Basalt
|
K/Ar
|
gms
|
10.23
|
0.34
|
Moore et al., 1994
|
|
|
|
|
|
|
|
|
1131
|
Arandas, Jal.
|
-102.31
|
20.70
|
Basalt
|
K/Ar
|
WR
|
10.20
|
0.30
|
Nixon et al. 1987
|
|
|
|
|
|
|
|
|
|
La Ordeña, Gto.
|
-101.05
|
20.72
|
Andesite
|
K/Ar
|
WR
|
10.20
|
0.10
|
Hasenaka et al., 1994
|
|
|
|
|
|
|
|
|
1151
|
Punta Mita, Nay.
|
-105.50
|
20.78
|
Basalt
|
K/Ar
|
WR
|
10.20
|
0.80
|
Gastil et al. 1979
|
|
|
|
|
|
|
|
|
PR 90
|
A. Mezcala (C. La Col), Jal.
|
|
|
Basalt
|
K/Ar
|
WR
|
6.30
7.50
|
0.90
0.80
|
Ferrari et al., in prep.
|
|
|
|
|
|
|
|
|
IL 89 8
|
S. Cristobal, Jal.
|
-103.42
|
21.03
|
Ignimbrite (W Pum.)
|
Ar/Ar
|
San
|
10.17
|
0.04
|
Moore et al., 1994
|
|
|
|
|
|
|
|
|
ZHG JRE-7
|
W Atemajac, Jal.
|
-103.68
|
20.24
|
Basalt
|
K/Ar
|
gms
|
10.10
|
0.50
|
Rosas et al., 1997
|
|
|
|
|
|
|
|
|
1150
|
S. Vallejo, Nay.
|
-105.36
|
20.95
|
Basalt
|
K/Ar
|
WR
|
10.10
|
0.30
|
Gastil et al. 1979
|
|
|
|
|
|
|
|
|
DCH 9
|
S Atotonilco el alto, Jal.
|
-102.38
|
20.52
|
Rhyolite
|
K/Ar
|
WR
|
10.10
|
0.40
|
Castillo-Hdz. and Romero-Rios, 1991
|
|
|
|
|
|
|
|
|
Az 20
|
Los Azufres (-2700), Mich.
|
-100.68
|
19.75
|
Andesite
|
K/Ar
|
WR
|
10.10
|
0.60
|
Aumento and Negrin 1980
|
|
|
|
|
|
|
|
|
M203a
|
E Sayula Lake, Jal.
|
-103.45
|
20.06
|
Andesite
|
K/Ar
|
WR
|
10.10
|
0.40
|
Allan 1986
|
|
|
|
|
|
|
|
|
CHP 711
|
North of Atoyac, Jal.
|
-103.48
|
20.08
|
Andesite-bas.
|
K/Ar
|
|
10.08
|
0.80
|
Delgado et al., 1995
|
|
|
|
|
|
|
|
|
Ped Jal 8
|
S. Cristobal Barranca, Jal.
|
-103.41
|
21.01
|
Andesite-bas.
|
K/Ar
|
gms
|
10.05
|
0.32
|
Damon et al., 1979
|
|
|
|
|
|
|
|
|
GTO 2
|
Neutla, Gto.
|
|
|
Andesite
|
Ar/Ar
|
gms
|
10.00§
|
0.20
|
Cerca-Martínez, 1998
|
|
|
|
|
|
|
|
|
S 8
|
NW Arandas, Gua.
|
-102.43
|
20.76
|
Basalt
|
K/Ar
|
WR
|
10.00
|
2.00
|
Verma et al. 1985
|
|
|
|
|
|
|
|
|
|
|
|
|
Andesite
|
K/Ar
|
WR
|
10.00
|
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
|
|
|
|
Andesite
|
K/Ar
|
Pl
|
10.00
|
1.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
C3
|
Mesa Barduces, Jal.
|
-103.17
|
21.02
|
Basalt (ol px)
|
K/Ar
|
WR
|
10.00
|
1.00
|
Castillo-Hdz. and Romero-Rios, 1991
|
|
|
|
|
|
|
|
|
Ped Jal 14
|
C. La Campana, Ags.
|
-102.85
|
20.87
|
Basalt
|
K/Ar
|
WR
|
9.97
|
|
Nieto-Obregón et al. 1981
|
|
|
|
|
|
|
|
|
193
|
N Mecatan, Tepic
|
-105.08
|
21.68
|
Basalt
|
K/Ar
|
WR
|
9.90
|
0.30
|
Gastil et al. 1979
|
|
|
|
|
|
|
|
|
*
|
Sierra Las Cruces, DF
|
-99.30
|
19.28
|
Ignimbrite
|
K/Ar
|
WR
|
9.80
|
1.00
|
Mooser et al. 1974
|
|
|
|
|
|
|
|
|
95-G4a
|
El Creston
|
-97.71
|
19.45
|
Andesite
|
K/Ar
|
WR
|
9.70
|
0.50
|
Carrasco -Nuñez et al., 1998
|
|
|
|
|
|
|
|
|
A 28
|
S. Cristobal, Jal.
|
-103.40
|
21.03
|
Basalt
|
K/Ar
|
gms
|
9.61
|
0.28
|
Moore et al., 1994
|
|
|
|
|
|
|
|
|
|
|
|
|
Andesite
|
K/Ar
|
WR
|
9.60
|
1.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
Ped Jal 12
|
Lagunillas, Jal.
|
-102.90
|
20.84
|
Basalt
|
K/Ar
|
WR
|
9.58
|
0.35
|
Nieto-Obregón et al. 1981
|
|
|
|
|
|
|
|
|
1
|
Rio G. Santiago, Jal.
|
-103.31
|
20.85
|
Basalt
|
K/Ar
|
WR
|
9.50
|
0.10
|
Watkins et al. 1971
|
|
|
|
|
|
|
|
|
Joy 72
|
Volcán La Joya, Gto.
|
|
|
Andesite
|
Ar/Ar
|
gms
|
10.60§
|
0.50
|
Aguirre et al., in prep.
|
|
|
|
|
|
|
|
|
|
La Ordeña, Gto.
|
-101.02
|
20.68
|
Andesite
|
K/Ar
|
WR
|
9.44
|
0.10
|
Hasenaka et al., 1994
|
|
|
|
|
|
|
|
|
LIRT 100
|
Chiconquiaco-Palma Sola, Ver.
|
-96.74
|
19.61
|
Basalt alk.
|
K/Ar
|
Pl
|
9.40
|
0.90
|
Lopez-Infanzon, 1990
|
|
|
|
|
|
|
|
|
EN 33
|
N Pathè, Hgo.
|
-99.42
|
20.68
|
Basalt
|
K/Ar
|
WR
|
9.38
|
0.50
|
Jacobo-Albarrán, 1986
|
|
|
|
|
|
|
|
|
DCH 5
|
E Atotonilco, Jal.
|
-102.34
|
20.47
|
Basalt
|
K/Ar
|
WR
|
9.30
|
0.90
|
Castillo-Hdz. and Romero-Rios, 1991
|
|
|
|
|
|
|
|
|
DCH 7
|
Atotonilco el alto, Jal.
|
-102.45
|
20.48
|
Ignimbrite
|
K/Ar
|
San
|
9.30
|
0.40
|
Castillo-Hdz. and Romero-Rios, 1991
|
|
|
|
|
|
|
|
|
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