Appendix 1. Descriptions and whole-rock compositions of Mount Gareloi rock samples. "[All analyses performed at the GeoAnalaytical Lab, Washington State University. Sample number abbreviated (excludes ""03GR"" prefix) where noted in text and on map. UTM values in North American Datum 1983, Zone 1 North projection. Abbreviations: bt, biotite; cpx, clinopyroxene; ol, olivine; opx, orthopyroxene; pheno, phenocryst; pl, plagioclase; px, pyroxene; xtl, crystal]" "Major-element oxides, in weight percent, by XRF" "Trace elements, in ppm, by XRF" "Trace elements, in ppm, by ICP-MS" Sample No. Unit label UTM East UTM North Sample type Field description Thin-section description SiO2 TiO2 Al2O3 FeO MnO MgO CaO Na2O K2O P2O5 Ni Cr Sc V Ba Rb Sr Zr Y Nb Ga Cu Zn Pb La Ce Th Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Ba Th Nb Y Hf Ta U Pb Rb Cs Sr Sc Zr 03GRMC04 l29 377868 5735810 Lava Agglutinate/lava from east rim of crater 5 (double explosion crater) "Crystal-poor, pl-cpx, no or few ol" 58.15 0.88 17.88 6.80 0.16 2.20 5.34 4.93 3.25 0.41 7.4 7.0 15.3 140.7 1124.2 91.0 503.9 218.9 26.9 4.7 22.6 73.8 88.6 19.2 25.8 53.0 7.7 47.70 6.12 26.59 6.58 1.69 5.63 0.88 5.18 1.06 2.96 0.44 2.91 0.45 1143.19 8.25 5.84 28.82 6.14 0.40 3.47 18.06 95.17 6.30 531.76 15.80 222.85 03GRMC05 l29 378437 5735343 Lava Two-m block on east rim of crater 2 "Pl-cpx vesicular, clots (pl-px-ol)" 58.68 0.86 17.68 6.51 0.16 2.19 5.16 4.98 3.38 0.39 5.0 5.2 13.6 132.1 1142.2 96.5 477.4 229.2 26.6 5.0 21.1 67.8 89.2 25.2 26.4 50.1 8.3 46.80 6.00 25.99 6.37 1.65 5.61 0.86 5.09 1.05 2.91 0.44 2.87 0.45 1127.33 8.49 6.09 28.74 6.25 0.40 3.60 21.70 96.65 6.40 487.07 16.07 228.61 03GRMC16 l29 378339 5735475 Lava In situ lava from east rim of crater 3; crystal clots to 1 cm "Pl-cpx andesite(?); mystery high-relief, elongate, low-bt mineral intergrown with pl. Evidence for mixing especially in groundmass" 58.09 0.86 17.79 6.68 0.17 2.37 5.42 4.95 3.30 0.39 6.4 8.5 14.3 134.4 1113.7 93.4 500.7 226.2 27.8 4.7 20.4 75.0 90.0 15.2 24.9 39.5 7.4 46.60 5.97 25.61 6.26 1.62 5.47 0.82 5.03 1.03 2.84 0.43 2.73 0.44 1092.46 8.38 5.77 28.20 5.98 0.39 3.60 15.17 92.19 6.09 494.55 15.93 217.90 03GRMC17 l29 378310 5735570 Lava Lava from south top of peanut flow; crystal clots to 3 mm Pl-cpx-ol andesite (scarce ol) cpx with beautiful melt inclusions 57.92 0.87 17.87 6.83 0.16 2.27 5.48 4.94 3.25 0.41 5.9 6.0 14.9 138.8 1123.2 91.1 508.2 220.4 26.5 4.9 22.2 74.1 91.6 16.8 18.2 45.6 8.3 45.52 5.83 25.10 6.06 1.59 5.43 0.85 4.95 0.99 2.81 0.42 2.69 0.43 1097.49 8.38 5.73 27.72 5.90 0.38 3.54 15.94 90.53 6.07 508.31 16.14 215.89 03GRMC20 l29 378660 5735809 Lava Front of peanut flow "Pl-cpx-ol andesite, xtl poor" 57.79 0.88 17.93 6.83 0.16 2.33 5.53 4.92 3.24 0.41 3.6 7.4 14.1 142.5 1126.8 90.2 518.5 219.9 27.4 4.4 21.1 44.4 88.2 14.8 25.9 53.3 7.6 46.49 5.96 25.90 6.19 1.63 5.53 0.84 4.98 1.03 2.83 0.42 2.69 0.43 1092.91 8.31 5.64 28.13 5.95 0.37 3.55 14.64 88.70 5.72 513.95 15.88 212.80 03GRMC21 l29 378600 5734980 Lava Top of crater 1 flow; some crystal clots Pl-cpx-ol andesite (scarce ol) cpx with some usable melt inclusions 58.27 0.86 17.74 6.65 0.17 2.29 5.34 4.96 3.32 0.41 4.6 6.8 14.5 132.0 1123.3 94.2 493.8 226.8 27.0 4.5 20.5 64.2 91.3 15.0 27.6 50.3 8.2 47.35 6.06 26.17 6.44 1.58 5.47 0.86 5.09 1.04 2.93 0.43 2.81 0.45 1116.56 8.77 5.98 28.78 6.06 0.39 3.76 15.43 94.43 6.33 497.73 16.15 224.25 03GRBB09 l29 377512 5736100 Lava Lava flow from crater 8 that spills into crater 7 Crystal-poor pl-cpx-ol 58.01 0.87 18.02 6.67 0.17 2.30 5.45 4.87 3.26 0.40 3.7 4.6 13.8 137.8 1134.3 91.5 509.4 220.7 26.9 5.3 21.1 64.8 89.4 13.8 18.2 49.9 7.1 46.73 6.00 25.90 6.29 1.61 5.39 0.83 4.92 1.01 2.85 0.42 2.69 0.44 1108.39 8.30 5.57 27.38 5.81 0.38 3.53 15.03 91.95 6.15 507.85 15.75 212.13 03GRGM16A l29 378884 5735058 Lava "Crater 1, 5-6-m-thick lava flow that descends a stream and forms delta into sea" "Pl-cpx-ol, few phenos" 58.17 