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The AAPG/Datapages Combined Publications Database

AAPG Bulletin

Abstract


Volume: 37 (1953)

Issue: 11. (November)

First Page: 2606

Last Page: 2606

Title: Paleozoic History of the Central Nebraska Basin and Its Relation to Anticipated Oil and Gas Exploration: ABSTRACT

Author(s): E. C. Reed

Article Type: Meeting abstract

Abstract:

The western part of the Central Nebraska basin, which appears to be a northward extension of the Salina basin of Kansas, has been the scene of active leasing and seismographic investigations during the past year, particularly in Harlan, Phelps, Kearney, Buffalo, Sherman, Valley, eastern Custer, and eastern Dawson counties and an active drilling campaign in this area is anticipated. Most of the interest seems to be localized within a broad band along the western side of the basin where the truncated edges of the pre-Pennsylvanian Paleozoic formations are overlapped by the Pennsylvanian and west thereof where there are stratigraphic trap possibilities in connection with Lower Pennsylvanian sands that may wedge out against the pre-Cambrian surface as it rises in the Cambridg arch.

The known distribution, stratigraphy, and lithology of the pre-Pennsylvanian formations within this basin are discussed and the probable Paleozoic history of the region reviewed. The Pennsylvanian lithology, distribution, and facies changes are outlined. It is concluded that suitable reservoir rocks occur at reasonable drilling depths in connection with formations of several geologic ages although oil source possibilities and local structural conditions are hard to evaluate. Important unconformities at the base of the Mesozoic, at the base of the Pennsylvanian, and at the base of the Simpson present some interesting possibilities but also suggest that the region should not be condemned on the basis of a comparatively few tests that may not be located to test more than one possibility dequately.

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Copyright 1997 American Association of Petroleum Geologists