A mineralogical and geochemical analysis of basaltic lavas from the Zion National Park Region, Southwestern Utah

Price, Jason R. (Jason Rodney)

Publication date

January 1990

Publisher

Northern Illinois University

Abstract

Includes bibliographical references.In the Transition zone of southwestern Utah, basaltic lavas are geochemically defined as a subduction suite and a plume suite. These predominantly basic lavas are late Cenozoic (<17 Ma) in age, with the two suites related in time and space. This paper suggests a two layer upper mantle model, an upper metasomatized lithospheric layer underlain by an asthenospheric layer, with both alkali basaltic and olivine tholeiitic magmas being generated by varying degrees of partial melting of spinel lherzolite in each individual layer. Due to the greater depth at which asthenospheric magmas are derived, mixing occurs between the alkali basaltic and the olivine tholeiitic magmas during ascent through the lithosphere. ...

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A mineralogical and geochemical analysis of basaltic lavas from the Zion National Park Region, Southwestern Utah

Abstract

Extracted data

A mineralogical and geochemical analysis of basaltic lavas from the Zion National Park Region, Southwestern Utah

Abstract

Extracted data

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