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Geochemical constraints on magma processes in a peralkaline system - The Paisano volcano, west TexasPetrographic and trace element data from a continuous stratigraphic sequence of flows from the peralkaline Paisano Volcano in west Texas are used to delineate magnetic processes responsible for the chemical evolution of this volcano. It is shown that crystal fractionation of the phenocrystic assemblage explains the main compositional variation, but magma mixing of a less evolved melt composition also affected the chemical evolution of the volcano.
Document ID
19850051717
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Mcdonough, W. F.
(Australian National University Canberra, Australia; Sul Ross State University, Alpine, TX, United States)
Nelson, D. O.
(Sul Ross State University Alpine, TX, United States)
Date Acquired
August 12, 2013
Publication Date
December 1, 1984
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 48
ISSN: 0016-7037
Subject Category
Geophysics
Accession Number
85A33868
Funding Number(s)
CONTRACT_GRANT: NASW-3389
Distribution Limits
Public
Copyright
Other

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