• journal_title：Geology
• Contributor：J. Casey Moore ; Adam Klaus ; Nathan L. Bangs ; Barbara Bekins ; Christian J. Bücker ; Warner Brückmann ; 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 ; Tomochika Tokunaga
• Publisher：Geological Society of America
• Date：1998-
• Format：text/html
• Language：en
• Identifier：10.1130/0091-7613(1998)026<0811:CPDIAE>2.3.CO;2
• journal_abbrev：Geology
• issn：0091-7613
• volume：26
• issue：9
• firstpage：811

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.