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Geology, geochronology, and geochemistry of the Miocene-Pliocene Ancestral Cascades arc, northern Sierra Nevada, California and Nevada: The roles of the upper mantle, subducting slab, and the Sierra Nevada lithosphere

Abstract:

The assemblage of ca. 28-3 Ma volcanic rocks exposed in the Lake Tahoe-Reno region of the northern Sierra Nevada, United States, is interpreted to be part of the Ancestral Cascades volcanic arc. The volcanic rocks are commonly highly porphyritic, including abundant plagioclase with clinopyroxene, amphibole, and rare biotite, and range from basaltic andesite to dacite in composition. Less common are poorly phyric, olivine- and clinopyroxene-bearing basalts and basaltic andesites. Porphyritic l...

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Publication status:
Published

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Publisher copy:
10.1130/GES00166.1

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Institution:
University of Oxford
Department:
Oxford, MPLS, Earth Sciences
Role:
Author
Journal:
GEOSPHERE
Volume:
4
Issue:
5
Pages:
829-853
Publication date:
2008-10-05
DOI:
EISSN:
1553-040X
ISSN:
1553-040X
URN:
uuid:82567866-0dc0-4a4e-a9b7-26b2516d3452
Source identifiers:
184811
Local pid:
pubs:184811
Language:
English

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