Professional Paper, Issue 125Department of the Interior, U. S. Geological Survey, 1920 - Geology |
From inside the book
Results 1-5 of 42
Page 5
... thin inter- mediate veins . Between each pair of veins there are six to eight fine veinlets , which are not visible ... thin principal vein , and 10 to 12 thin parallel veins on either side of the principal vein . ( See ' fig . 1. ) The ...
... thin inter- mediate veins . Between each pair of veins there are six to eight fine veinlets , which are not visible ... thin principal vein , and 10 to 12 thin parallel veins on either side of the principal vein . ( See ' fig . 1. ) The ...
Page 8
... thin reduced pairs , diverging at wide angles . The basal pair are nation , however , is unlike any- opposite and subbasal , diverging from the midrib at thing occurring in Quercus , in angles of about 20 ° , rather straight in their ...
... thin reduced pairs , diverging at wide angles . The basal pair are nation , however , is unlike any- opposite and subbasal , diverging from the midrib at thing occurring in Quercus , in angles of about 20 ° , rather straight in their ...
Page 9
... thin and diverge at angles of about 70 ° , running straight about halfway to the margin , where they turn abruptly upward to form wide arches to the adjacent superior secondaries . Tertiary venation largely immersed , consisting of ...
... thin and diverge at angles of about 70 ° , running straight about halfway to the margin , where they turn abruptly upward to form wide arches to the adjacent superior secondaries . Tertiary venation largely immersed , consisting of ...
Page 10
... thin beds of sandstone and sandy shale in upper part and thin beds of limestone and sandstone near the base ; shale is only slightly plastic when wet . Contains marine fossils . Lower Creta- ceous ( ? ) . Kootenai tion ( ? ) . forma ...
... thin beds of sandstone and sandy shale in upper part and thin beds of limestone and sandstone near the base ; shale is only slightly plastic when wet . Contains marine fossils . Lower Creta- ceous ( ? ) . Kootenai tion ( ? ) . forma ...
Page 14
... thin bands of sandstone and sandy shale in its upper part , and according to the record of the Vananda well has more or less sandstone and a thin bed of limestone at the base . The shale contains large calcareous concretions in which ...
... thin bands of sandstone and sandy shale in its upper part , and according to the record of the Vananda well has more or less sandstone and a thin bed of limestone at the base . The shale contains large calcareous concretions in which ...
Common terms and phrases
Alachua County AMERICAN SPECIES Astarte bank of Flint bank of Suwannee Bluff C. W. Cooke canellei central portion central region Chipola River coast Collected by E. M. collector convex Creek Cuba Cuba U. S. G. S. station Douvillé E. M. Kindle embryonic chambers Eocene equatorial band equatorial chambers feet Flint River formation fossils fragment genus height hexagonal horizontal section shows lateral chambers Lemoine Lepidocyclina Macoma margin Marianna limestone miles above Bainbridge miles north miles northwest millimeters Nome numerous Ocala limestone Oligocene Orbitoides Panama papillae papillate peripheral portion periphery pillars Plate Pliocene reticulate ribs sandstone Santiago Province sellaeform shale slightly smooth SPECIES OF LEPIDOCYCLINA supera Surface view Suwannee County Suwannee River T. W. Vaughan thick thickened thin type specimen U. S. G. S. station U. S. Geol U. S. Nat umbo vertical column vertical section shows view of type W. C. Mansfield walls Yateras River