Gsa data Repository Compilation of ages of magmatic rocks in central Mexico



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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IMP, UNPUBLISHED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







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