zQUADCLATDEGNLATMINN LATDIRCLONGDEGNLONGMINNLONGDIRCSAMPLEC ROCK_TYPECMETHODCMINERALC AGENCOMMENTCREFERENCECPLATITUDEN LONGITUDEN ERRORNREC_NONNSACLASSN Blying Sound 59.000042.40000000N149.000031.400000000000000WBS-1 Granite K-Ar Biotite 61.000000000000000Granite of Harding Icefield region, southern tip of Aialik Peninsula, recalculated with new Constants (Steiger and Jager, 1977). Tysdal and Case, 1979; Lytwyn and others, 2000 59.7066666666667149.523333333333 1.800000000000000299 1320 Blying Sound 59.000042.40000000N149.000031.400000000000000WBS-1 Granite K-Ar Muscovite 56.000000000000000Granite of Harding Icefield region, southern tip of Aialik Peninsula, recalculated with new Constants (Steiger and Jager, 1977). Tysdal and Case, 1979; Lytwyn and others, 2000 59.7066666666667149.523333333333 1.600000000000000300 1320 Cordova 60.000027.90000000N145.000017.940000000000000W67APr 1 Granitic rock K-Ar Phlogopite 51.600000000000000Location revised Winkler and Plafker, 1981, Plafker and others, 1985; Nelson and others, 1985 60.4650000000000145.299000000000 2.000000000000000420 1300 Cordova 60.000029.30000000N144.000023.100000000000000W71APr 25C Granitic rock K-Ar Hornblende 53.500000000000000 Winkler and Plafker, 1981, Plafker et al, 1985; Nelson and others, 1985 60.4883333333333144.385000000000 1.600000000000000421 1300 Cordova 60.000029.30000000N144.000023.700000000000000WCordova1 Granodiorite K-Ar Biotite 52.200000000000000 Tysdal et al, 1976, Plafker and Lanphere, 1974, Plafker, 1974 60.4883333333333144.395000000000 .000000000000000422 1300 Cordova 60.000032.30000000N145.000011.200000000000000W85APr 140 Dacite K-Ar Whole-rock 47.230000000000000Dacite porphyry Plafker, written communication, 1986 60.5383333333333145.186666666667 .000000000000000423 1300 Cordova 60.000033.40000000N145.000045.100000000000000W72APr 2A3 Basalt K-Ar Whole-rock 43.000000000000000Recalculated with 1976 constants Plafker, written communication, 1986 60.5566666666667145.751666666667 6.100000000000000424 1135 Cordova 60.000034.40000000N145.000015.100000000000000W84APr 9 Granodiorite K-Ar Biotite 51.400000000000000 Plafker, written communication, 1986 60.5733333333333145.251666666667 1.500000000000000425 1300 Cordova 60.000036.60000000N144.000011.400000000000000W71APr 20B Granitic rock K-Ar Hornblende 50.600000000000000 Winkler and Plafker, 1981; Nelson and others, 1985 60.6100000000000144.190000000000 1.500000000000000426 1300 Cordova 60.000039.70000000N144.000010.700000000000000W71APr 20C Tonalite K-Ar Biotite 50.900000000000000 Winkler and Plafker, 1981; Nelson and others, 1985 60.6616666666667144.178333333333 1.500000000000000427 1300 Cordova 60.000041.80000000N145.000031.100000000000000W85ANk 96B Gabbro K-Ar Hornblende 64.500000000000000 Plafker, written communication, 1986; Winkler and Plafker, 1993 60.6966666666667145.518333333333 2.100000000000000428 1380 Cordova 60.000042.10000000N145.000029.200000000000000W84APr 8 Granodiorite K-Ar Biotite 52.300000000000000 Plafker, written communication, 1986 60.7016666666667145.486666666667 1.600000000000000429 1300 Cordova 60.000042.10000000N145.000029.200000000000000W84APr 8 Granodiorite K-Ar Hornblende 49.900000000000000Minimum age Plafker, written communication, 1986 60.7016666666667145.486666666667 1.500000000000000430 1300 Cordova 60.000042.40000000N146.0000 7.700000000000000W71APr 22c Granodiorite K-Ar Biotite 53.200000000000000Location revised Winkler et al, 1981; Nelson and others, 1985 60.7066666666667146.128333333333 1.600000000000000431 1300 Cordova 60.000042.40000000N146.0000 7.700000000000000W71APr 22c Granodiorite K-Ar Hornblende 50.500000000000000Location revised Winkler and Plafker, 1981, Plafker et al, 1985; Nelson and others, 1985 60.7066666666667146.128333333333 1.500000000000000432 1300 Cordova 60.000052.05000000N146.000010.150000000000000W71APr 23A Amphibolite K-Ar Hornblende 47.600000000000000Greenschist facies amphibolite, location revised Winkler and Plafker, 1981; Nelson and others, 1985 60.8675000000000146.169166666667 1.400000000000000433 951 Cordova 