Field Notebook: Texas 1957b
Page 291
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Transcription
164 14, mark, light green gray, little cross bedding a few scattered fusulinids, sandy 4' 13 Shale, reddish brown, very silty, and thin algae. (8"'s) 28' 12 ls. mid gray, med grained calcareous of fossil frags., bedding indistinct, many uneven solution pseudo bedding however, weathers to a sharp pitted surface near top, lower bed. 90% or more crinoid frags. 22' 11 ls., much like that above except an beds 4"-8", this apparent permits carer erosion and a break in slope at this interval 8' 10 ls., light gray, massive beds 2'-6', a calcudite matrix with large intact crinoid stem pieces. 21' 9 Covered, probably a muddy zone of ls 26' 8 ls., light gray, calcaduite with some small fossil frags. 5' 7 Covered - stream gully, probably amarly interval 12' - ls. - old 6 of sect 14 These upper ls occupy a syncline in the lower end of the "Horse" range. Evidences to the east and the total effect suggests an over lap of these ls bids towards the west and apparently also towards the east (the erosion by pre Horse regions however more severe eastward). The "Horse" range probably still thins over these beds because of a former topographic high. The Leonard forms a continuous sequence of massive calcadites in its upper portion on the Brooks Ranch. At all places I took dip and strike along O Brooks Northern cross camp, the strike was within 5° of being East west. The dips become gentler to the north, high point-5 northward and suggest a slight anticlinal flexure toward the east. (Check to see if Morris dips on any strata)