|
|
|
|
Granodiorite
|
K/Ar
|
Bio
|
34.00
|
2.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Dolerite
|
K/Ar
|
WR
|
34.00
|
2.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Granodiorite
|
K/Ar
|
Bio
|
34.00
|
3.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
Huajuapan, Oax.
|
|
|
Ignimbrite
|
K/Ar
|
|
33.60
|
|
Moran-Zenteno et al. unpub.
|
|
|
|
|
|
|
|
|
Mx 88-17
|
Mesa Tzitzio, Mich.
|
-100.94
|
19.60
|
Ignimbrite
|
K/Ar
|
San
|
33.40
|
1.70
|
Pasquarè et al., 1991
|
|
|
|
|
|
|
|
|
SLP 1
|
S. Antonio SLP
|
|
|
Ignimbrite
|
K/Ar
|
San
|
33.40
|
1.70
|
Ferrari, unpublished
|
|
|
|
|
|
|
|
|
|
|
|
|
Dacitic tuff
|
K/Ar
|
WR
|
33.00
|
1.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Rhyolite
|
K/Ar
|
WR
|
33.00
|
3.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Granodiorite
|
K/Ar
|
Bio
|
33.00
|
3.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Tonalite
|
K/Ar
|
Bio
|
33.00
|
3.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Granodiorite
|
K/Ar
|
Feld
|
33.00
|
3.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Andesitic tuff
|
K/Ar
|
WR
|
33.00
|
3.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Andesite
|
K/Ar
|
Pl
|
33.00
|
3.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Tonalite
|
K/Ar
|
Bio
|
33.00
|
1.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Granite
|
K/Ar
|
Bio
|
33.00
|
3.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
CFE(3Rb-Sr)
|
Carr. Altam.-Zihuatanejo
|
-100.90
|
17.25
|
Granito
|
Rb/Sr
|
WR
|
32.90
|
8.00
|
Gonzalez-Partida et al., 1989
|
|
|
|
|
|
|
|
|
TX 16
|
Taxco, Gro.
|
-99.56
|
18.60
|
Ignimbrite
|
K/Ar
|
WR
|
32.40
|
0.90
|
Alba-Aldarve et al., 1996
|
|
|
|
|
|
|
|
|
JL-JE-A F
|
25 km E of Durango, Dgo.
|
-104.63
|
24.12
|
Ignimbrite
|
K/Ar
|
Feld
|
32.10
|
1.90
|
McDowell & Keitzer, 1977
|
|
|
|
|
|
|
|
|
*
|
Guanajuato area
|
-101.25
|
21.25
|
Rhyolite
|
K/Ar
|
WR
|
32.00
|
1.00
|
Gross 1975
|
|
|
|
|
|
|
|
|
|
|
|
|
Andesite
|
K/Ar
|
WR
|
32.00
|
2.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Andesite
|
K/Ar
|
WR
|
32.00
|
2.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Andesite
|
K/Ar
|
WR
|
32.00
|
3.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Granodiorite
|
K/Ar
|
Bio
|
32.00
|
3.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Latite
|
K/Ar
|
WR
|
32.00
|
3.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Andesite
|
K/Ar
|
WR
|
32.00
|
3.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
Mexcala, Gro.
|
|
|
Ignimbrite
|
K/Ar
|
|
32.00
|
|
Moran-Zenteno et al. unpub.
|
|
|
|
|
|
|
|
|
|
El Cotijo, Oax.
|
|
|
Ignimbrite
|
K/Ar
|
|
32.00
|
|
Moran-Zenteno et al. unpub.
|
|
|
|
|
|
|
|
|
SOL 5
|
Quetzalapa, Gro.
|
-99.36
|
18.33
|
Ignimbrite
|
K/Ar
|
Bio
|
31.90
|
0.80
|
Alba-Aldarve et al., 1996
|
|
|
|
|
|
|
|
|
TX 25
|
Taxco, Gro.
|
-99.55
|
18.65
|
Ignimbrite
|
K/Ar
|
WR
|
31.90
|
0.08
|
Alba-Aldarve et al., 1996
|
|
|
|
|
|
|
|
|
HP 24
|
NE of Tayoltita, Dgo.
|
-105.90
|
24.16
|
Qz-dioritic dike
|
K/Ar
|
Bio
|
31.70
|
0.4
|
Henry & Fredrikson, 1987
|
|
|
|
|
|
|
|
|
TX 10
|
Taxco, Gro.
|
-99.56
|
18.58
|
Rhyolite
|
K/Ar
|
Bio
|
31.60
|
1.20
|
Alba-Aldarve et al., 1996
|
|
|
|
|
|
|
|
|
K-LP-T F
|
25 km E of Durango, Dgo.
|
-104.63
|
24.12
|
Ignimbrite
|
K/Ar
|
Feld
|
31.40
|
0.70
|
McDowell & Keitzer, 1977
|
|
|
|
|
|
|
|
|
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