Field Notebook: Texas 1957a
Page 22
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Transcription
(12) Wolfcamp Hills - east end. 6/26/57- Studied the "Dolomite" sequence at east end of the hills. The easternmost ridge is conglomeratic ls, the dolomite if present is limited to one or two narrow bands. The ls is a more or less typical biotermal deposit; very large amounts of crinoidal debris and fractured shells, a few echinoid spines. Foraminifera are few and are rather coarse even in what appears to be pockets. Collection 6/26/57-1 - is from a smooth weathering lsband about 8" thick within the upper 2' feet of the massive face forming ls. This is over lain by about 2' of unevenly bedded ls and dolomite. The dip of the massives and the unevenly bedded layers is S70E. Much of the slope to the SE of this narrow ridge appears to be rotated and sheared. The bedding planes are off set, Collection 6/26/57/2> 9' 4' 15' 7' 6/26/57/3 This collection (2) is from the 2nd ls highland from the eastern end of the Hills. The pocket from which these foraminifera came is rather thin but of considerable horizontal extent. The stratigraphic interval between 142 appears to be only about 12' above collection 6/26/57-1, but the relationships are obscured by discontinuous bedding and rubble of these 2 biotermal masses. 6/26/57/3 - From the highest portion of the 2nd biozone on the east end of the Wolfcamp Hills. This collection is about 13' to 15' feet stratigraphically higher than (2). 6/26/57-4 west side of 2nd biotermal rey. N 20' 10' S