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Page 7315, results 182851 - 182875

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Not all publications have extents, not all extents are completely accurate
Relation of the Wissahickon mica gneiss to the Shenandoah limestone and Octoraro schist of the Doe Run and Avondale region, Chester County, Pennsylvania
Eleanora F. Bliss, Anna I. Jonas
1917, Professional Paper 98-B
The region discussed in this paper lies in Chester County, Pa., and is included in the eastern half of the Coatesville quadrangle. (See fig. 3.) It is within the belt of crystal-line schists and gneisses of the Piedmont Plateau. The northern half of the area, which will be called the...
The physical conditions indicated by the flora of the Calvert formation
Edward Wilber Berry
1917, Professional Paper 98-F
The object of the present paper is to give a summary of the small flora preserved in the Miocene diatomaceous beds of the Calvert formation in the District of Columbia and Virginia, and more especially to discuss its bearing on the physical conditions of the Calvert epoch. Subsequent to the...
The Helderberg limestone of central Pennsylvania
John B. Reeside Jr.
1917, Professional Paper 108-K
This paper presents the results of a study made during 1913, 1914, and 1915, while the writer was a student at Johns Hopkins University. The formations discussed have been studies in Maryland, New Jersey, and New York, and described with more or less detail, but concerning their occurrence in the...
The physical conditions and age indicated by the flora of the Alum Bluff formation
Edward Wilber Berry
1917, Professional Paper 98-E
The present paper has for its purpose the description of a small flora collected from the Alum Bluff formation, representing a horizon hitherto unrepresented paleobotanically in southeastern North America, and the discussion of the bearing of this flora on the physical conditions of deposition and the probable age of the...
Mechanics of the Panama Canal slides
George F. Becker
1917, Professional Paper 98-N
Dr. Becker visited the Canal Zone in 1913 as a geologist of the United States Geological Survey and since that time has given the problem the benefit of his study. His appointment as a member of the committee of the National Academy of Sciences has made it appropriate for his...