2
|
Rio G. Santiago, Jal.
|
-103.33
|
20.85
|
Basalt
|
K/Ar
|
WR
|
9.20
|
0.10
|
Watkins et al. 1971
|
|
|
|
|
|
|
|
|
LI 203
|
Chiconquiaco-Palma Sola, Ver.
|
-96.87
|
19.76
|
Trachy-dacite
|
K/Ar
|
WR
|
9.20
|
0.50
|
Lopez-Infanzon, 1990
|
|
|
|
|
|
|
|
|
3
|
Rio G. Santiago, Jal.
|
-103.31
|
20.83
|
Ignimbrite
|
K/Ar
|
WR
|
9.10
|
0.10
|
Watkins et al. 1971
|
|
|
|
|
|
|
|
|
DCH 6
|
Ayotlàn, Jal.
|
-102.27
|
20.48
|
Ignimbrite
|
K/Ar
|
WR
|
9.10
|
0.40
|
Castillo-Hdz. and Romero-Rios, 1991
|
|
|
|
|
|
|
|
|
LIRT 35
|
Tenochitlan, Ver.
|
-96.91
|
19.82
|
Dacitic ignimbrite
|
K/Ar
|
Bio
|
9.08
|
0.70
|
Lopez-Infanzon, 1990
|
|
|
|
|
|
|
|
|
4
|
Rio G. Santiago, Jal.
|
-103.33
|
20.81
|
Basalt
|
K/Ar
|
WR
|
9.00
|
0.20
|
Watkins et al. 1971
|
|
|
|
|
|
|
|
|
HF 7
|
Taxbatha, Hgo.
|
-99.60
|
20.50
|
Andesite
|
K/Ar
|
|
9.00
|
0.80
|
Venegas et al. 1985
|
|
|
|
|
|
|
|
|
|
|
|
|
Trachyte
|
K/Ar
|
WR
|
9.00
|
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
*
|
S Atemajac, Jal.
|
-103.70
|
20.10
|
Bas.-Andesite
|
K/Ar
|
WR
|
9.00
|
0.00
|
CFE 1980
|
|
|
|
|
|
|
|
|
MS 102
|
Atotonilco, Jal.
|
-103.75
|
20.33
|
Basalt
|
K/Ar
|
WR
|
9.00
|
1.00
|
CFE 1980
|
|
|
|
|
|
|
|
|
95-R1
|
Cruz de Leon, Pue.
|
-97.85
|
19.61
|
Andesite
|
K/Ar
|
WR
|
9.00
|
0.40
|
Carrasco-Nuñez et al., 1998
|
|
|
|
|
|
|
|
|
ZI 43
|
N Zimampan, Hgo.
|
-99.40
|
20.78
|
Andesite
|
K/Ar
|
WR
|
9.00
|
0.30
|
Cantagrel et al. 1979
|
|
|
|
|
|
|
|
|
KR 381
|
Cinco de Mayo, Nay.
|
-105.09
|
21.69
|
Alk.-Basalt
|
Ar/Ar
|
gms
|
8.93
|
0.11
|
Righter et al., 1995
|
|
|
|
|
|
|
|
|
KR 452
|
Jumantan, Nay.
|
-105.03
|
21.67
|
Alk.-Basalt
|
Ar/Ar
|
gsm
|
8.91
|
0.06
|
Righter et al., 1995
|
|
|
|
|
|
|
|
|
95-X4d
|
Cuyoaco, Pue.
|
-97.70
|
19.60
|
Andesite
|
K/Ar
|
WR
|
8.90
|
0.40
|
Carrasco-Nuñez et al., 1998
|
|
|
|
|
|
|
|
|
ROE 142
|
Villa Chavinda, Mich.
|
-102.39
|
20.03
|
Basalt
|
K/Ar
|
WR
|
8.80
|
0.80
|
Rosas et al., 1989
|
|
|
|
|
|
|
|
|
*K
|
C. S. Isidro, Nay.
|
-104.79
|
21.59
|
Basalt
|
K/Ar
|
WR
|
8.70
|
0.70
|
Soto and Ortega, 1982
|
|
|
|
|
|
|
|
|
|
Ocotlán toll house, Jal.
|
-103.75
|
20.42
|
Basalt
|
Ar/Ar
|
gms
|
8.70
|
1.00
|
Rosas & Urrutia-Fucugauchi
|
|
|
|
|
|
|
|
|
CB1 N7
|
Ceboruco Well, Nay.
|
|
|
Basaltic-and.
|
Ar/Ar
|
Pl
|
8.60
|
0.20
|
Ferrari et al., in prep.
|
|
|
|
|
|
|
|
|
DCH 10
|
Huascato, Jal.
|
-102.24
|
20.49
|
Rhyolite
|
K/Ar
|
San
|
8.60
|
0.30
|
Castillo-Hdz. and Romero-Rios, 1991
|
|
|
|
|
|
|
|
|
Ped Jal 17
|
Mistemeque, Jal.
|
-103.79
|
20.99
|
Basalt
|
K/Ar
|
WR
|
8.52
|
0.10
|
Nieto-Obregón et al. 1985
|
|
|
|
|
|
|
|
|
|
|
|
|
Basalt
|
K/Ar
|
WR
|
8.30
|
1.00
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
1152
|
Punta Raza, Nay.
|
-105.26
|
21.01
|
Basalt
|
K/Ar
|
Pl
|
8.30
|
0.60
|
Gastil et al. 1979
|
|
|
|
|
|
|
|
|
PR 67
|
Mesa Chinacatiahua, Zac.
|
|
|
Basalt
|
K/Ar
|
WR
|
10.20
|
0.40
|
Ferrari et al., in prep.
|
|
|
|
|
|
|
|
|
Mx 88-20
|
Queretaro airport, Qro.
|
-100.37
|
20.62
|
Basalt
|
K/Ar
|
WR
|
8.10
|
0.80
|
Pasquarè et al., 1991
|
|
|
|
|
|
|
|
|
*NT-29
|
Mexquital valley, Hgo.
|
|
|
Basalt
|
K/Ar
|
gms
|
8.00
|
0.50
|
Suter, Lopez, unpublished
|
|
|
|
|
|
|
|
|
Ped Jal 11
|
C. Las Higueras, Jal.
|
-103.23
|
20.75
|
Basalt
|
K/Ar
|
WR
|
8.02
|
0.10
|
Nieto-Obregón et al. 1981
|
|
|
|
|
|
|
|
|
|
|
|
|
|
K/Ar
|
WR
|
8.00
|
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
Cu 8
|
Peña el Panal, Mich.
|
-101.16
|
19.75
|
Andesite
|
K/Ar
|
WR
|
7.81
|
0.60
|
Pasquarè et al., 1991
|
|
|
|
|
|
|
|
|
HF 24
|
Pathè, Hgo.
|
-99.72
|
20.64
|
Rhyolite
|
K/Ar
|
|
7.80
|
0.40
|
Venegas et al. 1985
|
|
|
|
|
|
|
|
|
421
|
El Jicote, N Mecatan, Nay.
|
-105.03
|
21.71
|
Rhyolite
|
K/Ar
|
Feld
|
7.80
|
0.60
|
Gastil et al. 1979
|
|
|
|
|
|
|
|
|
KA 4289
|
Zapotlanejo, Jal.
|
-103.03
|
20.71
|
Ignimbrite
|
K/Ar
|
|
7.73
|
0.20
|
Gilbert et al. 1985
|
|
|
|
|
|
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