gms
|
4.92
|
0.15
|
Moore et al., 1994
|
|
|
|
|
|
|
|
|
ZHG JRE-9
|
Sierra de San Marcos, Jal.
|
-103.56
|
20.25
|
Ignimbrite
|
K/Ar
|
Bio
|
4.90
|
0.30
|
Rosas et al., 1997
|
|
|
|
|
|
|
|
|
LIRT 3
|
Chiconquiaco-Palma Sola, Ver.
|
-96.62
|
19.76
|
Basalt alk.
|
K/Ar
|
WR
|
4.90
|
0.50
|
Lopez-Infanzon, 1990
|
|
|
|
|
|
|
|
|
Ml 97
|
N Amacueca, Jal.
|
-103.60
|
20.06
|
Andesite
|
K/Ar
|
WR
|
4.89
|
0.30
|
Allan 1986
|
|
|
|
|
|
|
|
|
6
|
Rio G. Santiago, Jal.
|
-103.33
|
20.76
|
Ignimbrite
|
K/Ar
|
WR
|
4.80
|
0.10
|
Watkins et al. 1971
|
|
|
|
|
|
|
|
|
AG 89
|
Tirados, S. Los Agostinos, Gto.
|
|
|
Andesite
|
K/Ar
|
WR
|
4.80
|
0.30
|
Aguirre and Lopez, unpublished
|
|
|
|
|
|
|
|
|
CHP 726b
|
S Tizapan el Alto, Jal.
|
-102.93
|
20.02
|
Andesite
|
K/Ar
|
|
4.79
|
0.59
|
Delgado G. H., 1992
|
|
|
|
|
|
|
|
|
*N
|
Mesa Colorada, Jal.
|
-103.34
|
20.71
|
Ignimbrite
|
K/Ar
|
|
4.75
|
0.00
|
Soto and Ortega, 1982
|
|
|
|
|
|
|
|
|
HU 20.5
|
Don Guinyo, Hgo.
|
|
|
Ignimbrite
|
Ar/Ar
|
gms
|
4.50§
|
0.40
|
Aguirre and Lopez, unpublished
|
|
|
|
|
|
|
|
|
KA 3046
|
S. Gaspar, Jal.
|
-103.27
|
20.78
|
Ignimbrite
|
K/Ar
|
|
4.71
|
0.07
|
Gilbert et al. 1985
|
|
|
|
|
|
|
|
|
7
|
Rio G. Santiago, Jal.
|
-103.33
|
20.76
|
Basalt
|
K/Ar
|
WR
|
4.70
|
0.10
|
Watkins et al. 1971
|
|
|
|
|
|
|
|
|
Am 84
|
W Amealco caldera, Qro.
|
-100.45
|
20.17
|
Ignimbrite
|
K/Ar
|
Feld
|
4.70
|
0.19
|
Aguirre, 1997
|
|
|
|
|
|
|
|
|
AG 88
|
Tirados, Gto.
|
|
|
Ignimbrite
|
K/Ar
|
glass
|
4.70
|
0.15
|
Aguirre and Lopez, unpublished
|
|
|
|
|
|
|
|
|
Ped Jal 21
|
Achio, Jal.
|
-103.71
|
20.88
|
Ignimbrite a Ho
|
K/Ar
|
Pl
|
4.69
|
0.17
|
Nieto-Obregón et al. 1985
|
|
|
|
|
|
|
|
|
B116
|
S Sayula, Jal.
|
-103.65
|
19.86
|
Ankaratite
|
K/Ar
|
Phl
|
4.69
|
0.05
|
Allan 1986
|
|
|
|
|
|
|
|
|
Ped Jal 8
|
Ixtlahuacan del Rio, Jal.
|
-103.24
|
20.87
|
Ignimbrite
|
K/Ar
|
An
|
4.68
|
0.11
|
Nieto-Obregón et al. 1981
|
|
|
|
|
|
|
|
|
Am 22
|
Amealco caldera, Qro.
