 -121.3749 LC86-872B DVC 53.89 20.84 1.34 4.82 6.02 4.05 8.22 3.87 1.46 1.02 0.35 0.15 2.78 97.95 1.49 60.0 32 625 543 33 155 11 rd3 "Rhyolites of Dittmar Volcanic Center, Stage 3" mafic inclusion MH 40° 27.84' 121° 22.47' 40.4640 -121.3745 LC86-879 LVC-R 65.72 16.97 0.76 2.74 3.42 1.81 4.66 4.42 2.26 0.45 0.15 0.06 1.62 98.14 1.89 54.1 56 712 832 16 140 6 dbl Dacite of Bench Lake RP 40° 27.58' 121° 25.55' 40.4597 -121.4258 LC86-883 LVC-B 64.95 16.19 0.87 3.14 3.92 2.84 5.05 4.02 2.23 0.49 0.16 0.07 1.98 98.58 1.38 61.7 52 485 756 17 148 6 dsc Dacite of Summit Creek RP 40° 28.03' 121° 24.72' 40.4672 -121.4120 LC86-886 DVC 60.58 17.26 1.12 4.03 5.04 3.28 6.26 4.08 2.29 0.70 0.32 0.08 0.65 98.33 1.54 59.2 64 738 842 20 173 7 ad2 "Andesites of Dittmar Volcanic Center, Stage 2, undivided" MH 40° 28.66' 121° 18.34' 40.4777 -121.3057 LC86-891 LVC-TY 60.39 16.78 1.16 4.17 5.22 3.82 6.70 3.93 1.86 0.84 0.25 0.09 0.65 99.98 1.37 62.0 44 574 584 18 160 9 ac Andesite of Crater Butte MH 40° 28.87' 121° 19.90' 40.4812 -121.3317 LC86-901 LVC-BV 58.58 17.28 1.31 4.72 5.90 4.56 7.14 3.85 1.40 0.83 0.22 0.10 0.65 100.05 1.29 63.2 33 617 453 21 147 3 amc Andesites of Mill Canyon LP 40° 24.03' 121° 31.29' 40.4005 -121.5215 LC86-910 LVC-BV 61.21 16.69 1.19 4.28 5.35 3.64 5.96 3.55 2.38 0.76 0.23 0.10 1.43 99.31 1.47 60.2 55 440 676 23 181 8 amd Andesite of Mount Diller LP 40° 27.73' 121° 30.85' 40.4622 -121.5142 LC86-913 LVC-TY 61.63 16.62 1.14 4.11 5.14 3.49 6.59 3.74 1.79 0.63 0.16 0.09 0.93 99.10 1.47 60.2 ah Andesite of Hat Mountain PP 40° 30.43' 121° 21.97' 40.5072 -121.3662 LC86-920 LVC-TY 55.71 17.87 1.44 5.20 6.50 4.86 8.69 3.47 1.30 1.01 0.33 0.11 0.54 100.19 1.34 62.5 28 807 490 19 146 3 ac Andesite of Crater Butte mafic inclusion MH 40° 29.42' 121° 21.16' 40.4903 -121.3527 LC86-921 LVC-TY 64.99 16.10 0.86 3.09 3.86 2.58 5.19 3.98 2.33 0.60 0.21 0.07 1.25 99.12 1.50 59.8 63 527 717 17 145 7 ac Andesite of Crater Butte MH 40° 29.42' 121° 21.16' 40.4903 -121.3527 LC86-922 LVC-TY 56.72 17.34 1.45 5.23 6.54 4.21 7.94 3.95 1.42 1.18 0.45 0.11 0.11 100.37 1.55 58.9 35 876 585 20 168 6 ac Andesite of Crater Butte MH 40° 29.49' 121° 21.16' 40.4915 -121.3527 LC86-928 LVC-TY 54.44 16.58 1.63 5.88 7.35 6.85 7.61 3.82 1.43 1.24 0.39 0.12 <0.01 100.76 1.07 67.5 26 572 540 20 153 11 mfp Basaltic andesite of Fairfield Peak PP 40° 31.38' 121° 21.71' 40.5230 -121.3618 LC86-930 CVF-R 53.25 17.78 1.66 5.98 7.47 6.31 8.82 3.68 1.07 1.03 0.29 0.13 <0.01 100.77 1.18 65.3 18 520 411 22 129 8 113 60 56 117 mrr Basaltic andesite of Red Cinder MH 40° 29.70' 121° 15.03' 40.4951 -121.2506 LC86-931 CVF-R 52.08 16.79 1.65 5.92 7.40 8.85 9.62 3.09 0.84 0.84 0.20 0.13 0.10 100.70 0.84 72.7 15 405 309 17 98 7 165 60 56 482 brc Basalt of Red Cinder Cone MH 40° 29.75' 121° 15.21' 40.4958 -121.2535 LC86-942 LVC-E 68.36 15.66 0.72 2.59 3.24 1.77 3.77 3.93 2.58 0.43 0.11 0.07 0.25 99.90 1.84 54.8 65 335 701 19 124 10 dl Dome [Dacite of Lassen Peak] LP 40° 29.79' 121° 30.01' 40.4965 -121.5002 LC86-942A LVC-E 55.37 18.89 1.55 5.59 6.98 4.53 9.06 3.22 0.83 0.70 0.13 0.12 0.27 100.13 1.54 59.1 dl Dome [Dacite of Lassen Peak] mafic inclusion LP 40° 29.79' 121° 30.01' 40.4965 -121.5002 LC86-955A LVC-TY 66.78 16.06 0.77 2.76 3.46 2.17 4.35 4.05 2.39 0.46 0.13 0.06 0.57 99.29 1.59 58.3 73 348 717 16 133 9 17 20 28 11 p2 "Pumice-fall deposit, May 22 [Deposits of the 1914–1917 eruption of Lassen Peak]" "light dacite (Clynne, 1999)" RP 40° 29.83' 121° 29.29' 40.4972 -121.4882 LC86-957 LVC-E 68.29 15.66 0.69 2.49 3.11 1.70 3.67 4.04 2.80 0.47 0.14 0.06 1.05 99.27 1.83 54.9 74 354 790 23 161 7 rsf Domes [Rhyodacite of Sunflower Flat] MZ 40° 32.46' 121° 31.09' 40.5410 -121.5182 LC86-961 LVC-E 59.56 17.62 1.15 4.13 5.16 3.77 7.14 4.31 1.38 0.63 0.13 0.17 0.09 100.35 1.37 62.0 30 436 472 24 99 6 pcd Lithic pyroclastic -flow deposit from partial collapse of Dome D [Rhyodacite of Chaos Crags] mafic inclusion MZ 40° 31.61' 121° 31.90' 40.5268 -121.5317 LC86-962 LVC-E 69.77 15.46 0.58 2.09 2.61 1.31 3.44 4.17 2.67 0.34 0.11 0.06 0.25 99.84 2.00 52.7 71 328 748 19 132 7 rcb Dome B [Rhyodacite of Chaos Crags] clast in unit pcd MZ 40° 31.65' 121° 32.01' 40.5274 -121.5334 LC86-975 LVC-E 65.77 16.44 0.83 2.97 3.71 2.35 4.95 3.95 2.11 0.43 0.12 0.07 0.16 99.46 1.58 58.5 dl Dome [Dacite of Lassen Peak] collected from talus LP 40° 28.95' 121° 30.84' 40.4825 -121.5140 LC86-988A LVC-B 66.00 16.35 0.80 2.89 3.61 2.18 4.92 3.92 2.27 0.46 0.13 0.07 0.80 99.41 1.66 57.3 58 491 678 22 151 7 dmz Dacite of upper Manzanita Creek MZ 40° 30.23' 121° 31.49' 40.5038 -121.5248 LC86-988B LVC-B 59.86 16.84 1.41 5.07 6.34 3.86 7.08 3.55 1.36 0.63 0.22 0.12 0.35 99.12 1.64 57.5 dmz Dacite of upper Manzanita Creek mafic inclusion MZ 40° 30.23' 121° 31.49' 40.5038 -121.5248 LC86-992 LVC-E 69.69 15.53 0.58 2.08 2.61 1.20 3.18 4.23 2.92 0.40 0.13 0.05 0.76 99.38 2.17 50.7 72 346 839 21 169 9 r27 Rhyodacite of section 27 MZ 40° 30.26' 121° 30.94' 40.5043 -121.5157 LC86-997 LVC-B 69.42 15.69 0.57 2.07 2.59 1.29 3.33 4.22 2.82 0.39 0.13 0.06 0.80 99.04 2.01 52.5 73 356 797 22 155 6 rd Rhyodacite of Dersch Meadows WP 40° 30.59' 121° 27.71' 40.5099 -121.4619 LC86-1011B LVC-E 69.33 16.07 0.56 2.02 2.53 1.38 3.38 4.07 2.65 0.37 0.11 0.05 2.98 97.29 1.83 54.9 69 338 698 18 135 7 psf Pumiceous pyroclastic-flow deposits [Rhyodacite of Sunflower Flat] MZ 40° 33.50' 121° 31.86' 40.5583 -121.5310 LC86-1045 LVC-R 73.31 14.37 0.43 1.56 1.94 0.79 2.35 3.40 3.34 0.32 0.09 0.04 2.79 96.88 2.48 47.4 71 243 859 18 125 6 pr Rockland tephra SH 40° 25.44' 121° 58.98' 40.4240 -121.9830 LC86-1052 LVC-R 72.34 14.69 0.48 1.72 2.15 0.81 2.50 3.71 3.27 0.34 0.09 0.05 2.59 97.50 2.64 45.7 76 263 819 18 133 7 pr Rockland tephra MT 40° 26.00' 121° 46.05' 40.4333 -121.7675 LC86-1053 LVC-R 71.14 15.17 0.52 1.88 2.35 1.03 2.94 3.85 2.96 0.35 0.10 0.05 2.36 97.76 2.30 49.3 68 310 791 20 129 5 pr Rockland tephra MT 40° 25.36' 121° 46.54' 40.4227 -121.7757 LC87-1081 CVF-R 51.98 16.56 1.73 6.23 7.78 9.31 9.19 2.87 0.86 0.92 0.21 0.14 <0.01 100.35 0.84 72.7 12 409 367 20 115 10 bra Basalt of Ash Butte PP 40° 31.81' 121° 16.11' 40.5302 -121.2685 LC87-1090 CVF-P 51.50 17.33 1.78 6.41 8.02 7.15 9.55 3.24 1.16 1.22 0.50 0.14 0.13 99.94 1.12 66.5 br2 Unit 2 [Basalt of Robbers Spring] BB 40° 35.15' 121° 10.89' 40.5858 -121.1815 LC87-1107 CVF-C 54.31 19.80 1.48 5.34 6.67 5.16 8.85 3.33 0.86 0.64 0.10 0.12 0.25 100.57 1.29 63.3 mce Basaltic andesite of Eleanor Lake BB 40° 31.09' 121° 11.58' 40.5182 -121.1930 LC87-1121 CVF-B 55.92 17.37 1.50 5.41 6.77 5.55 7.46 3.69 1.51 1.08 0.38 0.12 0.56 100.21 1.22 64.6 mdb1 Unit 1 [Basaltic andesites of Black Butte] BB 40° 32.38' 121° 14.21' 40.5397 -121.2368 LC87-1144 LVC-TY 59.00 15.08 1.24 4.48 5.60 7.56 7.14 3.08 1.66 0.53 0.13 0.10 <0.01 99.98 0.74 75.0 mp2 "Flow 2, Painted Dunes [Basaltic andesites of Cinder Cone]" PP 40° 32.11' 121° 17.81' 40.5352 -121.2968 LC87-1153 DVC 57.23 17.04 1.47 5.28 6.60 5.01 8.72 3.14 1.22 0.63 0.12 0.13 0.45 100.35 1.32 62.8 Tad "Andesites of Dittmar Volcanic Center, Stage 1, undivided" MH 40° 29.69' 121° 17.10' 40.4948 -121.2850 LC87-1159 LVC-TY 57.07 16.19 1.38 4.98 6.22 6.74 7.67 3.32 1.55 0.80 0.19 0.12 0.19 100.61 0.92 70.7 mf1 "Flow 1, Fantastic Lava Beds [Basaltic andesites of Cinder Cone]" PP 40° 32.82' 121° 17.63' 40.5470 -121.2938 LC87-1160 LVC-TY 56.33 16.44 1.42 5.10 6.37 7.08 7.98 3.23 1.39 0.75 0.17 0.12 0.09 100.33 0.90 71.2 mf2 "Flow 2, Fantastic Lava Beds [Basaltic andesites of Cinder Cone]" PP 40° 32.79' 121° 17.67' 40.5465 -121.2945 LC87-1166 CVF-R 53.04 18.11 1.72 6.19 7.74 5.86 7.99 3.71 1.48 1.31 0.44 0.14 <0.01 100.61 1.32 62.8 mrc Basaltic andesite Red Cinder Cone PP 40° 30.36' 121° 15.68' 40.5060 -121.2613 LC87-1175 RNW 59.85 17.29 1.23 4.42 5.53 4.17 6.84 3.79 1.46 0.66 0.20 0.09 <0.01 100.57 1.33 62.7 a22 Andesite of section 22 PP 40° 31.81' 121° 17.59' 40.5302 -121.2931 LC87-1181 LVC-BV 62.82 17.34 0.94 3.39 4.24 2.92 5.55 3.88 2.13 0.75 0.22 0.06 0.74 99.55 1.45 60.6 amd Andesite of Mount Diller unmapped small plug of amd in amc LP 40° 27.18' 121° 33.43' 40.4530 -121.5572 LC87-1186 LVC-BV 61.98 16.72 1.13 4.07 5.08 3.60 6.16 3.48 1.97 0.62 0.19 0.09 1.50 98.54 1.41 61.2 amc Andesites of Mill Canyon LP 40° 27.04' 121° 33.44' 40.4507 -121.5573 LC87-1191 LVC-BV 56.47 17.24 1.50 5.40 6.75 4.34 8.29 3.72 1.45 1.07 0.40 0.11 0.44 99.76 1.56 58.9 amc Andesites of Mill Canyon LP 40° 28.09' 121° 34.20' 40.4682 -121.5700 LC87-1193 LVC-BV 61.91 17.56 1.02 3.66 4.58 3.15 6.40 3.81 1.59 0.63 0.20 0.07 0.05 100.07 1.45 60.5 amd Andesite of Mount Diller LP 40° 28.04' 121° 33.73' 40.4673 -121.5622 LC87-1194 LVC-BV 63.88 16.91 0.95 3.43 4.28 2.26 5.08 4.28 