The Texan Permian and Its Mesozoic Types of FossilsU.S. Government Printing Office, 1891 - 51 páginas |
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The Texan Permian and Its Mesozoic Types of Fossils Charles Abiathar White Visualização integral - 1891 |
The Texan Permian and Its Mesozoic Types of Fossils Charles Abiathar White Visualização integral - 1891 |
Palavras e frases frequentes
acid America Appalachian Archean arenaceous argillaceous argillites base beds black shale calcareous Calciferous Cambrian fauna Cambrian rocks Canada Catskill character Chemung Cinder Cone classification Coal Measures conglomerate containing correlation County deposits described Devonian Dikelocephalus district division eastern Emmons equivalent fauna feet formation forms fossiliferous fossils Geological Survey geologists gray Hist horizon Jour Lake Superior lava layers Lingula Lingulella lithologic Lower Cambrian Lower Carboniferous Lower Silurian Meek Millstone grit mineral Mississippi Missouri Mountain Newfoundland North occur Ohio Old Red Old Red sandstone Olenellus paleontologic Paleozoic Paradoxides Pennsylvania Permian portion Potsdam sandstone Primordial Proc Prof Province quartz quartzite Quebec Red sandrock Red sandstone referred River sand sediments siliceous Silurian slates species stone strata stratigraphic Surv Taconic Tennessee thickness tion trilobites U. S. Geol unconformably Upper Cambrian uraninite Valley Vermont Waverly western Wisconsin York zone
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Página 11 - NICHOLSON. A Manual of Zoology, for the use of Students. With a General Introduction on the Principles of Zoology. By HENRY ALLEYNE NICHOLSON, MD, D.Sc., FLS, FGS, Regius Professor of Natural History in the University of Aberdeen.
Página 268 - Report of the progress of the Geological Survey of the State of Virginia for the year 1840.
Página 63 - NOTE. — In addition to the evidence heretofore possessed regarding the position of the shales containing the Trilobites, I have the testimony of Sir WE Logan, that the shales of this locality are in the upper part of the Hudson River group, or forming a part of a series of strata which he is inclined to rank as a distinct group, above the Hudson River proper. It would be quite superfluous for me to add one word in support of the opinion of the...
Página 179 - Descriptions of new organic remains collected in Nebraska Territory in the year 1857, by Dr. FV Hayden, geologist to the exploring expedition under the command of Lieut. GK Warren, Top. Engr. US Army, together with some remarks on the geology of the Black Hills and portions of the surrounding country.
Página 98 - A reprint of the annual reports and other papers on the geology of the Virginias.
Página 97 - These markings are of a flattened, cylindrical form, from ith to -,'jth of an inch broad, giving the surface of the fractured rock a ribbed appearance, and resembling perforations made in sand which have been subsequently filled up, without destroying the distinctness of the original impression.
Página 364 - He here advanced the idea that the enumeration of the mineral constituents of rocks could never be satisfactorily applied for the determination of the relative position of strata, but that recourse must be had to the organic remains. " We find the same organized remains associated with equivalent strata in every part of the earth...
Página 100 - On the map accompanying the paper (p. 170), an ideal section shows the shales and conglomerates resting on the gneiss beneath the sandstone, which they have referred to the Potsdam owing to its carrying Scolithus borings, and above the latter is the slate belt, in which the quarries are located. Under the title of " Geology of the Blue Ridge near Balcony Falls, Virginia ; a modified view,
Página 169 - ... siliceous sandstone. In many places, this most ancient of the fossiliferous rocks of New York (the Potsdam sandstone) is divided into laminae by the remains of innumerable shells of the genus Lingula. They are in such profusion as to form black seams like mica, for which they were at first mistaken.* With the Lingula occurs another small placunoid shell, allied to, if not identical, according to Professor E.
Página 274 - Explorations under the War Department. Explanations of a Second Edition of a Geological Map of Nebraska and Kansas, based upon Information obtained in an Expedition to the Black Hills, under the Command of Lieut. GK Warren.