Figure 10
View to the northeast of the upper Brokenleg Creek basin in Sections 4/5-12N-24W and Sections 33/34-13N-24W, on the west side of the Thurmond Ranch archaeological survey area in southern Roger Mills County, Oklahoma. The canyon has eroded down into redbeds of the Permian Elk City Sandstone and Doxey Shale formations. The white (gleyed) sediments at upper left mark the position of the Brokenleg Creek valley floor during the Late Pleistocene. See Figure 11 for a cross-section of these sediments.