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



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Cascada El Salto, Jal

-103.20

19.92

Andesite

K/Ar

WR

1.70

0.06

Nieto-Obregón et al. 1981

























*

E Cofre de Perote, Ver

-97.00

19.50

Basalt

K/Ar

WR

1.70

0.00

Negendank et al. 1985

























Hz 2

Zitacuaro area, Mich.

-100.10

19.25

Andesite

K/Ar

gms

1.70

0.30

CFE, 1992b

























Ml 69

S Sayula, Jal.

-103.60

19.81

Dacite Ho

K/Ar

Hb

1.70

0.10

Allan 1986

























CHP 722

Cerro Garcia, Jal.

-103.38

20.19

Andesite

K/Ar




1.69

0.54

Delgado et al., 1995

























706

C. Grande La Piedad, Jal.

-102.08

20.25

Andesite

K/Ar

WR

1.60

0.10

Nixon et al. 1987

























LTX-23

Plateau S. Andres, Tuxtlas, Ver.

-94.97

18.37

Alk.-Basalt

K/Ar




1.60

0.60

Jacobo-Albarrán et al., 1992

























Ar 07

Atarjea de Tesc., Nay.







Andesite

K/Ar

gms

1.60

0.30

Ferrari et al., in prep.

























Ls 443

ENE Zinapecuaro, Mich.

-100.75

19.88

Rhyolite (Obs.)

K/Ar

WR

1.60

0.15

Nixon et al., 1987

























Hz 25

Zitacuaro area, Mich.

-100.33

19.38

Dacite

K/Ar

Hb

1.60

0.30

CFE, 1992b

























NE 20

Nevado de Toluca

-99.63

18.88

Andesite

K/Ar




1.60

0.10

Cantagrel et al. 1981

























VE 52

E Cofre de Perote

-96.80

19.48

Andesite

K/Ar

WR

1.57

0.07

Cantagrel et al. 1979

























CHP 549

SSE Jocotepec, SW Chap. l.

-103.37

20.17

Andesite

K/Ar




1.56

0.50

Delgado G. H., 1992

























VNE 5

Nevado de Toluca

-99.80

19.15

Andesite

K/Ar

WR

1.54

0.00

Cantagrel et al. 1981

























AR 5

Mesa Comalera, Zinapecuaro

-100.80

19.85

Rhyolite

K/Ar

WR

1.53

0.13

Ferrari et al., 1991

























195

San Sebastian, Jal.

-104.88

20.82

Bas.-Andesite

K/Ar

WR

1.52

0.12

Lange & Carmichael, 1992

























Hz 40

Zitacuaro area, Mich.

-100.35

19.27

Andesite

K/Ar

gms

1.50

0.30

CFE, 1992b

























VE 116

Pico de Orizaba

-98.11

19.63

Bas.-Andesite

K/Ar

WR

1.50

0.00

Cantagrel et al. 1979

























KR 320

N Zacualpan, Nay.

-105.15

21.28

Basalt

Ar/Ar

gms

1.49

0.03

Righter et al., 1995

























TUX-120

Plateau S. Andres, Tuxtlas

-95.17

18.62

Alk.-Basalt

K/Ar




1.46

0.29

Jacobo-Albarrán et al., 1992

























Bl 3

N S. Marcos, Jal.

-103.53

20.35

Andesite

K/Ar

WR

1.44

0.02

Allan 1986

























Cl 7

Cerro Tipicato, Coeneo

-101.61

19.85

Andesite

K/Ar

WR

1.40

0.40

Pasquarè et al., 1991

























Ar 09

C. las Bartolinas, Nay.

-104.69

21.12

Andesite

K/Ar

WR

1.40

0.28

Ferrari et al., in prep.

























W 1

C. Chicharron (RGS)

-103.42

20.90

Rhyolite

K/Ar

San

1.39

0.50

Spinnler et al., 1993

























AZ 82

Cerro Cuate, Mich.

-100.75

19.84

Rhyolite

K/Ar

WR

1.39

0.05

Pradal and Robin, 1994

























CHP 538

S. Cruz de las Flores

-103.52

20.48

Andesite

K/Ar




1.39

0.43

Delgado et al., 1995

























KA 4287

NE Chapala, Guad.

-103.13

20.49

Basalt

K/Ar

WR

1.37

0.20

Gilbert et al. 1985

























Jal 6

Santa Rosa, Jal.

-103.72

20.88

Alk.-Basalt

K/Ar

WR

1.34

0.20

Nieto-Obregón et al. 1985

























M 231

Cantaro Complex, Col.

-103.71

19.71

Dacite Ho

K/Ar

Bio

1.33

0.20

Allan 1986

























AZ 11

Ucareo, Mich.

-100.69

19.85

Rhyolite

K/Ar

WR

1.31

0.04

Pradal and Robin, 1994

























Cl 48

N S. Marcos, Gua.

-103.53

20.35

Andesite

K/Ar

WR

1.31

0.19

Allan 1986

























Pu 7

Volcan Grande, Puruandiro

-101.61

20.10

Basalt

K/Ar

WR

1.30

0.10

Pasquarè et al., 1991



















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