Field Notebook: Texas 1957a
Page 174
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Transcription
6-23-57-3; cobbles of limestone and organic fragment debris - Bryozoans, Dictyoclostous [brachipods], Crinoid plates. South side = 80'; Massive reef head in P.K. bed 2.} PG. 6 Uddenites zone- Brown weathering material in limestone- what is it? Section along face of Mid Hills {note: illustration: Uddenites member: Upper Gaptank limestone of King. #2 limestone in between west and east section.} Note the great changes in thickness of the Uddenites shale- The contorted bedding of the upper Gaptank limestone, the biohermal nodes and variation in thickness of other beds- Trace these out and try to find out if the Uddenites member is along a facies, a time units, which may have been deposited as the Gaptank was being deformed, time of deformation- what is structure of this? joints? what about joints? about the draped limestone over the higher biohermal developments? PG. 7 6-24-57 Sect. 8 (part) 1st limestone ledge about 20' above top of Wolfcamp Conglo. in Section Carcajew nest in Lenox Hill- ref. C.O.D. 6527/34 collection 6-24-57-1 is in same horizon as his- see also 8-12. 6-24-57-2- From same section as -1; This is from a large block of limestone. 3'x2' in the Hess ledge- The ledge itself is a Sacchinella- Leptodus reef with medium boulders of various rock types in it. This block from which this sample is taken is apparently on edge in the rubble of this reef. {note: illustration: bed 1: 6-24-57-3 (8-24); crumbly limestone (with some clay) with pebbles. bed 2: 5'; dense well bedded limestone. bed 3: 5'; gray. bed 4: 8'; vuggular limestone (Carcajew nests). bed 5: 15'; massive reef breccia. bed 6: 5'; bedded limestone.} The exact base of the Hess is questionable here- any of these lower 3 contacts would be acceptable. PG. 8 {note: illustration: layer 1: 6/24/57-3 (8-24); (1) a gray limestone with fine to medium pebbles and abundant crinoid stems and shell fragments. bed 2: bed 3: dark gray, thin bed shale, 1' shale, is like (1) bed 4: 8' thick (like (1)) bed 5: dark gray, thin bed shale 0'-3'. bed 6: 6/24/57-4 (8-24); limestone lense.}