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Showing 1 to 7 of 7 for “"southeastern California"”.
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Petrogenesis of the reversely zoned Turtle pluton, Southeastern California
… geologic literature. The Turtle pluton of S.E. California is an intrusion composed of a granitic rim and granodioritic core and common microgranitoid enclaves. Field observations, mineral textures, and chemistries, major and trace element geochemistry, and isotopic variability support a …
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Structural evolution of crystalline lower plate rocks, Central Sacramento Mountains, Southeastern California
… in the Colorado River extensional corridor of southeastern California, contains complex lithologic and structural relationships. Detailed mapping and petrographic analysis of lower plate rocks from the central part of the range show that three deformation events have been recorded. An …
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Stratigraphic and structural evolution of the early Diligencia Basin, Orocopia Mountains, Southeastern California
… located in the eastern Orocopia Mountains of southeastern California. These deposits exhibit characteristics which may link them to tectonic processes diagnostic of both the Basin and Range physiographic province of North America, and the Transverse Ranges province of California. These …
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Magmatism, Deformation And Mesothermal Metasomatism: Interpretation Of Aluminosilicate Mineral Assemblages In The Cargo Muchacho Mountains, Southeastern California
… western flank of the Cargo Muchacho Mountains, southeastern California. The aluminosilicate mineral assemblages are shallow-dipping tabular zones locally more than 100 m in total thickness. From bottom to top, they are: (a) the Feldspar Zone, with …
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Controlling factors on Mesozoic and Cenozoic metamorphism and deformation in the Maria Fold and Thrust Belt and Colorado River Extensional Corridor, Southeastern California and Western Arizona
The Maria Fold and Thrust Belt (MFTB) and Colorado River Extensional Corridor (CREC) were the sites of atypically extreme compression in Mesozoic time and extension in Cenozoic time, respectively. The orientations of these deformational structures are at odds with the Sevier and Laramide thrust …
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From neglected waste to protected space: An administrative history of Mojave National Preserve
… National Park Service, was created in 1994 in southeastern California. Its 1.6 million acres were used historically for extractive industries such as mining and ranching, and its recent history was shaped by the land's proximity to urban Los Angeles. The preserve was the fruit of a long …
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Mesozoic tectonics of the Maria fold and thrust belt and McCoy basin : an examination of polyphase deformation and synorogenic response
… Belt and McCoy Basin tectonic provinces of southeastern California. We also present new geologic mapping, structural analysis from macroscopic to microscopic scale, U-Pb zircon ages and Ar-Ar hornblende and biotite ages from key areas in the Maria Fold and Thrust Belt and McCoy Basin to …