2.14 0.70 0.28 0.08 1.44 98.52 1.89 54.1 amc Andesites of Mill Canyon LP 40° 27.84' 121° 33.77' 40.4640 -121.5628 LC87-1194A LVC-BV 57.06 17.77 1.36 4.89 6.11 4.26 8.57 3.52 1.37 0.77 0.30 0.11 1.33 99.02 1.43 60.8 amc Andesites of Mill Canyon mafic inclusion LP 40° 27.84' 121° 33.77' 40.4640 -121.5628 LC87-1195 LVC-BV 65.33 16.66 0.88 3.18 3.98 1.76 4.46 4.54 2.18 0.68 0.25 0.07 0.47 99.39 2.27 49.6 amc Andesites of Mill Canyon LP 40° 27.91' 121° 34.30' 40.4652 -121.5717 LC87-1203 LVC-TY 63.22 17.70 0.92 3.33 4.16 2.77 5.92 3.88 1.53 0.51 0.14 0.07 0.91 99.22 1.50 59.7 46 843 456 22 139 6 ae Andesite of Eagle Peak LP 40° 28.42' 121° 31.07' 40.4737 -121.5178 LC87-1204 LVC-E 71.59 15.02 0.47 1.70 2.13 0.94 2.69 4.20 2.91 0.33 0.10 0.05 2.07 97.41 2.27 49.5 86 333 837 21 150 12 pe Pumiceous pyroclastic-flow deposits [Rhyodacite of Eagle Peak] LP 40° 28.37' 121° 31.19' 40.4728 -121.5198 LC87-1205A LVC-E 56.98 18.42 1.28 4.61 5.77 4.50 8.39 3.48 1.24 0.81 0.19 0.09 0.83 99.32 1.28 63.5 re Dome and flow [Rhyodacite of Eagle Peak] mafic inclusion LP 40° 28.70' 121° 31.21' 40.4783 -121.5202 LC87-1211 LVC-TY 64.37 16.52 0.93 3.37 4.21 2.88 5.08 3.94 2.15 0.54 0.14 0.08 0.09 99.64 1.46 60.4 62 434 623 21 135 10 d4 "Dacite dome, May 14–19 [Deposits of the 1914–1917 eruption of Lassen Peak]" "black dacite (Clynne, 1999)" LP 40° 29.35' 121° 30.44' 40.4892 -121.5073 LC87-1211A LVC-TY 58.31 18.00 1.31 4.70 5.88 4.45 7.34 3.57 1.40 0.67 0.14 0.10 0.06 100.50 1.32 62.8 48 538 426 22 114 6 d4 "Dacite dome, May 14–19 [Deposits of the 1914–1917 eruption of Lassen Peak]" "mafic inclusion, black dacite (Clynne, 1999)" LP 40° 29.35' 121° 30.44' 40.4892 -121.5073 LC87-1214 LVC-E 69.80 15.36 0.58 2.10 2.63 1.32 3.22 4.18 2.86 0.41 0.11 0.05 0.89 98.51 1.99 52.9 81 365 841 24 169 11 r27 Rhyodacite of section 27 MZ 40° 30.35' 121° 30.18' 40.5058 -121.5030 LC87-1230 LVC-B 65.68 16.27 0.88 3.18 3.98 2.25 4.81 3.87 2.31 0.52 0.15 0.07 0.19 99.92 1.77 55.8 dc Dacite of Crescent Crater WP 40° 30.44' 121° 29.40' 40.5073 -121.4900 LC87-1236 LVC-R 72.48 14.33 0.52 1.86 2.33 1.06 2.46 3.68 3.07 0.38 0.12 0.05 3.60 95.81 2.20 50.3 78 263 856 19 145 7 pr Rockland tephra MT 40° 26.22' 121° 51.69' 40.4370 -121.8615 LC88-1250 LVC-R 74.67 14.16 0.32 1.14 1.42 0.36 1.85 3.64 3.46 0.25 0.10 0.04 2.99 96.15 3.91 36.3 pr Rockland tephra MT 40° 26.28' 121° 51.63' 40.4380 -121.8605 LC88-1267 RNW 53.74 16.37 1.50 5.40 6.75 8.74 10.25 2.81 0.48 0.50 0.08 0.12 0.03 100.15 0.77 74.2 4 597 137 10 61 7 mbx Basaltic andesite of Box Canyon WP 40° 36.93' 121° 24.66' 40.6155 -121.4110 LC88-1281 LVC-E 53.65 19.57 1.63 5.89 7.36 4.67 9.98 2.84 0.87 0.67 0.10 0.13 0.12 99.25 1.58 58.6 rcb Dome B [Rhyodacite of Chaos Crags] "mafic inclusion, collected from talus" MZ 40° 31.40' 121° 31.96' 40.5233 -121.5327 LC88-1284A LVC-E 53.57 18.87 1.77 6.38 7.97 4.75 9.66 2.98 1.00 0.78 0.11 0.14 0.36 99.82 1.68 57.0 14 554 160 17 71 4 16 30 71 36 pc Pumiceous pyroclastic-flow and fall deposits [Rhyodacite of Chaos Crags] mafic inclusion MZ 40° 32.57' 121° 34.71' 40.5428 -121.5785 LC88-1300 MVC 63.76 15.71 1.07 3.87 4.83 3.40 5.57 3.52 2.22 0.65 0.14 0.08 0.35 99.70 1.42 61.1 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" LY 40° 20.58' 121° 40.80' 40.3430 -121.6800 LC88-1322 RNW 48.21 17.47 1.57 8.02 9.43 9.43 11.18 2.74 0.13 0.99 0.10 0.16 <0.01 101.07 1.00 67.7 2 234 90 27 73 6 187 97 41 235 bec Tholeiitic basalt of Eagle Canyon SH 40° 25.48' 121° 59.01' 40.4247 -121.9835 LC88-1327 CVF-C 53.72 19.65 1.56 5.61 7.02 5.28 9.16 3.37 0.75 0.67 0.10 0.12 0.14 100.39 1.33 62.6 mcm Basaltic andesite of middle Caribou RC 40° 27.92' 121° 10.62' 40.4653 -121.1770 LC88-1329 CVF-C 50.21 16.23 2.06 7.43 9.29 7.26 9.16 3.76 1.43 1.73 0.58 0.14 <0.01 100.61 1.28 63.5 22.5 817 526 23 176 19 bcs Basalt of South Caribou RC 40° 27.87' 121° 10.68' 40.4645 -121.1780 LC88-1331 CVF-C 54.97 19.99 1.46 5.25 6.56 4.19 8.74 3.54 0.98 0.67 0.11 0.11 <0.01 100.63 1.57 58.7 mcn5 Unit 5 [Basaltic andesites of North Caribou] RC 40° 28.56' 121° 10.77' 40.4760 -121.1795 LC88-1332 CVF-C 56.89 18.66 1.50 5.40 6.75 3.96 7.66 3.79 1.16 0.71 0.13 0.12 0.15 100.26 1.70 56.7 mcn4 Unit 4 [Basaltic andesites of North Caribou] RC 40° 28.94' 121° 09.99' 40.4823 -121.1665 LC88-1348 CVF-C 54.38 19.43 1.49 5.37 6.71 5.37 8.94 3.36 0.84 0.62 0.09 0.11 <0.01 100.44 1.25 64.1 mcn2 Unit 2 [Basaltic andesites of North Caribou] RC 40° 28.93' 121° 10.91' 40.4822 -121.1818 LC88-1370 MVC 63.25 17.45 1.07 3.85 4.81 2.01 5.28 4.60 1.60 0.60 0.20 0.10 0.15 99.56 2.40 48.2 32 459 21 134 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" MN 40° 16.20' 121° 34.64' 40.2700 -121.5773 LC88-1372 MVC 64.08 16.25 0.97 3.51 4.39 2.89 5.50 3.84 2.16 0.58 0.14 0.08 0.34 99.48 1.52 59.4 53 411 21 162 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" MN 40° 16.12' 121° 36.11' 40.2687 -121.6018 LC88-1373 MVC 64.46 16.72 0.88 3.17 3.96 3.07 5.67 4.02 1.30 0.47 0.16 0.08 0.96 99.01 1.29 63.3 23 629 16 117 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" MN 40° 16.51' 121° 36.18' 40.2752 -121.6030 LC88-1375 MVC 57.47 17.34 1.32 4.75 5.93 5.25 8.69 3.19 1.05 0.68 0.15 0.11 0.60 99.70 1.13 66.4 15 754 14 85 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" MN 40° 17.52' 121° 37.07' 40.2920 -121.6178 LC88-1382 MVC 61.26 16.93 1.10 3.95 4.93 4.19 6.55 3.87 1.32 0.56 0.18 0.09 0.58 99.68 1.18 65.4 24 474 16 110 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" MN 40° 17.36' 121° 33.95' 40.2893 -121.5658 LC88-1386 MVC 55.84 14.80 1.44 5.19 6.49 9.84 8.23 2.74 1.22 0.48 0.11 0.12 1.20 99.24 0.66 77.2 31 344 16 80 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" MN 40° 20.61' 121° 32.38' 40.3435 -121.5397 LC88-1387 MVC 63.36 16.17 1.00 3.59 4.48 3.19 5.50 3.83 2.47 0.61 0.22 0.07 0.67 99.35 1.40 61.3 72 476 21 151 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" MN 40° 19.91' 121° 31.57' 40.3318 -121.5262 LC88-1392 MVC 75.12 13.37 0.28 1.01 1.27 0.44 1.33 3.60 4.54 0.25 0.04 0.02 2.86 96.55 2.91 43.3 129 129 16 143 rmp Rhyolite of Mill Creek Plateau MN 40° 16.79' 121° 31.90' 40.2799 -121.5317 LC88-1393 MVC 59.08 15.38 1.35 4.85 6.06 6.44 7.14 3.15 1.72 0.67 0.12 0.10 0.57 99.38 0.94 70.3 41 331 24 140 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" MN 40° 15.25' 121° 32.68' 40.2542 -121.5447 LC88-1394 MVC 65.10 15.69 0.93 3.36 4.20 2.75 5.11 3.52 2.78 0.55 0.14 0.06 1.34 98.53 1.53 59.3 73 311 25 155 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" MN 40° 21.09' 121° 33.01' 40.3515 -121.5501 LC88-1402 RNW 48.10 17.90 1.58 8.03 9.45 8.75 11.40 2.72 0.17 1.08 0.10 0.17 <0.01 100.89 1.08 66.0 bhc Hat Creek Basalt (tholeiitic) OS 40° 40.55' 121° 26.07' 40.6758 -121.4345 LC88-1403 RNW 48.13 17.74 1.58 8.08 9.51 8.59 11.46 2.84 0.19 1.10 0.12 0.17 <0.01 101.25 1.11 65.5 bhc Hat Creek Basalt (tholeiitic) OS 40° 38.52' 121° 25.59' 40.6420 -121.4265 LC88-1408 LVC-TY 54.08 15.99 1.53 5.51 6.88 8.89 8.92 3.05 1.07 0.70 0.15 0.12 <0.01 100.65 0.77 74.2 mo Old Bench flow [Basaltic andesites of Cinder Cone] PP 40° 33.03' 121° 18.67' 40.5505 -121.3112 LC88-1410 LVC-TY 57.45 16.70 1.43 5.17 6.46 5.19 8.12 3.56 1.25 0.85 0.16 0.12 0.46 99.96 1.24 64.2 27 354 21 108 a74 Andesite of hill 7416 PP 40° 36.79' 121° 21.72' 40.6132 -121.3620 LC88-1411 RNW-S 54.78 17.45 1.68 6.04 7.55 5.34 8.03 3.62 1.42 1.12 0.39 0.12 0.43 99.78 1.41 61.2 29 608 23 158 msl Basaltic andesite of Little Potato Butte OS 40° 38.88' 121° 25.85' 40.6480 -121.4308 LC88-1413 DVC 55.04 17.24 1.61 5.80 7.25 5.71 9.78 3.08 0.84 0.64 0.12 0.13 0.21 100.39 1.27 63.7 Tad "Andesites of Dittmar Volcanic Center, Stage 1, undivided" MH 40° 29.68' 121° 17.40' 40.4947 -121.2900 LC88-1427 LVC-R 65.27 16.34 0.88 3.18 3.98 2.46 5.19 4.03 1.96 0.48 0.14 0.07 0.39 99.48 1.62 58.0 47 466 15 127 dp Dacite of Panther Creek RP 40° 26.02' 121° 25.64' 40.4337 -121.4273 LC88-1440 LVC-E 66.55 15.86 0.82 2.96 3.69 2.37 4.62 3.88 2.31 0.44 0.12 0.07 0.30 99.95 1.56 58.8 dl Dome [Dacite of Lassen Peak] RP 40° 29.07' 121° 29.78' 40.4845 -121.4963 LC88-1440A LVC-E 55.59 16.76 1.51 5.45 6.81 6.54 9.35 3.05 0.89 0.61 0.12 0.12 0.20 100.26 1.04 68.2 dl Dome [Dacite of Lassen Peak] mafic inclusion RP 40° 29.07' 121° 29.78' 40.4845 -121.4963 LC88-1447 RNW 48.15 17.79 1.58 8.07 9.50 8.69 11.46 2.71 0.15 1.10 0.12 0.17 <0.01 100.37 1.09 65.7 bhc Hat Creek Basalt (tholeiitic) OS 40° 39.61' 121° 26.29' 40.6602 -121.4382 LC88-1448A LVC-E 57.21 19.00 1.34 4.83 6.04 3.70 7.81 3.97 1.00 0.82 0.21 0.10 1.25 98.94 1.63 57.7 27 1180 16 109 pe Pumiceous pyroclastic-flow deposits [Rhyodacite of Eagle Peak] mafic inclusion MZ 40° 32.26' 121° 35.71' 40.5377 -121.5982 LC88-1448B LVC-E 55.33 18.72 1.33 