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Neogene stratigraphy of the Fish Creek-Vallecito section, southern California : implications for early history of the northern Gulf of California and Colorado DeltaWinker, Charles David, 1952- January 1987 (has links)
The Fish Creek-Vallecito section is the most stratigraphically complete and structurally intact Neogene exposure in the Salton Trough, and thus provides a useful reference section for regional stratigraphie revision and historical interpretation of the early Gulf of California and Colorado Delta. The section comprises a marine sequence (Imperial Formation) bracketed by nonmarine units (Split Mountain and Alverson Formations below, Palm Spring Formation and Canebrake Conglomerate above). Recognition of distinct suites of locally-derived and Colorado River-derived sediment, combined with sedimentological evidence, led to revision of this sequence in terms of informal members and geneticstratigraphic units: (1) pre-rift braided-stream deposits (2) syn-rift fanglomerates and volcanics, with local pre-marine evaporites; (3) pre-deltaic marine units, deposited primarily as small fan deltas; a progradational sequence of the ancestral Colorado delta, consisting of (4) an upward-shoaling marine sequence, and (5) a nonmarine deltaplain sequence; (6) lacustrine units; and (7) locally-derived basinmargin alluvium that interfingers with (4), (5) and (6). Neogene palinspastic base maps for paleogeographic mapping were based on displacement histories for the Pacific-North American plate boundary and its constituent faults. The tectonic-sedimentary history consists of: (1) early to middle Miocene rifting that propagated southward from southern California to the Gulf mouth; (2) northward marine transgression of the rift basin, reaching southern California by the late Miocene; (3) development of the San Andreas-Gulf of California transform boundary by inboard transfer of intraplate slip; (4) earliest Pliocene initiation of the lower Colorado River and Delta by rapid epeirogenic uplift of the Bouse Embayment; and (5) late Pliocene or Pleistocene transpressive uplift in the western Salton Trough caused by outboard transfer of slip from the San Andreas fault. The stratigraphic succession in the western Salton Trough resulted largely from tectonic transport through a series of paleoenvironments anchored to the North American plate by the entry point of the Colorado River.
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Stratigraphy and structure of the Palen Formation, Palen Mountains, southeastern CaliforniaLeVeque, Richard Alan January 1981 (has links)
No description available.
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Structural geology of the upper Rock Creek area, Inyo County, California, and its relation to the regional structure of the Sierra NevadaTrent, D. D. January 1973 (has links)
No description available.
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TECTONIC SIGNIFICANCE OF THE MCCOY MOUNTAINS FORMATION, SOUTHEASTERN CALIFORNIA AND SOUTHWESTERN ARIZONAHarding, Lucy Elizabeth January 1982 (has links)
Poorly preserved fossil wood collected throughout the terrane had been the basis of a Cretaceous age assignment. New age constraints come from paleomagnetic data which fail the fold test at both regional and local levels. These data indicate that the paleomagnetism was produced by a post-folding metamorphic event. The resulting paleomagnetic pole at 58.9°N, 114.6°E falls on the North American apparent polar wander path very near a pole from the Callovian Summerville Formation. These data imply that Callovian is a minimum age for the metamorphism and that the proto1ith is older.
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Mid-Pleistocene to present stratigraphic responses in a tectonically-driven depositional setting: Eel River Basin, northern CaliforniaBurger, Robert Lawrence 28 August 2008 (has links)
Not available / text
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The formation of zoned metasomatic veins and massive skarn in dolomite, southern Sierra Nevada, CaliforniaMyers, Bruce Eric, 1956- January 1988 (has links)
No description available.
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Stress on the San Andreas fault: an analysis of shallow stress relief measurements made near Palmdale, California, 1979 and 1980Flaccus, Christopher Edward, 1953- January 1988 (has links)
No description available.
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Targeting early man sites in the western United States: An assessment of the Manix type section, central Mojave Desert, CaliforniaBudinger, Fred Emil 01 January 1992 (has links)
Geoarchaeology -- Pre-Clovis archaeology -- Site search strategies.
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Geology and geochronology of the Avawatz Mountains, San Bernardino County, CaliforniaSpencer, Jon Eric January 1981 (has links)
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Science, 1981. / Microfiche copy available in Archives and Science / Includes bibliographies. / by Jon Eric Spencer. / Ph.D.
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Geology of the Sugarloaf and Delamar Mountain areas, San Bernardino Mountains, CaliforniaCameron, Christopher Scott January 1981 (has links)
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1981. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND LINDGREN. / Bibliography: leaves 385-399. / by Christopher Scott Cameron. / Ph.D.
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