55ATr109
Ambler River
Schist
K-Ar
TR
Tremolite schist (76161)
Turner et al, 1978, 1979a, Mayfield et al, 1983
N
W
75AWM15031
Muscovite
Quartz-muscovite-schist, (76002)
75AWM1502
Actinolite
(75141) Actinolite-schist, age recalculated with 1976 constants
75AWM15353
Biotite
Feldspar-schist, (75077)
Feldspar-schist, (75046)
73ATr105.4
Biotite-muscovite-feldspar-schist (74091)
Biotite-muscovite-feldspar-schist, (75079)
75AWM1500
Feldspar-schist, (76010)
75AWM15011
75AWM1501.1, feldspar-schist
73RR45C
Actinolite-schist, (76077)
75AWM17455
SKARN
Actinolite-skarn, (75048)
AR-ISO1
IC
Glaucophane, samples A-1, A-2, A-3, C-2
Hartman, 1974,  Grybeck et al, 1977
AR-ISO2
Garnet-glaucophane-schist ,samples A-2,A-3 and 72F10ARGII (Survey Pass quad)
Hartman, 1974, Grybeck et al, 1977
C-2
GP
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
73RR10-1C
Quartz-muscovite-schist, (75083)
73RR7G
Glaucophane-quartz-muscovite-schist, (75001)
Glaucophane-quartz-muscovite-schist, (75002)
72E56B
Biotite-muscovite-schist, (73057)
73RR6EF
Mean of 2 determinations, (75129), (75126)
Biotite-feldspar-quartz-muscovite-schist, (75039)
73RR18F
Biotite-quartz-muscovite-schist, (74183)
Turner et al, 1978, 1979a, Mayfield et al, 1983, Armstrong et al, 1986
Biotite-quartz-muscovite-schist, (75052)
A-1
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
A-1CNM
PA
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
A-3
Jadeite-garnet-glaucophane-schist (72129), 1976 constants, excess Ar
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
A-2
Excess Ar
Hartman,1974, Grybeck et al,1977, Turner et al,1978,1979a, Mayfield et al,1983
Garnet-glaucophane-schist, (72162), add'l ref. Mayfield et al, 1983
72Pe92
GNS
Mean of 2 determinations, (73060), (74002)
(73059)
R
Biotite muscovite augen gneiss
Armstrong et al, 1986
73RR31C
Impure glaucophane, minimum age, glaucophane schist (75028), 1976 constants
73RR54
Inherited argon, mean of 2 determinations (75020),(75023), 1976 contants
73RR52
Mean of 2 determinations (75019),(75025), age recalc. with 1976 constants
74AWM309
Actinolite-quartz-chlorite-schist (75058), age recalc. with 1976 constants
73RR75-3
Impure actinolite, minimum age, actinolite-schist (76197)
72E222
(73058)
Turner et al, 1978, 1979a, Mayfield et al, 1983, Armstrong et al,1986
(73055)
Coarse flaser granitic gneiss, biotite and muscovite
72E100R
Quartz-muscovite-schist (73056)
60ATr134
Granodiorite
Meta-granite, add'l ref. Mayfield et al, 1983
Pessel et al, 1973, Pessel and Brosge, 1977, Turner et al, 1978, 1979a
75ATr142.2
Amphibolite
Hornblende
Mayfield et al, 1983
76ATr75b
OTHER
Possible minimum age of detrital muscovite in feldspathic wacke
74ABe222F
Baird Mountains
PP
(75091), age recalculated with 1976 constants
Turner et al, 1978, 1979a
74Pe2B
Biotite-muscovite-gneiss (75115), age recalculated with 1976 constants
Biotite-muscovite-gneiss (75124), age recalc. with 1976 constants
Turner et al, 1978, 1979a, Armstrong et al, 1986
74ATr150.3
Biotite-muscovite-feldspar-schist(75117), age recalc. with 1976 constants
Age recalculated with 1976 constants
66APa129
TUFF
Patton and Miller,1968,Grybeck et al,1977,Turner et al,1978,1979a,Patton,1973
66ATr39
Grybeck et al, 1977, Mayfield, 1975, Turner et al, 1978, 1979a
74AF144-3
Amphibole-schist (74125), 1976 constants, possible excess Ar
74Pe121
Quartz-muscovite-schist (75090), age recalculated with 1976 constants
74ATr129.7
Greenschist
(75082), 1976 constants, possible excess Ar
74AF155-13
Quartz-paragonite-glaucophane-schist,(75017),(74121),1976 constants, possible excess Ar
Quartz-paragonite-glaucophane-schist (74129),(75044),1976 constants
74ABe21B
(75097), age recalculated with 1976 constants
81ATr183f
Marble
Mica
Teledyne Isotopes, geol. suspect, same unit as 81ATr 186f, micaceous marble
Ellersieck, per. comm.,1984
81ATr187f
Metabasite
Amphibole
Geologically suspect, metabasite dike in marble, replicate.
