{"text_format":"dbase-jsonl-2026-09-30","columns":[{"name":"SAMPLE","type":"character","width":21},{"name":"NSACLASS","type":"number","width":4,"decimals":0},{"name":"QUAD","type":"character","width":15},{"name":"LATITUDE","type":"number","width":16,"decimals":13},{"name":"LONGITUDE","type":"number","width":16,"decimals":12},{"name":"ROCK_TYPE","type":"character","width":19},{"name":"METHOD","type":"character","width":18},{"name":"MINERAL","type":"character","width":11},{"name":"AGE","type":"number","width":7,"decimals":4},{"name":"ERROR","type":"number","width":18,"decimals":15},{"name":"COMMENT","type":"character","width":153},{"name":"REFERENCE","type":"character","width":131},{"name":"LATDEG","type":"number","width":3,"decimals":0},{"name":"LATMIN","type":"number","width":18,"decimals":15},{"name":"LATDIR","type":"character","width":1},{"name":"LONGDEG","type":"number","width":3,"decimals":0},{"name":"LONGMIN","type":"number","width":18,"decimals":15},{"name":"LONGDIR","type":"character","width":1},{"name":"REC_NO","type":"number","width":4,"decimals":0}],"n_rows":183,"rows_kept":183,"cut":false,"deleted_skipped":0,"read_ended":"whole","bounds":"16MiB/16384/4096/first_that_fit","version":"dbase_level_three","encoding_class":"enc_absent","reader":"statdb_count/9"}
["55ATr109",null,"Ambler River",67.0550000000000,157.206666666667,"Schist","K-Ar","TR",314.000,0,"Tremolite schist (76161)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,3.300000000000000,"N",157,12.400000000000000,"W",3919]
["75AWM15031",null,"Ambler River",67.1600000000000,156.391666666667,"Schist","K-Ar","Muscovite",109.000,0,"Quartz-muscovite-schist, (76002)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,9.600000000000000,"N",156,23.500000000000000,"W",3920]
["75AWM1502",null,"Ambler River",67.1666666666667,156.383333333333,"Schist","K-Ar","Actinolite",398.000,0,"(75141) Actinolite-schist, age recalculated with 1976 constants","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,10.000000000000000,"N",156,23.000000000000000,"W",3921]
["75AWM15353",null,"Ambler River",67.1733333333333,156.380000000000,"Schist","K-Ar","Biotite",116.000,0,"Feldspar-schist, (75077)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,10.400000000000000,"N",156,22.800000000000000,"W",3922]
["75AWM15353",null,"Ambler River",67.1733333333333,156.380000000000,"Schist","K-Ar","Muscovite",120.000,0,"Feldspar-schist, (75046)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,10.400000000000000,"N",156,22.800000000000000,"W",3923]
["73ATr105.4",null,"Ambler River",67.1783333333333,156.376666666667,"Schist","K-Ar","Biotite",105.000,0,"Biotite-muscovite-feldspar-schist (74091)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,10.700000000000000,"N",156,22.600000000000000,"W",3924]
["73ATr105.4",null,"Ambler River",67.1783333333333,156.376666666667,"Schist","K-Ar","Muscovite",115.000,0,"Biotite-muscovite-feldspar-schist, (75079)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,10.700000000000000,"N",156,22.600000000000000,"W",3925]
["75AWM1500",null,"Ambler River",67.1833333333333,156.376666666667,"Schist","K-Ar","Muscovite",163.000,0,"Feldspar-schist, (76010)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,11.000000000000000,"N",156,22.600000000000000,"W",3926]
["75AWM15011",null,"Ambler River",67.1833333333333,156.376666666667,"Schist","K-Ar","Muscovite",120.000,0,"75AWM1501.1, feldspar-schist","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,11.000000000000000,"N",156,22.600000000000000,"W",3927]
["73RR45C",null,"Ambler River",67.2000000000000,156.710000000000,"Schist","K-Ar","Actinolite",163.000,0,"Actinolite-schist, (76077)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,12.000000000000000,"N",156,42.600000000000000,"W",3928]
["75AWM17455",null,"Ambler River",67.2033333333333,156.370000000000,"SKARN","K-Ar","Actinolite",246.000,0,"Actinolite-skarn, (75048)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,12.200000000000000,"N",156,22.200000000000000,"W",3929]
["AR-ISO1",null,"Ambler River",67.2033333333333,156.775000000000,"Schist","K-Ar","IC",1290.00,0,"Glaucophane, samples A-1, A-2, A-3, C-2","Hartman, 1974,  Grybeck et al, 1977",67,12.200000000000000,"N",156,46.500000000000000,"W",3930]
["AR-ISO2",null,"Ambler River",67.2033333333333,156.775000000000,"Schist","K-Ar","IC",213.000,0,"Garnet-glaucophane-schist ,samples A-2,A-3 and 72F10ARGII (Survey Pass quad)","Hartman, 1974, Grybeck et al, 1977",67,12.200000000000000,"N",156,46.500000000000000,"W",3931]
["C-2",null,"Ambler River",67.2083333333333,156.658333333333,"Schist","K-Ar","GP",1341.00,0,"Approx. loc., garnet-glaucophane-schist (72125), 1976 constants, excess Ar","Hartman,1974, Grybeck et al,1977, Turner et al,1978,1979a, Mayfield et al, 1983",67,12.500000000000000,"N",156,39.500000000000000,"W",3932]
["73RR10-1C",null,"Ambler River",67.2150000000000,156.691666666667,"Schist","K-Ar","Muscovite",131.000,0,"Quartz-muscovite-schist, (75083)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,12.900000000000000,"N",156,41.500000000000000,"W",3933]
["73RR7G",null,"Ambler River",67.2200000000000,156.693333333333,"Schist","K-Ar","GP",597.000,0,"Glaucophane-quartz-muscovite-schist, (75001)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,13.200000000000000,"N",156,41.600000000000000,"W",3934]
["73RR7G",null,"Ambler River",67.2200000000000,156.693333333333,"Schist","K-Ar","Muscovite",128.000,0,"Glaucophane-quartz-muscovite-schist, (75002)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,13.200000000000000,"N",156,41.600000000000000,"W",3935]
["72E56B",null,"Ambler River",67.2233333333333,156.641666666667,"Schist","K-Ar","Muscovite",184.000,0,"Biotite-muscovite-schist, (73057)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,13.400000000000000,"N",156,38.500000000000000,"W",3936]
