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GEOREF RECORD

Consolidation patterns during initiation and evolution of a plate-boundary decollement zone; northern Barbados accretionary prism

J. Casey Moore, Adam Klaus, Nathan L. Bangs, Barbara A. Bekins, Christian J. Buecker, Warner Brueckmann, Stephanie N. Erickson, Olav Hansen, Thomas Horton, Peter Ireland, Candace Olson Major, Gregory F. Moore, Sheila Peacock, Saneatsu Saito, Elizabeth J. Screaton, John W. Shimeld, Philip Henry Stauffer, Tuncay Taymaz, Philip A. Teas and Tomochika Tokunaga
Consolidation patterns during initiation and evolution of a plate-boundary decollement zone; northern Barbados accretionary prism
Geology (Boulder) (September 1998) 26 (9): 811-814

Abstract

Borehole logs from the northern Barbados accretionary prism show that the plate-boundary decollement initiates in a low-density radiolarian claystone. With continued thrusting, the decollement zone consolidates, but in a patchy manner. The logs calibrate a three-dimensional seismic reflection image of the decollement zone and indicate which portions are of low density and enriched in fluid, and which portions have consolidated. The seismic image demonstrates that an underconsolidated patch of the decollement zone connects to a fluid-rich conduit extending down the decollement surface. Fluid migration up this conduit probably supports the open pore structure in the underconsolidated patch.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 26
Serial Issue: 9
Title: Consolidation patterns during initiation and evolution of a plate-boundary decollement zone; northern Barbados accretionary prism
Affiliation: University of California at Santa Cruz, Earth Sciences Department, Santa Cruz, CA, United States
Pages: 811-814
Published: 199809
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 23
Accession Number: 1998-058249
Categories: Solid-earth geophysicsOceanography
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., sketch map
N15°30'00" - N15°37'60", W58°46'00" - W58°37'00"
Secondary Affiliation: Ocean Drilling Program, USA, United StatesUniversity of Texas at Austin, USA, United StatesU. S. Geological Survey, USA, United StatesNiedersaechsisches Landesamt fuer Bodenforschung Geowissenschaftliche, DEU, Federal Republic of GermanyChristian-Albrechts-Universitaet, DEU, Federal Republic of GermanyUniversity of Utah at Salt Lake City, USA, United StatesSTATOIL, NOR, NorwayAnadrill Schlumberger, USA, United StatesLamont-Doherty Earth Observatory, USA, United StatesUniversity of Hawaii, USA, United StatesUniversity of Birmingham, GBR, United KingdomUniversity of Tokyo, JPN, JapanUniversity of Florida at Gainesville, USA, United StatesDalhousie University, CAN, CanadaIstanbul Teknik Universitesi, TUR, Turkey
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 199821
Program Name: USGSOPNon-USGS publications with USGS authors
Program Name: ODPOcean Drilling Program
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