Geochemistry of tertiary igneous rocks from Arandas-Atotonilco área, northeast Jalisco, Mexico.

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Published: Jan 1, 1985
DOI: https://doi.org/10.22201/igeof.00167169p.1985.24.1.1064
Keywords:
Geochemistry Igneous rocks Tertiary Arandas-Atotonilco Jalisco-Mexico

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S. P. Verma
Universidad Nacional Autónoma de México, Instituto de Geofísica, Ciudad Universitaria, Delegación Coyoacán, 04510, Mexico City, México ; arlier publications of the author are also under the name of S. Pal. Present address: Departamento de Geotermia, División de Fuentes de Energía, Instituto de Investigaciones Eléctricas, Apartado Postal 475, Cuernavaca, Mor. 62000 México.
M. Lopez Martinez
Universidad Nacional Autónoma de México, Instituto de Geofísica, Ciudad Universitaria, Delegación Coyoacán, 04510, Mexico City, México ; Present address: Department of Physics, University of Toronto, Ontario, M5S IA 7, Canada
D. J. Terrell
Universidad Nacional Autónoma de México, Instituto de Geofísica, Ciudad Universitaria, Delegación Coyoacán, 04510, Mexico City, México

Abstract

Major element analyses for ten samples of basalt and andesite, selected one each from ten paleomagnetic sites in northeast Jalisco, Mexico are presented. K-Ar dates and REE data on four samples and contents of alkali (K, Rb and Cs) and alkaline earth (Ba and Sr) elements and 87Sr 86Sr ratios on eight samples are also reported. Evidence of volcanic activity at about 11 Ma is shown. Initial 87Sr/86Sr ratios range from O. 7033 to O. 7039 and are not correlated with major or trace elements or element ratios. 87Sr/86Sr ratios are similar to those observed in other areas of the Mexican Volcanic Belt and are compatible with a sub-crustal origin for the Jalisco magmas.

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How to Cite
Verma, S. P., Lopez Martinez, M., & Terrell, D. J. (1985). Geochemistry of tertiary igneous rocks from Arandas-Atotonilco área, northeast Jalisco, Mexico. Geofisica Internacional, 24(1), 31–45. https://doi.org/10.22201/igeof.00167169p.1985.24.1.1064
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Vol. 24 No. 1 (1985): January 1, 1985
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