ABSTRACT

Permian channel sandstones on the Muenster-Waurika arch and in the Red River area are lenticular, moderately multistoried, and moderately multilateral. Structure is considered to be the primary factor in concentrating uranium in non-arkosic sandstones. The uranium source is thought to be the underlying Pennsylvanian (or Permian) arkosic sandstones. Uranium in vertical movement in response to climatic changes of water below permeability barriers.

In the area south of the Post Oak Conglomerate, deposition environments ranged from either tidal-flat or lake mudflat to alluvial plain. Post Oak environments were alluvial piedmont and alluvial plain.

The Wichita uplift to the north and the Ouachita uplift to the southeast were the primary sources of clastic materials within the study area. The Wichita-derived clastics are recognized by their high feldspar content and general textural immaturity. Clastics derived from the sedimentary terrane of the Ouchita system were transported farther and are mature mineralogically and texturally. During deposition of the Permian channel sandstones, the study area was covered by two converging alluvial plains, a narrow plain next to the Wichitas and a wide southern plain west and northwest of the Ouachita system.