|
AZ 121
|
Zinapecuaro, Mich.
|
-100.84
|
19.85
|
Rhyolite
|
K/Ar
|
WR
|
1.30
|
0.03
|
Pradal and Robin, 1994
|
|
|
|
|
|
|
|
|
|
|
|
|
Andesite
|
K/Ar
|
WR
|
1.30
|
0.30
|
IMP, UNPUBLISHED
|
|
|
|
|
|
|
|
|
Ar 02
|
Atarjea de Tesc., Nay.
|
|
|
Andesite
|
K/Ar
|
gms
|
1.30
|
0.30
|
Ferrari et al., in prep.
|
|
|
|
|
|
|
|
|
NE 17
|
Nevado de Toluca, Mex.
|
-99.63
|
18.96
|
Andesite
|
K/Ar
|
WR
|
1.30
|
0.30
|
Cantagrel et al. 1981
|
|
|
|
|
|
|
|
|
CHP 290
|
La Palma, SE Chapala lake, Jal.
|
-102.75
|
20.14
|
Andesite
|
K/Ar
|
WR
|
1.29
|
0.50
|
Delgado et al., 1995
|
|
|
|
|
|
|
|
|
TUX-109
|
Plateau S. Andres, Tuxtlas, Ver.
|
-95.25
|
18.47
|
Alk.-Basalt
|
K/Ar
|
|
1.26
|
0.25
|
Jacobo-Albarrán et al., 1992
|
|
|
|
|
|
|
|
|
B 44
|
N Cd. Guzman, Col.
|
-103.45
|
19.78
|
Lamprophyre
|
K/Ar
|
WR
|
1.26
|
0.03
|
Allan 1986
|
|
|
|
|
|
|
|
|
AZ 128
|
Loma Grande, Mich.
|
-100.72
|
19.87
|
Dacite
|
K/Ar
|
WR
|
1.22
|
0.09
|
Pradal and Robin, 1994
|
|
|
|
|
|
|
|
|
999
|
Cerro Camataràn, Gto.
|
-101.55
|
20.17
|
Andesite
|
K/Ar
|
gms
|
1.22
|
0.13
|
Ban et al., 1992
|
|
|
|
|
|
|
|
|
Ar 3
|
W di Zinapecuaro, Mich.
|
-100.85
|
19.85
|
Rhyolite
|
K/Ar
|
WR
|
1.21
|
0.04
|
Ferrari et al., 1991
|
|
|
|
|
|
|
|
|
-
|
San Nicolas, Mich.
|
-100.98
|
20.38
|
Andesite
|
K/Ar
|
WR
|
1.20
|
|
Murphy and Carmichael, 1985
|
|
|
|
|
|
|
|
|
LI 207
|
Chiconquiaco-Palma Sola
|
-96.85
|
19.69
|
Basaltic-andesite
|
K/Ar
|
WR
|
1.20
|
0.03
|
Lopez-Infanzon, 1990
|
|
|
|
|
|
|
|
|
NE 19
|
Nevado de Toluca
|
-99.70
|
18.95
|
Andesite
|
K/Ar
|
WR
|
1.20
|
0.20
|
Cantagrel et al. 1981
|
|
|
|
|
|
|
|
|
Ar 4
|
S. Bartolomè Coro, Zin.
|
-100.85
|
19.88
|
Rhyolite
|
K/Ar
|
WR
|
1.19
|
0.09
|
Ferrari et al., 1991
|
|
|
|
|
|
|
|
|
A 4
|
N Cd. Guzman, Col.
|
-103.52
|
19.85
|
Lamprophyre
|
K/Ar
|
WR
|
1.15
|
0.07
|
Allan 1986
|
|
|
|
|
|
|
|
|
Ar 2
|
SE Zinapecuaro, Mich.
|
-100.71
|
19.81
|
Rhyolite
|
K/Ar
|
WR
|
1.14
|
0.04
|
Ferrari et al., 1991
|
|
|
|
|
|
|
|
|
*O
|
Presa Bañadero, Nay.
