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4. Consolidation patterns during initiation and evolution of a plate-boundary decollement zone: Northern Barbados accretionary prism

Author

Moore, J. Casey, Klaus, Adam, Bangs, Nathan L., Bekins, Barbara, Bucker, Christian J., Bruckmann, Warner, Erickson, Stephanie N., Hansen, Olav, Horton, Thomas, Ireland, Peter, Major, Candace Olson, Moore, Gregory F., Peacock, Sheila, Saito, Saneatsu, Screaton, Elizabeth J., Shimeld, John W., Stauffer, Philip Henry, Taymaz, Tuncay, Teas, Philip A., and Tokunaga, Tomochika

Subjects
Barbados -- Natural history, Surfaces, Deformation of -- Research, Plate tectonics -- Research, Rock deformation -- Research, Earth sciences
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.

Published
1998

8. Consolidation patterns during initiation and evolution of a plate-boundary decollement zone: Northern Barbados accretionary prism

Author

Casey Moore, J., primary, Klaus, Adam, additional, Bangs, Nathan L., additional, Bekins, Barbara, additional, Bücker, Christian J., additional, Brückmann, Warner, additional, Erickson, Stephanie N., additional, Hansen, Olav, additional, Horton, Thomas, additional, Ireland, Peter, additional, Major, Candace Olson, additional, Moore, Gregory F., additional, Peacock, Sheila, additional, Saito, Saneatsu, additional, Screaton, Elizabeth J., additional, Shimeld, John W., additional, Henry Stauffer, Philip, additional, Taymaz, Tuncay, additional, Teas, Philip A., additional, and Tokunaga, Tomochika, additional

Published
1998
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