Portal de Periódicos da CAPES

Structure of the central Death Valley pull-apart basin and vicinity from COCORP profiles in the southern Great Basin

1988; Geological Society of America; Volume: 100; Issue: 9 Linguagem: Inglês

10.1130/0016-7606(1988)100 2.3.co;2

1943-2674

Laura Serpa, B. de Voogd, Lauren Wright, James H. Willemin, Jack Oliver, Ernest C. Hauser, Bennie W. Troxel,

Geological Studies and Exploration

Research Article| September 01, 1988 Structure of the central Death Valley pull-apart basin and vicinity from COCORP profiles in the southern Great Basin LAURA SERPA; LAURA SERPA 1Institute for the Study of Continents and Department of Geological Sciences, Cornell University, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar BEATRICE DE VOOGD; BEATRICE DE VOOGD 1Institute for the Study of Continents and Department of Geological Sciences, Cornell University, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar LAUREN WRIGHT; LAUREN WRIGHT 2Department of Geosciences Pennsylvania State University, University Park, Pennsylvania 16802 Search for other works by this author on: GSW Google Scholar JAMES WILLEMIN; JAMES WILLEMIN 3Institute for the Study of Continents, Cornell University, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar JACK OLIVER; JACK OLIVER 1Institute for the Study of Continents and Department of Geological Sciences, Cornell University, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar ERNEST HAUSER; ERNEST HAUSER 3Institute for the Study of Continents, Cornell University, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar BENNIE TROXEL BENNIE TROXEL 4Department of Geology, University of California, Davis, California 95616 Search for other works by this author on: GSW Google Scholar Author and Article Information LAURA SERPA 1Institute for the Study of Continents and Department of Geological Sciences, Cornell University, Ithaca, New York 14853 BEATRICE DE VOOGD 1Institute for the Study of Continents and Department of Geological Sciences, Cornell University, Ithaca, New York 14853 LAUREN WRIGHT 2Department of Geosciences Pennsylvania State University, University Park, Pennsylvania 16802 JAMES WILLEMIN 3Institute for the Study of Continents, Cornell University, Ithaca, New York 14853 JACK OLIVER 1Institute for the Study of Continents and Department of Geological Sciences, Cornell University, Ithaca, New York 14853 ERNEST HAUSER 3Institute for the Study of Continents, Cornell University, Ithaca, New York 14853 BENNIE TROXEL 4Department of Geology, University of California, Davis, California 95616 Publisher: Geological Society of America First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (1988) 100 (9): 1437–1450. https://doi.org/10.1130/0016-7606(1988)100 2.3.CO;2 Article history First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation LAURA SERPA, BEATRICE DE VOOGD, LAUREN WRIGHT, JAMES WILLEMIN, JACK OLIVER, ERNEST HAUSER, BENNIE TROXEL; Structure of the central Death Valley pull-apart basin and vicinity from COCORP profiles in the southern Great Basin. GSA Bulletin 1988;; 100 (9): 1437–1450. doi: https://doi.org/10.1130/0016-7606(1988)100 2.3.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract COCORP deep seismic reflection profiles in the vicinity of the central Death Valley pull-apart basin in southeastern California provide three-dimensional information on the subsurface of an active extensional terrane. Variations in the orientation and density of reflectors indicate that the crust and upper mantle of the region is divisible into three seismic zones which may represent regions of differing lithology, rheology, or both. The reflections in the upper ∼5 s (15 km) of the data have gentle to moderate dips; between 5 and 10 s, reflections are predominantly subhorizontal; and below ∼ 10 s (30 km), there are no notable reflections. The boundaries between the above reflecting zones are marked by prominent reflecting horizons which are continuous throughout the survey region.The observed reflection geometries resemble those predicted by the crustal model of the region proposed by Wright and Troxel (1973) on the basis of geological studies. In addition, many of the upper-crustal reflectors can be traced directly to mapped features. Based on those correlations, the upper reflecting zone (0-5 s) is interpreted to be a region of brittle deformation with the various upper-crustal reflectors interpreted as faults and basin sediments. The reflecting horizon at the base of the upper zone appears to be the lower boundary of the faulted upper crustal blocks and, it has been suggested that it locally includes partially molten rock. The observed geometries and amplitudes of reflections from the lower crust (15-30 km depth or 5-10 s two-way traveltime) are consistent with the model of Wright and Troxel for a ductilely deformed and intruded lower crust. The prominent reflecting horizon at the base of that zone is designated the reflection Moho and the seismically transparent lowest zone appears to correspond to the upper mantle.The seismic data define a zone of faults (referred to here as the "Wingate Wash fault zone") which appears to form the southern boundary of the central Death Valley basin and also may have provided a conduit for the migration of magma from a mid-crustal magma body to the surface. The Wingate Wash fault zone appears to intersect the southern Death Valley fault zone and the frontal faults of the Black Mountains in the subsurface beneath the youngest volcanic edifice in the region. Those three fault zones appear to separate the Panamint, Owlshead, and Black Mountain upper-crustal fault blocks. From the available data, a reconstruction of the possible fault-block movements during the time of basin subsidence is presented. That reconstruction suggests that the central Death Valley basin formed as a result of the combined down-to-the-east rotation and northwest translation of the fault blocks in manner similar to that proposed by Reches for other parts of the Basin and Range. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.