Structure of continental margin of Gulf coast of United States.

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dc.acquisition-srcen_US
dc.call-noen_US
dc.contract-noen_US
dc.contributor.authorUchupi, E.en_US
dc.contributor.authorEmery, K.O.en_US
dc.contributor.otherAmerican Association of Petroleum Geologists Bulletinen_US
dc.date.accessioned2010-02-15T16:48:44Z
dc.date.available2010-02-15T16:48:44Z
dc.date.issued1968en_US
dc.degreeen_US
dc.descriptionp. 1162 - 1193.en_US
dc.description-otheren_US
dc.description.abstractContinuous seismic-reflection profiles were recorded along 15 lines across the continental margin of the Gulf of Mexico. The steep slopes off Florida and Yucatan (Florida and Campeche escarpments) appear to have been formed by construction of coral or algal reefs during the Cretaceous Period. The adjacent upper continental slope and continental shelf were formed by prograding and upbuilding of largely calcareous sediments after the death of the Cretaceous reef-building organisms. Off Louisiana, Texas, and part of Mexico the upper continental slope and the continental shelf were formed by progradation and upbuilding of terrigenous sediment contributed largely by the Mississippi River during the Tertiary Period. These Sediments buried deeply much of the structure off Louisiana and Texas resulted from contemporaneous intrusion of salt diapirs. Sediments in the basins between the diapirs were derived partly from the tops of the nearby salt intrusives. The Sigsbee escarpment at the seaward edge of the sedimentary prism off Louisiana and Texas is bordered by a broad ridge of diapirs, to which it may owe its origin. Although diapiric structures are best known north of the sigsbee escarpment, others are present on the south, at the center of the Gulf basin, and as far south as Golfo de Campeche. During Early Cretaceous time the reef once almost surrounded Gulf of Mexico, probably leaving only one narrow connection with the open ocean at the southeast. The narrow opening and the low relative sea level, indicated by reef structure and calcareous algae nearly 3,000 m below present sea level, suggest that water circulation was restricted during Early Cretaceous time. If it had been somewhat more restricted earlier, conditions could have been suitable for the wide-spread deposition of Late Triassic to Middle Jurassic salt that later fed the Diapiric structures.en_US
dc.description.urihttp://gbic.tamug.edu/request.htmen_US
dc.geo-codeNorthwestern Gulf of Mexicoen_US
dc.historyen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/18939
dc.latitudeen_US
dc.locationNOT AVAILABLE IN-HOUSE.en_US
dc.longitudeen_US
dc.notesen_US
dc.placeen_US
dc.publisheren_US
dc.relation.ispartofseries1200.00en_US
dc.relation.urien_US
dc.scaleen_US
dc.seriesen_US
dc.subjectgeologyen_US
dc.subjectgeological structuresen_US
dc.subjectgeological historyen_US
dc.subjectsedimentsen_US
dc.subjectreefsen_US
dc.subjectseismic reflection profilesen_US
dc.subjectcontinental marginsen_US
dc.titleStructure of continental margin of Gulf coast of United States.en_US
dc.typeArticleen_US
dc.universityen_US
dc.vol-issue52en_US

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