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Distribution of molybdenum in heavy-mineral concentrates, Richfield 1 degree by 2 degrees Quadrangle, Utah Distribution of molybdenum in heavy-mineral concentrates, Richfield 1 degree by 2 degrees Quadrangle, Utah
The purpose of these maps is to provide the regional geochemical framework for the U.S. Geological Survey's Conterminous United States Mineral Assessment Program (CUSMAP) for the Richfield 1° x 2° quadrangle. The regional sampling is designed to provide definition of broad geochemical patterns and trends which can be utilized along with geologic and geophysical data for the assessment of...
Distribution of salt structures in the Gulf of Mexico map and descriptive text Distribution of salt structures in the Gulf of Mexico map and descriptive text
Slender diapiric stocks, broad massifs, anticlinal masses, low-relief swells, and pillowy lobes of Middle to Upper Jurassic salt (Viniegra, 1971; Kirkland and Gerhard, 1971; Imlay, 1980) dominate the structural fabric of large parts of the continental margins and deep basin of the Gulf of Mexico (sht. 1, A). These structures, known collectively as "salt domes," are almost exclusively...
Florida-Hatteras shelf and slope, and inner Blake Plateau Florida-Hatteras shelf and slope, and inner Blake Plateau
During 1976 more than 5000 kilometers (km) of seismic-reflection profiles were obtained on the Florida-Hatteras shelf and slope, and the inner Blake Plateau. From these data reflecting units were traced regionally (Paull and Dillon, 1979; Edsal, 1979), and the structure and stratigraphy of the shelf were determined This geologic subcrop map is based largely on the interpretation of Paull...