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Death Valley bright spot: A midcrustal magma body in the southern Great Basin, California?
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1986
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VolcanologyDeath ValleyEngineeringVolcanismContinental TectonicsNew York 14853Earth ScienceRegional GeologyGeological DataMesozoic TectonicsRegional TectonicsMidcrustal Magma BodyMagmatismGeographyGeologyTectonicsStructural GeologyEconomic GeologyEarth SciencesBright SpotOrogenyPetrologySouthern Great Basin
Research Article| January 01, 1986 Death Valley bright spot: A midcrustal magma body in the southern Great Basin, California? Beatrice de Voogd; Beatrice de Voogd 1Department of Geological Sciences and Institute for the Study of the Continents Cornell University, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar Laura Serpa; Laura Serpa 1Department of Geological Sciences and Institute for the Study of the Continents Cornell University, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar Larry Brown; Larry Brown 1Department of Geological Sciences and Institute for the Study of the Continents Cornell University, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar Ernest Hauser; Ernest Hauser 2Institute for the Study of the Continents, Cornell Universily, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar Sidney Kaufman; Sidney Kaufman 3Department of Geological Sciences and Institute for the Study of the Continents Cornell University, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar Jack Oliver; Jack Oliver 3Department of Geological Sciences and Institute for the Study of the Continents Cornell University, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar Bennie W. Troxel; Bennie W. Troxel 4Department of Geology, University of California, Davis, California 95616 Search for other works by this author on: GSW Google Scholar James Willemin; James Willemin 5Institute for the Study of the Continents, Cornell University, Ithaca, New York 14853 Search for other works by this author on: GSW Google Scholar Lauren A. Wright Lauren A. Wright 6Department of Geosciences, Pennsylvania State University, University Park, Pennsylvania 16802 Search for other works by this author on: GSW Google Scholar Geology (1986) 14 (1): 64–67. https://doi.org/10.1130/0091-7613(1986)14<64:DVBSAM>2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Beatrice de Voogd, Laura Serpa, Larry Brown, Ernest Hauser, Sidney Kaufman, Jack Oliver, Bennie W. Troxel, James Willemin, Lauren A. Wright; Death Valley bright spot: A midcrustal magma body in the southern Great Basin, California?. Geology 1986;; 14 (1): 64–67. doi: https://doi.org/10.1130/0091-7613(1986)14<64:DVBSAM>2.0.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 SocietyGeology Search Advanced Search Abstract A previously unrecognized midcrustal magma body may have been detected by COCORP deep seismic reflection profiles in the Death Valley region of the southern Great Basin. High-amplitude, relatively broad-band reflections at 6 s (15 km) are attributed to partially molten material within a subhorizontal intrusion. This "bright spot" extends laterally at least 15 km beneath central Death Valley. A moderately dipping normal fault can be traced from the inferred magma chamber upward to a 690 000-yr-old basaltic cinder cone. The fault zone is inferred to have been a magma conduit during the formation of the cinder cone. Vertical variations in crustal reflection character suggest that the Death Valley magma body may have been emplaced along a zone of decoupling that separates a faulted brittle upper crust from a more ductile and/or intruded lower crust. The Death Valley bright spot is similar to reflections recorded by COCORP in 1977 in the Rio Grande rift, where both geophysical and geodetic evidence support the inference of a tabular magma chamber at 20-km depth. 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.