4.80 6.00 5.28 9.34 3.33 0.81 0.80 0.16 0.10 0.99 98.84 1.14 66.2 pe Pumiceous pyroclastic-flow deposits [Rhyodacite of Eagle Peak] mafic inclusion MZ 40° 32.26' 121° 35.71' 40.5377 -121.5952 LC89-1460 LVC-E 67.88 15.89 0.71 2.57 3.21 1.77 4.00 4.06 2.51 0.41 0.12 0.06 0.01 99.72 1.82 55.1 dl Dome [Dacite of Lassen Peak] LP 40° 29.27' 121° 30.23' 40.4878 -121.5038 LC89-1460A LVC-E 56.18 18.52 1.49 5.36 6.70 4.53 8.80 3.27 0.95 0.67 0.12 0.11 0.01 100.46 1.48 60.1 dl Dome [Dacite of Lassen Peak] mafic inclusion LP 40° 29.27' 121° 30.23' 40.4878 -121.5038 LC89-1466 LVC-E 55.89 17.78 1.42 5.11 6.39 5.71 8.35 3.23 1.38 0.77 0.22 0.11 0.95 98.96 1.12 66.6 31 728 17 115 rk Flows [Rhyodacite of Kings Creek] mafic inclusion RP 40° 28.44' 121° 29.72' 40.4740 -121.4953 LC89-1474 LVC-B 68.94 15.64 0.62 2.24 2.80 1.39 3.42 4.31 2.83 0.42 0.13 0.06 1.11 98.74 2.01 52.6 71 362 15 154 dc Dacite of Crescent Crater WP 40° 30.93' 121° 28.86' 40.5155 -121.4810 LC89-1512 LVC-E 52.55 19.23 1.73 6.23 7.79 5.24 10.47 2.98 0.61 0.72 0.09 0.14 0.27 100.03 1.49 60.0 rca Dome A [Rhyodacite of Chaos Crags] mafic inclusion in clast of dome A in unit pc MZ 40° 30.52' 121° 31.08' 40.5087 -121.5180 LC89-1514 LVC-B 66.32 15.95 0.86 3.10 3.87 2.10 4.54 3.98 2.42 0.51 0.15 0.07 0.09 99.41 1.84 54.7 60 488 18 154 d82 Dacite of hill 8283 MZ 40° 30.43' 121° 30.78' 40.5072 -121.5130 LC89-1514A LVC-B 55.58 18.86 1.50 5.40 6.75 4.14 8.64 3.53 1.20 0.80 0.24 0.11 0.30 99.73 1.63 57.7 32 939 14 131 d82 Dacite of hill 8283 mafic inclusion MZ 40° 30.43' 121° 30.78' 40.5072 -121.5130 LC89-1528A LVC-E 55.28 18.19 1.54 5.56 6.95 5.17 9.28 3.09 0.98 0.67 0.13 0.12 0.08 100.66 1.34 62.4 dl Dome [Dacite of Lassen Peak] mafic inclusion MZ 40° 30.02' 121° 30.78' 40.5003 -121.5129 LC90-1552 RNW-S 56.05 17.35 1.54 5.56 6.95 4.62 7.78 3.68 1.45 1.46 0.37 0.12 0.32 100.34 1.50 59.7 ms47 Basaltic andesite of hill 4709 OS 40° 38.87' 121° 26.98' 40.6478 -121.4497 LC90-1555 RNW-S 58.45 17.12 1.41 5.06 6.33 4.43 7.00 3.63 1.66 0.83 0.30 0.11 0.60 99.27 1.43 60.9 asp Andesite of Potato Butte OS 40° 39.19' 121° 24.81' 40.6532 -121.4135 LC91-1571 MVC 62.86 16.30 1.09 3.92 4.90 3.44 5.63 3.27 2.57 0.64 0.18 0.10 1.70 97.95 1.43 61.0 61 382 21 169 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" MN 40° 20.91' 121° 33.02' 40.3485 -121.5503 LC91-1578 MVC 62.64 17.05 0.99 3.57 4.46 3.28 6.31 3.94 1.28 0.63 0.23 0.09 0.37 99.35 1.36 62.1 19 1100 15 108 Tab Andesite of South Fork Battle Creek LY 40° 21.37' 121° 39.44' 40.3562 -121.6573 LC91-1583 MVC 61.23 15.36 1.16 4.19 5.24 5.03 6.94 2.97 2.28 0.60 0.13 0.10 2.34 97.32 1.04 68.1 56 290 19 156 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" MN 40° 21.58' 121° 36.90' 40.3597 -121.6150 LC91-1604 MVC 63.82 16.01 1.00 3.58 4.48 3.22 5.60 3.67 2.19 0.63 0.18 0.09 1.39 98.30 1.39 61.6 52 558 23 161 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" BK 40° 12.73' 121° 44.62' 40.2122 -121.7437 LC91-1606 MVC 62.02 16.14 1.18 4.23 5.29 3.62 6.27 3.78 1.79 0.70 0.17 0.10 1.06 98.81 1.46 60.4 49 312 25 152 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" MN 40° 21.94' 121° 36.42' 40.3657 -121.6070 LC91-1608 MVC 65.98 16.76 0.87 3.14 3.93 2.65 3.42 3.60 2.80 0.53 0.16 0.08 3.08 95.65 1.48 60.0 76 338 17 144 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" MN 40° 21.65' 121° 32.36' 40.3608 -121.5393 LC91-1609 MVC 58.25 17.67 1.36 4.88 6.11 4.70 7.54 3.72 0.94 0.64 0.18 0.12 0.57 99.42 1.30 63.2 20 402 21 86 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" LY 40° 21.81' 121° 37.70' 40.3636 -121.6283 LC91-1611 MVC 64.81 15.55 1.02 3.68 4.60 2.79 5.01 3.94 2.29 0.67 0.16 0.09 0.41 99.28 1.65 57.5 60 323 26 190 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" LY 40° 21.62' 121° 39.47' 40.3603 -121.6578 LC91-1613 RSE 55.52 17.47 1.52 5.46 6.83 6.14 8.87 3.39 0.62 0.71 0.15 0.13 0.16 100.05 1.11 66.7 9 355 21 82 mbc Basaltic andesites of South Fork Battle Creek LY 40° 21.68' 121° 39.05' 40.3613 -121.6508 LC92-1621 MVC 65.59 16.58 0.80 2.87 3.59 2.60 5.72 3.70 1.35 0.53 0.19 0.08 3.02 96.65 1.38 61.7 25 1020 16 111 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" LY 40° 21.33' 121° 38.38' 40.3555 -121.6397 LC92-1642 MVC 54.50 16.42 1.61 5.80 7.25 7.83 8.87 3.05 0.86 0.77 0.16 0.14 0.29 99.76 0.93 70.6 19 455 20 96 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" LY 40° 19.33' 121° 37.69' 40.3222 -121.6282 LC92-1644 MVC 56.01 18.33 1.51 5.43 6.79 4.45 8.52 3.59 1.08 0.74 0.20 0.14 0.39 99.70 1.53 59.4 30 407 24 93 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" LY 40° 19.51' 121° 37.67' 40.3252 -121.6273 LC92-1645 MVC 64.01 16.33 0.90 3.24 4.05 3.47 6.16 3.81 1.25 0.57 0.18 0.08 1.09 98.76 1.17 65.6 19 1080 12 104 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" MN 40° 19.57' 121° 37.32' 40.3262 -121.6220 LC92-1660 MVC 59.19 14.07 1.43 5.13 6.41 7.80 7.45 2.86 1.30 0.53 0.12 0.13 0.49 99.94 0.82 73.0 31 408 19 109 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" MN 40° 17.67' 121° 36.49' 40.2945 -121.6082 LC92-1662 MVC 57.93 16.69 1.29 4.65 5.81 6.07 7.73 3.50 1.21 0.63 0.18 0.11 0.25 99.78 0.96 70.0 19 719 15 95 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" MN 40° 17.38' 121° 36.55' 40.2897 -121.6092 LC92-1690 RNW-T 55.85 18.18 1.52 5.47 6.84 4.67 7.71 3.61 1.53 0.99 0.36 0.12 0.44 99.07 1.46 60.4 33 594 23 150 mt5 Basaltic andesite of section 5 TH 40° 39.52' 121° 31.81' 40.6587 -121.5302 LC92-1692 RNW-T 55.57 18.22 1.52 5.49 6.86 4.46 7.80 3.80 1.54 1.06 0.41 0.12 0.35 99.40 1.54 59.2 32 624 18 158 mt61 Basaltic andesite of hill 6138 TH 40° 39.12' 121° 31.78' 40.6520 -121.5297 LC92-1717 RNW 55.18 17.15 1.49 5.36 6.70 7.30 8.37 3.20 0.97 0.67 0.18 0.13 0.56 99.72 0.92 70.8 21 469 19 84 am "Older regional andesites and basaltic andesites, undivided" VI 40° 34.34' 121° 41.05' 40.5723 -121.6842 LC92-1720 RNW 50.56 17.56 1.45 7.38 8.69 8.33 9.33 3.17 0.66 1.11 0.29 0.16 0.06 100.50 1.04 66.8 8.2 379 23 119 bk1 Unit 1 [Tholeiitic basalts of Big Lake] from cone buried by unit bk2 MZ 40° 36.88' 121° 37.26' 40.6147 -121.6210 LC92-1757 RNW-S 60.69 17.28 1.23 4.41 5.52 3.25 6.44 3.73 1.85 0.73 0.28 0.10 0.86 98.85 1.70 56.8 ass Andesite of Sugarloaf Peak OS 40° 41.71' 121° 25.50' 40.6951 -121.4250 LC93-1807 RNW 55.85 15.88 1.48 5.31 6.64 7.97 8.85 2.80 0.91 0.66 0.16 0.12 0.64 99.42 0.83 72.8 19 616 18 96 mhr Basaltic andesite of Hootman Ranch SH 40° 25.97' 121° 56.80' 40.4328 -121.9466 LC93-1810 RNW 56.24 15.72 1.46 5.24 6.55 7.98 8.61 2.92 0.89 0.66 0.17 0.12 0.38 99.80 0.82 73.1 19 606 15 96 mhr Basaltic andesite of Hootman Ranch MT 40° 27.56' 121° 51.22' 40.4593 -121.8537 LC93-1863 MVC 74.25 13.83 0.32 1.16 1.46 0.49 1.59 3.62 4.35 0.28 0.06 0.03 0.55 98.44 2.98 42.8 129 162 16 145 rlp Rhyolite of Lost Creek Plateau CM 40° 16.79' 121° 23.96' 40.2798 -121.3993 LC93-1866 DVC 58.40 16.90 1.39 5.02 6.28 5.04 6.91 3.57 1.62 0.82 0.21 0.11 0.18 99.36 1.25 64.1 40 416 25 138 Tad "Andesites of Dittmar Volcanic Center, Stage 1, undivided" MH 40° 25.64' 121° 19.93' 40.4273 -121.3322 LC93-1872 MVC 74.07 14.03 0.33 1.20 1.50 0.48 1.57 3.37 4.55 0.29 0.06 0.03 2.35 97.06 3.10 41.8 125 160 15 150 rsm Rhyolite of North Stover Mountain ST 40° 19.63' 121° 18.45' 40.3272 -121.3075 LC93-1877 MVC 58.00 18.08 1.27 4.59 5.73 4.50 7.73 3.35 1.49 0.69 0.18 0.11 0.81 98.95 1.27 63.6 33 526 20 98 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" MN 40° 19.60' 121° 33.87' 40.3267 -121.5645 LC93-1962 LVC-E 55.63 18.61 1.53 5.49 6.87 4.70 9.04 2.95 1.14 0.66 0.11 0.13 0.56 98.92 1.46 60.4 25 526 16 72 rca Dome A [Rhyodacite of Chaos Crags] "mafic inclusion collected from clast in pyroclastic flow, unit pc" MZ 40° 30.57' 121° 31.23' 40.5095 -121.5205 LC93-1963A LVC-E 56.12 18.81 1.52 5.49 6.86 4.23 8.71 3.11 1.08 0.68 0.12 0.13 0.01 99.50 1.62 57.8 24 545 14 75 rcf Dome F [Rhyodacite of Chaos Crags] "mafic inclusion, collected from talus" MZ 40° 31.88' 121° 30.36' 40.5313 -121.5060 LC93-1970 RSE 49.27 18.85 1.53 7.78 9.15 7.92 10.55 2.67 0.16 0.99 0.11 0.16 1.36 98.47 1.16 64.5 0 271 26 79 bwv Tholeiitic basalt of Warner Valley ST 40° 17.07' 121° 15.91' 40.2845 -121.2652 LC93-1980 ROC 48.51 17.65 1.62 8.25 9.71 8.75 10.69 2.73 0.25 1.20 0.16 0.18 0.01 100.07 1.11 65.4 5 243 35 92 brk Tholeiitic basalt of Rock Creek CH 40° 17.91' 121° 08.50' 40.2985 -121.1417 LC94-2051 RSE 48.88 17.90 1.50 7.63 8.97 8.97 11.06 2.65 0.19 0.93 0.13 0.16 0.01 100.26 1.00 67.7 0 227 26 70 bwv Tholeiitic basalt of Warner Valley CH 40° 19.55' 121° 14.13' 40.3258 -121.2355 LC95-2190 LVC-TY 57.06 15.64 1.34 4.81 6.01 7.92 7.88 3.06 1.41 0.62 0.14 0.12 0.00 99.44 0.76 74.6 mp2 "Flow 2, Painted Dunes [Basaltic