Field Notebook: Texas 1959
Page 45
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Transcription
5) Calcarenite, gray, 1' grading up into quartz ss. ----- 12'. 6) Calcarenite, medium to dark gray, 1' beds, Collection 7-6A -- 1' up? A few pebbles - calcarenites have siliceous through the pores - gets brown weathering color. Upper part of a conglomerate - dolomite also in patches. (Cephalopods and bryozoans to the west).----- 18'. 7) Sandstone, red-brown weathering, and conglomerate, chert pebbles in a dolostone and siliceous matrix, 4 repetitions. -------30'. PG. 71 8) Limestone, brown weathering, shell hash, some beds conglomeratic, siliceous deposits in voids, 1' to 2' beds - -------40' (to top of knoll). To the west these beds change facies into orthoquartzites, siliceous shales, to a large extent. Above, beds which I think are the same as unit 8, there are: 9) Sandstone and shale, friable, yellow and red-brown weathering, some bands of dark brown siliceous shale ------ 30'. 10) Sandstone, light brown, orthoquartzite and thin beds of shales. (6° WNW dip).- -----15'. 11) Covered above, some beds are exposed but strikes are variable and apparently the sequence is broken by several faults. -------(King's est 525') mine —about 400'. PG. 72 12) Shale, yellow-brown weathering, impart siliceous. ----- 25' exposed. 13) Conglomerate, local lens. -----about 30'. 14) Ss., and shale, gray-yellow ----- 232'. 15) Limestone, yellow-gray weathering, finely laminated with some cherty bands, lenses of calcarenite - Collection 7-15A -- 5' up. Collection 7-15B --12' up. Collection 7-15C --17' up. ---------Total 17'. 16) Shale, yellow-brown, thinly laminated, lenses of calcarenite with fossil hash - -------14'. 17) Limestone, medium gray, 1' massive beds, fossil hash calcarenite. Collection 7-17A 1' up. - --------2'. 18) Shales and ss., red-brown to yellow, thinly laminated, siliceous, one 6" calculutite bed in middle. - -----10'. PG. 73 19) Limestone, medium gray, conglomeratic in lower part, calcarenite higher - Collection 7-19A - 6" up. Collection 7-19B - 1.5' up --------- 2'.