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Title: Structural styles of growth faults in US Gulf Coast basin

Abstract

Structure and sediments related to shelf-margin growth faults are an important exploration objective in the Cenozoic in the US Gulf Coast basin. The syndepositional nature of these fault systems has been recognized for decades with well control and seismic. Recent seismic of higher quality and deeper penetration has begun to reveal more clearly the variety of structural styles of the typical Gulf Coast shelf-margin growth fault. Generally five different shelf-margin growth fault types are recognized: (1) listric faults which detach above undeformed older section, (2) listric faults which detach on mobile, overpressured shales above older undeformed sediments, (3) faults which sole into autochthonous salt withdrawal basins, (4) faults which detach along allochthonous salt sill intrusions, and (5) nondetached faults caused by differential compaction of thick shale intervals or basement faulting. The first four are the dominant structural types, and their different structural styles reflect various modes of accommodation of fault offset within the sedimentary section. The fifth structural type, although not as commonly recognized, may be obscured by other structural complexities. These five fault types have different structural and stratigraphic characteristics that create different trap-source reservoir-relationships for each type. By understanding and identifying the distribution of these structural types, onemore » may better understand the complex production trends established in the Gulf Coast basin and more accurately assess potential production on prospective traps.« less

Authors:
Publication Date:
Research Org.:
Amoco Production Co., New Orleans, LA (USA)
OSTI Identifier:
5880087
Report Number(s):
CONF-890404-
Journal ID: CODEN: AABUD
Resource Type:
Conference
Journal Name:
AAPG Bull.; (United States)
Additional Journal Information:
Journal Volume: 73:3; Conference: AAPG annual convention with DPA/EMD Divisions and SEPM, San Antonio, TX, USA, 23-26 Apr 1989
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; GULF COAST; GEOLOGIC FAULTS; PETROLEUM DEPOSITS; EXPLORATION; GEOLOGIC TRAPS; SEDIMENTARY BASINS; GEOLOGIC DEPOSITS; GEOLOGIC FRACTURES; GEOLOGIC STRUCTURES; MINERAL RESOURCES; NORTH AMERICA; RESOURCES; USA; 020200* - Petroleum- Reserves, Geology, & Exploration

Citation Formats

Lopez, J A. Structural styles of growth faults in US Gulf Coast basin. United States: N. p., 1989. Web.
Lopez, J A. Structural styles of growth faults in US Gulf Coast basin. United States.
Lopez, J A. 1989. "Structural styles of growth faults in US Gulf Coast basin". United States.
@article{osti_5880087,
title = {Structural styles of growth faults in US Gulf Coast basin},
author = {Lopez, J A},
abstractNote = {Structure and sediments related to shelf-margin growth faults are an important exploration objective in the Cenozoic in the US Gulf Coast basin. The syndepositional nature of these fault systems has been recognized for decades with well control and seismic. Recent seismic of higher quality and deeper penetration has begun to reveal more clearly the variety of structural styles of the typical Gulf Coast shelf-margin growth fault. Generally five different shelf-margin growth fault types are recognized: (1) listric faults which detach above undeformed older section, (2) listric faults which detach on mobile, overpressured shales above older undeformed sediments, (3) faults which sole into autochthonous salt withdrawal basins, (4) faults which detach along allochthonous salt sill intrusions, and (5) nondetached faults caused by differential compaction of thick shale intervals or basement faulting. The first four are the dominant structural types, and their different structural styles reflect various modes of accommodation of fault offset within the sedimentary section. The fifth structural type, although not as commonly recognized, may be obscured by other structural complexities. These five fault types have different structural and stratigraphic characteristics that create different trap-source reservoir-relationships for each type. By understanding and identifying the distribution of these structural types, one may better understand the complex production trends established in the Gulf Coast basin and more accurately assess potential production on prospective traps.},
doi = {},
url = {https://www.osti.gov/biblio/5880087}, journal = {AAPG Bull.; (United States)},
number = ,
volume = 73:3,
place = {United States},
year = {1989},
month = {3}
}

Conference:
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