Ellersieck, pers. comm., 1984
74AF145-1
Muscovite-schist (74122), metasediment, mean of 2 determinations
Turner et al, 1978, 1979a, Mayfield et al, 1982, Armstrong et al, 1986, Till, 1989
74AF145-5
Amphibole-schist (74124), metabasite
Turner et al, 1978, 1979a, Mayfield et al, 1982,  Turner et al, 1978, Armstrong et al, 1986, Till, 1989
OT
Whole rock-muscovite pair
74AF145
Meta sedimentary musc. schist (74AF145-1) and amphibole schist (74AF145-5)
Whole-rock
Model date assuming Sr=0.705
Armstrong et al, 1986, Till, 1989
81ATr186f
Teledyne Isotopes, geol. suspect, same unit as 81ATr183f, micaceous marble
76Md276EX
Garnet amphibolite, metabasite, Hub Mtn.
Mayfield et al, 1982, Armstrong et al, 1986, Till, 1989
78Md121
Quartz-mica schist, metasediment
76Md250HX
Diorite
Metamorphosed rock, minimum age, mean of 2 determinations
84DN156a
Chandalar
Hodzana pluton
Blum et al, 1987
84DN155b
Granite
84DN157
Monzodiorite
240B
Hodzana pluton, age recalculated with 1976 constants
Brosge' and Reiser, 1964,  Grybeck et al, 1977, Sable, 1977
240Z
A
Zircon
84DN160
239B
Chandalar pluton, age recalculated with 1976 constants
239M
241B
241Z
Brosge' and Reiser, 1964, Grybeck et al, 1977, Sable, 1977, Dillon, 1985
Chandalar1
Conflicting ages, same sample
Grybeck et al, 1977
49ATr511
Chandler Lake
Diabase
Plagioclase
Corrected with new constants
63ARr151
Christian
Gabbro
Reiser et al, 1965, Grybeck et al, 1977, Patton et al, 1977
63ABe202
77AMs12
Survey Pass
Metarhyolite
Nelson and Grybeck, 1980
77AMs12A
77AMs13
SUR3
Samples 77AMs11B, 12A, 13, and 12, metarhyolite
77AMs11B
72F10ARGII
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
Paragonite-actinolite, isochron with samples A-1, A-2, A-3(Ambler River quad.)
