Field Notebook: Texas 1957a
Page 182
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Transcription
9) Covered, 5', probably a weak limestone. 10) Limestone brown weathering, slightly sandy 7', Collection 6/27/57/5. 11) Limestone gray to brown weathering 5-60'. (note: illustration: bed 1: 6/27/57/4 bed 2: 5'; 6/27/57/5 bed 3: 6/26/57/5 total height 60') The upper surface of #11 unit has a 1/2" limonite stain on a relatively recent exposed surface. {note: illustration: Reef 1: Reef 2 what I believe is probably equivalent to P. King Bed 2.} PG. 18 The formation of Reef 1 precedes that of Reef 2 and the debris from Reef 1 sloped toward the southeast. The relations are not completely clear but the debris from Reef 2 appear to rest on the truncated edges of Reef 1 debris, suggesting that Reef 1 had a greater extent to the northeast but was removed before Reef 2 came into existence. Top of Uddenites 12) Covered 27' probably soft limestone 13) Limestone gray weathering, a biohermal hash. #2 limestone? 17', in 4-5' massive beds 14) Limestone nodular, dark gray, weathers to white. 5-25'. 15) Calcarenite, yellow weathering- Caps 14 but intertongues with it {note: illustration: bed 1: 13 bed 2: 14 bed 3: 15; 7' SE} 16) Limestone yellow-buff weathering - 20 feet, collection 6/26/57/4 is from this interval-- Top of Ridge - PG. 19 Section 24 Section II about 200 yards southwest of section I. 1) Shale, dark brown, bottom of interval not seen, top not seen, estimate 100- 125' thick. Collection 6/27/57/6. [Gaptank shale is considerably thicker here than at type section?] 2) Limestone, dark gray, limestone rubble at base 8', massive limestone ledge 3' (Collection - 6/27/57/7) at 33' above base of 1st ledge - Collection 6/27/57/8 (24- 2B), this unit became progressively more shaly in the upper part. Total thickness of this unit is 74'. 3) Limestone, gray; brownish-yellow weathering-indistinct nodular bedding in lower 8' of this unit. Collection 6/27/57/9 at base- 33' massive limestone with one