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



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0.60

McDowell & Keitzer, 1977




























Llano de Lobos, Oax.







Ignimbrite

K/Ar

WR

29.50




Ferrusquia & McDowell, unpub.

























JAG 1

Casas Tepetate, SLP

-101.27

22.04

Rhyolite

K/Ar

Bio

29.20

0.80

Aguillon-Robles et al., 1994

























RK 14 F

Rio Mimbres, Dgo.

-104.95

23.90

Ignimbrite

K/Ar

Feld

29.20

0.70

McDowell & Keitzer, 1977

























Ped Zac 3

Cerro Caballos, Zac.

-103.18

21.77

Ignimbrite

K/Ar

San

29.15

0.60

Nieto-Obregón et al. 1981

























2-71-2 F

Rio Mimbres, Dgo.

-104.97

23.89

Ignimbrite

K/Ar

Feld

29.10

0.60

McDowell & Keitzer, 1977

























*

La Cantera, SLP

-101.03

21.91

Ignimbrite

K/Ar

WR

29.00

1.50

Labarthe-Hernandez et al., 1982





































Andesite

K/Ar

WR

29.00

2.00

IMP, UNPUBLISHED




























Stgo. Yuquita, Oax.







Ignimbrite

K/Ar

San

29.00




Moran-Zenteno et al. unpub.

























EN 3

B. Juarez, Hgo.

-99.15

19.32

Basalt

K/Ar

WR

28.94

1.00

Jacobo-Albarrán, 1986

























3-71-1 F

Rio Mimbres, Dgo.

-104.97

23.89

Ignimbrite

K/Ar

Feld

28.90

0.60

McDowell & Keitzer, 1977

























RK 15 F

El Soldado, Dgo.

-104.95

23.90

Ignimbrite

K/Ar

Feld

28.80

1.10

McDowell & Keitzer, 1977

























RK 2 F

Cerro Garavito, Dgo.

-104.77

23.97

Ignimbrite

K/Ar

Feld

28.70

0.60

McDowell & Keitzer, 1977

























AMC-07

N of S. Miguel Allende, Gto.

-100.87

20.87

Ignimbrite

K/Ar

San

28.60

0.70

Nieto-Samaniego et al., 1996

























EN 178

South of Zitacuaro, Mich.

-100.26

19.10

Latite

K/Ar

WR

28.60

3.00

Jacobo-Albarrán, 1986

























JL 1 R

Mesa Caleras, Dgo.

-104.59

24.12

Basalt

K/Ar

WR

28.60

0.50

McDowell & Keitzer, 1977

























RK 11 F

Rio Chico, Dgo.

-104.87

23.92

Ignimbrite

K/Ar

Feld

28.60

0.60

McDowell & Keitzer, 1977

























RK 1 F

Rio Chico, Dgo.

-104.88

23.93

Ignimbrite

K/Ar

Feld

28.50

1.50

McDowell & Keitzer, 1977

























3-71-10

Coyotitan, Sin.

-106.55

23.80

Ignimbrite

K/Ar

Bio

28.30

0.70

Henry & Fredrikson, 1987

























RK 3 F

15 km S of Durango, Dgo.

-104.67

23.92

Ignimbrite

K/Ar

Feld

28.30

0.60

McDowell & Keitzer, 1977

























RK 4 P

16 km S of Durango, Dgo.

-104.67

23.83

Ignimbrite

K/Ar

Pl

28.30

0.60

McDowell & Keitzer, 1977

























AMC-01

N of Leon, Gto.

-101.53

21.33

Ignimbrite

K/Ar

San

28.20

0.70

Nieto-Samaniego et al., 1996





































Andesite

K/Ar

WR

28.00

2.00

IMP, UNPUBLISHED





































Granite

K/Ar

Bio

28.00

2.00

IMP, UNPUBLISHED

























PedJal 16

Mesa El Mirador, Zac.

-102.77

21.07

Ignimbrite

K/Ar

Pl

28.00

1.20

Nieto-Obregón et al. 1981





































Ignimbrite

K/Ar

San

28.00

2.00

IMP, UNPUBLISHED

























1-70-1 B

Las Adjuntas, Dgo.

-105.50

23.74

Rhyolite

K/Ar

Bio

27.90

0.40

McDowell & Keitzer, 1977

























4-22-71 B

Las Adjuntas, Dgo.

-105.45

23.74

Rhyolite

K/Ar

Bio

27.70

0.40

McDowell & Keitzer, 1977

























SS-149

Sierra de Valdecañas, Zac.

-102.93

23.06

Ignimbrite

K/Ar

WR

27.70

0.60

Lang, 1988

























SS-227

Sierra de Valdecañas, Zac.

-102.94

23.12

Ignimbrite

K/Ar

WR

27.50

1.20

Lang, 1988

























IL 89 5

S of Teul, Zac.

-103.48

21.42

Ignimbrite

K/Ar

San

27.11

0.05

Moore et al., 1994





































Tonalite

K/Ar

Bio

27.00

2.00

IMP, UNPUBLISHED































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