["73RR6EF",null,"Ambler River",67.2233333333333,156.696666666667,"Schist","K-Ar","Biotite",105.000,0,"Mean of 2 determinations, (75129), (75126)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,13.400000000000000,"N",156,41.800000000000000,"W",3937]
["73RR6EF",null,"Ambler River",67.2233333333333,156.696666666667,"Schist","K-Ar","Muscovite",115.000,0,"Biotite-feldspar-quartz-muscovite-schist, (75039)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,13.400000000000000,"N",156,41.800000000000000,"W",3938]
["73RR18F",null,"Ambler River",67.2250000000000,156.725000000000,"Schist","K-Ar","Biotite",132.000,0,"Biotite-quartz-muscovite-schist, (74183)","Turner et al, 1978, 1979a, Mayfield et al, 1983, Armstrong et al, 1986",67,13.500000000000000,"N",156,43.500000000000000,"W",3939]
["73RR18F",null,"Ambler River",67.2250000000000,156.725000000000,"Schist","K-Ar","Muscovite",130.000,0,"Biotite-quartz-muscovite-schist, (75052)","Turner et al, 1978, 1979a, Mayfield et al, 1983, Armstrong et al, 1986",67,13.500000000000000,"N",156,43.500000000000000,"W",3940]
["A-1",null,"Ambler River",67.2250000000000,156.733333333333,"Schist","K-Ar","GP",2531.00,0,"Approx. loc.,mean of 3 determinations, possible inherited Ar, 1976 constants","Hartman,1974; Grybeck et al,1977; Turner et al,1978; 1979a; Mayfield et al, 1983",67,13.500000000000000,"N",156,44.000000000000000,"W",3941]
["A-1CNM",null,"Ambler River",67.2250000000000,156.733333333333,"Schist","K-Ar","PA",240.000,0,"Approx. loc.,garnet-glaucophane-schist, (72146), add'l ref. Mayfield et al, 1983","Hartman, 1974, Grybeck et al, 1977, Pessel et al, 1973, Turner et al,1978,1979a",67,13.500000000000000,"N",156,44.000000000000000,"W",3942]
["A-3",null,"Ambler River",67.2250000000000,156.733333333333,"Schist","K-Ar","GP",1436.00,0,"Jadeite-garnet-glaucophane-schist (72129), 1976 constants, excess Ar","Hartman,1974, Grybeck et al,1977, Turner et al,1978,1979a, Mayfield et al, 1983",67,13.500000000000000,"N",156,44.000000000000000,"W",3943]
["A-3",null,"Ambler River",67.2250000000000,156.733333333333,"Schist","K-Ar","PA",221.700,0,"Jadeite-garnet-glaucophane-schist (72163), age recalc. with 1976 constants","Hartman,1974, Grybeck et al,1977, Pessel et al,1973, Turner et al,1978,1979a",67,13.500000000000000,"N",156,44.000000000000000,"W",3944]
["A-2",null,"Ambler River",67.2250000000000,156.775000000000,"Schist","K-Ar","GP",1279.00,0,"Excess Ar","Hartman,1974, Grybeck et al,1977, Turner et al,1978,1979a, Mayfield et al,1983",67,13.500000000000000,"N",156,46.500000000000000,"W",3945]
["A-2",null,"Ambler River",67.2250000000000,156.775000000000,"Schist","K-Ar","PA",218.300,0,"Garnet-glaucophane-schist, (72162), add'l ref. Mayfield et al, 1983","Hartman,1974, Grybeck et al,1977, Pessel et al,1973, Turner et al,1978,1979a",67,13.500000000000000,"N",156,46.500000000000000,"W",3946]
["72Pe92",null,"Ambler River",67.2266666666667,156.116666666667,"GNS","K-Ar","Biotite",88.8000,0,"Mean of 2 determinations, (73060), (74002)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,13.600000000000000,"N",156,7.000000000000000,"W",3947]
["72Pe92",null,"Ambler River",67.2266666666667,156.116666666667,"GNS","K-Ar","Muscovite",116.000,0,"(73059)","Turner et al, 1978, 1979a, Mayfield et al, 1983, Armstrong et al, 1986",67,13.600000000000000,"N",156,7.000000000000000,"W",3948]
["72Pe92",null,"Ambler River",67.2266666666667,156.116666666667,"GNS","R","Muscovite",99.0000,0,"Biotite muscovite augen gneiss","Armstrong et al, 1986",67,13.600000000000000,"N",156,7.000000000000000,"W",3949]
["73RR31C",null,"Ambler River",67.2300000000000,156.765000000000,"Schist","K-Ar","GP",566.000,0,"Impure glaucophane, minimum age, glaucophane schist (75028), 1976 constants","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,13.800000000000000,"N",156,45.900000000000000,"W",3950]
["73RR54",null,"Ambler River",67.2450000000000,156.683333333333,"Schist","K-Ar","GP",1690.00,0,"Inherited argon, mean of 2 determinations (75020),(75023), 1976 contants","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,14.700000000000000,"N",156,41.000000000000000,"W",3951]
["73RR52",null,"Ambler River",67.2500000000000,156.676666666667,"Schist","K-Ar","GP",636.000,0,"Mean of 2 determinations (75019),(75025), age recalc. with 1976 constants","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,15.000000000000000,"N",156,40.600000000000000,"W",3952]
["74AWM309",null,"Ambler River",67.3016666666667,156.700000000000,"Schist","K-Ar","Actinolite",437.000,0,"Actinolite-quartz-chlorite-schist (75058), age recalc. with 1976 constants","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,18.100000000000000,"N",156,42.000000000000000,"W",3953]
["73RR75-3",null,"Ambler River",67.3066666666667,156.700000000000,"Schist","K-Ar","Actinolite",352.000,0,"Impure actinolite, minimum age, actinolite-schist (76197)","Turner et al, 1978, 1979a, Mayfield et al, 1983",67,18.400000000000000,"N",156,42.000000000000000,"W",3954]
["72E222",null,"Ambler River",67.3183333333333,156.130000000000,"GNS","K-Ar","Biotite",95.9000,0,"(73058)","Turner et al, 1978, 1979a, Mayfield et al, 1983, Armstrong et al,1986",67,19.100000000000000,"N",156,7.800000000000000,"W",3955]
["72E222",null,"Ambler River",67.3183333333333,156.130000000000,"GNS","K-Ar","Muscovite",100.300,0,"(73055)","Turner et al, 1978, 1979a, Mayfield et al, 1983, Armstrong et al, 1986",67,19.100000000000000,"N",156,7.800000000000000,"W",3956]
["72E222",null,"Ambler River",67.3183333333333,156.130000000000,"GNS","R","IC",96.0000,0,"Coarse flaser granitic gneiss, biotite and muscovite","Armstrong et al, 1986",67,19.100000000000000,"N",156,7.800000000000000,"W",3957]
["72E100R",null,"Ambler River",67.3383333333333,157.018333333333,"Schist","K-Ar","Muscovite",129.000,0,"Quartz-muscovite-schist (73056)","Turner et al, 1978, 1979a, Mayfield et al, 1983, Armstrong et al, 1986",67,20.300000000000000,"N",157,1.100000000000000,"W",3958]
