Field Notebook: Texas 1957a
Page 52
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Transcription
42 7/3/57/15 7/3/57/14 7/3/57/13 10) Covered 2' 11) LS, same as (9), 12) a) shale? 6" to 1' b) rubbly, craggy(½" to 1" pebbles) organic frag. LS. 2' (silicified fossils common) c) LS, coarse size organic frag. even top eroding surface 2'. The beds above (12) form irregular steps on the dip slope to the NNW. Biohermal deposits cause the irregularity in the 6" to 2' ft. beds - 15' to 20' of strata on the dip slope of this ridge which sits above bed(12), and is not covered by alluvium. 43 Fault strikes N15W - 25' strat displacement and apparently downd. This fault is 100yd's east of section 5. This afternoon I tried to trace bed 11, section III around to section I. Bed 11 as eroded away about in line with place where the lower part of section gets mixed up at the first turn on Geol Canyon. The upper anywhere of bed 11 is nearly completely covered out from lines - The next lower is cochino in sect. II, bed 9, I don't believe has this great population found. After losing bed 11, I drop down to what I believe is bed 9, at least the stratigraphic interval is about right - then to bed 8? - back to 9? then a biohermal LS, then a craggy/LS, finally to a LS with a reasonable number of fossils..."? about 300 yds from where I first lost 11. Of this bed is "11" of section IV then it is about 15' to 20'-higher with 2 additional LS inbetween, perhaps several more (ie, a chert separating 2 iron nuggy zones, capped by a LS.) 13) Covered 4' 14) LS, brown/yellow weathering, silicified fuselines + gastropods, some calinoid? spines