0.86 17.83 6.57 0.16 2.26 5.38 5.05 3.34 0.39 6.1 3.2 14.8 127.9 1135.4 89.2 498.3 225.7 27.5 5.0 21.2 27.4 81.6 15.3 16.4 51.2 8.3 46.64 6.01 26.01 6.25 1.64 5.48 0.86 5.08 1.03 2.89 0.43 2.81 0.45 1110.82 8.83 5.83 28.27 6.13 0.39 3.82 14.37 85.89 2.52 489.99 15.73 221.32 03GRBB16A p29 376477 5735743 Scoria bomb Scoria bomb in upper 40 cm of strat section "Pl-cpx-ol, clots with interstitial glass" 58.68 0.85 17.89 6.49 0.16 2.10 4.99 5.08 3.37 0.39 4.3 6.7 13.6 120.3 1148.3 96.0 497.4 230.5 27.2 4.9 21.9 58.7 91.8 17.2 24.7 43.1 7.2 48.43 6.15 26.53 6.32 1.63 5.29 0.83 5.04 1.04 2.89 0.43 2.79 0.46 1147.73 8.76 5.90 28.56 6.10 0.41 3.76 15.68 97.49 6.51 503.74 14.73 226.06 03GRBB16G p29 376477 5735743 Pumice Bulk sample of pumice clasts from pink/oxidized fall at base of section "Pl-cpx-ol, very pale glass, one enclave like clot (microphenocrysts of pl and cpx)" 60.06 0.81 17.83 5.94 0.16 1.81 4.34 5.14 3.56 0.35 4.7 8.3 13.5 94.0 1154.8 102.8 453.3 249.4 29.7 6.0 21.6 46.2 91.3 17.0 25.6 58.7 9.2 49.25 6.25 26.58 6.32 1.59 5.51 0.85 5.09 1.06 2.94 0.45 2.94 0.48 1150.74 9.22 6.31 29.01 6.50 0.41 3.94 17.08 103.82 6.93 450.71 13.81 240.74 03GRGM05 p29 377239 5736335 Dense bomb 1-m-long glassy bomb on surface of 1929 crater 9 "Pl-cpx-ol, few phenos, some small clots" 60.65 0.79 17.70 5.55 0.16 1.53 4.01 5.47 3.80 0.35 2.7 5.0 11.1 69.9 1219.0 110.5 437.1 260.0 29.4 5.5 19.2 28.4 90.1 15.7 21.3 52.8 8.8 50.75 6.43 27.03 6.56 1.61 5.54 0.87 5.31 1.09 3.09 0.47 3.06 0.50 1191.93 9.82 6.68 30.51 6.87 0.44 4.25 17.24 106.62 7.23 428.30 11.38 253.81 03GRGM06 p29 377512 5736100 Scoria bomb Pumice/scoria fall on top of lava flow that flows into crater 7 from crater 8 "Pl-cpx-ol, few phenos" 58.34 0.88 17.89 6.76 0.16 2.20 5.31 4.79 3.28 0.38 3.6 2.9 14.6 141.5 1124.4 93.4 506.3 224.6 26.7 4.9 21.5 55.9 89.6 20.2 25.0 46.3 7.5 45.48 5.82 24.95 5.97 1.61 5.21 0.81 4.89 1.00 2.78 0.42 2.70 0.44 1103.87 8.45 5.78 27.75 6.03 0.38 3.59 21.20 90.88 6.19 498.91 15.82 218.79 03GRGM03 p29 375704 5738490 Lava Grab samples of altered rock from headwall of south crater collected along edge of 1950-80 flow 57.85 0.87 17.90 6.82 0.17 2.25 5.47 4.97 3.28 0.41 2.8 3.2 13.8 139.1 1135.3 91.8 517.6 221.4 27.2 4.8 22.6 55.7 90.6 15.7 21.0 49.8 7.8 47.41 6.08 26.18 6.38 1.68 5.48 0.85 5.12 1.02 2.90 0.43 2.74 0.45 1120.04 8.39 5.81 28.86 5.99 0.38 3.58 16.55 91.79 6.07 521.66 14.74 220.43 03GRBB05 t29 377031 5736822 Lava Lava flow in wall of crater 10 "Pl-cpx-ol, sparsely porphyritic, clots common, brown vesicular groundmass. " 60.92 0.79 17.78 5.49 0.15 1.43 3.86 5.36 3.81 0.40 3.9 6.3 10.8 65.3 1225.3 111.2 429.4 264.1 29.5 5.8 22.9 27.3 90.8 21.3 28.2 55.5 9.1 50.51 6.31 27.03 6.35 1.64 5.58 0.87 5.27 1.11 3.09 0.47 3.10 0.51 1214.42 10.70 6.91 30.38 7.16 0.46 4.50 22.34 109.32 7.48 431.44 11.66 265.32 03GRBB06 t29 377332 5736566 Lava Lava flow from crater 10(?) "Pl-cpx-ol, scarce phenos, glassy gmass, one amphibole crystal" 60.53 0.79 17.67 5.57 0.16 1.63 4.11 5.41 3.76 0.35 5.6 8.2 11.1 73.9 1190.1 107.0 426.6 253.3 28.4 5.2 20.0 26.8 91.6 17.1 23.2 51.2 8.7 48.71 6.13 26.64 6.47 1.64 5.64 0.89 5.30 1.09 3.02 0.46 3.01 0.49 1180.07 10.39 6.65 29.48 6.93 0.45 4.41 18.16 104.48 7.15 428.84 12.70 254.91 03GRBB07 t29 377243 5736356 Lava Lava on southeast flank of crater 9 "Pl-cpx-minor ol, relatively few phenos, glassy groundmass, small clots common" 60.57 0.79 17.70 5.62 0.16 1.61 4.05 5.39 3.76 0.35 4.2 6.1 10.8 74.1 1205.5 108.6 430.1 256.6 29.2 5.0 20.0 33.4 92.4 17.6 25.9 61.2 8.9 54.15 6.84 29.04 6.91 1.70 5.95 0.91 5.53 1.13 3.19 0.50 3.16 0.51 1265.42 10.09 6.86 31.31 7.11 0.45 4.30 17.66 113.97 7.76 449.98 12.26 260.72 03GRBB08 t29 377429 5736582 Lava Lava on top of 'spire' near crater 9 "Pl-cpx-minor ol, relatively few phenos, glassy groundmass, small clots common" 60.96 0.78 17.71 5.49 0.16 1.50 3.90 5.36 3.81 0.34 4.0 7.0 10.0 65.6 1215.8 110.2 421.0 260.8 29.0 5.8 21.0 27.7 