["60ATr134",null,"Ambler River",67.4000000000000,156.333333333333,"Granodiorite","K-Ar","Muscovite",101.300,2.200000000000000,"Meta-granite, add'l ref. Mayfield et al, 1983","Pessel et al, 1973, Pessel and Brosge, 1977, Turner et al, 1978, 1979a",67,24.000000000000000,"N",156,20.000000000000000,"W",3959]
["75ATr142.2",null,"Ambler River",67.5716666666667,156.195000000000,"Amphibolite","K-Ar","Hornblende",391.000,0,null,"Mayfield et al, 1983",67,34.300000000000000,"N",156,11.700000000000000,"W",3960]
["76ATr75b",null,"Ambler River",67.7350000000000,157.648333333333,"OTHER","K-Ar","Muscovite",434.000,0,"Possible minimum age of detrital muscovite in feldspathic wacke","Mayfield et al, 1983",67,44.100000000000000,"N",157,38.900000000000000,"W",3961]
["74ABe222F",null,"Baird Mountains",67.0133333333333,160.083333333333,"Schist","K-Ar","PP",100.100,0,"(75091), age recalculated with 1976 constants","Turner et al, 1978, 1979a",67,0.8,"N",160,5.000000000000000,"W",3962]
["74Pe2B",null,"Baird Mountains",67.0383333333333,160.166666666667,"GNS","K-Ar","Biotite",95.9000,0,"Biotite-muscovite-gneiss (75115), age recalculated with 1976 constants","Turner et al, 1978, 1979a",67,2.300000000000000,"N",160,10.000000000000000,"W",3963]
["74Pe2B",null,"Baird Mountains",67.0383333333333,160.166666666667,"GNS","K-Ar","Muscovite",107.000,0,"Biotite-muscovite-gneiss (75124), age recalc. with 1976 constants","Turner et al, 1978, 1979a, Armstrong et al, 1986",67,2.300000000000000,"N",160,10.000000000000000,"W",3964]
["74ATr150.3",null,"Baird Mountains",67.0600000000000,160.150000000000,"Schist","K-Ar","Biotite",113.000,0,"Biotite-muscovite-feldspar-schist(75117), age recalc. with 1976 constants","Turner et al, 1978, 1979a",67,3.600000000000000,"N",160,9.000000000000000,"W",3965]
["74ATr150.3",null,"Baird Mountains",67.0600000000000,160.150000000000,"Schist","K-Ar","Muscovite",114.000,0,"Age recalculated with 1976 constants","Turner et al, 1978, 1979a",67,3.600000000000000,"N",160,9.000000000000000,"W",3966]
["66APa129",null,"Baird Mountains",67.1250000000000,159.758333333333,"TUFF","K-Ar","Biotite",85.4000,0,"Age recalculated with 1976 constants","Patton and Miller,1968,Grybeck et al,1977,Turner et al,1978,1979a,Patton,1973",67,7.500000000000000,"N",159,45.500000000000000,"W",3967]
["66ATr39",null,"Baird Mountains",67.1700000000000,160.405000000000,"Schist","K-Ar","Muscovite",125.000,0,"Age recalculated with 1976 constants","Grybeck et al, 1977, Mayfield, 1975, Turner et al, 1978, 1979a",67,10.200000000000000,"N",160,24.300000000000000,"W",3968]
["74AF144-3",null,"Baird Mountains",67.1716666666667,160.108333333333,"Schist","K-Ar","Actinolite",632.000,0,"Amphibole-schist (74125), 1976 constants, possible excess Ar","Turner et al, 1978, 1979a, Armstrong et al, 1986",67,10.300000000000000,"N",160,6.500000000000000,"W",3969]
["74Pe121",null,"Baird Mountains",67.2666666666667,160.230000000000,"Schist","K-Ar","Muscovite",121.000,0,"Quartz-muscovite-schist (75090), age recalculated with 1976 constants","Turner et al, 1978, 1979a",67,16.000000000000000,"N",160,13.800000000000000,"W",3970]
["74ATr129.7",null,"Baird Mountains",67.2950000000000,160.216666666667,"Greenschist","K-Ar","Actinolite",660.000,0,"(75082), 1976 constants, possible excess Ar","Turner et al, 1978, 1979a, Armstrong et al, 1986",67,17.700000000000000,"N",160,13.000000000000000,"W",3971]
["74AF155-13",null,"Baird Mountains",67.4116666666667,160.291666666667,"Schist","K-Ar","GP",767.000,0,"Quartz-paragonite-glaucophane-schist,(75017),(74121),1976 constants, possible excess Ar","Turner et al, 1978, 1979a, Armstrong et al, 1986",67,24.700000000000000,"N",160,17.500000000000000,"W",3972]
["74AF155-13",null,"Baird Mountains",67.4116666666667,160.291666666667,"Schist","K-Ar","PA",199.000,0,"Quartz-paragonite-glaucophane-schist (74129),(75044),1976 constants","Turner et al, 1978, 1979a",67,24.700000000000000,"N",160,17.500000000000000,"W",3973]
["74ABe21B",null,"Baird Mountains",67.4600000000000,159.691666666667,"Greenschist","K-Ar","Actinolite",320.000,0,"(75097), age recalculated with 1976 constants","Turner et al, 1978, 1979a",67,27.600000000000000,"N",159,41.500000000000000,"W",3974]
["81ATr183f",null,"Baird Mountains",67.6333333333333,159.571666666667,"Marble","K-Ar","Mica",515.000,0,"Teledyne Isotopes, geol. suspect, same unit as 81ATr 186f, micaceous marble","Ellersieck, per. comm.,1984",67,38.000000000000000,"N",159,34.300000000000000,"W",3975]
["81ATr187f",null,"Baird Mountains",67.6500000000000,159.580000000000,"Metabasite","K-Ar","Amphibole",188.000,0,"Geologically suspect, metabasite dike in marble, replicate.","Ellersieck, pers. comm., 1984",67,39.000000000000000,"N",159,34.800000000000000,"W",3976]
["81ATr187f",null,"Baird Mountains",67.6500000000000,159.580000000000,"Metabasite","K-Ar","Amphibole",172.000,0,"Geologically suspect, metabasite dike in marble, replicate.","Ellersieck, pers. comm., 1984",67,39.000000000000000,"N",159,34.800000000000000,"W",3977]
["74AF145-1",null,"Baird Mountains",67.6500000000000,160.153333333333,"Schist","K-Ar","Muscovite",646.000,0,"Muscovite-schist (74122), metasediment, mean of 2 determinations","Turner et al, 1978, 1979a, Mayfield et al, 1982, Armstrong et al, 1986, Till, 1989",67,39.000000000000000,"N",160,9.200000000000000,"W",3978]
["74AF145-5",null,"Baird Mountains",67.6500000000000,160.153333333333,"Schist","K-Ar","Hornblende",729.000,0,"Amphibole-schist (74124), metabasite","Turner et al, 1978, 1979a, Mayfield et al, 1982,  Turner et al, 1978, Armstrong et al, 1986, Till, 1989",67,39.000000000000000,"N",160,9.200000000000000,"W",3979]
["74AF145-1",null,"Baird Mountains",67.6500000000000,160.153333333333,"Schist","R","OT",1026.00,0,"Whole rock-muscovite pair","Armstrong et al, 1986",67,39.000000000000000,"N",160,9.200000000000000,"W",3980]
["74AF145",null,"Baird Mountains",67.6500000000000,160.153333333333,"Schist","R","IC",686.000,0,"Meta sedimentary musc. schist (74AF145-1) and amphibole schist (74AF145-5)","Armstrong et al, 1986",67,39.000000000000000,"N",160,9.200000000000000,"W",3981]