60.000058.50000000N146.000043.100000000000000W83APr 312 Diabase K-Ar Whole-rock 130.00000000000000Johnstone Cove, excess argon, recalculated with 1976 constants Plafker, written communication, 1986 60.9750000000000146.71833333333314.000000000000000434 1135 Kenai 60.0000 4.10000000N151.000038.800000000000000W7-14-73-3 Ash Fission-track Zircon 8.500000000000000Kenai Peninsula, Sterling Formation. Age revised in Turner and others (1980). Triplehorn et al, 1977; Turner et al, 1980a 60.0683333333333151.646666666667 1.000000000000000679 540 Kenai 60.0000 4.10000000N151.000038.800000000000000W7-14-73-3 Ash K-Ar Plagioclase 8.900000000000000Kenai Peninsula, Sterling Formation. Age revised in Turner and others (1980). Triplehorn et al, 1977; Turner et al, 1980a 60.0683333333333151.646666666667 1.000000000000000680 540 Kenai 60.0000 6.80000000N152.000035.100000000000000W62ALe 6e Quartz diorite K-Ar Biotite 156.60000000000000Rounded granitic boulders within the Chisik Conglomerate member of the Naknek Formation Detterman et al, 1965, Magoon et al, 1976 60.1133333333333152.585000000000 .000000000000000681 3016 Kenai 60.0000 6.80000000N152.000035.100000000000000W62ALe 6e Quartz diorite K-Ar Hornblende 159.70000000000000Rounded granitic boulders within the Chisik Conglomerate member of the Naknek Formation, recalucated age w/Steiger and Jager (1977) constants Detterman et al, 1965, Magoon et al, 1976, Wilson and others, 2006 60.1133333333333152.585000000000 .000000000000000682 3016 Kenai 60.000011.15000000N151.000027.700000000000000W7-13-73-9 Ash K-Ar Plagioclase 7.000000000000000Kenai Peninsula, location revised, Sterling Formation. Age revised in Turner and others (1980). Triplehorn et al, 1977; Turner et al, 1980a 60.1858333333333151.461666666667 .700000000000000683 540 Kenai 60.000012.30000000N151.000026.000000000000000W7-13-73-6 Ash K-Ar Hornblende 7.400000000000000Kenai Peninsula, location revised, Sterling Formation. Age revised in Turner and others (1980). Triplehorn et al, 1977; Turner et al, 1980a 60.2050000000000151.433333333333 .700000000000000684 540 Kenai 60.000012.30000000N151.000026.000000000000000W7-13-73-6 Ash K-Ar Plagioclase 8.800000000000000Kenai Peninsula, location revised, Sterling Formation. Age revised in Turner and others (1980). Triplehorn et al, 1977; Turner et al, 1980a 60.2050000000000151.433333333333 .500000000000000685 540 Kenai 60.000014.15000000N151.000024.050000000000000WDT75-200 Ash Fission-track Zircon 6.600000000000000Sterling Formation, Clamgulchian Stage Turner et al, 1980a 60.2358333333333151.400833333333 .700000000000000686 540 Kenai 60.000015.20000000N152.000053.160000000000000W62ALe 5 Granodiorite K-Ar Biotite 174.00000000000000Alaska-Aleutian Range batholith, recalc. with 1976 constants Detterman et al, 1965, Reed and Lanphere, 1969, 1972, Magoon et al, 1976 60.2533333333333152.886000000000 .000000000000000687 3404 Kenai 60.000015.20000000N152.000053.160000000000000W62ALe 5 Granodiorite K-Ar Hornblende 171.90000000000000Alaska-Aleutian Range batholith, recalc. with 1976 constants Detterman et al, 1965, 1976, Magoon et al, 1976, Reed and Lanphere, 1969, 1972 60.2533333333333152.886000000000 .000000000000000688 3404 Kenai 60.000012.30000000N151.000026.100000000000000WDT75-201 Tuff K-Ar Hornblende 5.000000000000000Crystal tuff, Sterling Formation. Mean of 2 splits Turner et al, 1980a 60.2050000000000151.435000000000 .800000000000000689 540 Kenai 60.000012.30000000N151.000026.100000000000000WDT75-201 Tuff K-Ar Plagioclase 5.900000000000000Crystal tuff, Sterling Formation. Mean of 2 splits Turner et al, 1980a 60.2050000000000151.435000000000 .500000000000000690 540 Kenai 60.000035.40000000N152.000046.800000000000000W70AR 175 Granodiorite K-Ar Biotite 97.800000000000000Age recalculated with 1976 constants. Age suspect, may be reset by younger plutonism. Reed and Lanphere, 1972, 1973, Magoon et al, 1976, Detterman et al, 1976 60.5900000000000152.780000000000 2.800000000000000691 3404 Kenai 60.000036.90000000N152.000037.700000000000000W70AR 177 Quartz diorite K-Ar Biotite 