|
-104.72
|
21.59
|
Basalt
|
K/Ar
|
|
1.10
|
0.30
|
Soto and Ortega, 1982
|
|
|
|
|
|
|
|
|
Ar 10
|
Amado Nervo, Nay.
|
|
|
Basalt
|
K/Ar
|
WR
|
1.10
|
0.30
|
Ferrari et al., in prep.
|
|
|
|
|
|
|
|
|
Ped Jal 4
|
Mesa palomas. Jal.
|
-104.17
|
21.07
|
Alk.-Basalt
|
K/Ar
|
WR
|
1.09
|
0.35
|
Damon et al., 1979
|
|
|
|
|
|
|
|
|
CHP 666
|
S. Pedro Valencia, Jal.
|
-103.65
|
20.48
|
Dacite
|
K/Ar
|
|
1.07
|
0.21
|
Delgado et al., 1995
|
|
|
|
|
|
|
|
|
KR 396
|
Jumantan, Nay.
|
-105.03
|
21.64
|
Alk.-bas.
|
K/Ar
|
gms
|
1.05
|
0.11
|
Righter et al., 1995
|
|
|
|
|
|
|
|
|
KR 313
|
W Las Varas, Nay.
|
-105.18
|
21.07
|
Alk.-Basalt
|
Ar/Ar
|
gms
|
1.05
|
0.11
|
Righter et al., 1995
|
|
|
|
|
|
|
|
|
AZ 122
|
S. Pedro Jacuaro, Mich.
|
-100.65
|
19.78
|
Obsidian
|
K/Ar
|
WR
|
1.04
|
0.06
|
Pradal and Robin, 1994
|
|
|
|
|
|
|
|
|
*
|
L. Az., Cerro el Gallo
|
-100.64
|
19.76
|
Rhyolite
|
K/Ar
|
glass
|
1.03
|
0.02
|
Dobson & Mahood, 1985
|
|
|
|
|
|
|
|
|
*
|
N Los Azufres
|
-100.63
|
19.81
|
Andesite
|
K/Ar
|
WR
|
1.03
|
0.20
|
Dobson & Mahood, 1985
|
|
|
|
|
|
|
|
|
*
|
Oyameles, Los Hum.
|
-97.50
|
19.70
|
Rhyolite
|
K/Ar
|
|
1.00
|
0.20
|
Yanez-G. and Garcia-D. 1980
|
|
|
|
|
|
|
|
|
*
|
C Pizarro, Los Hum.
|
-97.45
|
19.53
|
Rhyolite
|
K/Ar
|
|
1.00
|
0.20
|
Yanez-G. and Garcia-D. 1980
|
|
|
|
|
|
|
|
|
Ar 11
|
Amado Nervo, Nay.
|
|
|
Bas.-Andesite
|
K/Ar
|
WR
|
1.00
|
0.30
|
Ferrari et al., in prep.
|
|
|
|
|
|
|
|
|
Hz 34
|
Zitacuaro area, Mich.
|
-100.20
|
19.38
|
Andesite
|
K/Ar
|
Pl
|
0.99
|
0.10
|
CFE, 1992b
|
|
|
|
|
|
|
|
|
M 211a
|
N of San Marcos, Gua.
|
-103.55
|
20.36
|
Andesite
|
K/Ar
|
WR
|
0.99
|
0.01
|
Allan 1986
|
|
|
|
|
|
|
|
|
Jal 5
|
Tequilizintla, Jal.
|
-103.92
|
20.75
|
Alk.-Basalt
|
K/Ar
|
WR
|
0.97
|
0.20
|
Nieto-Obregón et al. 1985
|
|
|
|
|
|
|
|
|
CHP 636b
|
San Marcos, Jal.
|
-103.57
|
20.35
|
Dacite
|
K/Ar
|
|
0.97
|
|
Venegas and Ruy, 1981
|
|
|
Share with your friends: |
