|
|
|
NT 22
|
Aljibes, Hgo.
|
-99.60
|
20.60
|
Basalt
|
Ar/Ar
|
WR
|
7.70
|
0.10
|
Suter et al., 1995
|
|
|
|
|
|
|
|
|
VE 118
|
NE Jalapa, Ver.
|
-97.58
|
19.78
|
Andesite
|
K/Ar
|
WR
|
7.70
|
0.30
|
Cantagrel et al. 1979
|
|
|
|
|
|
|
|
|
HF 25
|
Pathè, Hgo.
|
-99.72
|
20.64
|
Rhyolite
|
K/Ar
|
|
7.60
|
0.30
|
Venegas et al. 1985
|
|
|
|
|
|
|
|
|
W 2
|
S. Cristobal Barranca, Jal.
|
-103.42
|
21.03
|
Basalt (px)
|
K/Ar
|
WR
|
7.50
|
2.00
|
Castillo-Hdz. and Romero-Rios, 1991
|
|
|
|
|
|
|
|
|
EN 36
|
N Path , Pach.
|
-99.74
|
20.76
|
Andesite
|
K/Ar
|
WR
|
7.43
|
0.40
|
Jacobo-Albarrán, 1986
|
|
|
|
|
|
|
|
|
|
|
|
|
Granodiorite
|
K/Ar
|
Feld
|
7.30
|
4.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
W3
|
S. Cristobal Barr., Jal.
|
-103.42
|
21.12
|
Andesite
|
K/Ar
|
WR
|
7.30
|
2.00
|
Castillo-Hdz. and Romero-Rios, 1991
|
|
|
|
|
|
|
|
|
*
|
Cerro Cantera, Ver.
|
-96.43
|
19.65
|
Dacite
|
K/Ar
|
WR
|
7.20
|
0.20
|
Negendank et al. 1985
|
|
|
|
|
|
|
|
|
LF 1
|
Mesa Los Caballos, Jal.
|
|
|
Rhyolite
|
Ar/Ar
|
Bio
|
7.20
|
0.30
|
Ferrari et al., in prep.
|
|
|
|
|
|
|
|
|
KA 3100
|
N Guadalajara, Jal.
|
-103.32
|
20.78
|
Rhyolite
|
K/Ar
|
San
|
7.15
|
0.20
|
Gilbert et al. 1985
|
|
|
|
|
|
|
|
|
1340a
|
La Ordeña, Gto.
|
-101.12
|
20.60
|
Basalt
|
K/Ar
|
WR
|
7.12
|
0.32
|
Hasenaka et al., 1994
|
|
|
|
|
|
|
|
|
HU 44
|
Sierra Los Caballos, Hgo.
|
|
|
Rhyolite
|
Ar/Ar
|
Pl
|
12.70
|
0.40
|
Aguirre and Lopez, unpublished
|
|
|
|
|
|
|
|
|
*L
|
Mesa Colorada, Jal.
|
-103.33
|
20.70
|
Ignimbrite
|
K/Ar
|
|
7.00
|
1.00
|
Soto and Ortega, 1982
|
|
|
|
|
|
|
|
|
|
|
|
|
Ignimbrite
|
K/Ar
|
Pl
|
7.00
|
1.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Ignimbrite
|
K/Ar
|
glass
|
7.00
|
1.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Trachyandesite
|
K/Ar
|
WR
|
7.00
|
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
*
|
Cerro Largo, Hgo.
|
-99.74
|
20.61
|
Rhyolite
|
K/Ar
|
|
6.70
|
0.10
|
Milan and Herrera 1987
|
|
|
|
|
|
|
|
|
*
|
Cerro Largo, Hgo.
|
-99.74
|
20.61
|
Rhyolite
|
K/Ar
|
|
6.60
|
0.10
|
Milan and Herrera 1987
|
|
|
|
|
|
|
|
|
OB 1
|
Los Pericos, Jal.
|
|
|
Rhyolite
|
FT
|
Obs
|
6.55
|
0.28
|
Ferrari et al., in prep.
|
|
|
|
|
|
|
|
|
*
|
Gpo S. Juan, Pach.
|
-99.74
|
20.61
|
Basalt
|
K/Ar
|
WR
|
6.50
|
0.20
|
Milan and Herrera 1987
|
|
|
|
|
|
|
|
|
VE 15
|
Cerro Cantera, Ver.
|
-96.45
|
19.68
|
Dacite
|
K/Ar
|
|
6.50
|
0.20
|
Cantagrel et al. 1979
|
|
|
|
|
|
|
|
|
*
|
Gpo S. Juan, Qro.
|
-99.74
|
20.61
|
Basalt
|
K/Ar
|
WR
|
6.40
|
0.20
|
Milan and Herrera 1987
|
|
|
|
|
|
|
|
|
CHP 555
|
El Divisadero, Jal.
|
-102.96
|
20.06
|
Basalt
|
K/Ar
|
|
6.26
|
1.21
|
Delgado et al., 1995
|
|
|
|
|
|
|
|
|
CHP 717
|
S Teocuitatlan. Jal.
|
-103.33
|
20.05
|
Basalt
|
K/Ar
|
|
6.22
|
0.96
|
Delgado G. H., 1992
|
|
|
|
|
|
|
|
|
LIRT 2
|
Chiconquiaco-Palma Sola,Ver.
|
-96.70
|
19.83
|
Gabbro
|
K/Ar
|
WR
|
6.20
|
0.60
|
Lopez-Infanzon, 1990
|
|
|
|
|
|
|
|
|
CHP 563
|
S Tizapan el Alto, Jal.
|
-103.02
|
20.07
|
Alk. And.-Bas.
|
K/Ar
|
|
6.15
|
0.79
|
Delgado G. H., 1992
|
|
|
|
|
|
|
|
|
Mx 88-19
|
El Terrero, Gto.
|
-100.57
|
20.13
|
Ignimbrite
|
K/Ar
|
Pl
|
6.10
|
0.60
|
Ferrari et al. 1991
|
|
|
|
|
|
|
|
|
Pu 3
|
Sierra el Gavilan, Gto.
|
-101.54
|
20.02
|
Basalt
|
K/Ar
|
WR
|
6.00
|
0.40
|
Pasquarè et al., 1991
|
|
|
|
|
|
|
|
|
Cl 14
|
S. Rafael, Gto.
|
-101.45
|
19.96
|
Basalt
|
K/Ar
|
WR
|
6.00
|
0.30
|
Pasquarè et al., 1991
|
|
|
|
|
|
|
|
|
LIRT 202
|
Chiconquiaco-Palma Sola, Ver.
|
-96.86
|
19.78
|
Basalt alk.
|
K/Ar
|
WR
|
6.00
|
0.60
|
Lopez-Infanzon, 1990
|
|
|
|
|
|
|
|
|
|
|
|
|
Andesite
|
K/Ar
|
WR
|
6.00
|
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
E Amatitan, Jal.
|
-103.64
|
20.83
|
Ignimbrite
|
K/Ar
|
|
6.00
|
|
CFE 1980
|
|
|
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