163.00000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976, Detterman et al, 1976 60.6150000000000152.628333333333 4.700000000000000692 3404 Kenai 60.000036.90000000N152.000037.700000000000000W70AR 177 Quartz diorite K-Ar Hornblende 161.00000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Detterman et al, 1976, Magoon et al, 1976 60.6150000000000152.628333333333 4.700000000000000693 3404 Kenai 60.000040.60000000N152.000027.100000000000000W70AR 178 Granodiorite K-Ar Biotite 165.00000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976, Detterman et al, 1976 60.6766666666667152.451666666667 4.800000000000000694 3404 Kenai 60.000040.60000000N152.000027.100000000000000W70AR 178 Granodiorite K-Ar Hornblende 162.00000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976 60.6766666666667152.451666666667 4.800000000000000695 3404 Kenai 60.000044.60000000N152.000057.500000000000000W70AR 146 Granodiorite K-Ar Biotite 68.200000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976 60.7433333333333152.958333333333 1.900000000000000696 1660 Kenai 60.000044.90000000N152.000048.700000000000000W70AR 173 Diorite K-Ar Biotite 67.200000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976 60.7483333333333152.811666666667 1.900000000000000697 2430 Kenai 60.000044.90000000N152.000048.700000000000000W70AR 173 Diorite K-Ar Hornblende 71.500000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976 60.7483333333333152.811666666667 2.100000000000000698 2430 Kenai 60.000048.20000000N152.000021.300000000000000W66AR 1464 Quartz monzonite K-Ar Biotite 159.00000000000000Age recalculated with 1976 constants Reed and Lanphere, 1969, 1972, 1973, Magoon et al, 1976, Detterman et al, 197660.8033333333333152.355000000000 .000000000000000699 3404 Kenai 60.000048.30000000N152.000029.500000000000000W70AR 156 Diorite K-Ar Hornblende 146.00000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976, Detterman et al, 1976 60.8050000000000152.491666666667 4.300000000000000700 3404 Kenai 60.000049.90000000N152.000034.900000000000000W70AR 158 Quartz diorite K-Ar Biotite 70.000000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976, Detterman et al, 1976 60.8316666666667152.581666666667 2.000000000000000701 2410 Kenai 60.000049.90000000N152.000034.900000000000000W70AR 158 Quartz diorite K-Ar Hornblende 74.400000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976, Detterman et al, 1976 60.8316666666667152.581666666667 2.200000000000000702 2410 Kenai 60.000051.90000000N152.000040.800000000000000W70AR 147 Granodiorite K-Ar Biotite 65.400000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976 60.8650000000000152.680000000000 1.800000000000000703 1660 Kenai 60.000051.90000000N152.000040.800000000000000W70AR 147 Granodiorite K-Ar Hornblende 67.600000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976 60.8650000000000152.680000000000 2.000000000000000704 1660 Kenai 60.000056.60000000N152.000051.700000000000000W70AR 140 Granodiorite K-Ar Biotite 65.100000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976, Detterman et al, 1976 60.9433333333333152.861666666667 1.900000000000000705 1660 Kenai 60.000056.60000000N152.000051.700000000000000W70AR 140 Granodiorite K-Ar Hornblende 70.500000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976 60.9433333333333152.861666666667 2.000000000000000706 1660 Kenai 60.000059.10000000N152.000016.800000000000000W70AR 179 Quartz diorite K-Ar Biotite 71.300000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976, Detterman et al, 1976 60.9850000000000152.280000000000 2.000000000000000707 2410 Kenai 60.000059.10000000N152.000016.800000000000000W70AR 179 Quartz diorite K-Ar Hornblende 70.600000000000000Age recalculated with 1976 constants Reed and Lanphere, 1972, 1973, Magoon et al, 1976, Detterman et al, 1976 60.9850000000000152.280000000000 2.100000000000000708 2410 Middleton Island59.000054.80000000N144.000022.900000000000000W72APr 76A1Basalt K-Ar Whole-rock 31.200000000000000Basaltic dike rock from Kayak Island. Analytical data does not match reported age. Winkler and Plafker, 