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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 51 (1967)

Issue: 8. (August)

First Page: 1688

Last Page: 1688

Title: Dalhart Basin Challenges the Exploration Geologist: ABSTRACT

Author(s): George Dobervich, Ira D. Taylor

Article Type: Meeting abstract

Abstract:

The Dalhart basin is a small stratigraphic and structural basin underlying the greater part of Cimarron County in the Oklahoma Panhandle, and Dallam and Hartley Counties in the extreme western Texas Panhandle.

Genetically, the Dalhart basin is closely related to both the Palo Duro and Anadarko basins, because connecting seaways from these basins were open into the Dalhart basin through most of Pennsylvanian and Early Permian times.

The Dalhart basin is a region is fairly abrupt facies change, with interfingering of nearshore sandstone and granite "wash," shelf sediments, and basinal sandstone and shale. Under these conditions, reservoirs can be expected to be controlled as much by stratigraphic factors as by structural position.

Excellent reservoir beds occur throughout the basin at relatively shallow depths, with average pay zones ranging in depth from 4,500 to approximately 6,500 ft. The primary objectives in Cimarron and Dallam Counties appear to be sandstone, "wash," and conglomerate of Morrowan and Desmoinesian ages, whereas in Hartley County, the main exploratory effort should be centered on the Missourian and Virgilian sandstone and "wash." It is also very possible that Wolfcampian and (or) Virgilian reef or reef-like carbonate deposits may be found in hartley County.

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