|
|
|
|
|
|
|
|
*I
|
Aguamilpa, Nay.
|
-104.77
|
21.86
|
Monzonitic dike
|
K/Ar
|
WR
|
11.50
|
0.50
|
Soto and Ortega, 1982
|
|
|
|
|
|
|
|
|
Ped Nay 3
|
La Yesca, Nay.
|
-104.03
|
21.30
|
Basaltic dike
|
K/Ar
|
WR
|
11.48
|
0.24
|
Damon et al., 1979
|
|
|
|
|
|
|
|
|
Mx 88-13
|
Sierra Los Agostinos, Mich.
|
-100.72
|
20.20
|
Rhyolite
|
K/Ar
|
Pl
|
11.40
|
0.60
|
Pasquarè et al., 1991
|
|
|
|
|
|
|
|
|
*J
|
Mirador el Aguila, Nay.
|
-105.01
|
21.67
|
Basalt
|
K/Ar
|
WR
|
11.20
|
0.80
|
Soto and Ortega, 1982
|
|
|
|
|
|
|
|
|
Jag 2
|
San Miguel de Allende, Gto.
|
-101.77
|
20.83
|
Andesite
|
K/Ar
|
WR
|
11.10
|
0.40
|
Perez-Venzor et al., 1997
|
|
|
|
|
|
|
|
|
|
V. Manzano (S. Cruces), Mex.
|
-99.38
|
19.55
|
Dacite
|
K/Ar
|
WR
|
11.10
|
|
Negendank et al., 1981
|
|
|
|
|
|
|
|
|
1155
|
Punta Mita, Nay.
|
-105.41
|
20.91
|
Ignimbrite
|
K/Ar
|
Feld
|
11.10
|
0.20
|
Gastil et al. 1979
|
|
|
|
|
|
|
|
|
|
Concordia area, Sin.
|
-106.15
|
23.28
|
Basaltic dike
|
Ar/Ar
|
WR
|
11.03
|
0.16
|
Henry & Aranda-Gomez, 1997
|
|
|
|
|
|
|
|
|
|
|
|
|
Basalt
|
K/Ar
|
WR
|
11.00
|
1.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
S 6
|
N Atotonilco, Jal.
|
-102.53
|
20.68
|
Bas.-Andesite
|
K/Ar
|
WR
|
11.00
|
2.00
|
Verma et al. 1985
|
|
|
|
|
|
|
|
|
*
|
Alseseca, Pue.
|
-97.18
|
19.80
|
Andesite
|
K/Ar
|
WR
|
11.00
|
0.00
|
Yanez-G. and Garcia-D. 1980
|
|
|
|
|
|
|
|
|
|
|
|
|
Porfido Qz.-Dior.
|
K/Ar
|
Bio
|
11.00
|
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Andesite
|
K/Ar
|
WR
|
11.00
|
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Tonalite
|
K/Ar
|
Bio
|
11.00
|
0.87
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Granodiorite
|
K/Ar
|
Bio
|
11.00
|
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
95-J8
|
Cerro Grande, Pue.
|
-97.84
|
19.56
|
Andesite
|
K/Ar
|
WR
|
11.00
|
0.60
|
Carrasco-Nuñez et al., 1998
|
|
|
|
|
|
|
|
|
A 81
|
Garcia de la Cadena, Jal.
|
-103.48
|
21.18
|
Bas.-Andesite
|
K/Ar
|
gms
|
10.99
|
0.23
|
Moore et al., 1994
|
|
|
|
|
|
|
|
|
Ped Zac 1
|
Mesa Toyahua, Zac
|
-102.77
|
21.32
|
Andesite
|
K/Ar
|
WR
|
10.96
|
0.57
|
Nieto-Obregón et al. 1981
|
|
|
|
|
|
|
|
|
Ped Nay 12
|
La Manga Larga, Nay.
|
-104.34
|
21.43
|
Basaltic dike
|
K/Ar
|
WR
|
10.92
|
0.33
|
Damon et al., 1979
|
|
|
|
|
|
|
|
|
ZA 8
|
Volcan Zamorano, Que.
|
-100.18
|
20.91
|
Andesite
|
K/Ar
|
WR
|
10.90
|
0.50
|
Carrasco-Nuñez et al., 1989
|
|
|
|
|
|
|
|
|
GTO 1
|
Soria, Gto.
|
|
|
Andesite
|
Ar/Ar
|
WR
|
10.80
|
0.50
|
Cerca-Martínez, 1998
|
|
|
|
|
|
|
|
|
DCH 2
|
E Atotonilco, Jal.
|
-102.22
|
20.57
|
Bas. Andesite
|
K/Ar
|
WR
|
10.80
|
0.90
|
Castillo-Hdz. and Romero-Rios, 1991
|
|
|
|
|
|
|
|
|
EN 197
|
Tepotzotlán, Mex.
|
-99.23
|
19.69
|
Andesite
|
K/Ar
|
WR
|
10.74
|
0.40
|
Jacobo-Albarrán, 1986
|
|
|
|
|
|
|
|
|
|
Concordia area, Sin.
|
-106.14
|
23.27
|
Basaltic dike
|
Ar/Ar
|
WR
|
10.70
|
0.20
|
Henry & Aranda-Gomez, 1997
|
|
|
|
|
|
|
|
|
PEDHI 21-81
|
Potreritos, Hgo.
|
-99.33
|
20.49
|
Basalt
|
K/Ar
|
WR
|
10.70
|
0.20
|
Suter et al., 1997
|
|
|
|
|
|
|
|
|
-
|
N of S. M. de Allende, Gto.
|
-100.76
|
21.00
|
Basalt
|
K/Ar
|
WR
|
10.70
|
0.70
|
Carranza-Castaneda et al., 1994
|
|
|
|
|
|
|
|
|
Ped Zac 2
|
C. San Miguel, Ags.
|
-103.82
|
21.42
|
Bas.-Andesite
|
K/Ar
|
gms
|
10.52
|
0.22
|
Nieto-Obregón et al. 1981
|
|
|
|
|
|
|
|
|
|
La Ordeña, Gto.
|
-101.13
|
20.70
|
Andesite
|
K/Ar
|
WR
|
10.50
|
0.10
|
Hasenaka et al., 1994
|
|
|
|
|
|
|
|
|
|
La Ordeña, Gto.
|
-101.17
|
20.68
|
Bas.-Andesite
|
K/Ar
|
WR
|
10.30
|
0.10
|
Hasenaka et al., 1994
|
|
|
|
|
|
|
|
|
DCH 4
|
Ayotlàn, Jal.
|
-102.30
|
20.55
|
Basalt
|
K/Ar
|
WR
|
10.30
|
0.50
|
Castillo-Hdz. and Romero-Rios, 1991
|
|
|
|
|
|
|
|
|
A 30
|
S. Cristobal Barranca, Jal.
|
-103.42
|
21.05
|
Basalt
|
K/Ar
|
gms
|
10.25
|
0.82
|
Moore et al., 1994
|
|
|
|
|
|
|
|
|
61-180
|
S. Cristobal Barranca, Jal.
|
-103.42
|
21.37
|
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