andesites of Cinder Cone]" PP 40° 31.94' 121° 19.33' 40.5323 -121.3222 LC96-2218 LVC-TY 56.35 16.29 1.40 5.04 6.30 7.31 7.69 3.34 1.45 0.79 0.22 0.12 0.27 99.49 0.86 72.1 mf1 "Flow 1, Fantastic Lava Beds [Basaltic andesites of Cinder Cone]" PP 40° 33.79' 121° 18.06' 40.5632 -121.3010 LC97-2265 LVC-TY 55.05 16.94 1.49 5.37 6.72 7.18 8.20 3.32 1.28 0.85 0.20 0.12 -0.16 99.75 0.94 70.4 mf2 "Flow 2, Fantastic Lava Beds [Basaltic andesites of Cinder Cone]" PP 40° 33.84' 121° 17.71' 40.5639 -121.2951 LC97-2276 LVC-B 65.73 16.48 0.86 3.11 3.89 2.15 4.63 3.94 2.34 0.52 0.15 0.08 0.56 98.61 1.81 55.1 60 532 16 147 d82 Dacite of hill 8283 WP 40° 31.10' 121° 29.79' 40.5183 -121.4965 LC97-2278 LVC-B 66.39 15.91 0.88 3.17 3.96 2.17 4.38 3.88 2.45 0.54 0.14 0.08 0.46 99.10 1.83 55.0 62 490 17 158 d82 Dacite of hill 8283 MZ 40° 30.56' 121° 30.54' 40.5093 -121.5090 LC97-2293 LVC-B 66.54 16.43 0.77 2.76 3.45 2.06 4.37 3.99 2.36 0.50 0.13 0.07 1.51 97.71 1.67 57.2 60 509 18 149 dv Dacite of Vulcans Castle LP 40° 28.61' 121° 31.85' 40.4768 -121.5309 LC97-2298 LVC-E 58.58 17.99 1.26 4.52 5.65 4.14 7.39 3.47 1.50 0.79 0.26 0.11 0.85 98.29 1.36 62.0 45 838 22 140 rk Flows [Rhyodacite of Kings Creek] mafic inclusion RP 40° 28.65' 121° 28.90' 40.4775 -121.4817 LC00-2351 RNW 59.30 17.44 1.32 4.76 5.95 3.79 6.77 3.40 1.94 0.81 0.35 0.12 0.56 99.17 1.57 58.7 awp Andesites of West Prospect Peak OS 40° 37.75' 121° 22.99' 40.6292 -121.3817 LC00-2352 LVC-E 68.35 15.81 0.71 2.55 3.19 1.74 3.91 3.75 2.51 0.43 0.16 0.07 0.16 100.21 1.83 54.9 rcc Dome C [Rhyodacite of Chaos Crags] MZ 40° 31.47' 121° 31.06' 40.5245 -121.5177 LC02-2389 RNW-T 56.30 17.68 1.46 5.25 6.57 5.55 7.33 3.63 1.47 0.87 0.34 0.12 0.55 98.98 1.18 65.3 mtu Basaltic andesite of Tumble Buttes TH 40° 40.29' 121° 33.53' 40.6716 -121.5588 LC02-2393 LVC-E 58.92 17.25 1.30 4.69 5.87 4.63 7.82 3.31 1.25 0.60 0.11 0.11 0.45 99.63 1.27 63.8 dl Dome [Dacite of Lassen Peak] mafic inclusion collected from talus RP 40° 29.62' 121° 29.22' 40.4937 -121.4870 LC02-2394 LVC-E 57.55 17.99 1.32 4.74 5.92 4.61 7.53 3.52 1.46 0.82 0.35 0.11 0.81 98.34 1.29 63.4 rk Flows [Rhyodacite of Kings Creek] mafic inclusion RP 40° 29.11' 121° 28.57' 40.4852 -121.4762 LC02-2395 LVC-B 69.33 15.53 0.61 2.19 2.73 1.26 3.11 4.29 3.00 0.47 0.14 0.07 1.24 98.75 2.17 50.7 dh Dacite of Mt. Helen RP 40° 28.41' 121° 29.97' 40.4735 -121.4995 LC02-2397A LVC-E 55.51 18.50 1.44 5.19 6.49 5.10 8.23 3.31 1.34 0.92 0.35 0.11 1.56 98.39 1.27 63.7 pk Pumiceous pyroclastic-flow deposits [Rhyodacite of Kings Creek] mafic inclusion LP 40° 28.50' 121° 30.07' 40.4750 -121.5012 LC03-2404 RNW 49.49 17.54 1.44 7.36 8.66 9.12 10.58 2.76 0.35 0.98 0.21 0.16 -0.06 100.03 0.95 68.8 b44 Tholeiitic basalt of Calif. Hwy 44 SW 40° 38.28' 121° 21.65' 40.6380 -121.3608 LF01-005 LVC-BV 56.84 15.75 1.41 5.07 6.34 7.50 8.37 3.07 1.01 0.67 0.20 0.11 0.23 99.61 0.85 72.5 amc Andesites of Mill Canyon LP 40° 24.79' 121° 30.69' 40.4131 -121.5115 LF01-007 LVC-BV 54.03 17.00 1.59 5.73 7.17 7.70 8.76 3.11 0.91 0.79 0.25 0.13 0.31 99.47 0.93 70.5 amc Andesites of Mill Canyon LP 40° 24.77' 121° 30.64' 40.4128 -121.5107 LF01-008 LVC-BV 56.05 17.84 1.52 5.49 6.86 5.38 7.85 3.49 1.16 0.85 0.25 0.12 0.28 99.27 1.27 63.6 amc Andesites of Mill Canyon LP 40° 24.78' 121° 30.67' 40.4129 -121.5112 LF01-009 LVC-BV 57.43 17.14 1.43 5.16 6.45 5.04 7.22 3.63 1.59 0.91 0.32 0.12 0.74 98.59 1.28 63.5 amc Andesites of Mill Canyon LP 40° 24.78' 121° 30.59' 40.4130 -121.5099 LF01-016 LVC-BV 61.97 17.43 1.04 3.75 4.69 3.18 6.12 3.88 1.63 0.68 0.22 0.09 0.12 99.65 1.47 60.2 adc Andesite of Digger Creek LP 40° 29.16' 121° 34.66' 40.4860 -121.5777 LF01-017 LVC-BV 66.05 16.77 0.86 3.10 3.87 1.52 3.80 4.58 2.26 0.72 0.27 0.07 0.89 98.14 2.54 46.7 amc Andesites of Mill Canyon LP 40° 27.78' 121° 34.49' 40.4629 -121.5748 LF01-018 LVC-BV 61.71 17.55 1.06 3.83 4.78 3.24 6.24 3.86 1.55 0.66 0.21 0.09 0.19 99.59 1.48 60.1 amc Andesites of Mill Canyon LP 40° 27.71' 121° 34.49' 40.4618 -121.5748 LF01-019 LVC-BV 60.39 17.28 1.23 4.44 5.54 3.22 6.57 3.87 1.77 0.82 0.30 0.10 0.90 98.85 1.72 56.4 amc Andesites of Mill Canyon LP 40° 27.54' 121° 34.60' 40.4590 -121.5767 LF01-020 LVC-BV 55.48 17.81 1.52 5.48 6.85 5.59 7.66 3.73 1.25 1.06 0.30 0.11 0.70 98.28 1.23 64.5 amc Andesites of Mill Canyon LP 40° 27.49' 121° 34.57' 40.4582 -121.5761 LF01-021 LVC-BV 60.13 17.01 1.27 4.56 5.69 3.81 6.34 3.87 1.81 0.83 0.28 0.11 0.65 99.29 1.50 59.8 amc Andesites of Mill Canyon LP 40° 27.36' 121° 34.54' 40.4559 -121.5757 LF01-024 LVC-BV 59.43 17.33 1.25 4.49 5.62 4.35 6.89 3.45 1.67 0.75 0.28 0.10 1.24 98.58 1.29 63.3 amc Andesites of Mill Canyon LP 40° 25.82' 121° 31.21' 40.4303 -121.5202 LF01-048 LVC-BV 59.22 17.26 1.27 4.59 5.73 4.36 7.05 3.27 1.86 0.75 0.28 0.11 1.36 98.44 1.32 62.9 amc Andesites of Mill Canyon LP 40° 25.56' 121° 31.63' 40.4260 -121.5271 LF01-049 LVC-BV 58.07 17.13 1.39 5.00 6.25 4.72 6.88 3.38 1.97 1.00 0.35 0.11 1.60 98.01 1.32 62.7 amc Andesites of Mill Canyon LP 40° 25.58' 121° 31.62' 40.4263 -121.5269 LF01-050 LVC-BV 59.33 17.36 1.24 4.48 5.60 4.32 6.96 3.40 1.75 0.77 0.29 0.11 1.36 98.42 1.30 63.2 amc Andesites of Mill Canyon LP 40° 25.59' 121° 31.65' 40.4265 -121.5275 LF01-051 LVC-BV 59.46 17.34 1.24 4.46 5.57 4.26 6.92 3.39 1.80 0.76 0.28 0.10 1.28 98.53 1.31 63.0 amc Andesites of Mill Canyon LP 40° 25.61' 121° 31.66' 40.4268 -121.5276 LF01-052 LVC-BV 60.04 17.89 1.10 3.95 4.94 4.02 7.17 3.69 1.19 0.66 0.20 0.09 0.29 99.37 1.23 64.5 amc Andesites of Mill Canyon LP 40° 25.62' 121° 31.71' 40.4270 -121.5285 LF01-053 LVC-BV 54.64 16.91 1.64 5.90 7.37 6.73 7.68 3.61 1.36 1.05 0.35 0.13 <0.01 100.02 1.10 67.0 amc Andesites of Mill Canyon LP 40° 25.69' 121° 31.94' 40.4282 -121.5323 LK88-49 ROC 51.64 16.71 1.86 6.69 8.36 8.58 9.25 3.13 0.80 0.94 0.25 0.15 <0.01 100.66 0.97 69.6 13.9 400 349 21 107 6 156 58 53 336 bnt Basalt of Bonte Peak MH 40° 26.46' 121° 15.85' 40.4410 -121.2642 LK88-54 CVF-I 52.69 17.26 1.79 6.46 8.07 6.79 7.92 3.82 1.36 1.25 0.50 0.14 <0.01 100.36 1.19 65.2 30 536 573 29 177 16 122 49 55 152 bii Basalt of Island Lake MH 40° 27.18' 121° 15.91' 40.4530 -121.2652 LK88-61 ROC 54.84 17.61 1.62 5.85 7.31 5.39 7.86 3.66 1.53 1.07 0.43 0.13 0.25 100.02 1.36 62.2 mb Basaltic andesite of Black Cinder Rock MH 40° 27.38' 121° 15.43' 40.4563 -121.2572 LK88-72 ROC 55.02 17.54 1.62 5.84 7.30 5.40 7.76 3.74 1.46 1.07 0.42 0.13 0.01 100.43 1.35 62.3 mb Basaltic andesite of Black Cinder Rock RC 40° 27.23' 121° 14.21' 40.4538 -121.2368 LK88-89 CVF-R 52.25 17.15 1.69 6.08 7.60 7.74 9.77 3.11 0.87 0.96 0.26 0.13 <0.01 100.97 0.98 69.4 18 433 319 22 114 11 103 59 44 219 br80 Basalt of hill 8030 RC 40° 28.87' 121° 14.09' 40.4812 -121.2348 LL85-58 CVF-R 59.60 17.09 1.28 4.60 5.75 4.22 6.85 3.64 1.66 0.68 0.27 0.10 0.05 99.83 1.36 62.0 arr Andesite of Red Cinder RC 40° 29.38' 121° 13.83' 40.4897 -121.2306 LL85-61 CVF-R 52.10 17.00 1.71 6.16 7.70 7.93 9.72 3.14 0.88 0.96 0.26 0.14 0.01 100.53 0.97 69.7 br80 Basalt of hill 8030 RC 40° 29.02' 121° 14.03' 40.4836 -121.2339 LL85-64 CVF-R 56.33 18.41 1.39 5.00 6.26 4.17 7.74 4.00 1.57 0.82 0.44 0.12 0.32 100.10 1.50 59.8 mrg2 Unit 2 [Basaltic andesites of Long Lake] RC 40° 28.68' 121° 14.20' 40.4781 -121.2367 LL85-83 CVF-TU 55.70 19.37 1.47 5.29 6.61 4.10 8.01 3.96 1.04 0.76 0.18 0.11 0.26 100.03 1.61 58.0 mtt Basaltic andesite of Turnaround Lake RC 40° 29.05' 121° 12.82' 40.4842 -121.2136 LL85-134 ROC 54.15 18.12 1.68 6.06 7.57 5.19 8.09 3.72 1.32 1.13 0.40 0.13 0.28 100.12 1.46 60.4 mb Basaltic andesite of Black Cinder Rock RC 40° 27.73' 121° 14.30' 40.4622 -121.2383 LL85-370 CVF-BT 51.54 15.94 1.88 6.78 8.47 8.66 8.72 3.45 1.14 1.29 0.43 0.14 0.17 100.48 0.98 69.5 bbh Basalt of Hidden Lakes RC 40° 27.23' 121° 12.32' 40.4539 -121.2053 LL85-613 CVF-C 55.29 19.33 1.54 5.54 6.92 4.18 8.38 3.83 0.96 0.72 0.12 0.12 0.01 100.81 1.65 57.4 mee1 Unit 1 [Basaltic andesites of Echo Lake] RC 40° 26.37' 121° 09.40' 40.4394 -121.1567 LL85-667 CVF-C 50.01 16.20 2.08 7.49 9.36 7.24 9.04 3.95 1.48 1.78 0.58 0.15 0.01 100.63 1.29 63.3 bcs Basalt of South Caribou RC 40° 26.89' 121° 11.00' 40.4482 -121.1833 LL85-680 CVF-C 52.78 16.79 1.73 6.24 7.80 7.86 9.54 3.14 0.79 0.82 0.17 0.14 0.05 100.63 0.99 69.2 bci Basalt of Indian Meadow RC 40° 26.35' 121° 11.33' 40.4392 -121.1889 LL85-681 CVF-C 53.96 19.81 1.51 5.43 6.78 5.09 9.04 3.46 0.84 0.65 0.10 0.11 0.28 99.67 1.33 62.6 mcm Basaltic andesite of middle Caribou RC 40° 26.55' 121° 11.22' 40.4425 -121.1869 LL85-743 ROC 48.90 18.56 1.42 7.24 8.52 8.02 11.58 2.82 0.27 0.89 0.14 0.16 0.22 101.09 1.06 66.4 brk Tholeiitic basalt of Rock Creek RC 40° 25.78' 121° 11.65' 40.4297 -121.1941 LM79-369 LVC-BV 55.44 17.07 1.60 