Journal ArticleDOI
Amphibole-bearing Cumulate Inclusions, Grand Canyon, Arizona and their bearing on Silica-Undersaturated Hydrous Magmas in the Upper Mantle
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This article is published in Journal of Petrology.The article was published on 1975-01-01. It has received 70 citations till now. The article focuses on the topics: Amphibole & Canyon.read more
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Petrogenetic implications of Ti, Zr, Y, and Nb variations in volcanic rocks
TL;DR: In this paper, a table of mineral-liquid distribution coefficients for Ti, Zr, Y, and Nb for basic, intermediate and acid melt compositions were used to interpret variations of these elements, first in basalts and second during fractional crystallization from basic to acid magmas.
Journal ArticleDOI
Characteristics and tectonic significance of supra subduction zone ophiolites
TL;DR: Supra-subduction zone ophiolites have the geochemical characteristics of island arcs but the structure of oceanic crust and are thought to have formed by sea-floor spreading directly above subducted oceanic lithosphere.
Journal Article
Aluminum in hornblende; an empirical igneous geobarometer
Jane M. Hammarstrom,E-an Zen +1 more
Journal ArticleDOI
Ultramafic inclusions from San Carlos, Arizona: Petrologic and geochemical data bearing on their petrogenesis
Frederick A. Frey,Martin Prinz +1 more
TL;DR: In this article, the authors classified ultramafic inclusions from San Carlos, Arizona into two groups: Group I inclusions are dominated by magnesian (Mg/Mg + ΣFe= 0.86-0.91), olivine-rich peridotites containing Cr-rich clinopyroxene and spinel.
Journal ArticleDOI
Lateral variation in upper mantle viscosity: role of water
TL;DR: In this paper, geochemical data on the water contents of western US lavas and mantle xenoliths, compared these data to water solubility in olivine, and calculate the corresponding effective viscosity of olivines, the major constituent of the upper mantle, using a power law creep rheological model.
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Ultramafic inclusions from San Carlos, Arizona: Petrologic and geochemical data bearing on their petrogenesis
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Tectonic setting of basic volcanic rocks determined using trace element analyses
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