The Deese and Collings ranch conglomerates of the Arbuckle Mountains, Oklahoma: Evidence of strike-slip movement during the deformation stage of the southern Oklahoma Aulacogen

Conference · Mon Feb 01 04:00:00 EST 1993 · Geological Society of America, Abstracts with Programs; (United States)

OSTI ID:5977430

Cemen, I; Pybas, K; Stafford, C; Al-Shaieb, Z ^[1]

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1. Oklahoma State Univ., Stillwater, OK (United States). School of Geology

It has been widely recognized that the Pennsylvanian conglomerates of the Arbuckle Mountains, Oklahoma, record the deformation stage of the Southern Oklahoma Aulacogen. Two of these units are the Desmoinesian Deese Conglomerate, exposed in the Mill Creek Syncline area between the Reagan and Mill Creek fault zones, and the Middle Virgilian Collings Ranch Conglomerate, exposed along the Washita Valley fault zone in the Turner Falls area. The authors investigated clast size, geometry, and content, primary sedimentary structures, petrography, petrology, and diagenesis of the two conglomerate units, as well as the geometric relationship of their basins with nearby faults. Their evidence suggests that the two conglomerates were deposited as alluvial fans in basins formed by strike-slip movements. The Collings Ranch Conglomerate was deposited in a basin formed as the result of left-stepping along the nearby Washita Valley strike-slip fault zone. The Deese Conglomerate was deposited in a basin formed due to the combined effect of strike-slip and dip-slip movements along the Reagan and Mill Creek fault zones. In the Collings Ranch basin, the deposition was accomplished primarily by channel-fill and sieve deposits in the proximal region of the fan. The Deese Conglomerate was deposited as an alluvial fan or fans which included several channel deposits while, in the deeper parts of the basin, fine-grained materials and limestones were deposited. These observations and their possible interpretations suggest that the Washita Valley, Mill Creek, and Reagan fault zones have experienced substantial strike-slip movement during the deformation stage of the Southern Oklahoma Aulacogen.

• OSTI ID: 5977430
• Report Number(s): CONF-9303212--
• Conference Information: Journal Name: Geological Society of America, Abstracts with Programs; (United States) Journal Volume: 25:1
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
580000* -- Geosciences
CARBONIFEROUS PERIOD
CONGLOMERATES
DEPOSITION
DEVELOPED COUNTRIES
DIAGENESIS
GEOLOGIC AGES
GEOLOGIC FAULTS
GEOLOGIC FORMATIONS
GEOLOGIC FRACTURES
GEOLOGIC HISTORY
GEOLOGIC STRUCTURES
GEOLOGY
NORTH AMERICA
OKLAHOMA
PALEOZOIC ERA
PETROLOGY
ROCKS
SEDIMENTARY ROCKS
USA