5.76 7.20 6.12 7.56 3.45 1.54 1.05 0.28 0.13 0.29 54.90 1.18 65.4 amc Andesites of Mill Canyon RP 40° 23.99' 121° 29.64' 40.3998 -121.4940 LM79-422 DVC 59.64 15.94 1.26 4.52 5.66 4.42 7.00 3.56 2.42 0.81 0.34 0.10 0.24 100.27 1.28 63.5 Taw Andesite of Wild Cattle Mountain CM 40° 21.03' 121° 25.77' 40.3506 -121.4296 LM79-433 RSE 61.18 16.93 1.11 3.99 4.99 4.20 6.97 3.99 0.86 0.57 0.11 0.08 0.44 99.66 1.19 65.2 amr Andesite of Martin Creek LP 40° 23.19' 121° 34.91' 40.3866 -121.5818 LM79-468 MVC 75.46 13.16 0.28 1.02 1.28 0.38 1.16 3.79 4.44 0.26 0.04 0.01 2.48 97.39 3.36 39.9 rb Rhyolite of Blue Ridge GP 40° 23.11' 121° 41.11' 40.3852 -121.6851 LM79-469 MVC 75.40 13.26 0.28 1.01 1.27 0.40 1.16 3.58 4.61 0.24 0.04 0.01 2.24 98.13 3.18 41.2 rb Rhyolite of Blue Ridge LY 40° 22.22' 121° 43.56' 40.3703 -121.7260 LM80-814 RSE 55.55 16.95 1.53 5.50 6.88 5.95 7.75 3.78 1.56 1.00 0.31 0.12 0.16 100.34 1.16 65.8 msm Basaltic andesite of Small Butte CM 40° 22.49' 121° 26.15' 40.3748 -121.4358 LM80-824 LVC-BV 60.22 17.25 1.25 4.50 5.62 3.62 6.24 3.73 2.07 0.81 0.21 0.10 0.14 99.63 1.55 58.9 amc Andesites of Mill Canyon RP 40° 25.21' 121° 29.74' 40.4201 -121.4957 LM80-830 LVC-BV 59.63 17.25 1.27 4.58 5.73 3.99 6.45 3.85 1.87 0.78 0.24 0.09 0.41 99.61 1.44 60.8 52 487 633 21 164 9 amc Andesites of Mill Canyon LP 40° 25.12' 121° 30.68' 40.4187 -121.5113 LM80-854 LVC-BV 60.10 18.05 1.07 3.86 4.83 4.01 7.27 3.60 1.16 0.63 0.16 0.08 0.26 99.59 1.20 64.9 amc Andesites of Mill Canyon RP 40° 25.34' 121° 29.83' 40.4223 -121.4971 LM80-855 LVC-B 69.35 15.87 0.58 2.10 2.62 1.21 2.88 4.35 3.05 0.44 0.10 0.05 0.69 99.15 2.16 50.8 rmc Rhyodacite of Mount Conard RP 40° 25.19' 121° 29.66' 40.4198 -121.4943 LM80-867 RSE 48.67 17.75 1.56 7.93 9.33 8.04 11.37 3.02 0.24 1.05 0.21 0.17 0.34 101.15 1.16 64.4 bbz Tholeiitic basalts of Buzzard Springs CM 40° 21.51' 121° 24.94' 40.3585 -121.4157 LM80-873 LVC-BV 55.19 15.90 1.50 5.41 6.77 7.95 9.24 3.05 0.82 0.66 0.16 0.12 0.49 100.63 0.85 72.4 18 660 285 15 100 3 amc Andesites of Mill Canyon LP 40° 24.48' 121° 30.46' 40.4081 -121.5077 LM80-875 LVC-BV 59.88 16.89 1.26 4.54 5.68 4.18 6.36 3.84 1.92 0.79 0.24 0.10 0.29 100.54 1.36 62.1 45 476 649 21 165 9 amc Andesites of Mill Canyon LP 40° 24.48' 121° 30.34' 40.4079 -121.5056 LM80-876 LVC-BV 57.08 17.14 1.46 5.26 6.58 5.18 7.24 3.77 1.58 0.88 0.28 0.11 0.40 99.74 1.27 63.7 38 450 589 21 161 7 amc Andesites of Mill Canyon LP 40° 24.60' 121° 30.50' 40.4100 -121.5084 LM80-884 LVC-BV 56.64 17.14 1.50 5.41 6.77 4.34 7.86 3.99 1.55 1.07 0.37 0.11 0.25 100.35 1.56 58.8 37 603 641 23 172 8 amc Andesites of Mill Canyon LP 40° 24.74' 121° 30.70' 40.4123 -121.5117 LM80-899 LVC-B 69.42 15.79 0.58 2.11 2.63 1.11 2.88 4.46 3.04 0.46 0.10 0.05 0.66 68.60 2.36 48.5 rmc Rhyodacite of Mount Conard LP 40° 25.84' 121° 30.57' 40.4307 -121.5094 LM80-901 LVC-B 69.81 15.56 0.55 1.97 2.46 1.11 2.80 4.46 3.17 0.42 0.10 0.05 0.98 99.20 2.22 50.1 rmc Rhyodacite of Mount Conard RP 40° 26.15' 121° 29.98' 40.4359 -121.4996 LM80-908 RSE 49.58 17.86 1.54 7.83 9.21 7.44 10.94 3.14 0.31 1.04 0.16 0.16 <0.01 100.51 1.24 62.9 bbz Tholeiitic basalts of Buzzard Springs RP 40° 24.07' 121° 25.78' 40.4012 -121.4296 LM80-910 RSE 57.43 17.64 1.40 5.04 6.30 4.65 7.68 3.78 1.25 0.77 0.24 0.12 0.24 100.33 1.35 62.2 bsm Basalts and basaltic andesites of Sifford Mountain RP 40° 24.10' 121° 23.61' 40.4017 -121.3935 LM80-913 RSE 55.83 17.97 1.48 5.31 6.64 5.12 8.24 3.59 1.18 0.86 0.30 0.12 0.64 99.64 1.30 63.2 bsm Basalts and basaltic andesites of Sifford Mountain RP 40° 23.51' 121° 23.85' 40.3919 -121.3974 LM81-1117A LVC-BV 61.37 17.15 1.19 4.27 5.34 3.27 5.84 3.76 2.06 0.77 0.22 0.09 1.34 98.22 1.63 57.7 amc Andesites of Mill Canyon LP 40° 27.43' 121° 30.85' 40.4572 -121.5141 LM81-1146 RNW 52.76 16.78 1.67 6.02 7.53 8.36 10.01 2.71 0.73 0.68 0.12 0.14 0.24 100.04 0.90 71.2 13 342 248 23 84 3 ahc "Andesites, basaltic andesites, and basalts of Hat Creek Rim" OS 40° 40.87' 121° 23.54' 40.6811 -121.3924 LM82-1274 RSE 48.55 17.99 1.57 8.00 9.41 7.96 11.16 3.03 0.22 1.12 0.24 0.17 0.31 100.37 1.18 64.0 3 375 141 24 93 4 bbz Tholeiitic basalts of Buzzard Springs CM 40° 21.63' 121° 23.70' 40.3605 -121.3951 LM82-1276 DVC 62.45 17.48 1.00 3.62 4.52 2.81 5.86 3.83 2.09 0.62 0.15 0.08 0.69 99.35 1.61 58.1 58 548 620 21 165 4 ad2 "Andesites of Dittmar Volcanic Center, Stage 2, undivided" ST 40° 20.52' 121° 18.67' 40.3420 -121.3111 LM82-1282 RSE 48.74 17.95 1.52 7.75 9.12 8.32 11.23 2.87 0.24 1.00 0.20 0.16 0.11 100.57 1.10 65.7 1 354 126 19 84 2 117 91 54 174 bbz Tholeiitic basalts of Buzzard Springs CM 40° 21.48' 121° 24.27' 40.3580 -121.4045 LM82-1286B RSE 48.12 18.01 1.55 7.88 9.27 9.20 11.10 2.76 0.15 0.96 0.10 0.17 <0.01 100.84 1.01 67.5 3 228 95 26 73 1 151 118 34 175 bwv Tholeiitic basalt of Warner Valley ST 40° 20.05' 121° 18.33' 40.3342 -121.3054 LM87-1333 CVF-CL 50.80 17.47 1.80 6.49 8.11 7.75 9.11 3.45 1.14 1.48 0.37 0.14 <0.01 100.92 1.05 68.1 17.6 545 370 28 161 19 118 55 63 240 bl21 Basalt of hill 2109 BB 40° 35.98' 121° 14.49' 40.5997 -121.2415 LM87-1351 CVF-C 55.39 18.53 1.50 5.39 6.73 5.35 8.15 3.65 1.00 0.76 0.18 0.12 <0.01 100.98 1.26 63.9 24 541 425 23 111 6 mtr Basaltic andesite of Triangle Lake BB 40° 31.67' 121° 12.84' 40.5278 -121.2140 LM87-1360 CVF-C 50.41 16.93 1.93 6.94 8.67 8.54 9.03 3.42 0.94 1.34 0.39 0.15 <0.01 101.16 1.02 68.7 17.3 488 332 30 150 17 204 69 84 451 bcw Basalt of Caribou Wilderness BB 40° 31.71' 121° 12.11' 40.5285 -121.2018 LM87-1384 CVF-C 49.73 15.58 1.84 6.64 8.30 10.68 9.80 2.89 0.92 1.32 0.46 0.15 <0.01 100.88 0.78 74.2 20.1 601 408 26 148 12 bcw Basalt of Caribou Wilderness BB 40° 32.16' 121° 11.78' 40.5360 -121.1963 LM87-1430 CVF-R 52.79 17.99 1.66 5.98 7.47 6.60 9.08 3.40 1.03 1.05 0.29 0.13 0.04 101.26 1.13 66.3 22 482 402 25 128 8 br25 Basalt of section 25 PP 40° 32.00' 121° 15.46' 40.5333 -121.2577 LM87-1434 CVF-R 52.45 17.19 1.68 6.07 7.58 7.68 9.46 3.15 0.92 0.98 0.28 0.14 <0.01 101.34 0.99 69.3 20 453 352 25 123 8 br22 Basalt of hill 2283 PP 40° 31.97' 121° 15.04' 40.5328 -121.2507 LM87-1442 CVF-R 52.10 16.51 1.76 6.33 7.91 9.56 9.10 2.90 0.64 0.84 0.14 0.14 <0.01 101.28 0.83 72.9 13.6 408 279 24 86 4 193 71 63 382 brw Basalt of Widow Lake PP 40° 32.48' 121° 15.24' 40.5413 -121.2540 LM87-1443 RNW 56.34 18.28 1.43 5.16 6.45 4.65 8.21 3.45 1.28 0.84 0.23 0.12 0.51 100.14 1.39 61.6 26 476 470 24 132 6 ap Andesite and basaltic andesite of Prospect Peak PP 40° 34.44' 121° 20.48' 40.5740 -121.3414 LM87-1467 CVF-S 52.71 18.14 1.72 6.18 7.72 6.32 8.84 3.44 1.17 1.04 0.32 0.14 <0.01 101.04 1.22 64.6 20 537 502 26 147 9 bsl Basalt of Lost Spring PP 40° 34.59' 121° 16.97' 40.5766 -121.2828 LM87-1503 CVF-R 60.32 17.00 1.26 4.55 5.69 3.94 6.50 3.53 1.85 0.68 0.25 0.11 0.11 100.48 1.44 60.7 47 467 745 26 173 9 arr Andesite of Red Cinder RC 40° 29.91' 121° 14.45' 40.4985 -121.2408 LM87-1530 CVF-R 52.36 17.29 1.74 6.26 7.82 7.03 9.15 3.32 1.15 1.23 0.33 0.14 <0.01 100.77 1.11 66.7 16.3 514 418 25 136 12 brt1 Unit 1 [Basalts of Triangle Lake] BB 40° 30.92' 121° 13.09' 40.5153 -121.2182 LM87-1547 CVF-S 51.40 17.80 1.78 6.42 8.03 6.82 9.49 3.56 0.95 1.15 0.48 0.14 <0.01 100.12 1.18 65.4 22 725 417 25 137 9 bss2 Unit 2 [Basalt of Sunrise Peak] PP 40° 33.44' 121° 16.80' 40.5573 -121.2800 LM87-1548 CVF-S 52.29 16.70 1.77 6.38 7.97 7.04 8.65 3.69 1.49 1.42 0.44 0.14 <0.01 100.73 1.13 66.3 29.2 763 525 29 156 16 bss1 Unit 1 [Basalt of Sunrise Peak] PP 40° 33.54' 121° 16.72' 40.5590 -121.2787 LM87-1549 RNW 60.53 17.11 1.21 4.37 5.46 3.73 6.53 3.38 2.22 0.64 0.19 0.10 0.80 99.28 1.46 60.4 50 463 703 27 152 5 abl Andesite of Butte Lake PP 40° 33.75' 121° 16.98' 40.5624 -121.2830 LM88-1596 RNW 57.63 18.27 1.35 4.88 6.09 4.04 7.85 3.37 1.54 0.75 0.21 0.11 0.60 99.62 1.51 59.6 36 476 525 22 142 6 31 47 53 30 alg Andesite of Logan Mountain TH 40° 40.88' 121° 30.93' 40.6813 -121.5155 LM88-1597 RNW 58.19 19.90 1.18 4.24 5.30 3.20 7.89 3.62 0.98 0.57 0.14 0.09 0.59 99.45 1.66 57.4 25 736 357 20 102 4 aw Andesite of Wilcox Peak OS 40° 40.92' 121° 29.53' 40.6820 -121.4922 LM88-1609 CVF-C 54.79 19.33 1.49 5.36 6.70 5.12 8.84 3.34 0.89 0.63 0.10 0.11 <0.01 100.43 1.31 63.0 mc8 Unit 8 [Basaltic andesites of Silver Lake] RC 40° 29.23' 121° 10.78' 40.4871 -121.1796 LM88-1611 CVF-C 55.67 18.92 1.56 5.62 7.02 4.53 7.95 3.65 1.05 0.80 0.13 0.12 0.05 100.50 1.55 59.0 mcr Basaltic andesite of Rim Lake RC 40° 29.19' 121° 11.30' 40.4865 -121.1883 LM88-1614A CVF-BT 51.65 17.42 1.86 6.70 8.37 7.00 7.79 3.98 1.37 1.61 0.48 0.14 -0.23 100.06 1.20 65.1 bbp Basalt of Posey Lake RC 40° 26.36' 121° 12.28' 40.4393 -121.2047 LM88-1615 CVF-TU 53.06 19.60 1.51 5.42 6.77 5.57 9.74 3.31 0.79 0.75 0.15 