Field Notebook: Texas 1957b
Page 287
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Transcription
160 wolfcamp dip NW 7° yellow-orange ironstained 4) shale, light brown, vitreous, and calcareous, 6" with numerous juruline (Coll. 9/3/58/1 near base;) — 16' 5) Covered, probably like 4 — 35' (a few scattered float samples suggest same jurulined types) 6) Conglomerate, many chert & co. pebbles < 3" diam, brown sandstone matrix with jurulinoids (S.I. means) — 8' 7) Covered, probably shale, & as interbedded 100' ± coll 9/3/58/2 = float 8) Ls., in large part organic peay, maybe [25] 9) part has cobbles in it. — ~~10~~ 10) Covered, Ls+shale probably 40' [10] Dolostone, brown weathered — 40 — overlain by Leonard Shales. page 148. This interval 6-9 apparently thins to the E along the face of Leonard Mt. The massive conglomerate there is represented in section 44 by 8' (bed 6) but the shales are largely a lateral equivalent of that congo. Shells in the eastern point of Leonard Mt. just above the congo are both in large part cross-lidded and then thinned W to sect 44, thus beds 7+8 are its lateral equivalent. The massive dolostone thins toward sect 44 by layers of cherty lidded Ls on its upper surface. Just west of sect 44, the dolostone is nearly completely missing. The northern slope, the hill west of Iron Mt., like most of the rest of the hill is covered by talus blocks. The first beds exposed below the LS sequence are folded Gay tanks containing very small triticles. There is apparently a trough or syncline of Niobraran age rocks in the triangle between SE Leonard Mt, nw Iron Mt., and again due west of the southern tip of Smeall.