89.5 19.1 25.3 56.4 9.5 50.95 6.46 27.35 6.54 1.64 5.50 0.87 5.27 1.09 3.08 0.47 3.04 0.50 1248.27 10.07 6.83 29.88 7.02 0.48 4.32 17.76 114.00 7.67 433.45 12.08 261.01 03GRMC07 ssp 375971 5735899 Lava Flow front of 1950-1980 lava at west edge of 1929 debris flow "Coarsely sieved pl, cpx, ol andesite. Pl by far most abundant. Felty groundmass" 53.40 0.89 19.77 7.69 0.16 2.92 8.45 4.03 2.29 0.41 7.0 2.5 18.5 216.2 917.5 61.5 678.6 151.7 22.0 2.9 22.9 166.7 79.9 11.0 19.4 39.9 5.3 37.44 4.88 22.01 5.51 1.54 4.84 0.73 4.35 0.88 2.33 0.35 2.22 0.34 901.05 5.48 3.92 23.46 4.12 0.25 2.36 10.29 63.08 4.12 706.24 19.44 147.99 03GRBB03 ssp 376134 5737887 Lava 1950-1980 lava flow "Coarsely sieved pl, cpx, ol andesite. Pl by far most abundant. Some flow banding" 53.45 0.90 19.67 7.74 0.16 2.86 8.40 4.07 2.33 0.42 6.0 2.9 18.0 221.1 923.0 62.9 687.7 155.5 22.2 2.9 20.4 136.3 81.2 11.5 18.9 38.4 6.2 36.73 4.80 21.63 5.46 1.54 4.83 0.72 4.19 0.86 2.35 0.34 2.11 0.34 892.93 5.67 3.87 23.09 4.16 0.26 2.44 10.79 61.78 4.06 688.50 19.07 148.63 03GRBB04 ssp 376470 5737458 Lava 1950-1980 lava flow "Coarsely sieved pl, cpx, ol andesite. Pl by far most abundant. Some flow banding" 53.52 0.90 19.64 7.74 0.16 2.87 8.34 4.07 2.35 0.42 5.0 5.6 18.6 215.9 921.9 64.6 687.9 158.4 21.6 3.8 20.5 142.1 82.9 12.6 22.8 43.0 5.5 37.65 4.96 22.06 5.58 1.55 4.91 0.74 4.37 0.89 2.38 0.35 2.19 0.35 916.07 5.86 3.97 23.51 4.29 0.26 2.52 11.17 63.10 4.18 695.66 19.00 152.30 03GRBB17 ssp 376481 5735732 Lava 1950-1980 lava flow "Pl-cpx-ol, pl shows less sieve texture than other 50-80 lavas" 53.44 0.91 19.56 7.80 0.16 2.93 8.37 4.07 2.35 0.42 6.6 7.4 16.9 221.0 938.0 63.6 682.7 158.4 22.5 3.1 22.5 175.6 83.0 10.9 24.5 41.0 5.2 37.24 4.89 21.81 5.42 1.51 4.75 0.71 4.21 0.85 2.34 0.34 2.10 0.34 900.37 5.51 3.86 22.92 4.08 0.26 2.41 10.54 63.22 4.13 679.49 19.79 145.84 03GRBB02 asp 376204 5738124 Lava Lava flow exposed in the eastern crater wall of south peak Pl-2-px andesite 62.43 0.47 17.44 4.79 0.12 2.45 6.40 4.34 1.39 0.19 13.0 24.9 12.5 110.4 564.9 30.6 614.0 105.4 14.7 1.9 19.8 68.8 56.9 10.7 14.4 31.3 2.5 21.29 2.69 11.57 2.88 0.90 2.52 0.39 2.37 0.49 1.39 0.20 1.33 0.22 544.26 2.36 2.76 13.54 2.68 0.21 1.03 9.54 29.15 2.52 606.17 14.10 94.89 03GRGM01 asp 375788 5738358 Lava Highest lava flow exposed on rim of south crater Fine-grained pl-2-px andesite 61.69 0.52 17.45 5.16 0.12 2.57 6.58 4.32 1.40 0.18 13.1 22.3 15.6 128.4 567.6 30.1 608.6 103.1 13.9 2.0 18.7 67.6 58.5 9.8 14.4 24.5 3.9 19.27 2.44 10.59 2.66 0.90 2.41 0.38 2.30 0.47 1.33 0.20 1.34 0.22 551.46 2.26 2.73 13.19 2.65 0.20 0.96 7.95 28.62 1.42 607.42 14.60 94.30 03GRGM02 asp 375860 5738398 Lava Piece of massive lava flow from a 2-m-long block on rim of south crater Pl-2 px andesite 62.61 0.46 17.47 4.69 0.12 2.33 6.32 4.44 1.39 0.19 11.9 24.2 13.2 106.0 569.3 30.0 619.8 101.8 14.0 1.6 18.7 62.3 52.7 9.0 10.5 24.9 3.6 20.95 2.62 11.29 2.69 0.88 2.45 0.38 2.27 0.46 1.29 0.20 1.29 0.22 550.68 2.17 2.65 13.27 2.55 0.19 0.95 9.29 27.66 2.48 603.16 12.77 91.07 03GRGM04 asp 377210 5736317 Lava 2-3-m-thick lava flow that floors the main scarp of south crater (under the 1929 and 1950-1980 flows) Pl-2 px andesite 62.67 0.45 17.52 4.63 0.11 2.33 6.32 4.39 1.39 0.18 11.7 23.4 12.9 105.4 560.4 31.0 612.1 101.6 13.4 1.7 16.3 79.9 54.9 11.1 11.1 30.3 2.8 21.49 2.71 11.53 2.77 0.88 2.48 0.39 2.42 0.48 1.37 0.21 1.32 0.22 553.60 2.27 2.77 13.69 2.63 0.21 0.99 9.42 29.15 2.59 613.26 13.03 94.80 03GRBB45 asp 374056 5738450 Lava Young lava on west flank "Pl-2 px andesite. Fine-grained groundmass, looks silicic. No ol. Fine-grained phenos. Not a lot of disequilibrium evidence" 62.15 0.48 17.58 4.79 0.12 2.50 6.50 4.32 1.38 0.19 14.4 25.9 13.2 115.3 557.0 31.6 629.7 107.9 14.5 1.8 16.6 70.9 56.9 11.1 13.8 30.4 3.7 21.68 2.74 11.92 2.92 0.92 2.54 0.40 2.44 0.51 1.37 0.21 1.39 0.23 540.69 2.50 2.91 13.82 2.69 0.21 1.09 9.50 30.64 2.62 632.44 14.27 98.15 03GRBB49 asp 