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GSA Memoirs
Peninsular Ranges Batholith, Baja California and Southern California
Author(s)
Douglas M. Morton;
Douglas M. Morton
U.S. Geological Survey and Department of Earth Sciences, University of California, Riverside, California 92521, USA
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Fred K. Miller
Fred K. Miller
U.S. Geological Survey, 904 West Riverside Ave., Spokane, Washington 99201, USA
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Geological Society of America

Volume
211
Copyright:
© 2014 Geological Society of America
Attribution:You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Noncommercial ‒ you may not use this work for commercial purpose. No Derivative works ‒ You may not alter, transform, or build upon this work. Sharing ‒ Individual scientists are hereby granted permission, without fees or further requests to GSA, to use a single figure, a single table, and/or a brief paragraph of text in other subsequent works and to make unlimited photocopies of items in this journal for noncommercial use in classrooms to further education and science.
ISBN print:
9780813712116
Publication date:
January 01, 2014
Book Chapter
Petrology and chemistry of the Green Acres gabbro complex near Winchester, Riverside County, California
Author(s)
Byron R. Berger
U.S. Geological Survey, Denver Federal Center, Denver, Colorado 80225-0046, USA
Byron R. Berger
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-
Published:January 01, 2014
The Cretaceous Green Acres layered igneous complex, northeast of Winchester, California, is composed of a suite of olivine- and hornblende-bearing gabbros in the Peninsular Ranges batholith within the Perris tectonic block. A consistent mineral assemblage is observed throughout the complex, but there is considerable textural and modal heterogeneity. Both preclude a consistent set of principles based on appearance and mineralogy on which to delineate map units. Distinct changes in the chemistry of olivine, pyroxene, and hornblende, however, serve to define discrete mappable units, and the complex has been divided into five geochemical map units on this basis.
Limited whole-rock data...
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Index Terms/Descriptors
- amphibole group
- anorthosite
- California
- chain silicates
- chemical composition
- clinoamphibole
- Cretaceous
- dikes
- emplacement
- fabric
- gabbros
- geochemistry
- hornblende
- igneous rocks
- intrusions
- layered intrusions
- lineation
- magmas
- Mesozoic
- mineral assemblages
- mineral composition
- North America
- orbicular texture
- Peninsular Ranges Batholith
- plate convergence
- plutonic rocks
- Riverside County California
- silicates
- structural analysis
- textures
- troctolite
- United States
- whole rock
- Perris Block
- Lakeview Mountains
- Winchester California
- Double Butte
- Green Acres Complex
Latitude & Longitude
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