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Flank Production of the Nemaha Mountains (Granite Ridge), Kansas1

C. R. Thomas
C. R. Thomas
El Dorado, Kansas
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January 01, 1929


In this paper surface and subsurface maps of an area comprising six townships and four producing fields are shown. From these and other data it is concluded that these producing folds are anticlinal buried hills and are contemporaneous with the Nemaha Mountains. Surface geology was largely responsible for the development of this area. The subsurface folds directly underlie the surface folds with remarkable consistency.

The conclusion is drawn that the surface folds are due to differential settling and depositional dip of the upper horizons over the Ordovician buried hills. The principal producing horizon is the unconformable contact between the Ordovician and later sedi-ments. Furthermore, it is concluded that the oil has migrated laterally for some distance from its source in the lower Pennsylvanian and Chattanooga shales to its present position.

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AAPG Special Publication

Structure of Typical American Oil Fields, Volume I

Sidney Powers
Sidney Powers
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American Association of Petroleum Geologists
ISBN electronic:
Publication date:
January 01, 1929




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