373889 5738364 Lava Young lava on west flank "Pl-2 px andesite. Fine-grained gmass, looks silicic. No ol. Fine-grained phenos. Not a lot of disequilibrium evidence" 62.10 0.48 17.59 4.78 0.12 2.53 6.55 4.31 1.37 0.19 13.8 26.3 13.7 113.7 560.3 31.8 632.7 107.6 13.3 2.0 19.6 65.4 58.2 8.5 8.9 26.6 2.8 22.29 2.83 12.30 3.04 0.94 2.73 0.41 2.43 0.49 1.39 0.21 1.37 0.23 550.61 2.35 2.83 13.86 2.68 0.21 1.05 9.03 30.61 2.68 627.57 13.51 96.22 03GRMC11 lsp 374368 5735733 Lava "Lava from valley bottom south-southeast of south peak, just before outlet to sea cliff" Pl-cpx-ol basaltic andesite. Seriate. Pl show variety of textures 52.36 0.92 18.03 8.61 0.17 4.84 9.37 3.54 1.84 0.33 16.1 19.1 28.0 270.1 702.5 45.8 637.9 132.8 21.7 3.0 19.9 172.7 81.1 9.2 16.7 31.1 3.4 32.06 4.35 19.49 5.05 1.42 4.56 0.71 4.20 0.85 2.34 0.33 2.14 0.33 680.39 4.23 3.19 22.94 3.55 0.21 1.79 8.56 45.36 2.82 652.05 31.04 125.32 03GRMC36 lsp 374080 5737422 Lava Young valley-bottom lava on northwest flank "Pl-ol-cpx basaltic andesite, seriate texture" 52.26 0.92 18.36 8.57 0.17 4.69 9.52 3.46 1.70 0.34 13.6 11.5 28.3 282.3 634.5 43.6 688.4 126.2 20.0 2.1 19.4 138.8 84.0 5.6 13.0 36.0 3.8 30.31 4.07 18.77 4.87 1.44 4.37 0.67 4.02 0.81 2.22 0.32 1.98 0.32 617.59 3.84 2.84 21.91 3.42 0.18 1.63 6.86 42.54 2.56 699.54 30.38 118.46 03GRBB21 lsp 375087 5735900 Lava Lava on south flank "Pl-ol-cpx basaltic andesite, seriate texture" 52.47 0.92 18.18 8.52 0.17 4.65 9.33 3.58 1.84 0.33 15.2 18.0 27.7 266.4 706.8 43.3 659.0 136.1 22.0 2.5 20.2 133.2 76.9 6.7 20.9 43.4 4.5 31.65 4.24 19.31 4.90 1.38 4.44 0.67 4.06 0.83 2.24 0.33 2.06 0.33 675.47 4.23 3.11 22.05 3.50 0.21 1.82 5.35 42.92 0.77 650.44 30.93 123.20 03GRBB55B lsp 372464 5738101 Lava Older lava flow in contact with flows on west flank Pl-cpx VERY pheno-poor 56.15 1.03 17.75 7.94 0.17 2.78 6.23 4.59 2.87 0.48 2.1 0.1 17.0 210.0 1024.5 77.3 534.2 195.4 27.3 3.8 22.6 166.8 91.9 12.5 27.1 49.9 6.3 03GRBB59 lsp 374121 5737215 Lava Young lava flow in glaciated valley on west flank "Pl-ol-cpx basalt, seriate texture" 52.10 0.93 18.44 8.80 0.17 4.54 9.34 3.57 1.76 0.35 12.4 7.5 26.2 276.6 666.0 44.9 692.5 126.9 20.8 2.7 21.6 125.6 82.7 7.4 14.9 32.4 4.0 31.30 4.24 19.51 5.01 1.49 4.56 0.71 4.23 0.83 2.22 0.32 2.06 0.33 649.87 3.72 2.94 23.16 3.45 0.19 1.63 7.91 44.67 2.68 716.71 27.86 123.07 03GRGM10 lsp 375059 5736196 Lava Lava flow toe exposed (protruding from) on slope Pl-cpx-ol basaltic andesite 52.33 0.92 18.08 8.58 0.17 4.80 9.37 3.58 1.84 0.33 14.0 15.0 28.8 271.5 699.5 46.3 642.1 131.9 21.5 2.4 19.5 135.7 79.7 10.0 14.4 36.2 4.5 31.25 4.17 18.92 4.96 1.39 4.40 0.69 4.10 0.82 2.27 0.33 2.12 0.33 666.30 4.26 3.11 22.21 3.55 0.21 1.83 8.65 43.99 2.86 632.19 30.30 122.82 03GRGM20 lsp 379170 5736143 Lava "Older, cone-building lava flow" "Pl basaltic andesite, cpx, ol very rare" 53.36 0.90 20.32 7.24 0.14 2.66 8.65 4.11 2.24 0.38 5.0 0.7 17.3 217.1 800.8 60.4 691.4 153.1 21.9 2.6 21.5 184.7 73.2 15.7 19.4 39.5 5.3 35.91 4.73 20.94 5.24 1.46 4.57 0.70 4.16 0.82 2.28 0.34 2.09 0.34 783.36 5.55 3.87 22.87 4.08 0.26 2.41 15.03 58.36 2.89 690.85 17.81 147.83 03GRBB32 lsp 379204 5736312 Lava Older lava flow on southeast coast "Crystal-rich pl-cpx-ol lava, pl coarsely sieved" 52.51 1.06 17.73 8.63 0.18 4.81 9.21 3.60 1.90 0.37 17.2 31.1 28.2 261.6 689.4 50.9 530.0 149.9 23.5 2.9 21.9 157.5 84.5 7.9 17.7 32.3 4.5 32.91 4.44 20.31 5.31 1.50 4.83 0.76 4.63 0.94 2.54 0.37 2.31 0.37 665.58 4.93 4.00 24.90 3.99 0.27 2.04 9.48 52.33 2.02 549.53 32.51 145.01 03GRGM30 lsp 374047 5739073 Lava Flow on upper west flank; from south summit "Pl-opx-cpx-ol, smallish phenos" 55.21 0.83 17.57 7.64 0.16 4.15 8.43 3.80 1.87 0.34 13.5 19.8 24.4 228.5 686.2 50.7 610.1 135.3 20.6 2.5 19.6 135.8 76.1 8.6 17.6 40.5 4.9 32.04 4.28 19.52 5.04 1.43 4.59 0.70 4.10 0.81 2.17 0.32 2.03 0.32 680.53 3.94 3.36 22.28 3.64 0.22 1.78 9.34 50.56 3.32 632.76 26.29 132.27 03GRGM32 lsp 373323 5739865 