["74AF145-1",null,"Baird Mountains",67.6500000000000,160.153333333333,"Schist","R","Whole-rock",645.000,0,"Model date assuming Sr=0.705","Armstrong et al, 1986, Till, 1989",67,39.000000000000000,"N",160,9.200000000000000,"W",3982]
["74AF145-1",null,"Baird Mountains",67.6500000000000,160.153333333333,"Schist","R","Mica",770.000,0,"Model date assuming Sr=0.705","Armstrong et al, 1986, Till, 1989",67,39.000000000000000,"N",160,9.200000000000000,"W",3983]
["81ATr186f",null,"Baird Mountains",67.6550000000000,159.613333333333,"Marble","K-Ar",null,134.000,0,"Teledyne Isotopes, geol. suspect, same unit as 81ATr183f, micaceous marble","Ellersieck, pers. comm., 1984",67,39.300000000000000,"N",159,36.800000000000000,"W",3984]
["76Md276EX",null,"Baird Mountains",67.6766666666667,159.206666666667,"Amphibolite","K-Ar","Hornblende",595.000,0,"Garnet amphibolite, metabasite, Hub Mtn.","Mayfield et al, 1982, Armstrong et al, 1986, Till, 1989",67,40.600000000000000,"N",159,12.400000000000000,"W",3985]
["78Md121",null,"Baird Mountains",67.6850000000000,159.160000000000,"Schist","K-Ar","Muscovite",594.000,0,"Quartz-mica schist, metasediment","Mayfield et al, 1982, Armstrong et al, 1986, Till, 1989",67,41.100000000000000,"N",159,9.600000000000000,"W",3986]
["76Md250HX",null,"Baird Mountains",67.7050000000000,159.173333333333,"Diorite","K-Ar","Hornblende",548.000,0,"Metamorphosed rock, minimum age, mean of 2 determinations","Mayfield et al, 1982, Armstrong et al, 1986, Till, 1989",67,42.300000000000000,"N",159,10.400000000000000,"W",3987]
["84DN156a",2492,"Chandalar",67.0083333333333,149.780000000000,"Granodiorite","K-Ar","Biotite",107.000,0,"Hodzana pluton","Blum et al, 1987",67,0.5,"N",149,46.800000000000000,"W",3988]
["84DN156a",2492,"Chandalar",67.0083333333333,149.780000000000,"Granodiorite","K-Ar","Hornblende",108.000,0,"Hodzana pluton","Blum et al, 1987",67,0.5,"N",149,46.800000000000000,"W",3989]
["84DN155b",2492,"Chandalar",67.0116666666667,149.786666666667,"Granite","K-Ar","Biotite",105.000,0,"Hodzana pluton","Blum et al, 1987",67,0.7,"N",149,47.200000000000000,"W",3990]
["84DN155b",2492,"Chandalar",67.0116666666667,149.786666666667,"Granite","K-Ar","Hornblende",106.000,0,"Hodzana pluton","Blum et al, 1987",67,0.7,"N",149,47.200000000000000,"W",3991]
["84DN157",2492,"Chandalar",67.0166666666667,149.688333333333,"Monzodiorite","K-Ar","Biotite",107.000,0,"Hodzana pluton","Blum et al, 1987",67,1.000000000000000,"N",149,41.300000000000000,"W",3992]
["84DN157",2492,"Chandalar",67.0166666666667,149.688333333333,"Monzodiorite","K-Ar","Hornblende",103.000,0,"Hodzana pluton","Blum et al, 1987",67,1.000000000000000,"N",149,41.300000000000000,"W",3993]
["240B",2492,"Chandalar",67.0166666666667,149.825000000000,"Granodiorite","K-Ar","Biotite",104.000,0,"Hodzana pluton, age recalculated with 1976 constants","Brosge' and Reiser, 1964,  Grybeck et al, 1977, Sable, 1977",67,1.000000000000000,"N",149,49.500000000000000,"W",3994]
["240Z",2492,"Chandalar",67.0166666666667,149.825000000000,"Granodiorite","A","Zircon",140.000,0,null,"Brosge' and Reiser, 1964,  Grybeck et al, 1977, Sable, 1977",67,1.000000000000000,"N",149,49.500000000000000,"W",3995]
["84DN160",2492,"Chandalar",67.0400000000000,149.815000000000,"Monzodiorite","K-Ar","Biotite",104.000,0,"Hodzana pluton","Blum et al, 1987",67,2.400000000000000,"N",149,48.900000000000000,"W",3996]
["84DN160",2492,"Chandalar",67.0400000000000,149.815000000000,"Monzodiorite","K-Ar","Hornblende",110.000,0,"Hodzana pluton","Blum et al, 1987",67,2.400000000000000,"N",149,48.900000000000000,"W",3997]
["239B",null,"Chandalar",67.5833333333333,148.633333333333,"Schist","K-Ar","Biotite",106.000,0,"Chandalar pluton, age recalculated with 1976 constants","Brosge' and Reiser, 1964,  Grybeck et al, 1977, Sable, 1977",67,35.000000000000000,"N",148,38.000000000000000,"W",3998]
["239M",null,"Chandalar",67.5833333333333,148.633333333333,"Schist","K-Ar","Muscovite",102.000,0,"Chandalar pluton, age recalculated with 1976 constants","Brosge' and Reiser, 1964,  Grybeck et al, 1977, Sable, 1977",67,35.000000000000000,"N",148,38.000000000000000,"W",3999]
["241B",null,"Chandalar",67.6083333333333,148.616666666667,"Granite","K-Ar","Biotite",128.000,0,"Age recalculated with 1976 constants","Brosge' and Reiser, 1964,  Grybeck et al, 1977, Sable, 1977",67,36.500000000000000,"N",148,37.000000000000000,"W",4000]
["241Z",null,"Chandalar",67.6083333333333,148.616666666667,"Granite","A","Zircon",380.000,0,null,"Brosge' and Reiser, 1964, Grybeck et al, 1977, Sable, 1977, Dillon, 1985",67,36.500000000000000,"N",148,37.000000000000000,"W",4001]
["Chandalar1",null,"Chandalar",67.6333333333333,149.333333333333,"Granodiorite","K-Ar","Hornblende",297.000,0,"Conflicting ages, same sample","Grybeck et al, 1977",67,38.000000000000000,"N",149,20.000000000000000,"W",4002]
["Chandalar1",null,"Chandalar",67.6333333333333,149.333333333333,"Granodiorite","K-Ar","Hornblende",495.000,0,"Conflicting ages, same sample","Grybeck et al, 1977",67,38.000000000000000,"N",149,20.000000000000000,"W",4003]
["49ATr511",null,"Chandler Lake",68.4700000000000,152.750000000000,"Diabase","K-Ar","Plagioclase",186.200,24.000000000000000,"Corrected with new constants","Grybeck et al, 1977",68,28.200000000000000,"N",152,45.000000000000000,"W",4004]
["63ARr151",null,"Christian",67.4666666666667,145.516666666667,"Gabbro","K-Ar","Hornblende",172.000,0,null,"Reiser et al, 1965, Grybeck et al, 1977, Patton et al, 1977",67,28.000000000000000,"N",145,31.000000000000000,"W",4005]
["63ABe202",null,"Christian",67.5000000000000,145.750000000000,"Diorite","K-Ar","Plagioclase",159.000,0,null,"Reiser et al, 1965, Grybeck et al, 1977, Patton et al, 1977",67,30.000000000000000,"N",145,45.000000000000000,"W",4006]
["77AMs12",null,"Survey Pass",67.0466666666667,155.021666666667,"Schist","R","Whole-rock",220.000,0,"Metarhyolite","Nelson and Grybeck, 1980",67,2.800000000000000,"N",155,1.300000000000000,"W",4007]