1981; Nelson and others, 1985 59.9133333333333144.381666666667 1.300000000000000883 1080 Seldovia 59.0000 .20000000N151.000042.400000000000000W7AF23-9 Schist K-Ar Muscovite 194.70000000000000Quartz-mica schist, approximate location, recalculated using Steiger and Jager, 1977 constants Carden et al, 1977 59.0033333333333151.706666666667 5.70000000000000012623610 Seldovia 59.000022.20000000N151.000048.600000000000000W74PG79 Schist K-Ar Muscovite 196.10000000000000Quartz-mica schist, approximate location, recalculated using Steiger and Jager, 1977 constants Carden et al, 1977 59.3700000000000151.810000000000 5.80000000000000012633610 Seldovia 59.000027.70000000N151.000042.400000000000000WSD3-3 Greenschist K-Ar Actinolite 195.00000000000000Approximate corrected location, recalculated using Steiger and Jager, 1977 constants Forbes and Lanphere, 1973, Magoon et al, 1976, Carden et al, 1977 59.4616666666667151.70666666666711.00000000000000012643610 Seldovia 59.000027.70000000N151.000042.400000000000000WSD3-3 Greenschist K-Ar Chlorite 185.10000000000000Approximate corrected location, recalculated using Steiger and Jager, 1977 constants Forbes and Lanphere, 1973, Magoon et al, 1976, Carden et al, 1977 59.4616666666667151.706666666667 8.30000000000000012653610 Seldovia 59.000027.70000000N151.000042.400000000000000WSD3-3 Greenschist K-Ar Mica 192.30000000000000Approximate corrected location, white mica concentrate, recalculated using Steiger and Jager, 1977 constants Forbes and Lanphere, 1973, Magoon et al, 1976, Carden et al, 1977 59.4616666666667151.70666666666710.00000000000000012663610 Seldovia 59.000027.70000000N151.000042.400000000000000W74AF4B.1 Schist K-Ar Amphibole 166.80000000000000Blueschist, crossite date, approximate location, recalculated using Steiger and Jager, 1977 constants Carden et al, 1977 59.4616666666667151.706666666667 4.90000000000000012673610 Seldovia 59.000027.70000000N151.000042.400000000000000W74AF23-10 Schist K-Ar Amphibole 188.60000000000000Amphibole-mica schist, approximate location, recalculated using Steiger and Jager, 1977 constants Carden et al, 1977 59.4616666666667151.706666666667 5.50000000000000012683610 Seldovia 59.000027.70000000N151.000042.400000000000000W74AF23-10 Schist K-Ar Muscovite 196.60000000000000Amphibole-mica schist, approximate location, recalculated using Steiger and Jager, 1977 constants Carden et al, 1977 59.4616666666667151.706666666667 5.80000000000000012693610 Seldovia 59.000028.00000000N151.000044.000000000000000WSD9-3 Schist K-Ar Crossite 157.80000000000000Blueschist, crossite date, argon loss?, approximate location, recalculated using Steiger and Jager, 1977 constants Forbes and Lanphere, 1973, Magoon et al, 1976, Carden et al, 1977 59.4666666666667151.733333333333 4.80000000000000012703610 Seldovia 59.000028.00000000N151.000044.000000000000000WSD9-3 Schist K-Ar PH 192.90000000000000Blueschist, possible argon loss, approximate location, recalculated using Steiger and Jager, 1977 constants Forbes and Lanphere, 1973, Magoon et al, 1976, Carden et al, 1977 59.4666666666667151.733333333333 5.70000000000000012713610 Seldovia 59.000046.10000000N151.0000 9.450000000000000W7-21-73-1 Ash Fission-track Zircon 8.800000000000000Kenai Peninsula, Beluga? Formation. Age revised in Turner and others (1980). Triplehorn et al, 1977; Turner et al, 1980a 59.7683333333333151.157500000000 1.0000000000000001272545 Seldovia 59.000046.10000000N151.0000 9.450000000000000W7-21-73-1 Ash K-Ar Plagioclase11.300000000000000Kenai Peninsula, Beluga? Formation. Age revised in Turner and others (1980). Triplehorn et al, 1977; Turner et al, 1980a 59.7683333333333151.157500000000 .7000000000000001273545 Seldovia 59.000042.35000000N151.000016.800000000000000W7-21-73-5 Ash Fission-track Zircon 8.100000000000000Kenai Peninsula, Beluga? Formation. Age revised in Turner and others (1980). Triplehorn et al, 1977; Turner et al, 1980a 59.7058333333333151.280000000000 1.0000000000000001274545 Seldovia 59.000042.20000000N151.000016.700000000000000WDT75-203 Tuff Fission-track Apatite 12.900000000000000Crystal