Lava Lava flow "Pl-cpx-ol, smallish phenos" 53.26 0.88 17.34 8.24 0.17 4.77 9.16 3.58 2.15 0.47 18.7 37.1 28.1 255.4 809.3 57.2 752.4 145.9 22.3 2.0 21.0 141.8 78.4 9.4 16.0 44.2 2.8 38.42 5.27 24.12 6.41 1.89 5.76 0.82 4.47 0.86 2.20 0.32 1.98 0.32 784.40 4.23 3.32 23.31 3.80 0.21 1.99 9.24 56.77 3.48 761.38 28.92 139.98 03GRGM39 lsp 371303 5739747 Lava Flow at the coast that is young (but not historical or recent) "Pl-cpx-ol, flow banded" 53.17 0.99 18.71 8.16 0.16 3.56 8.68 3.88 2.28 0.41 8.2 6.2 22.7 264.4 852.0 60.5 634.6 162.4 23.7 2.9 20.2 170.7 84.1 13.6 18.5 42.9 6.4 37.98 5.03 22.30 5.63 1.50 4.91 0.76 4.45 0.90 2.45 0.37 2.25 0.36 824.78 5.80 3.90 24.16 4.41 0.26 2.53 11.35 58.29 2.29 620.90 24.84 153.68 03GRBB27 lnpu 377346 5741963 Lava Lava flow levee on northeast flank Pl-ol basaltic andesite 54.36 1.04 17.99 8.17 0.17 3.58 7.58 4.12 2.55 0.43 9.1 5.9 20.6 275.1 907.3 67.6 594.2 176.1 23.9 3.5 21.8 188.3 91.2 13.3 17.5 43.9 6.9 42.46 5.65 24.89 6.24 1.63 5.43 0.82 4.99 1.00 2.74 0.40 2.49 0.40 913.34 6.17 4.43 26.76 4.90 0.29 2.67 11.17 70.69 3.36 628.50 22.97 176.93 03GRGM11 lnpu 378429 5742589 Lava Young lava flow that enters the sea forming a flow delta Pl-rich pl-ol basaltic andesite 53.25 0.89 20.38 7.21 0.14 2.67 8.73 4.14 2.22 0.38 6.9 2.0 16.5 216.1 787.6 59.8 690.8 151.2 21.1 3.3 20.2 147.7 76.2 12.3 13.6 39.5 5.7 35.80 4.73 20.89 5.11 1.45 4.57 0.71 4.14 0.83 2.30 0.34 2.10 0.34 782.53 5.35 3.86 22.85 4.05 0.26 2.29 10.90 58.83 3.26 700.92 17.66 146.72 03GRBB42 sef 378800 5739725 Lava Southern levee of young lava flow on east flank Pl-ol-cpx basaltic andesite 52.86 0.89 20.08 7.57 0.15 3.14 9.10 3.83 2.01 0.38 7.8 6.8 19.3 228.4 750.5 52.7 670.4 140.1 20.2 2.1 21.3 144.6 80.3 9.9 20.3 40.2 4.2 32.50 4.28 19.31 4.87 1.38 4.25 0.67 3.99 0.80 2.18 0.32 1.98 0.32 716.62 4.77 3.40 21.46 3.65 0.22 2.04 9.98 53.07 3.32 686.83 20.35 132.10 03GRGM13 sef 379886 5739754 Lava Same flow as 03GRBB42 - lava that enters sea over sea cliff Pl-rich; minor ol and cpx 52.80 0.89 20.07 7.56 0.15 3.14 9.09 3.91 2.02 0.38 6.2 0.7 20.3 227.0 735.7 53.0 665.9 136.8 20.8 2.7 21.4 203.3 77.2 11.4 21.4 37.7 4.7 33.54 4.47 19.81 5.01 1.44 4.47 0.68 4.06 0.81 2.20 0.32 2.03 0.32 721.58 4.66 3.43 22.31 3.72 0.22 1.99 10.54 51.80 3.23 679.86 20.71 133.02 03GRBB30 sef 379574 5741136 Lava Same flow as 03GRGM18 - young lava on northeast coast Pl-ol-cpx basaltic andesite 52.81 0.94 18.44 8.37 0.17 4.03 8.95 3.79 2.12 0.38 13.7 15.8 25.0 255.6 788.3 58.2 607.1 151.0 22.4 2.3 20.0 147.5 82.4 10.6 20.0 39.5 4.3 34.56 4.62 20.82 5.34 1.49 4.70 0.73 4.24 0.86 2.28 0.34 2.13 0.34 761.44 4.94 3.62 23.02 3.90 0.24 2.13 9.23 57.82 3.27 615.73 26.77 140.79 03GRMC27 lnpu 374681 5741109 Lava Thin pahoehoe/sheet flow on north flank; vesicular Pl-cpx-ol basaltic andesite 52.15 0.98 17.55 8.55 0.17 5.18 9.47 3.53 2.04 0.38 23.2 65.5 28.1 266.1 716.8 61.2 582.2 151.8 22.1 3.2 18.5 118.6 81.3 10.3 11.7 43.5 5.2 33.75 4.50 20.51 5.18 1.41 4.71 0.70 4.19 0.85 2.30 0.33 2.06 0.32 698.94 5.55 4.00 22.57 4.07 0.25 2.31 9.11 59.96 2.49 583.48 31.80 142.56 03GRBB31 lnpu 379206 5741182 Lava Older lava flow on northeast coast Pl-px-minor ol basaltic andesite 53.00 0.95 18.48 8.13 0.17 4.10 8.92 3.74 2.12 0.38 12.5 15.8 24.7 257.3 783.6 57.5 598.1 150.4 22.4 2.6 21.5 178.3 82.4 10.1 16.3 43.6 3.8 34.98 4.68 21.05 5.42 1.47 4.77 0.73 4.40 0.87 2.40 0.34 2.14 0.35 769.12 5.09 3.68 23.44 3.99 0.24 2.21 9.74 59.19 3.70 613.95 26.86 143.91 03GRGM40 lnpu 379027 5741547 Lava Lava flow that floors (fills) the stream channel "Pl-rich basalt, only minor cpx and ol" 51.93 1.03 19.83 8.30 0.16 3.33 9.56 3.80 1.72 0.34 7.8 2.0 23.2 264.1 605.2 41.4 633.8 133.0 22.6 2.3 22.4 93.7 77.3 8.0 15.9 34.9 4.9 30.10 4.09 18.81 4.91 1.47 4.60 0.71 4.30 0.85 2.30 0.35 2.17 0.34 583.32 3.93 3.45 23.21 3.51 0.22 1.69 6.15 39.47 1.13 633.52 24.19 125.76 03GRBB41 lnpu 379042 5739338 Lava Polished lava flow in the gully between