["77AMs12A",null,"Survey Pass",67.0516666666667,155.021666666667,"Schist","R","Whole-rock",215.000,0,"Metarhyolite","Nelson and Grybeck, 1980",67,3.100000000000000,"N",155,1.300000000000000,"W",4008]
["77AMs13",null,"Survey Pass",67.0516666666667,155.021666666667,"Schist","R","Whole-rock",207.000,0,"Metarhyolite","Nelson and Grybeck, 1980",67,3.100000000000000,"N",155,1.300000000000000,"W",4009]
["SUR3",null,"Survey Pass",67.0516666666667,155.021666666667,"Schist","R","IC",214.000,0,"Samples 77AMs11B, 12A, 13, and 12, metarhyolite","Nelson and Grybeck, 1980",67,3.100000000000000,"N",155,1.300000000000000,"W",4010]
["77AMs11B",null,"Survey Pass",67.0616666666667,155.021666666667,"Schist","R","Whole-rock",214.000,0,null,"Nelson and Grybeck, 1980",67,3.700000000000000,"N",155,1.300000000000000,"W",4011]
["72F10ARGII",null,"Survey Pass",67.0833333333333,155.916666666667,"Schist","K-Ar","Actinolite",293.700,0,"Mean of 2 determinations, 1976 constants, Nelson and Grybeck, 1980","Hartman,1974, Pessel et al,1973, Grybeck et al,1977, Turner et al,1978,1979a",67,5.000000000000000,"N",155,55.000000000000000,"W",4012]
["72F10ARGII",null,"Survey Pass",67.0833333333333,155.916666666667,"Schist","K-Ar","IC",213.000,0,"Paragonite-actinolite, isochron with samples A-1, A-2, A-3(Ambler River quad.)","Hartman, 1974,  Grybeck et al, 1977",67,5.000000000000000,"N",155,55.000000000000000,"W",4013]
["73B33",null,"Survey Pass",67.0866666666667,155.020000000000,"Schist","R","OT",112.000,0,"Whole rock-mineral (MU) pair, muscovite feldspar schist","Armstrong et al, 1986",67,5.200000000000000,"N",155,1.200000000000000,"W",4014]
["73B33",null,"Survey Pass",67.0883333333333,155.016666666667,"Schist","K-Ar","Muscovite",112.000,0,"Muscovite-feldspar-schist (74085), age recalc. with 1976 constants","Turner et al, 1978, 1979a, Nelson and Grybeck, 1980, Armstrong et al, 1986",67,5.300000000000000,"N",155,1.000000000000000,"W",4015]
["75AWM3",null,"Survey Pass",67.1033333333333,155.213333333333,"GNS","K-Ar","Biotite",103.000,0,"Biotite-muscovite-feldspar-gneiss (76028), age recalc. with 1976 constants","Turner et al, 1978, 1979a, Nelson and Grybeck, 1980",67,6.200000000000000,"N",155,12.800000000000000,"W",4016]
["75AWM3",null,"Survey Pass",67.1033333333333,155.213333333333,"GNS","K-Ar","Muscovite",118.000,0,"Biotite-muscovite-feldspar-gneiss (76028), age recalc. with 1976 constants","Turner et al, 1978, 1979a, Nelson and Grybeck, 1980",67,6.200000000000000,"N",155,12.800000000000000,"W",4017]
["73ATr15.2",null,"Survey Pass",67.1033333333333,155.316666666667,"Schist","R","IC",103.000,0,"Biotite and muscovite","Armstrong et al, 1986",67,6.200000000000000,"N",155,19.000000000000000,"W",4018]
["73ATr15.2",null,"Survey Pass",67.1050000000000,155.300000000000,"Schist","K-Ar","Biotite",105.000,0,"Biotite-muscovite-feldspar-schist (74182), age recalc. with 1976 constants","Turner et al, 1978, 1979a, Nelson and Grybeck, 1980, Armstrong et al, 1986",67,6.300000000000000,"N",155,18.000000000000000,"W",4019]
["73ATr15.2",null,"Survey Pass",67.1050000000000,155.300000000000,"Schist","K-Ar","Muscovite",118.000,0,"Biotite-muscovite-feldspar-schist (75051), age recalc. with 1976 constants","Turner et al, 1978, 1979, Nelson and Grybeck, 1980, Armstrong et al, 1986",67,6.300000000000000,"N",155,18.000000000000000,"W",4020]
["73ATr45.2",null,"Survey Pass",67.1116666666667,155.400000000000,"Greenschist","K-Ar","Actinolite",173.000,0,"(74179), mean of 2 determinations, 1976 constants","Turner et al, 1978, 1979a, Nelson and Grybeck, 1980",67,6.700000000000000,"N",155,24.000000000000000,"W",4021]
["73ATr45.2",null,"Survey Pass",67.1116666666667,155.400000000000,"Greenschist","K-Ar","Muscovite",117.000,0,"Impure muscovite, minimum age (75068), age recalc. with 1976 constants","Turner et al, 1978, 1979a, Nelson and Grybeck, 1980",67,6.700000000000000,"N",155,24.000000000000000,"W",4022]
["73G64",null,"Survey Pass",67.1166666666667,155.410000000000,"Schist","K-Ar","TR",205.800,0,"Recalc. with 1976 constants","Turner et al, 1979a",67,7.000000000000000,"N",155,24.600000000000000,"W",4023]
["73ATr20.2",null,"Survey Pass",67.1383333333333,153.933333333333,"Schist","R","OT",60.0000,0,"Whole rock-mineral (MU) pair, quartz muscovite schist","Armstrong et al, 1986",67,8.300000000000000,"N",153,56.000000000000000,"W",4024]
["73ATr20.2",null,"Survey Pass",67.1416666666667,153.938333333333,"Schist","K-Ar","Muscovite",115.000,0,"Quartz-muscovite-schist (74084), age recalc. with 1976 constants","Turner et al, 1978, 1979a, Nelson and Grybeck, 1980, Armstrong et al, 1986",67,8.500000000000000,"N",153,56.300000000000000,"W",4025]
["73ABe58",null,"Survey Pass",67.1683333333333,155.211666666667,"Schist","K-Ar","Muscovite",109.000,0,"Muscovite-feldspar-schist (74137), age recalc. with 1976 constants","Turner et al, 1978, 1979a, Nelson and Grybeck, 1980",67,10.100000000000000,"N",155,12.700000000000000,"W",4026]
["73Pe32",null,"Survey Pass",67.1800000000000,153.983333333333,"Schist","K-Ar","Muscovite",139.000,0,"Calc-muscovite-schist (74086), age recalc. with 1976 constants","Turner et al, 1978, 1979a, Nelson and Grybeck, 1980, Armstrong et al, 1986",67,10.800000000000000,"N",153,59.000000000000000,"W",4027]
["73ABe10b",null,"Survey Pass",67.2233333333333,153.693333333333,"Schist","K-Ar","Biotite",100.200,0,"(75073), 1976 constants, amphibolite schist","Turner et al, 1978, 1979a, Nelson and Grybeck, 1980",67,13.400000000000000,"N",153,41.600000000000000,"W",4028]
["73ABe10b",null,"Survey Pass",67.2233333333333,153.693333333333,"Schist","K-Ar","Hornblende",116.000,0,"(74171), 1976 constants, amphibolite schist","Turner et al, 1978, 1979a, Nelson and Grybeck, 1980",67,13.400000000000000,"N",153,41.600000000000000,"W",4029]
["72B211",null,"Survey Pass",67.2950000000000,155.941666666667,"Schist","K-Ar","Biotite",98.8000,0,"1976 constants,Turner et al,1978,1979,Nelson and Grybeck,1980","Grybeck et al,1977,Brosge and Pessel,1977,Pessel et al,1973,Hartman,1974",67,17.700000000000000,"N",155,56.500000000000000,"W",4030]
