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Ancient buried submarine trough, northwest Gulf of Mexico

January 1, 1981

A large buried submarine trough crosses the seaward margin of the continental shelf off the southwest coast of Louisiana. Original length was about 90 km, and width at the shelf edge was 16 km. Maximum eroded depth may have been as much as 305 m. Seismic characteristics of the prograded fill indicate cyclically repeated sequences of retrogressive deltaic and partly slumped sediments overlain by well-layered transgressive deposits. Slumping was increasingly prevalent toward the shelf edge. The cyclic sequences indicate that the trough was a passageway for large volumes of sediment onto the continental slope during several stages of lowered sea level. ?? 1981 A.M. Dowden, Inc.

Publication Year 1981
Title Ancient buried submarine trough, northwest Gulf of Mexico
DOI 10.1007/BF02463326
Authors H. L. Berryhill
Publication Type Article
Publication Subtype Journal Article
Series Title Geo-Marine Letters
Index ID 70012060
Record Source USGS Publications Warehouse