two older lava levees on east flank "Pl-cpx-ol basalt, xtl-rich" 51.90 0.92 17.38 8.71 0.18 5.55 10.02 3.39 1.64 0.31 19.9 55.0 32.8 281.8 628.1 41.1 594.5 126.3 21.3 2.3 17.8 111.6 80.3 8.1 13.0 32.3 3.0 29.63 4.01 18.35 4.84 1.41 4.44 0.70 4.21 0.86 2.28 0.32 2.03 0.32 614.67 3.96 2.93 22.47 3.41 0.19 1.72 7.21 42.29 2.24 621.16 36.23 119.11 03GRGM12 lnpu 379822 5739582 Lava "Lowest flow at coast in sea cliff, 10-12 m thick" 52.25 1.01 18.41 8.79 0.17 4.39 9.24 3.62 1.77 0.34 14.2 16.5 27.0 276.5 605.5 47.4 537.8 140.4 23.2 2.9 19.6 115.3 81.0 10.9 13.5 32.1 5.2 31.11 4.22 19.26 5.06 1.44 4.75 0.75 4.53 0.90 2.49 0.36 2.28 0.35 591.36 4.33 3.60 24.43 3.82 0.24 1.84 9.07 45.88 2.34 540.47 29.63 134.93 03GRMC23 lnpu 374382 5741868 Lava Young sheet lava flow on north flank "Pl-rich basaltic andesite, very small, scarce cpx" 53.38 0.90 20.40 7.19 0.14 2.64 8.73 4.03 2.22 0.38 6.5 2.4 16.4 216.8 797.4 60.6 699.9 154.8 21.1 2.5 21.9 176.8 76.8 10.4 20.9 38.0 5.8 34.84 4.57 20.13 5.03 1.40 4.42 0.68 4.04 0.80 2.24 0.32 2.07 0.32 776.02 5.36 3.87 22.12 4.04 0.25 2.29 10.14 58.92 3.52 694.50 17.66 145.16 03GRGM19 lnpu 379620 5740932 Lava "Older, cone-building lava flow a few tens of meters thick exposed on coast adjacent to younger flow of sample 03GRGM18" Pl-rich pl-cpx-ol basaltic andesite 52.37 1.06 18.34 8.71 0.17 4.16 9.06 3.78 1.96 0.38 11.6 18.4 26.1 255.1 692.2 52.4 543.9 154.6 24.7 2.9 20.9 110.5 80.9 10.4 13.6 36.9 6.3 35.46 4.75 21.82 5.59 1.59 5.13 0.80 4.82 0.97 2.64 0.39 2.44 0.38 671.72 5.04 4.15 25.83 4.29 0.28 2.16 10.15 50.60 2.08 541.87 28.71 149.48 03GRGM29 lnpu 373609 5743924 Lava Flow that forms a delta "Almost completely pl, minor cpx and ol, coarse-grained, pl-lath-filled groundmass" 53.46 0.90 20.34 7.24 0.14 2.61 8.65 4.06 2.23 0.38 6.8 1.4 16.3 229.1 802.6 60.5 690.7 151.4 21.1 2.6 20.6 91.9 75.1 12.1 15.6 44.3 4.7 35.56 4.71 21.01 5.25 1.49 4.60 0.71 4.14 0.83 2.29 0.35 2.09 0.34 788.96 5.30 3.94 22.98 4.14 0.26 2.29 13.34 60.72 3.38 706.57 17.08 149.57 03GRGM44 lnpu 373649 5742062 Lava 3-4 m thick lava flow exposed in dry channel "Pl-ol-cpx basaltic andesite, crystal rich" 52.28 0.97 17.43 8.65 0.17 5.18 9.41 3.51 2.02 0.37 21.4 56.7 27.5 266.0 701.2 60.8 564.8 150.7 22.1 3.3 19.1 112.5 81.7 11.2 19.0 35.8 6.5 33.66 4.50 20.64 5.20 1.42 4.67 0.73 4.30 0.87 2.35 0.35 2.15 0.34 676.40 5.37 3.79 23.14 4.07 0.25 2.33 8.78 58.23 3.20 558.57 32.28 142.82 03GRGM21A lnpu 378998 5737920 Lava "Young lava flow (not recent), about 3 m thick" Phenocrysts almost exclusively coarsely sieved pl; ol and cpx rare; coarse groundmass 53.78 0.89 19.98 7.36 0.14 2.84 8.42 4.05 2.18 0.36 8.8 4.5 18.0 228.2 803.7 56.1 668.3 141.7 21.1 2.9 22.3 178.8 74.0 10.8 16.4 35.4 5.9 34.62 4.65 20.93 5.20 1.47 4.60 0.70 4.12 0.84 2.31 0.34 2.17 0.34 778.61 5.13 3.49 22.53 3.88 0.24 2.21 9.78 53.81 1.34 661.96 20.46 135.97 03GRGM24 lnpu 378323 5738162 Lava "Lava flow, may be same as 03GRGM23B; may be coeval with the lithic pyroclastic flow" Phenocrysts almost exclusively coarsely sieved pl; ol and cpx rare; coarse groundmass 51.98 1.01 19.93 8.23 0.16 3.28 9.46 3.81 1.79 0.35 5.8 4.8 22.9 257.7 617.8 43.0 634.6 136.3 22.7 2.6 22.5 199.7 77.6 10.1 13.9 30.6 4.7 30.69 4.19 19.07 4.92 1.42 4.52 0.71 4.25 0.85 2.34 0.35 2.16 0.33 581.04 3.86 3.37 23.17 3.46 0.22 1.68 8.59 41.24 0.88 621.44 23.16 126.23 03GRGM37 lnpu 373387 5740704 Lava "Fairly young flow that fills drainage, then is incised by stream; actually a levee of a wider, thicker flow" Pl-cpx-ol 53.32 0.89 17.28 8.31 0.17 4.77 9.12 3.52 2.16 0.47 17.0 37.0 26.3 249.8 804.5 57.7 753.8 146.6 22.6 2.6 18.2 148.3 76.7 11.9 16.0 47.6 5.0 38.68 5.34 24.15 6.49 1.88 5.81 0.83 4.49 0.84 2.21 0.33 2.04 0.32 779.17 4.30 3.30 23.21 3.83 0.21 2.03 9.27 56.10 3.48 752.12 28.93 139.26 03GRMC25 snw 374518 5741416 Lava "Same flow as MC24 - Levee of prominent flow on north flank; ol and cpx intergrown, cpx to 3 mm" Pl-cpx-ol basaltic andesite 