Field Notebook: Texas 1957a
Page 142
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Transcription
132 14) Conglo, about 6" grading up into a rubblly algal, sponge, a few peawlines which may have been transported around stones 6' 15) Sandstone light brown. 1/16 to 1/8" beds - 9' 16) LS, Calcareous with organ frag gronval size. 1' 17) Sandstone brown - 6" note: here the calcareous is angular at its base and roots on eroded weathered brown sandstone - (apparently the major break in sedimentation?) 18) Like #16 2' 19) LS, biobernal, gray weathering with brown conglo chert pebbles. 7/22/57/7 6' becomes a calcareous at the hp (2') and a flat top surface w/silicious iron (brown) weathering. 133 20) Sandstone, brown, like #15 - 4 1/2' 21) LS, rubble, with chert conglomerate, ex. conglo cobbles: grades into a calcareous (cupper 6" to 1") with a flat, silicious iron stained upper surface. Coll. 7/22/57/9 7 1/2' 22) Sandstone, brown weathering, much and calcite with the fine quality sand. 2' 23) LS, massive, brownish gray weathering chert pebbles, and ls boulders scattered in fluv. - 15' 24) LS, mostly calcareous - 4 cycles of rubble, through calcareous to flat top with silicious iron stained; 21'; (at top 7/22/57/9) top of ridge 50' NE of measured section a chert & quartz conglo has cut a 8' channel in unit #23. This conglo appears very much like unit 8 (in the lower part).