vitric tuff mostly altered to clay, Beluga Fm. Turner et al, 1980a 59.7033333333333151.278333333333 5.1000000000000001275545 Seldovia 59.000042.20000000N151.000016.700000000000000WDT75-203 Tuff K-Ar Plagioclase 8.800000000000000Crystal vitric tuff mostly altered to clay, Beluga Formation. Mean of 2 analyses. Turner et al, 1980a 59.7033333333333151.278333333333 .9000000000000001276545 Seldovia 59.000042.60000000N151.000014.300000000000000WDT75-202 Tuff K-Ar Plagioclase 7.200000000000000Crystal vitric tuff, Beluga Formation Turner et al, 1980a 59.7100000000000151.238333333333 1.3000000000000001277545 Seldovia 59.000042.70000000N151.000016.100000000000000WDT75-204 Ash Fission-track Zircon 7.600000000000000Beluga Formation Turner et al, 1980a 59.7116666666667151.268333333333 .7000000000000001278545 Seldovia 59.000042.70000000N151.000016.100000000000000WDT75-204 Ash K-Ar Plagioclase 8.100000000000000Beluga Formation. Mean of 2 analyses Turner et al, 1980a 59.7116666666667151.268333333333 .7000000000000001279545 Seldovia 59.000045.70000000N151.000010.150000000000000W7-22-73-4 Ash Fission-track Zircon 8.100000000000000Kenai Peninsula, Beluga? Formation. Age revised in Turner and others (1980). Triplehorn et al, 1977; Turner et al, 1980a 59.7616666666667151.169166666667 1.0000000000000001280545 Seldovia 59.000045.70000000N151.000010.150000000000000W7-22-73-4 Ash K-Ar Plagioclase 8.100000000000000Kenai Peninsula, Beluga? Formation. Age revised in Turner and others (1980). Triplehorn et al, 1977; Turner et al, 1980a 59.7616666666667151.169166666667 .8000000000000001281545 Seldovia 59.000046.20000000N151.0000 8.000000000000000WDT75-210 Ash K-Ar Plagioclase 7.200000000000000Sterling Formation, Clamgulchian Stage Turner et al, 1980a 59.7700000000000151.133333333333 .6000000000000001282540 Seldovia 59.000046.20000000N151.0000 8.000000000000000WDT75-211 Ash Fission-track Zircon 5.40000000000000020-40m stratigraphically above DT75-210. Sterling Formation. Turner et al, 1980a 59.7700000000000151.133333333333 .6000000000000001283540 Seldovia 59.000046.20000000N151.0000 8.000000000000000WDT75-211 Ash K-Ar Plagioclase11.700000000000000Also dated 14.1 m.y., 20-40m stratigraphically above DT75-210. Sterling Formation; age may be too old due to detrital contamination. Turner et al, 1980a 59.7700000000000151.133333333333 .9000000000000001284540 Seldovia 59.000046.20000000N151.0000 8.000000000000000WDT75-212 Ash K-Ar Plagioclase32.200000000000000Also dated 30.1 m.y., 33m stratigraphically above DT75-211. Sterling Formation; age may be too old due to detrital contamination. Turner et al, 1980a 59.7700000000000151.133333333333 1.9000000000000001285540 Seldovia 59.000047.80000000N151.0000 6.500000000000000WDT75-209b Tuff K-Ar Plagioclase 9.100000000000000Also dated at 8.2 Ma. Sterling? Formation, age may be too old due to detrital contamination. Turner et al, 1980a 59.7966666666667151.108333333333 .7000000000000001286540 Seldovia 59.000047.80000000N151.0000 6.700000000000000WDT75-206 Ash Fission-track Zircon 5.600000000000000Composite of four thin beds, Sterling Formation Turner et al, 1980a 59.7966666666667151.111666666667 .9000000000000001287540 Seldovia 59.000047.80000000N151.0000 6.700000000000000WDT75-206 Ash K-Ar Plagioclase 4.600000000000000Also dated at 8.4 m.y., composite of four thin beds. Turner et al, 1980a 59.7966666666667151.111666666667 .7000000000000001288540 Seldovia 59.000047.80000000N151.0000 6.700000000000000WDT75-207 Tuff Fission-track Zircon 4.90000000000000024m stratigraphically higher than DT75-206. Sterling Formation Turner et al, 1980a 59.7966666666667151.111666666667 .8000000000000001289540 Seldovia 59.000047.80000000N151.0000 6.700000000000000WDT75-207 Tuff K-Ar Plagioclase 7.60000000000000024m stratigraphically higher than DT75-206. Believed to be too old due to detrital contamination. Turner et al, 1980a 59.7966666666667151.111666666667 .6000000000000001290540 Seldovia 59.000047.80000000N151.0000 6.700000000000000WDT75-208 Tuff K-Ar Hornblende 4.70000000000000035m stratigraphically higher