0.11 0.26 100.11 1.22 64.7 mte Basaltic andesites of Evelyn Lake RC 40° 26.63' 121° 12.78' 40.4438 -121.2130 LM88-1616 CVF-BT 52.57 16.51 1.78 6.39 7.99 8.07 8.70 3.39 1.04 1.09 0.31 0.15 -0.05 100.01 0.99 69.2 bbb Basalt of Beauty Lake RC 40° 26.79' 121° 12.65' 40.4464 -121.2108 LM88-1619 CVF-BT 51.94 16.18 1.86 6.69 8.36 7.87 8.89 3.40 1.23 1.36 0.45 0.14 <0.01 100.86 1.06 67.7 24.7 666 498 24 141 10 119 39 63 219 bbh Basalt of Hidden Lakes RC 40° 27.36' 121° 12.56' 40.4560 -121.2093 LM88-1635A CVF-C 55.51 17.47 1.62 5.83 7.28 5.24 7.71 3.63 1.45 1.03 0.39 0.13 0.10 100.27 1.39 61.6 mc71 Basaltic andesite of hill 7114 RC 40° 27.55' 121° 11.92' 40.4592 -121.1987 LM88-1684 CVF-C 54.53 19.31 1.50 5.39 6.74 5.22 8.91 3.33 0.91 0.66 0.12 0.12 0.06 100.54 1.29 63.3 mcn1 Unit 1 [Basaltic andesites of North Caribou] RC 40° 29.21' 121° 10.67' 40.4868 -121.1778 LM88-1702 CVF-C 53.45 19.76 1.56 5.60 7.00 5.66 9.19 3.28 0.68 0.62 0.09 0.12 0.15 100.34 1.24 64.3 mc8 Unit 8 [Basaltic andesites of Silver Lake] RC 40° 29.82' 121° 11.82' 40.4970 -121.1970 LM88-1707 ROC 51.68 17.36 1.82 6.55 8.19 7.33 9.18 3.27 1.12 1.21 0.32 0.14 0.20 100.37 1.12 66.6 24 517 381 22 139 14 130 56 62 111 bcg Basalt of Butte Creek Campground PP 40° 37.03' 121° 18.03' 40.6172 -121.3005 LM88-1712 ROC 56.52 17.44 1.50 5.39 6.74 5.56 7.41 3.59 1.35 0.86 0.27 0.12 0.10 100.39 1.21 64.8 Tbm Basalts and basaltic andesites of Mud Creek Rim RC 40° 24.37' 121° 13.49' 40.4062 -121.2248 LM88-1724 CVF-TU 55.12 19.04 1.53 5.50 6.87 4.80 8.47 3.64 0.90 0.74 0.15 0.11 0.21 100.39 1.43 60.9 mte Basaltic andesites of Evelyn Lake RC 40° 26.87' 121° 13.82' 40.4478 -121.2303 LM88-1725 CVF-TU 55.06 19.05 1.53 5.52 6.89 4.85 8.48 3.63 0.88 0.75 0.15 0.11 <0.01 100.87 1.42 61.0 mte Basaltic andesites of Evelyn Lake RC 40° 26.82' 121° 13.78' 40.4470 -121.2297 LM88-1730 ROC 57.17 17.26 1.45 5.22 6.52 5.16 7.22 3.71 1.52 0.88 0.30 0.11 <0.01 100.80 1.26 63.8 Tbm Basalts and basaltic andesites of Mud Creek Rim RC 40° 24.06' 121° 13.27' 40.4010 -121.2212 LM88-1737 ROC 53.11 18.01 1.82 6.55 8.19 6.11 8.47 3.51 0.97 1.03 0.26 0.15 <0.01 100.70 1.34 62.4 19 480 436 23 119 8 80 56 52 110 bnt Basalt of Bonte Peak RC 40° 24.97' 121° 15.00' 40.4162 -121.2500 LM88-1744 CVF-I 52.89 17.86 1.73 6.23 7.79 6.06 8.17 3.76 1.44 1.32 0.42 0.13 <0.01 100.91 1.29 63.4 bie Basalt of East Lake RC 40° 25.08' 121° 14.92' 40.4180 -121.2486 LM88-1777 CVF-I 53.09 17.90 1.72 6.19 7.74 5.94 8.04 3.85 1.44 1.29 0.42 0.13 <0.01 100.71 1.30 63.1 bie Basalt of East Lake RC 40° 26.50' 121° 14.72' 40.4417 -121.2454 LM88-1799 CVF-R 53.61 17.67 1.75 6.29 7.86 5.84 8.01 3.64 1.39 1.20 0.47 0.14 <0.01 100.87 1.35 62.3 32 490 515 25 144 13 99 53 46 142 mrg1 Unit 1 [Basaltic andesites of Long Lake] RC 40° 27.98' 121° 12.98' 40.4663 -121.2163 LM88-1803 CVF-R 53.19 17.10 1.75 6.30 7.87 6.82 8.20 3.55 1.40 1.19 0.36 0.14 <0.01 100.71 1.15 65.9 20 580 253 16 81 4 111 30 52 86 mrg3 Unit 3 [Basaltic andesites of Long Lake] RC 40° 28.03' 121° 13.94' 40.4672 -121.2323 LM88-1809 CVF-R 55.49 17.33 1.57 5.66 7.07 5.37 8.21 3.55 1.39 0.94 0.36 0.13 <0.01 101.01 1.32 62.8 22 602 279 17 81 3 61 47 55 75 mrg2 Unit 2 [Basaltic andesites of Long Lake] RC 40° 28.54' 121° 14.18' 40.4757 -121.2363 LM88-1818 CVF-C 53.54 18.25 1.62 5.82 7.27 7.43 8.63 3.12 0.79 0.60 0.09 0.12 <0.01 100.94 0.98 69.5 mc10 Unit 10 [Basaltic andesites of Silver Lake] RC 40° 29.64' 121° 12.19' 40.4940 -121.2032 LM88-1826 CVF-C 53.78 18.92 1.59 5.74 7.17 6.18 8.86 3.27 0.80 0.64 0.10 0.12 <0.01 101.95 1.16 65.8 mc11 Unit 11 [Basaltic andesites of Silver Lake] RC 40° 28.96' 121° 12.14' 40.4827 -121.2023 LM89-1873 LVC-E 66.21 16.17 0.80 2.88 3.60 2.45 4.83 3.91 2.14 0.42 0.11 0.07 0.60 99.25 1.47 60.2 dl Dome [Dacite of Lassen Peak] LP 40° 29.81' 121° 30.68' 40.4968 -121.5113 LM90-1909 ROC 54.72 17.97 1.63 5.87 7.33 5.37 8.05 3.42 1.54 0.94 0.36 0.13 0.28 99.70 1.37 62.0 Tmsr Basaltic andesites of Susan River BB 40° 31.75' 121° 07.94' 40.5292 -121.1323 LM90-1912 CVF-P 52.50 18.27 1.73 6.22 7.78 5.40 9.44 3.59 1.10 1.13 0.46 0.14 <0.01 100.30 1.44 60.7 bpc2 Unit 2 [Basalts of Pine Creek] BB 40° 32.75' 121° 07.81' 40.5458 -121.1302 LM90-1922 CVF-P 53.11 18.98 1.68 6.03 7.54 4.72 9.15 3.68 1.09 1.05 0.38 0.13 0.02 99.70 1.60 58.2 bb10 Unit 10 [Basalts and basaltic andesites of Bogard Buttes] BB 40° 33.98' 121° 07.65' 40.5663 -121.1275 LM90-1925 CVF-P 52.75 18.52 1.71 6.15 7.69 5.31 9.34 3.59 1.03 1.06 0.40 0.13 <0.01 100.01 1.45 60.6 bb6 Unit 6 [Basalts and basaltic andesites of Bogard Buttes] BB 40° 33.73' 121° 07.96' 40.5622 -121.1327 LM90-1927 CVF-P 52.12 18.41 1.71 6.16 7.70 5.57 8.72 3.91 1.36 1.42 0.47 0.14 <0.01 100.07 1.38 61.7 bb2 Unit 2 [Basalts and basaltic andesites of Bogard Buttes] BB 40° 33.71' 121° 08.54' 40.5619 -121.1424 LM90-1928 CVF-P 52.96 19.18 1.67 6.01 7.52 4.67 8.94 3.84 1.11 1.07 0.44 0.13 0.12 99.12 1.61 58.0 bb11 Unit 11 [Basalts and basaltic andesites of Bogard Buttes] BB 40° 34.09' 121° 09.00' 40.5682 -121.1500 LM90-1940 ROC 54.30 20.48 1.37 4.92 6.15 4.75 9.22 3.30 0.83 0.61 0.11 0.10 0.10 100.53 1.30 63.2 Tmsr Basaltic andesites of Susan River PC 40° 33.56' 121° 07.29' 40.5593 -121.1215 LM90-1942 ROC 52.16 18.49 1.69 6.09 7.61 5.50 8.71 3.95 1.36 1.43 0.48 0.14 <0.01 100.17 1.38 61.7 b11 Basalt of section 11 BB 40° 32.87' 121° 07.95' 40.5478 -121.1325 LM90-1946 CVF-P 52.31 18.11 1.75 6.31 7.89 5.55 9.51 3.59 1.09 1.18 0.47 0.14 <0.01 100.11 1.42 61.1 bb3 Unit 3 [Basalts and basaltic andesites of Bogard Buttes] BB 40° 34.62' 121° 08.38' 40.5770 -121.1397 LM90-1951 CVF-P 52.06 17.29 1.80 6.48 8.11 6.26 9.81 3.46 1.06 1.17 0.47 0.14 <0.01 100.21 1.29 63.3 bb1 Unit 1 [Basalts and basaltic andesites of Bogard Buttes] BB 40° 34.26' 121° 07.79' 40.5710 -121.1298 LM90-1956 ROC 63.53 16.57 1.01 3.64 4.56 2.79 5.72 3.32 2.66 0.52 0.14 0.08 0.89 98.77 1.64 57.7 Tdb Dacite of Bogard Buttes BB 40° 34.66' 121° 08.00' 40.5777 -121.1333 LM90-1957 CVF-P 51.38 18.73 1.73 6.25 7.81 5.94 10.52 3.30 0.72 1.02 0.26 0.15 0.01 100.53 1.31 62.9 bs3 Unit 3 [Basalts of Stephens Campground] BB 40° 34.26' 121° 09.32' 40.5710 -121.1553 LM90-1958 CVF-P 50.47 17.46 1.87 6.75 8.43 8.32 9.98 2.99 0.76 0.98 0.26 0.15 0.01 100.41 1.01 68.7 bs2 Unit 2 [Basalts of Stephens Campground] BB 40° 34.38' 121° 09.44' 40.5730 -121.1573 LM90-1979 CVF-P 52.21 17.03 1.75 6.31 7.89 6.72 9.16 3.50 1.31 1.32 0.56 0.13 0.16 99.34 1.17 65.5 br1 Unit 1 [Basalts of Robbers Spring] BB 40° 34.80' 121° 10.18' 40.5800 -121.1696 LM90-1980A CVF-P 49.01 16.71 1.99 7.17 8.96 10.27 10.17 2.69 0.57 0.98 0.29 0.16 -0.11 100.15 0.87 71.9 bc1 Unit 1 [Basalts of Cone Lake Road] BB 40° 34.43' 121° 10.22' 40.5738 -121.1703 LM90-1981 CVF-P 52.47 17.19 1.68 6.04 7.55 6.56 9.35 3.55 1.26 1.24 0.53 0.13 0.01 100.15 1.15 65.9 br3 Unit 3 [Basalts of Robbers Spring] BB 40° 35.02' 121° 10.42' 40.5837 -121.1737 LM90-1985 CVF-P 52.45 18.32 1.72 6.20 7.75 5.50 9.48 3.59 1.07 1.10 0.44 0.13 0.07 100.02 1.41 61.3 bb4 Unit 4 [Basalts and basaltic andesites of Bogard Buttes] BB 40° 35.76' 121° 10.43' 40.5960 -121.1738 LM90-2009 CVF-P 50.31 17.21 1.96 7.04 8.80 5.78 10.33 3.77 1.10 1.65 0.71 0.15 -0.05 99.56 1.52 59.4 bt3 Unit 3 [Basalts of Pittville Road] BB 40° 36.70' 121° 10.71' 40.6117 -121.1786 LM90-2012 CVF-P 53.21 19.15 1.67 6.00 7.50 4.59 8.80 3.83 1.11 1.07 0.44 0.13 0.19 99.33 1.63 57.7 bb12 Unit 12 [Basalts and basaltic andesites of Bogard Buttes] BB 40° 35.55' 121° 09.10' 40.5924 -121.1517 LM90-2018 ROC 63.38 17.38 0.95 3.41 4.26 2.41 5.81 3.48 2.53 0.46 0.13 0.07 1.19 98.19 1.77 55.8 Tdb Dacite of Bogard Buttes BB 40° 35.84' 121° 08.22' 40.5973 -121.1370 LM90-2034 CVF-P 51.05 17.05 1.85 6.67 8.34 8.46 9.20 3.09 0.98 1.18 0.31 0.15 <0.01 100.44 0.99 69.3 br5 Unit 5 [Basalts of Robbers Spring] PL 40° 37.99' 121° 09.02' 40.6332 -121.1503 LM90-2038 CVF-P 50.41 16.87 2.01 7.23 9.04 5.80 10.14 3.72 1.26 1.73 0.68 0.15 0.01 100.38 1.56 58.9 bt2 Unit 2 [Basalts of Pittville Road] PL 40° 37.64' 121° 10.11' 40.6273 -121.1685 LM90-2045 CVF-P 50.62 17.91 1.85 6.68 8.35 7.09 10.10 3.23 0.83 1.21 0.33 0.15 <0.01 100.71 1.18 65.4 bs4 Unit 4 [Basalts of Stephens Campground] BB 40° 35.76' 121° 11.25' 40.5960 -121.1875 LM90-2046 CVF-P 53.46 17.35 1.61 5.80 7.25 6.67 8.82 3.27 1.50 0.98 0.40 0.13 0.16 99.77 1.09 67.2 m20 Basaltic andesite west of hill 2078 BB 40° 35.90' 121° 10.95' 40.5983 -121.1825 LM90-2051 CVF-P 51.28 17.26 1.81 6.52 8.15 8.12 9.02 3.20 1.08 1.22 0.35 0.15 -0.01 99.20 1.00 68.9 br4 Unit 4 [Basalts of Robbers Spring] BB 40° 36.45' 121° 11.27' 40.6074 -121.1878 LM90-2070 CVF-P 50.37 16.19 2.09 7.53 9.41 6.13 9.88 3.66 1.45 1.82 0.72 0.15 0.01 100.29 1.53 59.2 bt4 Unit 4 [Basalts of Pittville