From deep to modern time along the western Sierra Nevada Foothills of California, San Joaquin to Kern River drainages
Jason Saleeby, Zorka Saleeby, Frank Sousa, 2013. "From deep to modern time along the western Sierra Nevada Foothills of California, San Joaquin to Kern River drainages", Geologic Excursions from Fresno, California, and the Central Valley, Keith Putirka
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This two day field trip presents an overview of ~500 m.y. of diverse geologic history along the southwestern Sierra Nevada Foothills, with focus on several profound geologic features that distinguish this part of the western foothills. These features include (1) a highly deformed oceanic Moho section through the Kings River ophiolite, interpreted as a Carboniferous abyssal core complex; (2) Permo-Carboniferous ophiolitic mélange interpreted to have formed and been emplaced along the SW Cordilleran edge transform, along which the early Mesozoic convergent margin initiated; (3) Early Cretaceous mafic rocks of the western Sierra Nevada batholith, which also characterize much of the Great Valley basement; (4) evidence for 1000-m-scale paleo-relief of Late Cretaceous age; (5) anomalous subsidence of the Tulare subbasin of the Great Valley as an expression of ongoing mantle lithosphere delamination; and (6) the Kern arch and Kern range front epeirogenic uplift as an expression of active mantle lithosphere delamination.
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In this volume we present seven field trip guides that span the breadth of the geology of central California. The trips are associated with the 2013 Cordilleran Section meeting of the Geological Society of America, convened in Fresno, California. These trips provide guides to some of the most remarkable of geologic localities, which are not only iconic, but form type examples of key geologic phenomena and include Yosemite National Park, the San Andreas fault, the Franciscan complex, and the Sierra Nevada Foothills near Fresno, California. The topics covered by these field trips include the nature of continental transform faults, the initiation of subduction, the origin of the Sierra Nevada batholith, the initiation of the Sierra Nevada arc, Pleistocene vertebrate fossils of the Central Valley, and debris flows triggered from burned watersheds.