than DT75-206. Sterling Formation Turner et al, 1980a 59.7966666666667151.111666666667 .6000000000000001291540 Seldovia 59.000047.80000000N151.0000 6.700000000000000WDT75-208 Tuff K-Ar Plagioclase 4.20000000000000035m stratigraphically higher than DT75-206. Sterling Formation. Turner et al, 1980a 59.7966666666667151.111666666667 1.4000000000000001292540 Seldovia 59.000049.40000000N151.0000 2.500000000000000W6-25-77-1 Ash K-Ar Plagioclase 6.900000000000000Sterling Formation, Clamgulchian Stage Turner et al, 1980a 59.8233333333333151.041666666667 .5000000000000001293540 Kenai 60.7167 .00000000 152.6667 .000000000000000 78AR 290DKAndesite K-Ar Whole-rock .763000000000000Dark band in banded andesite Reed, Lanphere and Miller, 1992 60.7167000000000152.666700000000 .0170000000000003493402 Kenai 60.7167 .00000000 152.6667 .000000000000000 78AR 290LTAndesite K-Ar Whole-rock .627000000000000Light band in banded andesite Reed, Lanphere and Miller, 1992 60.7167000000000152.666700000000 .0240000000000003494402 Kenai 60.7700 .00000000 152.7000 .000000000000000 90AR 99 Andesite K-Ar Whole-rock .887000000000000Estimated latitude and longitude Reed, Lanphere and Miller, 1992 60.7700000000000152.700000000000 .0150000000000003495402 Seldovia 59.000058.64500000N150.0000 9.667000000000000W92AKu 71b Granodiorite 40/39 Plateau Biotite 53.200000000000000Tustemena pluton - medium-grained, nonfoliated biotite granodiorite. Sample run by Lux. Bradley and others, 1999, 2000 59.9774166666667150.161116666667 1.10000000000000036521320 Seldovia 59.000028.40000000N150.000020.200000000000000W88ACy 9 Granodiorite 40/39 IsochronBiotite 54.200000000000000Nuka pluton - medium- to coarse-grained granodiorite containing biotite, muscovite, and rare hornblende. Sample run by Clendenen and Heizler. Bradley and others, 1999; 2000; Lytwyn and others, 2000 59.4733333333333150.336666666667 .08000000000000036531320 Seldovia 59.000023.60000000N150.000039.900000000000000W88ADw 230 Intermediate dike40/39 IsochronHornblende 57.000000000000000A leucocratic porphyry dike containing feldspar and hornblende phenocrysts that cuts the McHugh Complex near the head of Seldovia Bay. Sample run by Clendenen and Heizler.Bradley and others, 1992; 1999; 2000 59.3933333333333150.665000000000 .22000000000000036541011 Seldovia 59.000023.63000000N151.000013.117000000000000W93ASB 66 Basaltic andesite40/39 Plateau Hornblende 115.00000000000000Hornblende-phyric basaltic andesite dike cutting graywacke of McHugh Complex 4km SE of the head of Tutka Bay. Sample run by Lux. Bradley and others, 1999; 2000 59.3938333333333151.218616666667 1.70000000000000036552401 Blying Sound 59.000047.50000000N149.000059.500000000000000W91AKu 3 #1Granodiorite 40/39 Plateau Biotite 51.100000000000000Aialik pluton, Harris Bay. One of three biotite analyses. Bradley and others, 2000 59.7916666666667149.991666666667 .50000000000000036641320 Seldovia 59.000028.40000000N150.000020.200000000000000W88ACy 9 Granodiorite U-Pb Monazite 56.000000000000000Nuka pluton - medium- to coarse-grained granodiorite containing biotite, muscovite, and rare hornblende. Sample run by Parrish. Bradley and others, 2000 59.4733333333333150.336666666667 .50000000000000036741320 Seldovia 59.000052.96700000N150.000027.830000000000000W91ADw 55g Granodiorite 40/39 Plateau Biotite 54.200000000000000Chernof Stock - nonfoliated, medium-grained biotite granodiroite. Sample run by Lux. Bradley and others, 2000 59.8827833333333150.463833333333 1.10000000000000036751320 Blying Sound 59.000047.50000000N149.000059.500000000000000W91AKu 3 Granodiorite 40/39 Average Biotite 52.200000000000000Aiallik pluton - medium- to coarse-grained granodiorite. Sample run by Layer. Quadrangle incorrect in source Bradley and others, 2000 59.7916666666667149.991666666667 .90000000000000036771300 Blying Sound 59.000053.40000000N149.000022.400000000000000W95TD 2b #3Granodiorite 40/39 Plateau Biotite 53.400000000000000Hive Island pluton - granodiorite. One of three biotite analyses run by Layer. Bradley and others, 2000 59.8900000000000149.373333333333 .50000000000000036781320 Seldovia 59.000032.56700000N150.000010.833000000000000W92PH 454B Granite 40/39 Plateau Biotite 53.700000000000000Thunder Bay granitic sill, slightly disturbed spectrum Haeussler and others 1995; Bradley and others, 2000 59.5427833333333150.180550000000 .10000000000000036791320 Seldovia 59.000046.20000000N151.0000 8.000000000000000WDT75-211 Ash K-Ar Plagioclase14.100000000000000Also dated 11.7 m.y., 20-40m stratigraphically above DT75-210. Sterling Formation; age may be too old due to detrital contamination. Turner et al, 1980a 59.7700000000000151.133333333333 1.1000000000000003684540 Seldovia 59.000047.80000000N151.0000 6.500000000000000WDT75-209b Tuff K-Ar Plagioclase 8.200000000000000Also dated at 9.1 Ma. Sterling Formation; age may be too old due to detrital contamination. Turner et al, 1980a 59.7966666666667151.108333333333 .8000000000000003685540 Seldovia 59.000046.20000000N151.0000 8.000000000000000WDT75-212 Ash K-Ar Plagioclase30.100000000000000Also dated 32.2 m.y., 33m stratigraphically above DT75-211. Sterling Formation; age may be too old due to detrital contamination. Turner et al, 1980a 59.7700000000000151.133333333333 1.8000000000000003686540 Seldovia 59.000047.80000000N151.0000 6.700000000000000WDT75-206 Ash K-Ar Plagioclase 8.400000000000000Also dated at 4.6 m.y., composite of four thin beds. Sterling Formation age may be too old due to detrital contamination. Turner et al, 1980a 59.7966666666667151.111666666667 .7000000000000003687540 Seldovia 59.000047.80000000N151.0000 6.700000000000000WDT75-207 Tuff K-Ar Plagioclase 7.50000000000000024m stratigraphically higher than DT75-206. Believed to be too old due to detrital contamination. Turner et al, 1980a 59.7966666666667151.111666666667 .6000000000000003688540 Blying Sound 59.9286 .00000000N149.3242 .000000000000000W81BS 001A Metatuff K-Ar Whole Rock 54.400000000000000Map unit Kvt on Fox Island. Miller, 1984 (M.L. Silberman, USGS, unpub. data, 1982) 59.9286000000000149.324200000000 2.70000000000000036912705 Blying Sound 59.000057.18330000N149.000016.083300000000000W81BS 011A Basalt K-Ar Whole Rock 49.600000000000000 Miller, 1984 (M.L. Silberman, USGS, unpub. data, 1982) 59.9530550000000149.268055000000 2.50000000000000036921137 Blying Sound 59.000057.18330000N149.000016.083300000000000W81BS 011B Basalt K-Ar Whole Rock 45.700000000000000 Miller, 1984 (M.L. Silberman, USGS, unpub. data, 1982) 59.9530550000000149.268055000000 2.30000000000000036931137 Blying Sound 59.000053.00000000N149.000016.683300000000000W81BS 013K Basalt K-Ar Whole Rock 47.300000000000000 Miller, 1984 (M.L. Silberman, USGS, unpub. data, 1982) 59.8833333333333149.278055000000 2.40000000000000036941137 Seldovia 59.4479 .00000000N151.7145 .000000000000000W92ATi 316DSchist 40/39 Plateau White Mica 190.98000000000000Seldovia metamorphic complex, Plateau age Bradley and Karl, 2000, A. Till (per. commun., 2007) 59.4479000000000151.714500000000 .30000000000000036973610 Seldovia 59.4547 .00000000N151.7153 .000000000000000W92ATi 309BSchist 40/39 Plateau Barroisite 191.92000000000000Seldovia metamorphic complex, Plateau age, qtz-wht mica-chorite schist Bradley and Karl, 2000, A. Till (per. commun., 2007) 59.4547000000000151.715300000000 .60000000000000036983610 Seldovia 59.4547 .00000000N151.7153 .000000000000000W92ATi 309BSchist 40/39 Plateau Muscovite 191.70000000000000Seldovia metamorphic complex, Plateau age, qtz-wht mica-chorite schist Bradley and Karl, 2000, A. Till (per. commun., 2007) 59.4547000000000151.715300000000 .30000000000000036993610 Cordova 60.5890 .00000000N144.4096 .000000000000000W80ANS 148AGranitic rock K/Ar Biotite 52.700000000000000Unit Tgg south side of Miles Glacier Nelson and others, 1985 (Vivit, Gray, Silberman) 60.5890000000000144.409600000000 1.60000000000000037151300 Cordova 60.5890 .00000000N144.4096 .000000000000000W80ANS 148AGranitic rock K/Ar Hornblende 51.300000000000000Unit Tgg south side of Miles Glacier Nelson and others, 1985 (Vivit, Gray, Silberman) 60.5890000000000144.409600000000 2.90000000000000037161300 