Field Notebook: Texas 1924, 1925
Page 95
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Transcription
Austin, Texas; April 13 - 1926 Tuesday Had Philip B. King to lunch to talk on the Carboniferous of the Oceans Mountains. He deems it safer in the present to regard the Texas-Dimple series distinct from the Baptist, and the two series separated by an erosional un-conformity. In places he finds no Dimple but little Dimple beneath the Baptist which can then be explained as eroded out before Baptist time. Finally the lithology is different, the Texas being more sandy, more chloromeric and cherty, while the Baptist is a series of alternating shales and limestones with fossils usually in evidence while they are rare or absent in the Texas-Dimple series. He thinks of no angular unconformity between Dimple and the Baptist; myself arrived one. Both the Texas-Dimple and the Baptist older folded together, which means at the close of Cretaceous Time. He has at least three places in the Altuda Quadrangle to the W. and S.W. of Iron Mountains where the Texas-Dimple and Baptist series go as folds beneath the Permian series what in this case means Leonard formation.