Road] PL 40° 37.53' 121° 10.49' 40.6255 -121.1748 LM90-2072 CVF-P 52.32 17.24 1.73 6.24 7.79 7.03 9.26 3.31 1.18 1.18 0.39 0.14 0.19 99.30 1.11 66.8 bp5 Unit 5 [Basalts of Poison Butte] PL 40° 38.04' 121° 11.42' 40.6339 -121.1903 LM90-2078 CVF-P 50.25 16.88 1.98 7.13 8.91 6.57 10.45 3.54 0.97 1.50 0.57 0.15 0.01 100.29 1.36 62.2 bt1 Unit 1 [Basalts of Pittville Road] PL 40° 38.94' 121° 10.79' 40.6490 -121.1798 LM90-2081 CVF-P 52.40 17.33 1.72 6.20 7.75 6.99 9.30 3.18 1.14 1.20 0.41 0.13 0.20 99.35 1.11 66.8 bp5 Unit 5 [Basalts of Poison Butte] PL 40° 38.25' 121° 11.34' 40.6375 -121.1890 LM90-2093 CVF-P 52.56 16.88 1.64 5.92 7.40 7.71 10.05 3.02 0.87 0.95 0.25 0.13 <0.01 100.16 0.96 69.9 bp4 Unit 4 [Basalts of Poison Butte] PL 40° 38.97' 121° 12.34' 40.6495 -121.2057 LM90-2100 CVF-P 50.58 16.59 2.05 7.38 9.23 5.67 9.82 3.73 1.49 1.82 0.72 0.14 <0.01 100.27 1.63 57.8 bt2 Unit 2 [Basalts of Pittville Road] BB 40° 37.30' 121° 12.16' 40.6217 -121.2026 LM90-2101 CVF-CL 54.09 18.30 1.63 5.86 7.33 5.74 8.59 3.37 1.17 0.86 0.26 0.13 0.06 100.11 1.28 63.6 ml18 Basaltic andesite of hill 1868 PL 40° 37.52' 121° 12.02' 40.6253 -121.2003 LM91-2104 CVF-P 50.79 17.73 1.83 6.59 8.24 7.88 9.83 3.16 0.78 0.98 0.27 0.16 <0.01 100.56 1.05 68.1 19 415 290 21 112 10 102 69 64 265 bs2 Unit 2 [Basalts of Stephens Campground] BB 40° 36.22' 121° 11.79' 40.6037 -121.1965 LM91-2110 ROC 53.04 17.21 1.68 6.06 7.57 7.21 8.65 3.33 1.34 0.95 0.39 0.14 0.17 99.46 1.05 68.0 25 670 770 16 150 82 59 72 186 bsh Basalts and basaltic andesites of Swains Hole PL 40° 37.86' 121° 13.55' 40.6310 -121.2259 LM91-2116 CVF-P 51.17 17.09 1.63 5.88 7.36 10.15 9.84 2.64 0.60 0.70 0.14 0.14 0.14 100.13 0.72 75.5 16 454 199 24 89 4 219 85 73 450 bg4 Unit 4 [Basalts of old railroad grade] PL 40° 38.46' 121° 13.61' 40.6410 -121.2268 LM91-2117 ROC 52.11 18.14 1.77 6.36 7.96 6.81 8.70 3.38 1.14 1.12 0.32 0.15 0.01 99.92 1.17 65.6 22 579 451 27 117 4 97 54 81 134 bsh Basalts and basaltic andesites of Swains Hole PL 40° 38.62' 121° 13.08' 40.6437 -121.2180 LM91-2128 CVF-P 52.79 17.13 1.60 5.75 7.18 7.60 9.90 3.01 0.93 0.92 0.24 0.14 0.01 99.89 0.95 70.2 27 560 338 27 141 12 91 71 70 246 bp3 Unit 3 [Basalts of Poison Butte] PL 40° 39.45' 121° 14.52' 40.6574 -121.2420 LM91-2130 CVF-P 49.96 16.15 1.76 6.35 7.94 12.24 9.64 2.39 0.55 0.68 0.13 0.15 0.01 100.39 0.65 77.5 19 412 138 19 82 7 278 76 71 477 bg3 Unit 3 [Basalts of old railroad grade] PL 40° 40.26' 121° 14.61' 40.6711 -121.2436 LM91-2140 CVF-P 50.25 16.95 1.69 6.07 7.59 10.96 10.11 2.50 0.49 0.69 0.14 0.14 0.11 99.17 0.69 76.3 bg2 Unit 2 [Basalts of old railroad grade] PL 40° 38.26' 121° 13.24' 40.6376 -121.2207 LM91-2157 CVF-P 52.31 17.34 1.64 5.91 7.39 7.80 9.92 2.86 0.88 0.95 0.24 0.14 0.03 99.86 0.95 70.2 24 479 280 25 119 10 104 75 68 249 bp1 Unit 1 [Basalts of Poison Butte] PL 40° 40.93' 121° 12.33' 40.6821 -121.2055 LM91-2160 CVF-P 52.17 17.59 1.65 5.94 7.43 7.71 9.94 2.90 0.75 0.96 0.24 0.14 0.13 100.13 0.96 69.8 20 482 314 28 124 9 94 76 74 230 bp1 Unit 1 [Basalts of Poison Butte] PL 40° 41.18' 121° 11.80' 40.6863 -121.1966 LM91-2179 RNW 49.16 18.07 1.49 7.59 8.93 8.44 10.70 2.84 0.33 1.03 0.17 0.17 0.19 99.89 1.06 66.5 10 328 155 31 94 4 133 94 68 217 b18 Tholeiitic basalt of hill 1879 PP 40° 37.26' 121° 15.40' 40.6210 -121.2567 LM91-2180 ROC 53.32 17.10 1.69 6.07 7.59 7.25 7.84 3.54 1.46 1.19 0.40 0.14 0.15 100.07 1.05 68.0 38 610 550 13 162 12 100 49 73 210 bsh Basalts and basaltic andesites of Swains Hole PP 40° 37.40' 121° 15.69' 40.6233 -121.2615 LM91-2183 CVF-P 53.05 18.46 1.68 6.03 7.54 5.22 9.08 3.76 1.07 1.08 0.43 0.14 0.01 99.82 1.44 60.7 29 802 518 27 161 11 39 65 87 48 bb7 Unit 7 [Basalts and basaltic andesites of Bogard Buttes] PC 40° 31.71' 121° 06.61' 40.5285 -121.1102 LM91-2197 ROC 58.41 16.92 1.45 5.22 6.53 4.24 6.86 3.65 1.88 0.89 0.35 0.13 <0.01 99.87 1.54 59.1 45 450 760 22 192 10 40 69 60 95 Tmsr Basaltic andesites of Susan River PC 40° 30.37' 121° 07.09' 40.5128 -121.1182 LM91-2233 CVF-C 53.89 20.21 1.49 5.36 6.71 4.99 8.94 3.40 0.82 0.65 0.12 0.12 <0.01 100.05 1.34 62.4 11 690 260 81 24 58 59 57 mee1 Unit 1 [Basaltic andesites of Echo Lake] RC 40° 26.76' 121° 09.37' 40.4460 -121.1562 LM91-2247 CVF-C 55.63 19.21 1.54 5.53 6.91 4.25 7.92 3.82 1.00 0.80 0.19 0.12 <0.01 100.02 1.63 57.8 24 710 375 15 112 26 57 26 mee2 Unit 2 [Basaltic andesites of Echo Lake] RC 40° 25.83' 121° 09.59' 40.4305 -121.1599 LM91-2249 CVF-C 55.51 19.31 1.52 5.47 6.84 4.29 8.03 3.77 1.00 0.80 0.18 0.12 0.26 99.51 1.60 58.3 23 700 380 14 106 10 26 70 mee2 Unit 2 [Basaltic andesites of Echo Lake] RC 40° 25.70' 121° 09.00' 40.4283 -121.1500 LM91-2255 CVF-C 55.59 19.17 1.53 5.50 6.87 4.28 8.00 3.82 0.99 0.81 0.20 0.12 <0.01 99.73 1.61 58.1 20 700 395 15 110 26 63 mee2 Unit 2 [Basaltic andesites of Echo Lake] RC 40° 25.42' 121° 09.32' 40.4237 -121.1553 LM91-2258 CVF-C 55.26 19.43 1.50 5.40 6.75 4.40 8.22 3.74 0.94 0.80 0.19 0.12 <0.01 99.94 1.53 59.2 17 720 360 11 108 24 57 20 mee2 Unit 2 [Basaltic andesites of Echo Lake] RC 40° 25.09' 121° 10.02' 40.4182 -121.1670 LM91-2276 ROC 52.49 19.41 1.68 6.05 7.57 5.53 8.98 3.60 0.85 0.95 0.31 0.14 <0.01 100.11 1.37 62.0 14 580 420 17 134 50 54 67 73 boc Older basalts and basaltic andesites south of Caribou Volcanic Field RC 40° 24.97' 121° 09.10' 40.4162 -121.1517 LM92-2295 CVF-C 52.88 20.24 1.54 5.53 6.92 5.77 9.19 3.22 0.76 0.64 0.11 0.12 <0.01 99.90 1.20 65.0 10 680 250 71 46 53 62 59 beb3 Unit 3 [Basalts of Bond Valley] SM 40° 24.18' 121° 07.47' 40.4030 -121.1245 LM91-2328 CVF-C 53.01 19.78 1.58 5.70 7.13 5.61 8.89 3.43 0.89 0.78 0.18 0.13 <0.01 100.24 1.27 63.7 13 680 305 11 94 40 54 63 53 mc2 Unit 2 [Basaltic andesites of Silver Lake] RC 40° 28.87' 121° 09.92' 40.4811 -121.1653 LM91-2341 CVF-C 53.42 18.68 1.60 5.75 7.19 7.46 8.27 3.18 0.76 0.62 0.12 0.13 <0.01 100.23 0.96 69.8 15 610 260 80 89 36 60 82 mc1 Unit 1 [Basaltic andesites of Silver Lake] RC 40° 27.95' 121° 08.48' 40.4658 -121.1413 LM91-2342 CVF-C 54.01 19.61 1.52 5.47 6.84 5.36 8.85 3.38 0.90 0.65 0.12 0.12 <0.01 100.03 1.28 63.6 17 670 295 11 77 34 57 60 64 mcm Basaltic andesite of middle Caribou RC 40° 28.05' 121° 09.63' 40.4674 -121.1605 LM91-2346 ROC 52.65 17.99 1.74 6.26 7.83 6.69 8.58 3.49 1.02 1.06 0.37 0.14 0.13 99.64 1.17 65.6 26 562 529 29 150 12 114 57 73 174 boc Older basalts and basaltic andesites south of Caribou Volcanic Field CH 40° 21.19' 121° 07.72' 40.3532 -121.1287 LM91-2350 ROC 48.84 19.70 1.31 6.67 7.84 7.97 11.56 2.72 0.21 0.76 0.12 0.15 0.24 100.25 0.98 68.1 265 89 19 70 108 104 38 150 brk Tholeiitic basalt of Rock Creek CH 40° 20.82' 121° 08.68' 40.3470 -121.1447 LM91-2367 ROC 56.48 17.51 1.53 5.50 6.88 5.02 7.62 3.63 1.40 0.86 0.31 0.13 0.21 99.40 1.37 61.9 37 495 630 20 136 60 55 58 82 Tbm Basalts and basaltic andesites of Mud Creek Rim CH 40° 20.09' 121° 10.62' 40.3348 -121.1770 LM91-2379 ROC 53.08 18.20 1.66 5.99 7.49 6.15 8.50 3.63 1.19 1.09 0.37 0.14 <0.01 100.14 1.22 64.7 26 570 540 21 134 84 47 56 158 Tbm Basalts and basaltic andesites of Mud Creek Rim RC 40° 22.97' 121° 13.07' 40.3828 -121.2178 LM91-2387 ROC 51.61 17.74 1.83 6.58 8.23 7.46 8.76 3.30 1.09 1.16 0.32 0.15 0.01 99.93 1.10 66.9 23 489 442 28 138 12 130 55 82 201 Tbm Basalts and basaltic andesites of Mud Creek Rim CH 40° 21.39' 121° 13.99' 40.3565 -121.2332 LM91-2392 ROC 52.25 18.35 1.81 6.50 8.12 6.64 8.54 3.50 0.91 1.03 0.32 0.15 <0.01 100.44 1.22 64.5 520 480 17 132 88 70 67 126 boc Older basalts and basaltic andesites south of Caribou Volcanic Field RC 40° 23.82' 121° 10.41' 40.3970 -121.1735 LM92-2399 RSE 50.92 16.37 1.90 6.83 8.53 9.10 9.28 3.10 0.91 1.12 0.31 0.15 0.01 100.32 0.94 70.4 18 437 349 26 121 8 164 69 84 454 bcc Basalts of Cold Creek Butte LY 40° 21.38' 121° 44.03' 40.3563 -121.7338 LM92-2422B RSE 56.06 17.00 1.52 5.47 6.84 6.32 7.36 3.65 1.28 0.94 0.26 0.13 0.13 99.42 1.08 67.3 33 524 549 26 140 10 111 54 73 221 mgp Basaltic andesite of Grays Peak GP 40° 22.74' 121° 39.55' 40.3790 -121.6592 LM92-2423 MVC 58.17 16.68 1.41 5.07 6.34 5.50 7.64 3.42 1.09 0.73 0.16 0.12 0.15 98.88 1.15 65.9 32 374 378 36 126 7 65 38 59 133 Tah Andesites of Hampton Butte LY 40° 22.05' 121° 41.42' 40.3675 -121.6903 LM92-2431 MVC 63.79 16.43 0.93 3.37 4.21 3.35 6.24 3.89 1.27 0.52 0.14 0.08 0.44 98.98 1.26 63.9 23 850 323 25 130 5 27 50 51 31 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" LY 40° 21.49' 121° 39.35' 40.3582 -121.6558 LM92-2434 MVC 64.02 16.44 0.91 3.29 4.11 3.22 6.19 3.95 1.26 0.52 0.15 0.07 0.61 98.93 1.28 63.6 26 871 326 20 124 2 29 27 45 27 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" LY 40° 21.62' 121° 38.37' 40.3603 -121.6395 LM92-2438 RSE 52.73 16.03 1.66 5.99 7.49 9.68 