53.40 0.89 18.62 7.86 0.16 4.10 8.97 3.71 1.95 0.34 14.2 24.0 24.1 235.2 685.7 54.3 581.0 145.3 22.0 2.9 18.2 171.9 81.4 9.5 15.0 36.5 3.5 31.73 4.27 18.97 4.89 1.36 4.48 0.70 4.13 0.85 2.26 0.33 2.09 0.33 664.31 4.80 3.51 22.74 3.91 0.23 2.07 10.24 53.22 3.56 582.81 26.60 137.18 03GRMC30 snw 374101 5740828 Lava Top of thick blocky lava flow on north flank Pl-cpx-ol 53.35 0.90 18.56 8.06 0.16 4.09 8.86 3.72 1.97 0.34 14.5 22.3 24.2 236.0 694.1 55.3 575.3 146.7 21.6 2.4 19.1 163.4 81.7 12.7 16.5 29.3 4.8 31.67 4.20 18.76 4.80 1.32 4.59 0.69 4.11 0.84 2.26 0.33 2.09 0.33 678.94 4.95 3.59 22.66 3.94 0.24 2.12 10.38 54.27 3.60 584.46 26.52 139.57 03GRMC32 snw 373981 5740572 Lava "Same flow as MC30 - Top of large blocky, coast-reaching flow on north flank; clots to 3-4 mm" "Pl-cpx-ol, but more pl-rich than other similar rocks" 53.39 0.88 19.23 7.70 0.15 3.57 8.90 3.83 2.00 0.35 10.7 20.9 22.0 219.1 709.4 55.8 612.1 148.3 21.4 3.1 20.8 158.8 77.7 9.3 18.2 35.9 6.5 33.09 4.35 19.52 5.10 1.43 4.58 0.71 4.16 0.86 2.34 0.34 2.12 0.34 700.88 5.01 3.53 22.46 3.97 0.23 2.16 10.57 54.94 3.54 621.67 23.98 140.43 03GRMC33 snw 375489 5741069 Lava Same flow as MC30 - lava at gully edge on north flank Pl-cpx-ol 53.36 0.89 18.66 8.07 0.16 3.98 8.84 3.73 1.98 0.34 14.4 18.2 24.2 233.9 701.3 55.2 580.5 147.8 21.1 2.9 19.5 164.2 80.7 9.0 19.0 31.1 4.9 30.91 4.11 18.53 4.89 1.37 4.32 0.66 4.02 0.83 2.22 0.33 2.04 0.33 666.78 4.86 3.46 21.96 3.91 0.24 2.09 10.39 53.53 3.58 580.68 25.72 138.43 03GRGM41 snw 371801 5741388 Lava "Same flow as MC30 - young lava flow with typical thick, lush, dark green grass covering (much like that of lower 1980 flows)" Pl-cpx-ol 53.49 0.88 19.13 7.75 0.16 3.52 8.85 3.84 2.01 0.36 11.2 18.1 23.3 222.6 714.3 57.0 619.0 150.2 22.4 3.2 21.3 95.5 78.5 10.5 19.6 41.4 4.7 33.25 4.40 19.63 5.02 1.37 4.55 0.71 4.19 0.84 2.30 0.34 2.10 0.34 701.79 5.02 3.60 22.70 3.97 0.24 2.19 9.83 54.50 3.60 610.28 23.92 141.00 03GRGM31 anf 377232 5742780 Lava "Most crystalline rock seen on Gareloi; part of ""older"" rock package" Pl-amphibole-cpx-opx andesite 61.18 0.68 17.16 6.26 0.15 2.38 5.64 4.19 2.15 0.22 4.0 2.5 13.0 139.2 779.3 46.6 452.7 158.1 19.8 3.0 18.7 71.7 73.9 11.9 14.4 28.3 4.1 25.35 3.22 13.94 3.54 1.22 3.38 0.54 3.33 0.70 1.99 0.32 2.03 0.34 755.22 4.03 4.13 19.97 4.11 0.33 1.43 12.30 46.08 2.15 456.33 12.30 155.07 03GRMC08 ssf 375303 5735847 Lava Lava from front of fall-covered mound (vent?) on southwest flank. Distinctive wormy vesicles "Finely sieved pl, cpx, ol andesite" 52.12 0.98 18.07 8.86 0.18 4.69 9.49 3.46 1.82 0.32 15.4 15.5 28.7 277.4 619.5 48.2 562.3 139.3 22.5 3.1 20.3 147.0 81.7 9.0 18.2 31.8 3.9 31.97 4.31 19.71 5.15 1.46 4.84 0.75 4.47 0.90 2.51 0.36 2.24 0.35 606.71 4.39 3.52 24.23 3.94 0.23 1.86 8.41 48.37 3.00 582.58 31.96 134.07 03GRMC13 see 375368 5742732 Lava Thin (~1 m) flow on north flank Pl-cpx-ol basaltic andesite. Coarse pl-rich groundmass. Coarsely sieved pl. Phenocryst poor. 56.12 1.09 17.43 8.18 0.18 2.81 6.19 4.59 2.94 0.48 3.9 1.4 18.6 219.2 997.8 77.8 502.0 205.2 29.8 4.5 21.0 161.8 96.5 16.2 29.5 50.2 6.6 46.60 6.19 27.64 6.88 1.73 6.14 0.94 5.66 1.14 3.16 0.46 2.91 0.47 974.30 6.95 5.15 31.16 5.69 0.35 2.92 13.94 77.27 3.76 504.12 20.91 200.76 03GRBB38 see 379149 5738733 Lava Polished lava flow in the gully between two older lava levees on east flank "Pl-rich, only one cpx, no ol" 52.10 0.99 20.04 7.98 0.16 3.27 9.61 3.76 1.75 0.34 10.4 13.0 21.2 252.9 621.9 42.2 645.8 136.3 23.1 2.7 21.5 199.1 77.4 9.1 16.6 43.6 4.3 32.01 4.33 19.77 5.07 1.44 4.57 0.72 4.43 0.90 2.46 0.35 2.20 0.35 600.20 4.09 3.45 24.54 3.53 0.22 1.73 5.85 41.39 0.70 656.53 23.92 127.08 03GRBB39 see 379303 5739042 Lava Older lava flow atop levee on east flank "Pl-rich basaltic andesite, almost no cpx, ol. Pl coarsely sieved" 52.47 1.00 20.33 7.57 0.16 3.11 9.27 3.87 1.86 0.37 7.6 5.5 20.5 237.4 673.3 47.1 651.2 143.3 22.6 3.1 18.4 103.3 79.0 7.8 14.3 38.3 4.3 