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Title: Off-shelf portion of Harris delta: Reexamination of downdip Woodbine-Eagle Ford

Abstract

This study related the Eagle Ford equivalent Harris delta north of the Stuart City shelf edge with downdip Woodbine-Eagle Ford section south of that shelf edge. Together, they comprised one large deltaic complex that divided into two major lobes at an avulsion site near Anderson County, Texas. One lobe prograded southwestward toward Kurten field in Brazos County, the other (now partly eroded) prograded southeastward beside the low-lying Sabine (uplift) landmass into Polk County. The Polk County lobe crossed the Stuart City shelf edge in the Seven Oaks-Hortense field area, and continued to prograde southward into deeper and higher energy water. Such an environment caused this off-shelf Harris delta to oversteepen, resulting in frequent slumps and gravity flows that deposited debris-flow and turbidite sands along with predominantly fine-grained prodelta sediments. More familiar deltaic facies (outer fringe) are present in the uppermost section. Numerous structural and stratigraphic maps and cross sections illustrate the progradation of the downdip Harris delta and its features. The progradation was arrested for a time by deeper water at the older and more precipitous Sligo shelf edge. This progradational hiatus is recorded by a relatively strong reflection that separates two seismic sequences. The younger onlapping sequence appears tomore » represent continued Harris delta sedimentation. among the interesting features mapped seismically and/or geologically are: mounded reflections that represent the largest slumping events, thickness anomalies associated with the carbonate substrate, and erosional( ) channels at the section top. These off-shelf Harris delta deposits appear to interfinger laterally with a genetically different eastern (Tuscaloosa ) sequence in Tyler and Jasper Counties.« less

Authors:
 [1]; ;  [2]
  1. Chambers Exploration, Inc., Houston, TX (USA)
  2. Univ. of Houston, TX (USA)
Publication Date:
OSTI Identifier:
5113252
Report Number(s):
CONF-8910221-
Journal ID: ISSN 0149-1423; CODEN: AABUD
Resource Type:
Conference
Journal Name:
AAPG Bulletin (American Association of Petroleum Geologists); (USA)
Additional Journal Information:
Journal Volume: 73:9; Conference: Gulf Coast Association of Geological Societies and Gulf Coast Section of SEPM meeting, Corpus Christi, TX (USA), 25-27 Oct 1989; Journal ID: ISSN 0149-1423
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; 58 GEOSCIENCES; TEXAS; STRATIGRAPHY; ALLUVIAL DEPOSITS; CARBONATE ROCKS; DEPOSITION; GEOLOGIC STRUCTURES; MAPS; SEISMIC SURVEYS; FEDERAL REGION VI; GEOLOGIC DEPOSITS; GEOLOGY; GEOPHYSICAL SURVEYS; NORTH AMERICA; ROCKS; SEDIMENTARY ROCKS; SURVEYS; USA; 020200* - Petroleum- Reserves, Geology, & Exploration; 580000 - Geosciences

Citation Formats

Porter, M H, Van Siclen, D C, and Sheriff, R E. Off-shelf portion of Harris delta: Reexamination of downdip Woodbine-Eagle Ford. United States: N. p., 1989. Web.
Porter, M H, Van Siclen, D C, & Sheriff, R E. Off-shelf portion of Harris delta: Reexamination of downdip Woodbine-Eagle Ford. United States.
Porter, M H, Van Siclen, D C, and Sheriff, R E. 1989. "Off-shelf portion of Harris delta: Reexamination of downdip Woodbine-Eagle Ford". United States.
@article{osti_5113252,
title = {Off-shelf portion of Harris delta: Reexamination of downdip Woodbine-Eagle Ford},
author = {Porter, M H and Van Siclen, D C and Sheriff, R E},
abstractNote = {This study related the Eagle Ford equivalent Harris delta north of the Stuart City shelf edge with downdip Woodbine-Eagle Ford section south of that shelf edge. Together, they comprised one large deltaic complex that divided into two major lobes at an avulsion site near Anderson County, Texas. One lobe prograded southwestward toward Kurten field in Brazos County, the other (now partly eroded) prograded southeastward beside the low-lying Sabine (uplift) landmass into Polk County. The Polk County lobe crossed the Stuart City shelf edge in the Seven Oaks-Hortense field area, and continued to prograde southward into deeper and higher energy water. Such an environment caused this off-shelf Harris delta to oversteepen, resulting in frequent slumps and gravity flows that deposited debris-flow and turbidite sands along with predominantly fine-grained prodelta sediments. More familiar deltaic facies (outer fringe) are present in the uppermost section. Numerous structural and stratigraphic maps and cross sections illustrate the progradation of the downdip Harris delta and its features. The progradation was arrested for a time by deeper water at the older and more precipitous Sligo shelf edge. This progradational hiatus is recorded by a relatively strong reflection that separates two seismic sequences. The younger onlapping sequence appears to represent continued Harris delta sedimentation. among the interesting features mapped seismically and/or geologically are: mounded reflections that represent the largest slumping events, thickness anomalies associated with the carbonate substrate, and erosional( ) channels at the section top. These off-shelf Harris delta deposits appear to interfinger laterally with a genetically different eastern (Tuscaloosa ) sequence in Tyler and Jasper Counties.},
doi = {},
url = {https://www.osti.gov/biblio/5113252}, journal = {AAPG Bulletin (American Association of Petroleum Geologists); (USA)},
issn = {0149-1423},
number = ,
volume = 73:9,
place = {United States},
year = {Fri Sep 01 00:00:00 EDT 1989},
month = {Fri Sep 01 00:00:00 EDT 1989}
}

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