Geochemical constraints on the origin of calcalkaline and alkaline magmas of the eastern Trans-Mexican Volcanic Belt

Th. Besch; J. F. W. Negendank; R. Emmermann; H. J. Tobschall

doi:10.22201/igeof.00167169p.1988.27.4.813

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Published: Oct 1, 1988

DOI: https://doi.org/10.22201/igeof.00167169p.1988.27.4.813

Keywords:

Geochemistry, alkaline magmas, calcoalkaline magmas, Trans-Mexican Volcanic Belt

Th. Besch

Universität Mainz, Institut für Geowissenschaften, Lehreinheit Mineralogie, 6500 Mains (FRG)

J. F. W. Negendank

Universität Trier, Abt. Geologie, 5500 Triet (FRG)

R. Emmermann

Universität Giessen, Institut für Geowissenschaften und Lithosphärenforschung, 6300 Giessen (FRG)

H. J. Tobschall

Universität Hannover, Institut für Mineralogie, 3000 Hannover (FRG)

Abstract

This paper presents major, trace and rare earth element data for calcalkaline and alkaline rocks from the Eastern Trans-Mexican Volcanic Belt (TMVB) and speculates upon their origin and geotectonic significance. Andesites and dacites show geochemical characteristics that preclude their derivation from the basaltic magmas by crystal fractionation. The distribution patterns of the LIL-and HFS-elements are interpreted as indicative of magma formation in a subduction-modified upper mantle. The rhyolites are interpreted as partial melts of the continental crust.

How to Cite

Besch, T., Negendank, J. F. W., Emmermann, R., & Tobschall, H. J. (1988). Geochemical constraints on the origin of calcalkaline and alkaline magmas of the eastern Trans-Mexican Volcanic Belt. Geofisica Internacional, 27(4), 641–663. https://doi.org/10.22201/igeof.00167169p.1988.27.4.813

Issue

Vol. 27 No. 4 (1988): Octubre 1, 1988

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Article

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Author Biographies

Th. Besch, Universität Mainz, Institut für Geowissenschaften, Lehreinheit Mineralogie, 6500 Mains (FRG)

J. F. W. Negendank, Universität Trier, Abt. Geologie, 5500 Triet (FRG)

R. Emmermann, Universität Giessen, Institut für Geowissenschaften und Lithosphärenforschung, 6300 Giessen (FRG)

H. J. Tobschall, Universität Hannover, Institut für Mineralogie, 3000 Hannover (FRG)

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