["72C211",null,"Survey Pass",67.3083333333333,155.931666666667,"Schist","K-Ar","Biotite",98.8000,0,"Recalc. with 1976 constants, (73011)","Turner et al, 1979a",67,18.500000000000000,"N",155,55.900000000000000,"W",4031]
["71F17",null,"Survey Pass",67.3233333333333,154.366666666667,"GNS","K-Ar","Biotite",92.2000,0,"Biotite-muscovite-gneiss (72083), age recalc. with 1976 constants","Turner et al, 1978, 1979a, Nelson and Grybeck, 1980",67,19.400000000000000,"N",154,22.000000000000000,"W",4032]
["77AMs30A",null,"Survey Pass",67.3383333333333,154.006666666667,"SKARN","K-Ar","Biotite",95.0000,0,null,"Silberman et al, 1979b, Nelson and Grybeck, 1980",67,20.300000000000000,"N",154,0.4,"W",4033]
["77AMs30A",null,"Survey Pass",67.3383333333333,154.006666666667,"SKARN","K-Ar","Hornblende",109.000,0,null,"Silberman et al, 1979b, Nelson and Grybeck, 1980",67,20.300000000000000,"N",154,0.4,"W",4034]
["77AMs30A",null,"Survey Pass",67.3383333333333,154.006666666667,"SKARN","K-Ar","Muscovite",94.0000,0,null,"Nelson and Grybeck, 1980",67,20.300000000000000,"N",154,0.4,"W",4035]
["77AMs19",null,"Survey Pass",67.3466666666667,154.926666666667,"GNS","R","Whole-rock",287.000,0,"Orthogneiss","Nelson and Grybeck, 1980",67,20.800000000000000,"N",154,55.600000000000000,"W",4036]
["77AMs6",null,"Survey Pass",67.3666666666667,154.188333333333,"GNS","R","Whole-rock",372.000,0,"Arrigetch Peaks, orthogneiss","Nelson and Grybeck, 1980",67,22.000000000000000,"N",154,11.300000000000000,"W",4037]
["62ARr192",null,"Survey Pass",67.3716666666667,154.183333333333,"Granite","A","Zircon",280.000,0,"Foliated, porphyritic biotite granite, Arrigetch Peaks","Marvin and Dobson, 1979, Nelson and Grybeck, 1980",67,22.300000000000000,"N",154,11.000000000000000,"W",4038]
["62ARr192",null,"Survey Pass",67.3716666666667,154.183333333333,"Granite","K-Ar","Biotite",88.0000,0,"Sable,1977,Turner et al,1978,79a,Marvin and Dobson,1979,Nelson and Grybeck,1980","Brosge and Reiser, 1971,  Brosge' and Pessel, 1977,  Grybeck et al, 1977",67,22.300000000000000,"N",154,11.000000000000000,"W",4039]
["SUR1",null,"Survey Pass",67.3833333333333,154.166666666667,"Granite","R","IC",360.000,0,"6 samples from Arrigetch Peaks and Mt. Igipak plutons","U.S.G.S., 1979b, Silberman et al, 1979b, Nelson and Grybeck, 1980",67,23.000000000000000,"N",154,10.000000000000000,"W",4040]
["62ABe264",null,"Survey Pass",67.3916666666667,154.025000000000,"Quartz monzonite","A","Zircon",240.000,0,"Faintly foliated porphyritic biotite quartz monzonite","Marvin and Dobson, 1979, Nelson and Grybeck, 1980",67,23.500000000000000,"N",154,1.500000000000000,"W",4041]
["62ABe264",null,"Survey Pass",67.3916666666667,154.025000000000,"Quartz monzonite","K-Ar","Biotite",90.0000,0,"Arrigetch Peaks,Grybeck et al,1977,Marvin and Dobson,1979,Nelson and Gry.,1980","Brosge and Reiser,1971, Brosge and Pessel, 1977,Turner et al, 1978, 1979a, Sable,1977",67,23.500000000000000,"N",154,1.500000000000000,"W",4042]
["62ABe264",null,"Survey Pass",67.3916666666667,154.025000000000,"Quartz monzonite","K-Ar","Muscovite",94.0000,0,"Arrigetch Peaks,Grybeck et al,1977,Marvin and Dobson,1979,Nelson and Gry.,1980","Brosge and Reis.,1971,Brosge and Pes.,1977,Turner et al,1978,1979a,Sable, 1977",67,23.500000000000000,"N",154,1.500000000000000,"W",4043]
["77AMs29",null,"Survey Pass",67.4016666666667,153.961666666667,"GNS","R","Whole-rock",350.000,0,"Orthogneiss","Nelson and Grybeck, 1980",67,24.100000000000000,"N",153,57.700000000000000,"W",4044]
["77AMs28",null,"Survey Pass",67.4100000000000,154.145000000000,"GNS","R","Whole-rock",326.000,0,"Arrigetch Peaks, orthogneiss","Nelson and Grybeck, 1980",67,24.600000000000000,"N",154,8.700000000000000,"W",4045]
["SUR2",null,"Survey Pass",67.4100000000000,154.145000000000,"GNS","R","IC",373.000,0,"Mt. Igikpak and Arrigetch Peaks plutons, samples 77AMs6,19,21,22,28 and 29","Silberman et al, 1979b, Nelson and Grybeck, 1980, Dillon, 1985",67,24.600000000000000,"N",154,8.700000000000000,"W",4046]
["77AMs22",null,"Survey Pass",67.4266666666667,154.578333333333,"GNS","R","Whole-rock",428.000,0,"Orthogneiss","Nelson and Grybeck, 1980",67,25.600000000000000,"N",154,34.700000000000000,"W",4047]
["77AMs21",null,"Survey Pass",67.4600000000000,154.701666666667,"GNS","R","Whole-rock",450.000,0,"Orthogneiss","Nelson and Grybeck, 1980",67,27.600000000000000,"N",154,42.100000000000000,"W",4048]
["74ARr11",null,"Wiseman",67.8383333333333,150.293333333333,"Mafic rock","K-Ar","Hornblende",395.000,0,"Age recalculated with 1976 constants","Dutro et al, 1976, U.S.G.S., 1976, Grybeck et al, 1977",67,50.300000000000000,"N",150,17.600000000000000,"W",4049]
["58ARr8a",null,"Wiseman",67.8550000000000,150.850000000000,"Mafic rock","K-Ar","Hornblende",381.000,0,"Mafic dike rock, 1976 constants","Dutro et al,1976, Grybeck et al,1977, Brosge and Reiser, 1971, U.S.G.S.,1965a, 1976, Sable, 1977, Repetski et al, 1987, Moore, 1987",67,51.300000000000000,"N",150,51.000000000000000,"W",4050]
["59ABe478",null,"Wiseman",67.9116666666667,150.543333333333,"Mafic rock","K-Ar","Hornblende",479.000,0,"Mafic dike rock, age recalc. with 1976 constants","Dutro et al,1976, U.S.G.S., 1976, Grybeck et al, 1977, Repetski et al, 1987, Moore, 1987",67,54.700000000000000,"N",150,32.600000000000000,"W",4051]
["59ABe478",null,"Wiseman",67.9116666666667,150.543333333333,"Mafic rock","K-Ar","Hornblende",520.000,0,"40Ar/39Ar analysis","Dutro et al, 1976, U.S.G.S., 1976, Grybeck et al, 1977",67,54.700000000000000,"N",150,32.600000000000000,"W",4052]
["65ALe 1",6720,"Wiseman",67.9116666666667,150.543333333333,"Mafic volcanic rock","40/39","Hornblende",384.000,12.000000000000000,"40Ar/39Ar analysis","Dutro et al, 1976, U.S.G.S., 1976, Grybeck et al, 1977; Till and others, in press",67,54.700000000000000,"N",150,32.600000000000000,"W",4053]
