Physiographic and bathymetric characteristics of the continental slope,northwest Gulf of Mexico |
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| Authors: | William R Bryant John R Bryant Mary H Feeley Gregory R Simmons |
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| Institution: | (1) Texas A&M University, 77843 College Station, TX, USA;(2) 1306 Morrison, 77009 Houston, TX, USA;(3) Exxon Production Research Co., 77252-2189 Houston, TX, USA |
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| Abstract: | Bathymetric charts of the continental slope of the northwestern Gulf of Mexico reveal the presence of over 90 intraslope basins
with relief in excess of 150 m. The evolution and the general configuration of the basins are a function of halokinesis of
allochthonous salt. Intraslope-interlobal and intraslope-superlobal basins occupy the upper and lower continental slope, respectively.
Other structures on the slope associated with salt tectonics are the Sigsbee Escarpment, the seaward edge of the Sigsbee salt
nappe, and the Alaminos and Keathley canyons. Major erosional features are the Mississippi Canyon and portions of a submarine
canyon on the southern extreme of the Sigsbee Escarpment. |
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