73B33
Whole rock-mineral (MU) pair, muscovite feldspar schist
Muscovite-feldspar-schist (74085), age recalc. with 1976 constants
Turner et al, 1978, 1979a, Nelson and Grybeck, 1980, Armstrong et al, 1986
75AWM3
Biotite-muscovite-feldspar-gneiss (76028), age recalc. with 1976 constants
Turner et al, 1978, 1979a, Nelson and Grybeck, 1980
73ATr15.2
Biotite and muscovite
Biotite-muscovite-feldspar-schist (74182), age recalc. with 1976 constants
Biotite-muscovite-feldspar-schist (75051), age recalc. with 1976 constants
Turner et al, 1978, 1979, Nelson and Grybeck, 1980, Armstrong et al, 1986
73ATr45.2
(74179), mean of 2 determinations, 1976 constants
Impure muscovite, minimum age (75068), age recalc. with 1976 constants
73G64
Recalc. with 1976 constants
Turner et al, 1979a
73ATr20.2
Whole rock-mineral (MU) pair, quartz muscovite schist
Quartz-muscovite-schist (74084), age recalc. with 1976 constants
73ABe58
Muscovite-feldspar-schist (74137), age recalc. with 1976 constants
73Pe32
Calc-muscovite-schist (74086), age recalc. with 1976 constants
73ABe10b
(75073), 1976 constants, amphibolite schist
(74171), 1976 constants, amphibolite schist
72B211
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
72C211
Recalc. with 1976 constants, (73011)
71F17
Biotite-muscovite-gneiss (72083), age recalc. with 1976 constants
77AMs30A
Silberman et al, 1979b, Nelson and Grybeck, 1980
77AMs19
Orthogneiss
77AMs6
Arrigetch Peaks, orthogneiss
62ARr192
Foliated, porphyritic biotite granite, Arrigetch Peaks
Marvin and Dobson, 1979, Nelson and Grybeck, 1980
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
SUR1
6 samples from Arrigetch Peaks and Mt. Igipak plutons
U.S.G.S., 1979b, Silberman et al, 1979b, Nelson and Grybeck, 1980
62ABe264
Quartz monzonite
Faintly foliated porphyritic biotite quartz monzonite
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
Brosge and Reis.,1971,Brosge and Pes.,1977,Turner et al,1978,1979a,Sable, 1977
77AMs29
77AMs28
SUR2
Mt. Igikpak and Arrigetch Peaks plutons, samples 77AMs6,19,21,22,28 and 29
Silberman et al, 1979b, Nelson and Grybeck, 1980, Dillon, 1985
77AMs22
77AMs21
74ARr11
Wiseman
Mafic rock
Dutro et al, 1976, U.S.G.S., 1976, Grybeck et al, 1977
58ARr8a
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
59ABe478
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
40Ar/39Ar analysis
65ALe 1
Mafic volcanic rock
40/39
Dutro et al, 1976, U.S.G.S., 1976, Grybeck et al, 1977; Till and others, in press
Mafic dike rock, K2O by isotope dilution, age recalc. with 1976 constants
65ALe 6
65ALe 6a
Dutro et al, 1976,  U.S.G.S., 1976,  Grybeck et al, 1977
APK90 111
40/39 Plateau
Pelitic schist
Till and others, in press
APK94 105
Granitic orthogneiss, total fusion age?
APK90 121
APK90 119
40/39 Isochron
White mica
Patrick and others, 1994; Till and others, in press
93JT 124
Biotite-garnet schist
Toro and others, 2002; Till and others, in press
93JT 142
Biotite-garnet schist; sample locality plots within surfical deposits
93JT 143
93JT 88
94JT 79
94JT 19
Skarn
Skarn to marble
94JT 33
93JT 96
White Mica
93JT 85
Quartz-muscovite schist
AVL94 78
Unknown
Vogl and others, 2002; Till and others, in press
AVL95 43
AVL95 52
Quartzite
Micaceous quartzite
AVL94 100b
Metavolcanic rock
40/39 Total Fusion
AVL95 96
Gneiss
Mafic layer in orthogneiss
AVL94 60
7-26-84-5
Fine-grained quartz mica schist
Gottschalk and Snee, 1998; Till and others, in press
25b 87
Blythe and others, 1998; Till and others, in press
CH 128
Coarse-grained white mica
Christiansen and Snee, 1994; Till and others, in press
Fine-grained white mica
CH 126
Mylonite
Quartz mylonite
CH 140
Phyllite
Graphitic phyllite
ELM 34
N.A.
SBR88 56
Metagabbro
Barroisite-hornblende separate.
SBR88 51b
Feldspathic schist
SBR88 51b (replicate)
SBR88 57
Quartz-mica schist
SBR88 8a
SB51 2a
SB52 2b
SB53 1
Garnet-bearing schist
6-20-84-4
Eclogite
Retrograded eclogite.  Isochron date of 188 +/- 6 determined from all steps.  Locality plots in surficial deposits as shown be Gottschalk and Snee (1998)
28-87
Plateau was not well developed
29-87
31-87
Granitic orthogniess.  Plateau was not well developed
ABR85 17
Orthogniess
Granitic orthogniess
8-4-85-5
Calc-phyllite
ADE91 88
SBR88 27