|
-100.30
|
20.13
|
Ignimbrite
|
K/Ar
|
glass
|
4.68
|
0.10
|
Aguirre, 1997
|
|
|
|
|
|
|
|
|
Al 11
|
N Amacueca, Jal.
|
-103.61
|
20.05
|
Basalt
|
K/Ar
|
WR
|
4.65
|
0.05
|
Allan 1986
|
|
|
|
|
|
|
|
|
CHP 106
|
San Marcos, Jal.
|
-103.53
|
20.33
|
Andesite
|
K/Ar
|
WR
|
4.64
|
0.68
|
Delgado et al., 1995
|
|
|
|
|
|
|
|
|
GD-6
|
E of La Coronilla (RGS), Jal.
|
-103.28
|
20.75
|
Alk.-Basalt
|
K/Ar
|
gms
|
4.60
|
0.13
|
Moore et al., 1994
|
|
|
|
|
|
|
|
|
284
|
E S. Maria Oro, Nay.
|
-104.56
|
21.31
|
Rhyolite
|
K/Ar
|
Feld
|
4.60
|
0.20
|
Gastil et al. 1979
|
|
|
|
|
|
|
|
|
C 69
|
Zacoalco, Jal.
|
-103.58
|
20.21
|
Andesite
|
K/Ar
|
WR
|
4.60
|
0.10
|
Allan 1986
|
|
|
|
|
|
|
|
|
CHP 705
|
Toluquilla, S Citala, Jal.
|
-103.24
|
20.01
|
Alk. Bas.-And.
|
K/Ar
|
WR
|
4.58
|
1.07
|
Delgado et al., 1995
|
|
|
|
|
|
|
|
|
C 91
|
E Atemajac, Jal.
|
-103.58
|
20.08
|
Alk.-Andesite
|
K/Ar
|
WR
|
4.56
|
0.04
|
Allan 1986
|
|
|
|
|
|
|
|
|
505
|
E Tapalpa, Jal.
|
-103.61
|
19.83
|
Dacite
|
K/Ar
|
Hb
|
4.56
|
0.01
|
Allan 1986
|
|
|
|
|
|
|
|
|
AZ 148
|
La Virgen, Gto.
|
-100.57
|
20.00
|
Ignimbrite
|
K/Ar
|
WR
|
4.50
|
0.10
|
Pradal and Robin, 1994
|
|
|
|
|
|
|
|
|
CHP 169
|
El Picacho, Jal.
|
-103.19
|
20.13
|
Basalt
|
K/Ar
|
WR
|
4.48
|
0.69
|
Delgado et al., 1995
|
|
|
|
|
|
|
|
|
A 45
|
S Zacoalco, Jal.
|
-103.55
|
20.11
|
Lamprophyre
|
K/Ar
|
WR
|
4.42
|
0.03
|
Allan 1986
|
|
|
|
|
|
|
|
|
ZHG JRE-8
|
Sierra de Tapalpa, Jal.
|
-103.90
|
20.32
|
Andesite
|
K/Ar
|
WR
|
4.40
|
0.20
|
Rosas et al., 1997
|
|
|
|
|
|
|
|
|
LI 104
|
Chiconquiaco-Palma Sola, Ver.
|
-96.75
|
19.67
|
Trachy-basalt
|
K/Ar
|
WR
|
4.40
|
0.30
|
Lopez-Infanzon, 1990
|
|
|
|
|
|
|
|
|
KA 4288r
|
RGS Huentitan, Jal.
|
-103.31
|
20.78
|
Basalt
|
K/Ar
|
WR
|
4.40
|
0.30
|
Gilbert et al. 1985
|
|
|
|
|
|
|
|
|
EN 41
|
E Amealco, Qro.
|
-99.99
|
20.21
|
Andesite
|
K/Ar
|
WR
|
4.36
|
0.30
|
Jacobo-Albarrán, 1986
|
|
|
|
|
|
|
|
|
Cl 3
|
E Atemajac, Jal.
| |
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