["65ALe 1",6720,"Wiseman",67.9116666666667,150.543333333333,"Mafic volcanic rock","K-Ar","Hornblende",388.000,0,"Mafic dike rock, K2O by isotope dilution, age recalc. with 1976 constants","Dutro et al, 1976, U.S.G.S., 1976, Grybeck et al, 1977",67,54.700000000000000,"N",150,32.600000000000000,"W",4054]
["65ALe 6",6720,"Wiseman",67.9133333333333,150.401666666667,"Mafic volcanic rock","40/39","Hornblende",478.000,20.000000000000000,"40Ar/39Ar analysis","Dutro et al, 1976, U.S.G.S., 1976, Grybeck et al, 1977; Till and others, in press",67,54.800000000000000,"N",150,24.100000000000000,"W",4055]
["65ALe 6",6720,"Wiseman",67.9133333333333,150.401666666667,"Mafic rock","K-Ar","Hornblende",478.000,0,"Age recalculated with 1976 constants","Dutro et al, 1976, U.S.G.S., 1976, Grybeck et al, 1977",67,54.800000000000000,"N",150,24.100000000000000,"W",4056]
["65ALe 6a",6720,"Wiseman",67.9133333333333,150.401666666667,"Mafic volcanic rock","40/39","Hornblende",465.000,14.000000000000000,"40Ar/39Ar analysis","Dutro et al, 1976,  U.S.G.S., 1976,  Grybeck et al, 1977",67,54.800000000000000,"N",150,24.100000000000000,"W",4057]
["APK90 111",7360,"Survey Pass",67.2868366666667,154.313771666667,"Schist","40/39 Plateau","Biotite",95.2000,0.2,"Pelitic schist","Till and others, in press",67,17.210200000000000,"N",154,18.826300000000000,"W",4058]
["APK94 105",7250,"Survey Pass",67.4226866666667,154.088803333333,"Orthogneiss","40/39","Biotite",90.5000,0.4,"Granitic orthogneiss, total fusion age?","Till and others, in press",67,25.361200000000000,"N",154,5.328200000000000,"W",4059]
["APK90 121",7360,"Survey Pass",67.2780866666667,154.357133333333,"Metabasite","40/39","Hornblende",105.100,1.000000000000000,null,"Till and others, in press",67,16.685200000000000,"N",154,21.428000000000000,"W",4060]
["APK90 119",7250,"Survey Pass",67.2863783333333,154.368865000000,"Schist","40/39 Isochron","White mica",95.5000,1.000000000000000,"Pelitic schist","Patrick and others, 1994; Till and others, in press",67,17.182700000000000,"N",154,22.131900000000000,"W",4061]
["93JT 124",7360,"Survey Pass",67.4971083333333,154.968033333333,"Schist","40/39","Biotite",102.000,0.2,"Biotite-garnet schist","Toro and others, 2002; Till and others, in press",67,29.826500000000000,"N",154,58.082000000000000,"W",4062]
["93JT 142",7360,"Survey Pass",67.5344450000000,154.967778333333,"Schist","40/39","Biotite",95.0000,0.3,"Biotite-garnet schist; sample locality plots within surfical deposits","Toro and others, 2002; Till and others, in press",67,32.066700000000000,"N",154,58.066700000000000,"W",4063]
["93JT 143",7360,"Survey Pass",67.5516666666667,154.990000000000,"Schist","40/39","Biotite",89.0000,0.2,"Biotite-garnet schist","Toro and others, 2002; Till and others, in press",67,33.100000000000000,"N",154,59.400000000000000,"W",4064]
["93JT 88",7250,"Survey Pass",67.5016666666667,154.990000000000,"Orthogneiss","40/39","Biotite",77.0000,0.3,null,"Toro and others, 2002; Till and others, in press",67,30.100000000000000,"N",154,59.400000000000000,"W",4065]
["94JT 79",7250,"Survey Pass",67.4200000000000,155.036666666667,"Orthogneiss","40/39","Biotite",85.0000,1.000000000000000,null,"Toro and others, 2002; Till and others, in press",67,25.200000000000000,"N",155,2.200000000000000,"W",4066]
["94JT 19",7250,"Survey Pass",67.5016666666667,155.190000000000,"Skarn","40/39","Hornblende",96.0000,1.700000000000000,"Skarn to marble","Toro and others, 2002; Till and others, in press",67,30.100000000000000,"N",155,11.400000000000000,"W",4067]
["94JT 33",7250,"Survey Pass",67.5000000000000,155.095000000000,"Orthogneiss","40/39","Hornblende",97.0000,1.000000000000000,null,"Toro and others, 2002; Till and others, in press",67,30.000000000000000,"N",155,5.700000000000000,"W",4068]
["93JT 96",6983,"Survey Pass",67.5783333333333,154.880000000000,"Marble","40/39","White Mica",97.0000,0.3,null,"Toro and others, 2002; Till and others, in press",67,34.700000000000000,"N",154,52.800000000000000,"W",4069]
["94JT 79",7250,"Survey Pass",67.4200000000000,155.036666666667,"Orthogneiss","40/39","White Mica",84.0000,1.000000000000000,null,"Toro and others, 2002; Till and others, in press",67,25.200000000000000,"N",155,2.200000000000000,"W",4070]
["93JT 85",8661,"Survey Pass",67.5250000000000,154.958333333333,"Schist","40/39","White Mica",74.0000,0.4,"Quartz-muscovite schist","Toro and others, 2002; Till and others, in press",67,31.500000000000000,"N",154,57.500000000000000,"W",4071]
["AVL94 78",7360,"Survey Pass",67.4412016666667,154.209508333333,"Unknown","40/39","Biotite",89.0000,0.4,null,"Vogl and others, 2002; Till and others, in press",67,26.472100000000000,"N",154,12.570500000000000,"W",4072]
["AVL95 43",7360,"Survey Pass",67.4815083333333,154.247816666667,"Unknown","40/39","Biotite",84.8000,0.4,null,"Vogl and others, 2002; Till and others, in press",67,28.890500000000000,"N",154,14.869000000000000,"W",4073]
["AVL95 52",7360,"Survey Pass",67.3966566666667,154.247115000000,"Quartzite","40/39","Biotite",94.6000,0.2,"Micaceous quartzite","Vogl and others, 2002; Till and others, in press",67,23.799400000000000,"N",154,14.826900000000000,"W",4074]
["AVL94 100b",7360,"Survey Pass",67.4536650000000,154.090538333333,"Metavolcanic rock","40/39 Total Fusion","Hornblende",152.100,0,null,"Vogl and others, 2002; Till and others, in press",67,27.219900000000000,"N",154,5.432300000000000,"W",4075]
["AVL95 96",7250,"Survey Pass",67.4255166666667,154.079588333333,"Gneiss","40/39","Hornblende",103.900,0.1,"Mafic layer in orthogneiss","Vogl and others, 2002; Till and others, in press",67,25.531000000000000,"N",154,4.775300000000000,"W",4076]
["AVL94 60",7360,"Survey Pass",67.4375183333333,154.200161666667,"Unknown","40/39 Plateau","White mica",92.0000,0.1,null,"Vogl and others, 2002; Till and others, in press",67,26.251100000000000,"N",154,12.009700000000000,"W",4077]
["7-26-84-5",5565,"Wiseman",67.2125000000000,150.073600000000,"Schist","40/39 Isochron","White mica",124.000,1.000000000000000,"Fine-grained quartz mica schist","Gottschalk and Snee, 1998; Till and others, in press",67,12.750000000000000,"N",150,4.416000000000000,"W",4078]