Middleton Island59.7969 .00000000N144.5864 .000000000000000W80AMH 159ADacite K/Ar Whole rock 6.200000000000000Dacite of Cape St. Elias Nelson and others, 1985 (Teledyne Isotopes) 59.7969000000000144.586400000000 .30000000000000037171053 Cordova 60.000040.57000000N145.000029.870000000000000W85APr 177 Gabbro K-Ar Hornblended48.500000000000000Altered clinopyroxene gabbro in written report, reported as hornblende gabbro on map George Plafker, written commun., 1986; Winkler and Plafker, 1993 60.6761666666667145.497833333333 1.46000000000000037241380 Cordova 60.0000 0.00000000N144.000011.750000000000000W72APr 22A1Diorite K-Ar Hornblende 200.50000000000000Recalculated with constants of Steiger and Jager (1977) Plafker, written communication, 1986 60.0000000000000144.19583333333329.00000000000000037251300 Seldovia 59.000019.17000000N151.000017.500000000000000Wn.a. Felsic dike 40/39 White mica 57.300000000000000Port Dick prospect, hydrothermal alteration preferred date from single step (1000 degrees C) and 67.8 percent of gas Haeussler and others, 1995 59.3195000000000151.291666666667 .1000000000000003727 Seldovia 59.000032.35000000N150.000028.680000000000000W Not reported 40/39 Plateau Sericite 55.600000000000000Valdez Group, Beauty Bay Mine, altered rock, clear sericite Haeussler and others, 1995 59.5391666666667150.478000000000 .1000000000000003728 Seldovia 59.000032.35000000N150.000028.680000000000000W Not reported 40/39 Sericite 55.900000000000000Valdez Group, Beauty Bay Mine, altered rocks, gold-colored sericite. Preferred date based on 37.2 percent of gas, disturbed spectra Haeussler and others, 1995 59.5391666666667150.478000000000 .1000000000000003729 Seldovia 59.000032.56700000N150.000010.800000000000000W Vein 40/39 Plateau White mica 52.900000000000000Thunder Bay gold occurrence, polymetalllic gold-sulfide vein Haeussler and others, 1995 59.5427833333333150.180000000000 .1000000000000003730 Blying Sound 59.000047.50000000N149.000059.500000000000000W91AKu 3 #2Granodiorite 40/39 Plateau Biotite 53.500000000000000Aialik pluton, Harris Bay. One of three biotite analyses. Bradley and others, 2000 59.7916666666667149.991666666667 .50000000000000037411320 Blying Sound 59.000047.50000000N149.000059.500000000000000W91AKu 3 #3Granodiorite 40/39 Plateau Biotite 49.600000000000000Aialik pluton, Harris Bay. One of three biotite analyses. Bradley and others, 2000 59.7916666666667149.991666666667 1.70000000000000037421320 Blying Sound 59.000053.40000000N149.000022.400000000000000W95TD 2b #2Granodiorite 40/39 Plateau Biotite 53.500000000000000Hive Island pluton - granodiorite. One of three biotite analyses run by Layer. Bradley and others, 2000 59.8900000000000149.373333333333 1.00000000000000037431320 Blying Sound 59.000053.40000000N149.000022.400000000000000W95TD 2b #1Granodiorite 40/39 Plateau Biotite 53.300000000000000Hive Island pluton - granodiorite. One of three biotite analyses run by Layer. Bradley and others, 2000 59.8900000000000149.373333333333 .60000000000000037441320 Blying Sound 59.000053.40000000N149.000022.400000000000000W95TD 2b Granodiorite 40/39 Average Biotite 53.400000000000000Hive Island pluton - granodiorite. Weighted mean of three biotite analyses run by Layer. Bradley and others, 2000 59.8900000000000149.373333333333 .40000000000000037451320 Seldovia 59.000042.50000000N150.0000 8.100000000000000WPaguna Granodiorite 40/39 Plateau n.a. 53.400000000000000Paguna stock, approximate location. Bradley and others, 1999 59.7083333333333150.135000000000 1.50000000000000037461320 Seldovia 59.000027.70000000N151.000042.400000000000000W74AF23-10 Schist K-Ar Amphibole 188.30000000000000Replicate analysis, Amphibole-mica schist, approximate location, 1976 constants Carden et al, 1977 59.4616666666667151.706666666667 5.50000000000000037473610 Seldovia 59.000020.58000000N151.000049.270000000000000W90ADW 809 Andesite 40/39 Plateau Amphibole 58.640000000000000Andesite dike, might have intruded Port Graham formation near Port Graham Lytwyn and others, 2000 59.3430000000000151.821166666667 .52000000000000037481320