9.53 2.64 0.73 0.73 0.15 0.14 0.09 99.85 0.77 74.2 15 441 240 23 91 3 166 68 72 444 bpa Basalt of Panther Creek LY 40° 21.59' 121° 42.71' 40.3598 -121.7118 LM92-2440 RSE 52.39 17.26 1.73 6.24 7.80 7.59 8.59 3.42 1.15 1.12 0.35 0.14 0.01 100.33 1.03 68.4 31 483 453 28 153 10 154 60 73 198 bcc Basalts of Cold Creek Butte LY 40° 21.26' 121° 41.54' 40.3543 -121.6923 LM92-2443 RSE 51.60 16.16 1.84 6.61 8.26 9.34 9.21 2.95 0.86 1.00 0.29 0.15 0.07 99.76 0.88 71.6 18 410 340 22 118 8 183 61 75 493 bcc Basalts of Cold Creek Butte LY 40° 20.71' 121° 38.64' 40.3452 -121.6440 LM92-2450 MVC 52.90 16.15 1.68 6.05 7.56 9.43 9.43 2.66 0.66 0.75 0.15 0.15 0.33 99.72 0.80 73.5 17 432 271 33 92 3 159 76 67 464 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" LY 40° 20.34' 121° 42.55' 40.3390 -121.7092 LM92-2471 MVC 63.69 16.38 1.14 4.09 5.12 2.96 5.34 3.72 1.78 0.64 0.16 0.09 0.79 98.74 1.73 56.3 45 367 572 27 159 4 13 19 50 39 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" LY 40° 19.61' 121° 44.88' 40.3268 -121.7480 LM92-2487 MVC 54.81 15.85 1.61 5.78 7.22 8.27 8.94 2.89 0.85 0.71 0.16 0.14 0.39 99.70 0.87 71.8 13 469 252 23 92 3 110 71 76 330 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" outcrop mostly buried by debris flow deposits LY 40° 17.77' 121° 43.23' 40.2962 -121.7204 LM92-2490 MVC 63.55 16.04 1.03 3.69 4.61 3.33 5.53 3.84 2.00 0.67 0.23 0.09 0.81 98.91 1.39 61.7 55 706 651 26 191 4 51 27 57 72 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" LY 40° 19.05' 121° 42.58' 40.3175 -121.7097 LM92-2524 MVC 65.81 16.02 0.85 3.04 3.81 2.84 5.28 3.82 1.55 0.57 0.14 0.07 0.76 98.95 1.34 62.4 38 861 360 22 153 4 39 43 50 62 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" LY 40° 17.60' 121° 41.49' 40.2933 -121.6915 LM92-2544 MVC 57.65 17.26 1.27 4.57 5.71 5.49 7.84 3.50 1.23 0.86 0.22 0.11 0.46 99.02 1.04 68.2 22 842 273 26 132 3 66 31 61 147 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" LY 40° 16.53' 121° 41.18' 40.2755 -121.6863 LM92-2564 MVC 56.69 18.11 1.55 5.56 6.95 4.53 8.16 3.13 1.04 0.87 0.21 0.13 1.27 98.32 1.53 59.2 22 967 292 26 127 3 24 77 70 44 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" LY 40° 15.94' 121° 37.84' 40.2657 -121.6307 LM92-2644 MVC 64.56 16.22 0.98 3.54 4.42 2.71 5.28 3.76 2.09 0.61 0.15 0.09 0.89 98.44 1.63 57.7 55 567 560 25 170 5 28 44 51 56 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" OB 40° 14.78' 121° 37.47' 40.2463 -121.6245 LM92-2661 MVC 63.34 17.40 1.06 3.81 4.76 1.95 5.22 4.35 1.96 0.59 0.20 0.11 0.98 98.14 2.44 47.8 38 490 467 24 145 5 5 29 68 5 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" MN 40° 15.28' 121° 34.90' 40.2547 -121.5817 LM92-2674 MVC 75.88 12.91 0.28 1.01 1.26 0.31 1.09 3.43 4.74 0.27 0.05 0.03 2.11 96.96 4.08 35.3 151 126 1067 21 150 9 3 17 28 4 rmp Rhyolite of Mill Creek Plateau MN 40° 16.83' 121° 31.39' 40.2805 -121.5232 LM92-2693 MVC 62.36 17.18 1.22 4.39 5.48 2.66 5.45 3.81 1.94 0.72 0.17 0.10 1.04 98.29 2.06 51.9 57 337 590 32 156 7 15 33 62 32 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" OB 40° 14.62' 121° 31.14' 40.2437 -121.5189 LM92-2701 MVC 61.72 17.66 1.03 3.71 4.64 3.47 6.49 3.91 1.23 0.53 0.15 0.09 0.61 98.91 1.34 62.5 31 644 419 23 120 1 43 39 59 87 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" MN 40° 16.90' 121° 33.27' 40.2817 -121.5545 LM92-2744 ROC 53.18 17.73 1.69 6.08 7.59 6.29 7.92 3.73 1.53 1.23 0.49 0.14 0.13 99.38 1.21 64.9 30 787 798 30 189 11 105 55 72 176 msw Basaltic andesites of Swain Mountain SM 40° 26.74' 121° 04.84' 40.4457 -121.0807 LM92-2746 ROC 56.29 17.89 1.55 5.59 6.99 4.42 7.73 3.71 1.43 0.93 0.31 0.13 <0.01 100.10 1.58 58.5 37 544 643 27 158 7 40 65 59 66 msw Basaltic andesites of Swain Mountain SM 40° 25.45' 121° 06.08' 40.4242 -121.1013 LM92-2789 RNW 53.34 17.51 1.68 6.04 7.55 6.76 7.88 3.67 1.37 1.15 0.45 0.14 0.18 100.03 1.12 66.6 26 569 528 27 174 11 120 49 74 226 ap Andesite and basaltic andesite of Prospect Peak SW 40° 38.19' 121° 17.72' 40.6365 -121.2953 LM92-2802 ROC 58.16 17.84 1.36 4.91 6.14 4.23 7.21 3.54 1.65 0.74 0.23 0.12 0.15 99.75 1.45 60.6 42 557 696 26 149 7 49 69 57 72 Tac Andesite of Cal Mountain PL 40° 39.15' 121° 10.52' 40.6525 -121.1753 LM92-2803 ROC 59.12 17.75 1.32 4.77 5.96 3.83 6.85 3.52 1.77 0.72 0.23 0.11 0.70 99.13 1.55 58.9 55 506 733 26 146 7 59 46 68 80 Tac Andesite of Cal Mountain PL 40° 39.95' 121° 08.56' 40.6658 -121.1427 LM92-2804 ROC 56.14 17.98 1.50 5.41 6.76 5.22 7.79 3.45 1.36 0.77 0.24 0.13 0.12 100.17 1.29 63.2 38 562 554 30 135 10 63 62 66 123 Tmc Basaltic andesite of Cone Mountain HM 40° 40.32' 121° 07.47' 40.6721 -121.1245 LM92-2821 RNW 49.97 18.12 1.40 7.15 8.42 8.26 10.41 2.93 0.42 0.99 0.18 0.15 <0.01 100.66 1.02 67.3 16 416 183 27 97 5 111 111 57 184 b44 Tholeiitic basalt of Calif. Hwy 44 SW 40° 39.29' 121° 19.25' 40.6548 -121.3208 LM92-2823 RNW 62.02 17.02 1.11 3.98 4.98 3.29 5.97 3.58 2.12 0.66 0.16 0.09 0.99 99.12 1.51 59.6 48 458 664 26 179 4 32 43 49 50 ahc "Andesites, basaltic andesites, and basalts of Hat Creek Rim" OS 40° 38.76' 121° 23.00' 40.6460 -121.3833 LM92-2826 RNW 60.20 17.03 1.24 4.46 5.57 3.88 6.20 3.74 2.07 0.79 0.28 0.11 <0.01 100.32 1.44 60.8 55 487 828 28 194 14 47 48 65 79 ahc "Andesites, basaltic andesites, and basalts of Hat Creek Rim" OS 40° 38.70' 121° 22.96' 40.6450 -121.3827 LM92-2827 RNW 62.62 16.89 1.09 3.92 4.90 3.10 5.74 3.73 2.01 0.65 0.16 0.09 0.33 99.28 1.58 58.5 58 445 644 26 173 3 34 51 55 41 ahc "Andesites, basaltic andesites, and basalts of Hat Creek Rim" OS 40° 38.83' 121° 23.12' 40.6472 -121.3853 LM92-2828 RNW 63.24 15.89 1.13 4.07 5.08 3.16 5.35 3.52 2.61 0.75 0.19 0.09 1.01 99.27 1.61 58.1 74 341 735 28 211 9 39 63 55 73 ahc "Andesites, basaltic andesites, and basalts of Hat Creek Rim" OS 40° 38.99' 121° 23.25' 40.6498 -121.3875 LM93-2854 MVC 64.63 16.49 1.03 3.70 4.63 2.46 4.78 3.74 2.29 0.61 0.17 0.09 0.94 98.04 1.88 54.2 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" LY 40° 15.77' 121° 40.98' 40.2628 -121.6830 LM93-2959 MVC 54.84 19.06 1.55 5.57 6.96 5.19 8.14 3.65 0.93 0.74 0.20 0.12 0.40 98.71 1.34 62.4 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" HP 40° 14.53' 121° 28.42' 40.2422 -121.4737 LM93-2982 MVC 55.59 17.65 1.56 5.62 7.02 5.60 8.52 3.30 1.04 0.77 0.22 0.13 0.39 98.65 1.25 64.0 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" HP 40° 13.43' 121° 29.65' 40.2239 -121.4942 LM93-2990 MVC 57.86 16.81 1.54 5.54 6.93 4.96 7.03 3.82 1.25 0.84 0.23 0.11 0.59 98.77 1.40 61.5 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" OB 40° 13.70' 121° 30.38' 40.2283 -121.5063 LM93-2993 MVC 54.35 17.37 1.81 6.52 8.15 5.42 9.27 3.19 0.86 0.87 0.17 0.15 <0.01 99.15 1.50 59.7 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" OB 40° 13.42' 121° 30.35' 40.2237 -121.5058 LM93-3033 MVC 63.56 17.52 0.90 3.23 4.03 2.40 6.14 3.85 1.50 0.60 0.22 0.08 0.85 98.53 1.68 57.0 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" CM 40° 15.62' 121° 27.10' 40.2603 -121.4517 LM93-3068 MVC 58.72 15.73 1.37 4.92 6.15 6.25 7.16 3.14 1.70 0.74 0.17 0.11 0.54 98.45 0.98 69.4 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" OB 40° 10.68' 121° 36.43' 40.1780 -121.6072 LM93-3087 MVC 59.00 16.11 1.38 4.98 6.22 5.78 6.87 3.11 1.74 0.75 0.17 0.10 1.24 97.99 1.08 67.4 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" BK 40° 11.77' 121° 37.88' 40.1962 -121.6313 LM93-3093 MVC 58.95 16.21 1.40 5.04 6.30 5.72 6.85 3.00 1.79 0.76 0.18 0.10 1.43 97.40 1.10 66.9 Tdm "Dacites of Maidu Volcanic Center, Stage 2, undivided" OB 40° 12.72' 121° 36.17' 40.2120 -121.6028 LM94-3271 MVC 59.91 17.19 1.27 4.58 5.72 4.15 7.21 3.29 1.50 0.65 0.17 0.09 0.60 98.82 1.38 61.8 Tam "Andesites of Maidu Volcanic Center, Stage 1, undivided" MN 40° 15.97' 121° 32.58' 40.2662 -121.5430 LM98-3922 ROC 48.62 18.05 1.55 7.91 9.30 8.64 11.23 2.50 0.21 1.00 0.12 0.17 0.14 99.57 1.08 66.1 bgv Tholeiitic basalt of Grays Valley PC 40° 35.30' 121° 04.89' 40.5883 -121.0815 LM98-3941 ROC 48.40 18.04 1.53 7.78 9.15 9.02 11.33 2.50 0.16 0.95 0.12 0.17 -0.31 100.01 1.01 67.4 bgv Tholeiitic basalt of Grays Valley HM 40° 37.91' 121° 06.44' 40.6318 -121.1073 LM02-3988 CVF-S 53.05 17.79 1.70 6.11 7.64 6.54 8.76 3.31 1.24 1.03 0.32 0.14 0.04 99.63 1.17 65.6 bsl Basalt of Lost Spring PP 40° 34.27' 121° 15.97' 40.5711 -121.2662 LM03-3992 ROC 52.62 18.21 1.69 6.07 7.59 7.00 8.82 3.27 0.94 0.93 0.30 0.14 0.31 99.49 1.08 67.3 bsh Basalts and basaltic andesites of Swains Hole SW 40° 40.38' 121° 15.68' 40.6730 -121.2613 LM03-3999C CVF-P 52.77 17.32 1.60 5.75 7.19 7.66 9.81 2.90 0.87 0.91 0.26 0.14 0.44 99.36 0.94 70.3 bp1 Unit 1 [Basalts of Poison Butte] PL 40° 40.24' 121° 12.93' 40.6707 -121.2155