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



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Basalt

K/Ar

WR

16.00

0.13

IMP, UNPUBLISHED

























369

SW Tepic

-105.01

21.31

Basalt

K/Ar

Pl

16.00

0.70

Gastil et al. 1979

























Hz 20

Zitacuaro, Mich.

-100.20

19.47

Andesite

K/Ar

gms

16.00

1.00

CFE, 1992b

























PEDHI 20-81

Puerto La Estancia, Hgo.

-99.32

20.80

Vitric tuff

K/Ar

San

15.70

0.40

Suter et al., 1997

























Ped Jal 13

Los Camachos, Rio Verde Jal.

-102.92

20.83

Ignimbrite

K/Ar

San

15.30

0.32

Nieto-Obregón et al. 1981

























Mas 712

Santa Rosa dam, Jal.

-103.71

20.91

Ignimbrite gouge

K/Ar

gouge

15.20

2.50

Moore et al., 1994

























*

Sierra de Guadalupe, DF

-99.08

19.62

Andesite

K/Ar

WR

15.00

0.80

Mooser et al. 1974

























Nucleo 6

Tulyehualco 1 well, D.F. -1130

-99.02

19.27

Andesite

K/Ar

WR

15.00

0.70

Jacobo-Albarrán, 1986




























Laollaga, Oax.

-95.25

16.38

Ignimbrite

K/Ar




15.00




Ferrusquia & McDowell, in press

























PHA 85

Cerro Los Picachos, Nay.

-104.73

21.72

Andesite

K/Ar

WR

14.70

0.70

Rodriguez-C. and Rodriguez-T., 1992

























EN 39

E S.Juan del Rio, Hgo.

-99.85

20.35

Andesite

K/Ar

WR

14.70

0.70

Jacobo-Albarrán, 1986

























EN 199

Sierra de Guadalupe, DF

-99.10

19.58

Andesite

K/Ar

WR

14.56

0.70

Jacobo-Albarrán, 1986

























Mas 714

Santa Rosa dam, Jal.

-103.71

20.91

Ignimbrite gouge

K/Ar

gouge

14.50

0.40

Moore et al., 1994




























Tlacolula, Oax.

-96.42

16.88

Ignimbrite

K/Ar

Pl + Bio

14.50




Ferrusquia & McDowell, unpub.




























Ixtapa, Oax.







Ignimbrite

K/Ar




14.40




Ferrusquia & McDowell, unpub.

























EN 168

Chapa de Mota, Mex.

-99.52

19.72

Basalt

K/Ar

WR

14.26

1.50

Jacobo-Albarrán, 1986

























*

Sierra de Guadalupe, DF

-99.09

19.60

Basalt

K/Ar

WR

14.20

0.70

Mooser et al. 1974

























Ls 23

Las Trojes, Mich.

-100.91

19.65

Andesite

K/Ar

WR

14.10

0.70

Nixon et al., 1987





































Andesite

K/Ar

WR

14.00

1.00

IMP, UNPUBLISHED





































Basalt

K/Ar

WR

14.00

1.00

IMP, UNPUBLISHED

























*

Cuenca Libres-Oriental, Pue.

-97.13

19.70

Granodiorite

K/Ar




14.00

0.00

Yanez-G. and Garcia-D. 1980

























LIRT 32

Chiconquiaco-Palma Sola, Ver.

-96.76

19.67

Alk.-basalt

K/Ar

WR

14.00

1.00

Lopez-Infanzon, 1990





































Andesite

K/Ar

Pl

14.00

1.00

IMP, UNPUBLISHED

























Ve 71b

Palma Sola Massif, Ver.

-96.40

19.71

Alk.-Basalt

K/Ar

WR

14.00

0.50

Cantagrel et al. 1979

























Mx 88-32

NW di Caracuaro, Mich.

-101.27

19.05

Dacite

K/Ar

Amph

13.90

0.70

Pasquarè et al., 1991

























188

Em. Zapata, Nay.

-104.90

21.20

Basalt

K/Ar

Pl

13.80

3.10

Gastil et al. 1979

























EN 17

NNW Tula, Hgo.

-99.47

20.23

Andesite

K/Ar

WR

13.78

0.70

Jacobo-Albarrán, 1986





































Basalt

K/Ar

WR

13.70

0.80

IMP, UNPUBLISHED

























EN 123

E Copandaro, Mich.

-101.14

19.91

Andesite

K/Ar

WR

13.66

1.90

Jacobo-Albarrán, 1986

























RGS 12

S. Rosa, Jal.

-103.70

20.90

Ignimbrite

K/Ar

San

13.60

0.10

Nieto-Obregón et al. 1985

























EN 167

Chapa de Mota, Mex.

-99.51

19.71

Andesite

K/Ar

WR

13.57

0.60

Jacobo-Albarrán, 1986

























DCH 8

Atotonilco el alto, Jal.

-102.42

20.52

Basalto

K/Ar

WR

13.50

1.30

Castillo-Hdz. and Romero-Rios, 1991
















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