2.50
|
0.07
|
Wallace & Carmichael, 1989
|
|
|
|
|
|
|
|
|
MAS-324
|
Amajaquillo, Jal.
|
-104.58
|
20.93
|
Basalt
|
K/Ar
|
WR
|
2.47
|
0.12
|
Righter & Carmichael, 1992
|
|
|
|
|
|
|
|
|
TUX-77
|
Cordon Pelon, Los Tuxtlas, Ver.
|
-94.80
|
18.22
|
Alk.-Basalt
|
K/Ar
|
|
2.47
|
0.04
|
Jacobo-Albarrán et al., 1992
|
|
|
|
|
|
|
|
|
A 89
|
E Sayula L., Jal.
|
-103.46
|
19.90
|
Alk.-Andesite
|
K/Ar
|
WR
|
2.41
|
0.04
|
Allan 1986
|
|
|
|
|
|
|
|
|
NT 25
|
Garabato, Amealco, Qro.
|
-100.18
|
20.11
|
Andesite
|
Ar/Ar
|
gms
|
2.40
|
0.10
|
Suter et al., 1985
|
|
|
|
|
|
|
|
|
PH 40
|
Atotonilco, Hgo.
|
-98.58
|
20.38
|
Bas.-Andesite
|
K/Ar
|
WR
|
2.38
|
0.00
|
Cantagrel et al. 1979
|
|
|
|
|
|
|
|
|
LTX-40
|
Piedra Labrada, Ver.
|
-94.78
|
18.40
|
Alk.-Basalt
|
K/Ar
|
|
2.37
|
0.90
|
Jacobo-Albarrán et al., 1992
|
|
|
|
|
|
|
|
|
997
|
Cerro Grande, Gua.
|
-100.42
|
20.42
|
Andesite
|
K/Ar
|
gms
|
2.35
|
0.25
|
Ban et al., 1992
|
|
|
|
|
|
|
|
|
267
|
San Pedro Lagun., Nay.
|
-104.77
|
21.17
|
Rhyolite
|
K/Ar
|
Pl
|
2.30
|
0.50
|
Gastil et al. 1979
|
|
|
|
|
|
|
|
|
TUX-123
|
Plateau La Azufrera, Tux.
|
-95.17
|
18.34
|
Alk.-Basalt
|
K/Ar
|
|
2.28
|
0.46
|
Jacobo-Albarrán et al., 1992
|
|
|
|
|
|
|
|
|
Mex 116
|
C. Los Amoles, Gua
|
-101.26
|
20.10
|
Andesite
|
K/Ar
|
WR
|
2.26
|
0.10
|
Pasquarè et al., 1991
|
|
|
|
|
|
|
|
|
995
|
Cerro Culiacan, Gto.
|
-100.97
|
20.33
|
Andesite
|
K/Ar
|
gms
|
2.23
|
0.23
|
Ban et al., 1992
|
|
|
|
|
|
|
|
|
LI 110
|
Chiconquiaco-Palma Sola, Ver.
|
-96.78
|
19.69
|
Basanite
|
K/Ar
|
WR
|
2.20
|
0.20
|
Lopez-Infanzon, 1990
|
|
|
|
|
|
|
|
|
Pu 12
|
E Puruandiro, Gto.
|
-101.40
|
20.08
|
Andesite
|
K/Ar
|
WR
|
2.19
|
0.20
|
Pasquarè et al., 1991
|
|
|
|
|
|
|
|
|
LL-48
|
C. La Cienega, Jal.
|
-104.50
|
20.69
|
Andesite
|
K/Ar
|
gms
|
2.18
|
0.10
|
Righter & Carmichael, 1992
|
|
|
|
|
|
|
|
|
Am 19b
|
El Comal, Amealco, Qro.
|
-100.15
|
20.10
|
Andesite
|
K/Ar
|
gms
|
2.18
|
0.07
|
Aguirre, 1997
|
|
|
|
|
|
|
|
|
978
|
Brinco del Diablo, Mich.
|
-101.72
|
19.93
|
Andesite
|
K/Ar
|
gms
|
2.16
|
0.20
|
Ban et al., 1992
|
|
|
|
|
|
|
|
|
Mx 88-33
|
S Villa Madero, Mich.
|
-101.35
|
19.30
|
Dacite
|
K/Ar
|
Bio
|
2.15
|
0.20
|
Pasquarè et al., 1991
|
|
|
|
|
|
|
|
|
LTX-95
|
Plateau La Azufrera, Tux., Ver.
|
-94.95
|
18.15
|
Alk.-Basalt
|
K/Ar
|
|
2.15
|
0.07
|
Jacobo-Albarrán et al., 1992
|
|
|
|
|
|
|
|
|
EN 44
|
E Tepuxtepec,Mex.
|
-100.19
|
20.01
|
Andesite
|
K/Ar
|
WR
|
2.13
|
0.70
|
Jacobo-Albarrán, 1986
|
|
|
|
|
|
|
|
|
439
|
Cora, Nay.
|
-105.08
|
21.50
|
Andesite
|
K/Ar
|
Pl
|
2.10
|
0.40
|
Gastil et al. 1979
|
|
|
|
|
|
|
|
|
LTX-82
|
Plateau La Azufrera, Tux., Ver.
|
-94.92
|
18.32
|
Alk.-Basalt
|
K/Ar
|
|
2.08
|
0.10
|
Jacobo-Albarrán et al., 1992
|
|
|
|
|
|
|
|
|
|
|
|
|
Diabase
|
K/Ar
|
Pl
|
2.00
|
0.50
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
SN-211
|
N of Las Cuevas, Nay.
|
|
|
Basalt
|
K/Ar
|
WR
|
2.00
|
0.10
|
Nelson, unpublished
|
|
|
|
|
|
|
|
|
SN-304
|
NE S. J. Mojarras, Nay.
|
|
|
Alk.Basalt
|
K/Ar
|
WR
|
2.00
|
0.20
|
Nelson, unpublished
|
|
|
|
|
|
|
|
|
SN-306
|
NE S.J. Mojarras, Nay.
|
|
|
Alk.Basalt
|
K/Ar
|
WR
|
2.00
|
0.50
|
Nelson, unpublished
|
|
|
|
|
|
|
|
|
N-5
|
Villa Mar, Mich.
|
-102.53
|
20.05
|
Andesite
|
K/Ar
|
WR
|
2.00
|
0.20
|
Rosas et al., 1989
|
|
|
|
|
|
|
|
|
HKA 978
|
|
-101.75
|
19.92
|
|
K/Ar
|
|
1.97
|
0.23
|
Delgado et al., 1995
|
|
|
|
|
|
|
|
|
*
|
E Cofre de Perote, Ver
|
-97.00
|
19.50
|
Basalt
|
K/Ar
|
WR
|
1.90
|
0.00
|
Negendank et al. 1985
|
|
|
|
|
|
|
|
|
VE 66
|
E Pico de Orizaba, Ver.
|
-96.60
|
19.38
|
Basalt
|
K/Ar
|
WR
|
1.90
|
0.00
|
Cantagrel et al. 1979
|
|
|
|
|
|
|
|
|
KA 2957
|
N La Primavera, Jal.
|
-103.60
|
20.71
|
Basalt
|
K/Ar
|
|
1.78
|
0.30
|
Gilbert et al. 1985
|
|
|
|
|
|
|
|
|
115
|
Atenguillo, Jal.
|
-104.56
|
20.32
|
Lamprophire
|
K/Ar
|
|
1.75
|
0.20
|
Wallace & Carmichael, 1989
|
|
|
|
|
|
|
|
|
Ped Jal 7
| |
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