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Upper crustal structure of the western Colombian Basin, Caribbean Sea

1988; Geological Society of America; Volume: 100; Issue: 4 Linguagem: Inglês

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

1943-2674

Christopher L. Bowland, Eric Rosencrantz,

Oil and Gas Production Techniques

Research Article| April 01, 1988 Upper crustal structure of the western Colombian Basin, Caribbean Sea CHRISTOPHER L. BOWLAND; CHRISTOPHER L. BOWLAND 1Institute for Geophysics, The University of Texas at Austin, Austin, Texas 78759-8345 Search for other works by this author on: GSW Google Scholar ERIC ROSENCRANTZ ERIC ROSENCRANTZ 1Institute for Geophysics, The University of Texas at Austin, Austin, Texas 78759-8345 Search for other works by this author on: GSW Google Scholar GSA Bulletin (1988) 100 (4): 534–546. 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 MailTo Tools Icon Tools Get Permissions Search Site Citation CHRISTOPHER L. BOWLAND, ERIC ROSENCRANTZ; Upper crustal structure of the western Colombian Basin, Caribbean Sea. GSA Bulletin 1988;; 100 (4): 534–546. 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 Multichannel seismic reflection profiles show that most of the western Colombian Basin is underlain by a large oceanic plateau. The crust of this plateau has a smooth upper surface, an oceanic velocity structure, and a thickness at least twice that of typical oceanic crust. Locally well defined reflections within the plateau crust are related to layered basalt flows and interbedded sediments. A mounded reflection pattern within acoustic basement at the crest of the plateau (Mono Rise) may represent volcanic knolls. Smooth-surfaced basement of the western Colombian Basin is probably equivalent to the Upper Cretaceous basement complex below seismic reflection horizon B″ in the central Venezuelan Basin and resembles the basements of some Cretaceous oceanic plateaus and aseismic rises in the western Pacific. An area of apparently typical oceanic crust lies adjacent to the Colombian Basin plateau and may represent relatively unmodified oceanic crust upon which the plateau was constructed. Reflections within the flank of the Colombian Basin plateau appear to overlap this crust, indicating that the plateau is younger than the oceanic crust. Oceanic plateau crust extends to Panama and Costa Rica without apparent structural break and may be continuous with the basement complex of southern Central America. 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.