Pennsylvanian foreland deformation of Wichita uplift, southwest Oklahoma

Conference · Thu May 01 00:00:00 EDT 1986 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:5063612

McConnell, D

Pennsylvanian foreland deformation associated with the Ouachita orogene reactivated a west-northwest-east-southeast Cambrian basement trend, the southern Oklahoma aulacogen, to form the Wichita uplift, southwest Oklahoma. The 30-km-wide subsurface Frontal fault zone separates the uplift from the Anadarko basin to the north. Horizontal shortening across this fault zone is estimated at 7-15 km (20-40%), vertical displacement totals 9-10 km from the uplift to the basin. Folds are mapped on an interformational scale within the Frontal fault zone, and on an intraformational scale (Cambro-Ordovician Arbuckle Group) in the Slick Hills, southwest Oklahoma. Additional shortening occurred along southwest dipping mountain flank thrusts and on bedding plane thrusts, respectively. Hanging wall blocks of major faults contain the shallow dipping limb and anticlinal hinge zone of the interformational scale folds. Oil and gas production is generally restricted to these anticlinal crests within Paleozoic rocks. Deep wells (> 6000 m) that have penetrated footwall imbricates of the mountain flank thrusts have drilled through steep-overturned beds and tight recumbent folds before passing through faults into a normal stratigraphic sequence. Basement thrust loading of the southern margin of the Anadarko basin controlled the trend (west-northwest-east-southeast) of the axis of maximum deposition within the basin during the Pennsylvanian.

• Research Organization: Texas A and M Univ., College Station
• OSTI ID: 5063612
• Report Number(s): CONF-860624-
• Journal Information: Am. Assoc. Pet. Geol., Bull.; (United States), Vol. 70:5; Conference: American Association of Petroleum Geologists annual meeting, Atlanta, GA, USA, 15 Jun 1986
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
OKLAHOMA
GEOLOGIC HISTORY
SEDIMENTARY BASINS
CAMBRIAN PERIOD
GEOLOGIC FAULTS
GEOLOGIC FORMATIONS
ORDOVICIAN PERIOD
PENNSYLVANIAN PERIOD
FEDERAL REGION VI
GEOLOGIC AGES
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
NORTH AMERICA
PALEOZOIC ERA
USA
020200* - Petroleum- Reserves
Geology
& Exploration