33.36 4.47 20.49 5.34 1.56 4.85 0.75 4.55 0.91 2.51 0.35 2.27 0.36 656.79 4.27 3.84 24.24 3.69 0.25 1.84 7.64 48.21 2.54 672.84 21.74 137.06 03GRBB52 see 373516 5738057 Lava Very old (early Gareloi) flow on ridge immediately south of west flank flow "Pl-cpx-ol basaltic andesite, very pl-rich" 54.36 0.79 18.76 7.57 0.15 4.42 8.33 3.80 1.59 0.23 17.7 25.3 24.6 230.8 566.7 38.0 555.3 113.2 21.3 1.6 20.7 113.5 72.0 8.7 10.9 26.1 2.2 24.75 3.34 15.15 4.04 1.21 3.93 0.62 3.74 0.78 2.15 0.31 1.98 0.32 554.61 3.00 2.27 21.41 2.98 0.16 1.29 7.91 37.09 1.95 557.66 25.06 102.28 03GRBB57 see 373868 5736976 Lava Old lava flow in glaciated valley on west flank Pl-cpx-ol basaltic andesite 52.91 0.78 17.93 8.10 0.16 5.28 9.66 3.36 1.56 0.25 21.7 48.6 30.5 249.0 670.9 33.5 602.6 105.0 21.5 1.4 19.5 145.7 75.5 8.8 14.0 32.7 3.9 26.73 3.74 17.07 4.50 1.31 4.22 0.65 3.91 0.78 2.16 0.31 1.95 0.31 660.78 2.98 2.11 22.95 2.89 0.14 1.25 8.21 33.58 2.13 627.51 31.77 99.21 03GRGM14 see 375757 5742650 Lava Blocky flow or dome; old sequence; no young tephra on top "Pl-cpx-ol basaltic andesite, ol are altered" 53.85 0.84 18.62 8.13 0.19 3.93 8.91 3.64 1.62 0.28 9.3 1.7 21.9 259.8 724.5 28.5 581.0 116.9 21.5 1.8 20.0 162.8 83.9 8.6 14.9 33.1 4.1 28.33 3.81 17.27 4.59 1.39 4.22 0.66 3.98 0.80 2.19 0.32 2.03 0.32 691.80 3.29 2.58 21.80 2.98 0.20 1.41 7.82 27.02 1.33 564.25 23.44 107.38 03GRGM26A see 378242 5738106 Lava Older lava flow exposed in bottom of dry stream channel Phenocrysts almost exclusively coarsely sieved pl; ol and cpx rare; coarse groundmass 54.21 0.86 20.10 7.24 0.15 2.67 8.20 4.02 2.18 0.36 5.2 2.0 19.2 211.1 781.9 56.8 660.4 145.9 21.6 2.6 22.4 143.5 77.7 11.3 19.5 39.3 6.3 34.35 4.58 20.18 5.07 1.43 4.39 0.69 4.11 0.84 2.28 0.35 2.14 0.34 769.48 4.90 3.56 22.83 4.05 0.24 2.12 10.36 57.19 3.33 679.73 18.92 143.18 03GRGM28 see 378970 5737549 Lava Forms sinuous ridge; older than flow on either side Phenocrysts almost exclusively coarsely sieved pl; ol and cpx rare; coarse groundmass 54.15 0.87 19.89 7.31 0.15 2.77 8.29 4.06 2.17 0.35 5.7 3.0 18.5 218.7 770.9 55.9 665.2 144.2 20.9 2.7 19.5 190.9 75.0 10.4 14.9 38.3 5.3 32.99 4.39 19.72 4.91 1.41 4.32 0.67 4.08 0.81 2.23 0.34 2.08 0.34 751.99 4.85 3.46 22.29 4.01 0.23 2.09 9.86 55.20 2.42 677.85 19.53 140.71 03GRMC22 378822 5736048 Scoria 7-18-cm-thick unit of brownish-grey scoria lapilli to 8mm "Pl-rich basaltic andesite, almost no cpx, small ol, nice glass" 52.33 0.85 20.61 7.65 0.15 2.96 9.43 3.75 1.91 0.36 5.5 1.8 17.7 221.6 713.8 51.1 713.0 136.1 20.4 2.9 21.3 189.7 77.8 10.6 15.6 36.1 3.7 32.08 4.27 18.80 4.78 1.34 4.17 0.64 3.88 0.76 2.10 0.30 1.90 0.30 690.57 4.45 3.29 20.88 3.53 0.22 1.89 9.52 49.79 3.12 709.70 19.57 124.93 03GRMC26a 374541 5741345 Scoria Base of >40-cm-thick unit of mud-coated scoria lapilli fall with vague reverse grading "Pl-cpx-ol basalt, cpx have nice melt inclusions" 52.80 0.98 18.44 8.60 0.17 4.12 8.73 3.66 2.10 0.39 13.1 12.4 25.5 267.4 788.5 58.6 592.1 153.7 21.8 3.7 21.4 194.3 85.4 14.0 20.9 40.9 5.5 34.58 4.60 20.60 5.29 1.47 4.70 0.73 4.25 0.85 2.27 0.34 2.11 0.33 769.34 5.14 3.73 22.80 4.12 0.24 2.24 10.75 56.76 3.68 595.55 27.64 145.02 03GRMC28 374631 5741031 Scoria "19-cm-thick unit of reversely graded scoria lapilli fall, sampled at base" Pl-cpx-ol basalt 52.71 0.92 19.43 8.28 0.17 3.84 8.87 3.55 1.88 0.36 11.9 19.9 24.6 242.6 660.8 52.9 578.2 153.5 22.6 3.8 21.4 200.6 76.4 11.7 18.8 37.9 4.2 31.46 4.08 18.28 4.73 1.32 4.35 0.67 3.98 0.82 2.27 0.33 2.08 0.33 633.51 5.03 3.61 21.98 3.88 0.24 2.17 10.64 50.30 3.40 565.73 27.06 140.15 03GRBB22 375169 5736059 Xenolith bomb Gabbro lithic bomb on south flank Pl-cpx-ol-bt gabbro 45.19 0.82 24.43 8.15 0.11 3.86 15.36 1.79 0.22 0.07 19.7 12.4 27.3 337.9 183.6 7.0 965.1 34.0 7.7 0.0 22.8 26.1 59.5 4.9 3.8 8.8 1.8 8.39 1.20 5.86 1.67 0.83 1.60 0.25 1.48 0.28 0.77 0.10 0.61 0.09 171.09 0.44 0.38 7.39 0.70 0.03 0.20 2.42 5.85 0.55 989.14 28.91 19.25