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Page 5119, results 127951 - 127975

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Publication Extents

Not all publications have extents, not all extents are completely accurate
Grain-size analyses of Ordovician sandstones from the Midwestern states
Keith Brindley Ketner
1979, Open-File Report 79-230
Certain Ordovician sandstones of the Midwestern States were investigated for the purpose of determining the range in size of constituent sand grains. Although many size analyses of the same formations have been reported in the literature, the methods of sample collection, preparation, and sieving were not uniform, and the results...
Paleontologic and stratigraphic relations of phosphate beds in Upper Cretaceous rocks of the Cordillera Oriental, Colombia
Edwin K. Maughan, Francisco Zambrano O., Pedro Mojica G., Jacob Abozaglo M., Fernando Pachon P., Raul Duran R.
1979, Open-File Report 79-1525
Phosphorite crops out in the Cordillera Oriental of the Colombian Andes in rocks of Late Cretaceous age as strata composed mostly of pelletal carbonate fluorapatite. One stratum of Santonian age near the base of the Galembo Member of the La Luna Formation crops out at many places in the Departments...
U.S. Geological Survey activities in New York, 1979
Anne Finch, Paula Gori
1979, Open-File Report 80-51
This report describes the work of the U.S. Geological Survey and summarizes projects conducted in New York during 1979. Many of these projects are continuing into the 1980's. The major programs provide basic scientific information concerning water, land, and mineral resources. The Survey also supervises the exploration for mineral fuels...
Generalized thickness of the surficial deposits above the confining bed overlying the Floridan Aquifer, Southwest Florida Water Management District
R. M. Wolansky, R. M. Spechler, Anthony Buono
1979, Open-File Report 79-1071
This map report presents the thickness of the surficial deposits overlying the upper confining bed of the Floridan aquifer in the Southwest Florida Water Management District. The surficial deposits range in thickness from less than 25 feet in the western part of the district to greater than 250 feet in...