Unstable Progradational Clastic Shelf Margins

Winker, Charles D.; Edwards, Marc B.

doi:10.2110/pec.83.06.0139

Cited by 61 publications

(33 citation statements)

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“…The paleo-shelf edge contains significant Y egua-age growth faults, and the up-dip edge of overpressured sediment (Winker and Edwards, 1983). Down dip of the shelf edge are sand bodies are located which are used for hydrocarbon extraction.…”

Section: Geologymentioning

confidence: 99%

Land Subsidence Along the Texas Gulf Coast Due to Oil and Gas Withdrawal

Khorzad¹

1999

Environ Geosci

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Land subsidence caused by groundwater withdrawal in the Houston–Galveston region is a well‐documented phenomenon. Subsidence of up to 3 m has been calculated in the region since 1905. Subsidence caused by hydrocarbon withdrawal is also a plausible cause of subsidence, where groundwater withdrawal has diminished and significant petroleum production has occurred for> 95 years. Sixteen fields were investigated by acquiring reservoir depressurization data near bore‐hole extensometers set up by the Houston–Galveston Coastal Subsidence District. All reservoirs were found to be well below hydrostatic pressure; a few of them were underpressured even before production began. Four oil and gas fields (the Mykawa, Satsuma, Dyersdale, and South Gillock) and three production zones (the Miocene, Frio, and Yegua) were used in a reservoir model and a boundary clay reservoir model to calculate subsidence. Subsidence under these fields is predicted to be as high as 0.44 m in a 19‐year period at the Satsuma field and as low as 0.02 m in a 22‐year period at the Dyersdale field. Implications of this study are (1) hydrocarbon production, although not the major contributor to most land surface subsidence in this area, does play a role; and (2) depressurization and, subsequently, subsidence from oil and gas fields may be regional and connected with other fields which is inferred from the fact that some fields were already underpressured before production began.

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Section: Geologymentioning

confidence: 99%

Land Subsidence Along the Texas Gulf Coast Due to Oil and Gas Withdrawal

Khorzad¹

1999

Environ Geosci

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“…It was the introduction of seismic surveying and drilling on features for oil and gas that changed the data base completely. Many investigators started to describe the highs and lows as being the result of halokinesis (e.g., Lehner 1969;Garrison and Martin 1973;Buffler and Worzel 1978;Humphris t978;Martin 1980;Winker and Edwards 1983;see Bryant et al 1990see Bryant et al , 1991b, for a more complete list).…”

Section: Main Characteristics Of the Texas-louisiana Slopementioning

confidence: 99%

Physiographic features on the northern Gulf of Mexico continental slope

Bouma

Bryant

1994

Geo-Marine Letters

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AbstraetThe continental slope of the northern Gulf of Mexico is diapirically controlled and is comprised of coalescing salt sheets, salt withdrawal basins, salt ridges, salt tongues and sills, and submarine canyons. Bathymetric information from single-beam data has resulted in several published maps. Many of the map areas have been remapped, using multibeam surveys, by the US National Ocean Service, and names have been given to the major physiographic features. The multibeam program was discontinued before complete coverage of the slope was accomplished. We provide charts of the remaining areas with

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“…Gealy (1955) interpreted the origin of the hummocky topography of the area as the result of gravity slumping. Later on, extensive seismic surveying and drilling revealed the role that salt plays in controlling the geomorphic and geological features of the area (Moore and Curray 1963, Lehner 1969, Garrison and Martin 1973, Buffier and others 1978, Humphries 1978, Watkins and others 1978, Martin 1980, Buffler 1983, Winker and Edwards 1983, Shaub 1984, Bouma and others 1986, Worrall and Snelson 1989.…”

Section: Physiographymentioning

confidence: 99%

Physiographic and bathymetric characteristics of the continental slope, northwest Gulf of Mexico

Bryant

Bryant²,

Feeley

et al. 1990

Geo-Marine Letters

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Bathymelric charts of the continental slope ol the northwestcrn Gulf of Mexico reveal the presencc of over 911 intraslopc basins with relief in excess of 150 m. The ew~lution and the general configuration of lhe basins are a function of halokinesis of allochlhonous salt. lntraslope-interlobal and intraslope-superlobal bitsins occupy the upper and lower continental slope, respectively. Other structures on the slope associated with salt tectonics are the Sigsbcc Escarpment, the seaward edge of the Sigsbec salt nappe, and the Ahnninos and Keathlcy canyons. Major erosional features are the Mississippi Canyon and portions of a submarine canyon on the southern extreme of the Sigsbee Escarpmcnt,

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Unstable Progradational Clastic Shelf Margins

Cited by 61 publications

References 0 publications

Land Subsidence Along the Texas Gulf Coast Due to Oil and Gas Withdrawal

Land Subsidence Along the Texas Gulf Coast Due to Oil and Gas Withdrawal

Physiographic features on the northern Gulf of Mexico continental slope

Physiographic and bathymetric characteristics of the continental slope, northwest Gulf of Mexico

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