Skip to Main Content
GEOREF RECORD

Structure, stratigraphy, and hydrocarbon system of a Pennsylvanian pull-apart basin in north-central Texas

Brian S. Brister, William C. Stephens and Gregg A. Norman
Structure, stratigraphy, and hydrocarbon system of a Pennsylvanian pull-apart basin in north-central Texas
AAPG Bulletin (January 2002) 86 (1): 1-20

Abstract

In 1989, a deep test in Cottle County, Texas, discovered an anomalously thick, gas-charged Pennsylvanian (lower Bend Group) clastic section along the Matador arch. Subsequent exploration and development provided data that support the concept that the natural gas fields in Cottle and King counties, north-central Texas, mark the extent of a hydrocarbon system related to the Broken Bone graben, an elongate 180 km 2 pull-apart basin in southeastern Cottle County. The graben results from left-step overstepping of left-lateral fault zones and is a component of the Red River-Matador structural trend of the greater Ancestral Rocky Mountains. Arkosic detritus originating from the Amarillo-Wichita uplift was transported southward, over the region containing the graben, toward the Knox-Baylor trough. Episodic graben subsidence accommodated a part of this sediment load as syntectonic, cyclically stacked Bend Group (Atokan, lower Pennsylvanian) fluvial-deltaic to marine deposits. Organic facies within the graben fill are predominantly terrestrially derived (gas prone) and present in sufficient quantity for significant hydrocarbon generation. Lopatin method basin modeling, vitrinite reflectance (R (sub o) ) measurements, and R (sub o) -calibrated pyrolysis-derived maturity measures demonstrate that the Bend Group organic facies in the graben have approached peak gas-generating maturation levels. Generated gas migrated within and outside of the basin following nonsealing faults and channelized fluvial pathways into several reservoir rock types in combination structural and stratigraphic traps.


ISSN: 0149-1423
EISSN: 1558-9153
Coden: AABUD2
Serial Title: AAPG Bulletin
Serial Volume: 86
Serial Issue: 1
Title: Structure, stratigraphy, and hydrocarbon system of a Pennsylvanian pull-apart basin in north-central Texas
Affiliation: New Mexico Institute of Mining and Technology, New Mexico Bureau of Geology and Mineral Resources, Socorro, NM, United States
Pages: 1-20
Published: 200201
Text Language: English
Publisher: American Association of Petroleum Geologists, Tulsa, OK, United States
References: 49
Accession Number: 2002-023442
Categories: Economic geology, geology of energy sources
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. block diag., sects., strat. col., 4 tables, sketch maps
N33°25'00" - N33°51'00", W100°30'00" - W99°58'00"
N33°49'60" - N34°15'00", W100°30'00" - W100°04'60"
N33°45'00" - N34°10'00", W100°04'60" - W99°34'60"
Secondary Affiliation: Gunn Oil Company, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by American Association of Petroleum Geologists, Tulsa, OK, United States
Update Code: 200209
Close Modal

or Create an Account

Close Modal
Close Modal