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Pennsylvanian conglomerates in the Arbuckle Mountains, southern Oklahoma

R.N. Donovan
R.N. Donovan
Geology Department Texas Christian University, Fort Worth, Texas 76129
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W. D. Heinlen
W. D. Heinlen
2508 E. 88th St. South, #9, Tulsa, Oklahoma 74137
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January 01, 1988


Two formations illustrate the characteristics of Pennsylva-nian conglomerates in the Arbuckle Mountains of southern Oklahoma the Vanoss Formation and the Conings Ranch Conglomerate.

The Vanoss Formation is exposed on Bromide Hill in Platt National Park which is located on the southern edge of Sulphur and is easily reached by good roads from all directions (Fig. 1). To gain access to the area, follow U.S. 177 south from Sulphur into the park. Approximately 900 ft (300 m) inside the park boundary, immediately after crossing Rock Creek, turn west and follow the perimeter drive for about 1 mi (1.4 km) to Bromide Pavilion (Fig. 2).

The Conings Ranch Conglomerate is exposed on both sides of I-35 and in the median, approximately halfway between the Davis and Turner Falls turnoffs, and forms part of the magnificent Arbuckle Mountains road cuts (Fig. 1) (see also Fay, this volume). A rest area, which provides a lay person’s explanation of the geology, is conveniently located at the southern margin of the Conglomerate on the south lane of I-35. The principal outcrops are between Interstate Stations 2600 and 2630 as designated by the Oklahoma Department of Highways.

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Figures & Tables


DNAG, Centennial Field Guides

South-Central Section of the Geological Society of America

O. T. Hayward
O. T. Hayward
Geology Department, Baylor University, Waco, Texas 76798
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Geological Society of America
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Publication date:
January 01, 1988




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