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Deltaic facies of the Hartshorne Sandstone in the Arkoma Basin, Arkansas-Oklahoma border

David W. Houseknecht
David W. Houseknecht
Department of Geology, University of Missouri, Columbia, Missouri 65211
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January 01, 1988


Sedimentary facies deposited in channel and interchannel positions within an actively prograding, river-dominated delta are illustrated at two localities near the Arkansas-Oklahoma border south of Fort Smith, Arkansas.

Locality 1 (94°17—20"W.; 35°11'41—N.; Greenwood, Arkansas, Quadrangle) is a distinctive, terraced roadcut on U.S. 71, approximately 12 mi (20 km) south of Fort Smith (Fig. 1). The Hartshorne Sandstone dips steeply north (nearly vertical) along the north limb of the Washburn anticline (Fig. 2).

Locality 2 (94°31—20W.; 35°10—30"N.; Spiro, Oklahoma, Quadrangle) is a roadcut on old Oklahoma 112, approximately 8 mi (12 km) west of Hackett, Arkansas (Fig. 1). The Hartshorne Sandstone dips 15° southward along the southern limb of the Backbone anticline (Fig. 2).

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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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