["25b 87",5565,"Wiseman",67.2238216666667,150.133558333333,"Schist","40/39 Plateau","White mica",113.300,0.5,null,"Blythe and others, 1998; Till and others, in press",67,13.429300000000000,"N",150,8.013500000000000,"W",4079]
["CH 128",8608,"Ambler River",67.0006633333333,156.767243333333,"Metabasite","40/39","White mica",130.000,0.4,"Coarse-grained white mica","Christiansen and Snee, 1994; Till and others, in press",67,0.0398,"N",156,46.034600000000000,"W",4080]
["CH 128",8608,"Ambler River",67.0006633333333,156.767243333333,"Metabasite","40/39","White mica",127.100,0.5,"Fine-grained white mica","Christiansen and Snee, 1994; Till and others, in press",67,0.0398,"N",156,46.034600000000000,"W",4081]
["CH 126",6927,"Ambler River",67.0023383333333,156.929588333333,"Mylonite","40/39","White mica",103.000,1.200000000000000,"Quartz mylonite","Christiansen and Snee, 1994; Till and others, in press",67,0.1403,"N",156,55.775300000000000,"W",4082]
["CH 140",8602,"Ambler River",67.0147800000000,156.886021666667,"Phyllite","40/39","White mica",103.500,0.3,"Graphitic phyllite","Christiansen and Snee, 1994; Till and others, in press",67,0.8868,"N",156,53.161300000000000,"W",4083]
["ELM 34",8602,"Ambler River",67.0424333333333,157.121450000000,"N.A.","40/39","White mica",94.4000,0.9,null,"Christiansen and Snee, 1994; Till and others, in press",67,2.546000000000000,"N",157,7.287000000000000,"W",4084]
["SBR88 56",8602,"Wiseman",67.2274000000000,150.198600000000,"Metagabbro","40/39 Isochron","Hornblende",114.000,1.000000000000000,"Barroisite-hornblende separate.","Gottschalk and Snee, 1998; Till and others, in press",67,13.644000000000000,"N",150,11.916000000000000,"W",4085]
["SBR88 51b",7250,"Wiseman",67.3597000000000,150.160600000000,"Schist","40/39 Isochron","Biotite",128.500,0.2,"Feldspathic schist","Gottschalk and Snee, 1998; Till and others, in press",67,21.582000000000000,"N",150,9.636000000000000,"W",4086]
["SBR88 51b (replicate)",7250,"Wiseman",67.3597000000000,150.160600000000,"Schist","40/39 Plateau","Biotite",129.300,0.4,"Feldspathic schist","Gottschalk and Snee, 1998; Till and others, in press",67,21.582000000000000,"N",150,9.636000000000000,"W",4087]
["SBR88 57",8602,"Wiseman",67.2260000000000,150.226400000000,"Schist","40/39 Plateau","White mica",118.300,0.3,"Quartz-mica schist","Gottschalk and Snee, 1998; Till and others, in press",67,13.560000000000000,"N",150,13.584000000000000,"W",4088]
["SBR88 8a",8602,"Wiseman",67.2431000000000,151.050000000000,"Schist","40/39 Plateau","White mica",124.200,0.3,"Quartz-mica schist","Gottschalk and Snee, 1998; Till and others, in press",67,14.586000000000000,"N",151,3.000000000000000,"W",4089]
["SB51 2a",7260,"Ambler River",67.2160166666667,156.648583333333,"Schist","40/39","White Mica",130.600,0.4,"Quartz-mica schist","Christiansen and Snee, 1994; Till and others, in press",67,12.961000000000000,"N",156,38.915000000000000,"W",4090]
["SB52 2b",7260,"Ambler River",67.2294616666667,156.740478333333,"Schist","40/39 Plateau","White Mica",171.400,0.4,"Quartz-mica schist","Christiansen and Snee, 1994; Till and others, in press",67,13.767700000000000,"N",156,44.428700000000000,"W",4091]
["SB53 1",8602,"Ambler River",67.2801866666667,156.711888333333,"Schist","40/39","White mica",123.000,0.5,"Garnet-bearing schist","Christiansen and Snee, 1994; Till and others, in press",67,16.811200000000000,"N",156,42.713300000000000,"W",4092]
["6-20-84-4",8602,"Wiseman",67.2839000000000,150.138900000000,"Eclogite","40/39","Hornblende",187.000,6.000000000000000,"Retrograded eclogite.  Isochron date of 188 +/- 6 determined from all steps.  Locality plots in surficial deposits as shown be Gottschalk and Snee (1998)","Gottschalk and Snee, 1998; Till and others, in press",67,17.034000000000000,"N",150,8.334000000000000,"W",4093]
["28-87",8602,"Wiseman",67.2800383333333,150.124616666667,"Schist","40/39 Plateau","White mica",124.600,1.800000000000000,"Plateau was not well developed","Blythe and others, 1998; Till and others, in press",67,16.802300000000000,"N",150,7.477000000000000,"W",4094]
["29-87",8602,"Wiseman",67.3308416666667,150.117651666667,"Schist","40/39 Plateau","White mica",122.500,1.900000000000000,"Plateau was not well developed","Blythe and others, 1998; Till and others, in press",67,19.850500000000000,"N",150,7.059100000000000,"W",4095]
["31-87",8605,"Wiseman",67.3663816666667,150.094926666667,"Schist","40/39 Plateau","White mica",124.800,1.000000000000000,"Plateau was not well developed","Blythe and others, 1998; Till and others, in press",67,21.982900000000000,"N",150,5.695600000000000,"W",4096]
["31-87",7250,"Wiseman",67.3483466666667,150.175696666667,"Orthogneiss","40/39 Plateau","White mica",120.400,2.200000000000000,"Granitic orthogniess.  Plateau was not well developed","Blythe and others, 1998; Till and others, in press",67,20.900800000000000,"N",150,10.541800000000000,"W",4097]
["ABR85 17",7250,"Chandalar",67.6683000000000,148.757800000000,"Orthogniess","40/39 Isochron","White mica",119.000,1.000000000000000,"Granitic orthogniess","Gottschalk and Snee, 1998; Till and others, in press",67,40.098000000000000,"N",148,45.468000000000000,"W",4098]
["8-4-85-5",8605,"Wiseman",67.4158000000000,150.006900000000,"Phyllite","40/39 Isochron","White mica",127.000,2.000000000000000,"Calc-phyllite","Gottschalk and Snee, 1998; Till and others, in press",67,24.948000000000000,"N",150,0.414,"W",4099]
["ADE91 88",8605,"Survey Pass",67.2553050000000,154.330908333333,"Schist","40/39 Plateau","White mica",101.500,0.2,"Pelitic schist","Till and others, in press",67,15.318300000000000,"N",154,19.854500000000000,"W",4100]
["SBR88 27",7250,"Wiseman",67.3160000000000,151.347500000000,"Orthogniess","40/39 Plateau","White mica",110.400,0.3,null,"Gottschalk and Snee, 1998; Till and others, in press",67,18.960000000000000,"N",151,20.850000000000000,"W",4101]