Report discussing a study of the formations on the borders of the land-pebble phosphate district to place previously done stratigraphic and economic studies of the district into a larger geologic setting
Report discussing a petrographic study of the uranium ore-producing formations of the Colorado Plate...
From abstract: The two topmost zones of the Bone Valley formation at the Homeland mine are a phospha...
Report discussing investigation of the relation of uranium and phosphate in the Phosphoria formation...
Report discussing the results of geologic drilling of the land-pebble phosphate district in Florida....
Report describing the geology of the land-pebble phosphate district on the Gulf Coastal Plain of Flo...
Report discussing the U.S. Geological Survey's investigation of the stratigraphy of the Phosphoria f...
Report discussing the distribution, composition, and origin of the phosphate deposits in the land-pe...
Report discussing the U.S. Geological Survey's investigation of the stratigraphy of the Phosphoria f...
Report discussing the U.S. Geological Survey's investigation of stratigraphy of parts of the Phospho...
Report discussing an investigation of the Centennial Range of Montana and Idaho, and the phosphate d...
From introduction: The principal objective of the program is to make detailed geologic maps of the a...
Report presenting data from part of a study aimed at analyzing and mapping out stratigraphic section...
The following report presents the results of part of a geologic study of the phosphate deposits in c...
From abstract: The land-pebble phosphate district of Florida is a part of the Gulf Coastal Plain. Th...
Semiannual report describing the U.S. Geological Survey's progress in searching for radioactive depo...
Report discussing a petrographic study of the uranium ore-producing formations of the Colorado Plate...
From abstract: The two topmost zones of the Bone Valley formation at the Homeland mine are a phospha...
Report discussing investigation of the relation of uranium and phosphate in the Phosphoria formation...
Report discussing the results of geologic drilling of the land-pebble phosphate district in Florida....
Report describing the geology of the land-pebble phosphate district on the Gulf Coastal Plain of Flo...
Report discussing the U.S. Geological Survey's investigation of the stratigraphy of the Phosphoria f...
Report discussing the distribution, composition, and origin of the phosphate deposits in the land-pe...
Report discussing the U.S. Geological Survey's investigation of the stratigraphy of the Phosphoria f...
Report discussing the U.S. Geological Survey's investigation of stratigraphy of parts of the Phospho...
Report discussing an investigation of the Centennial Range of Montana and Idaho, and the phosphate d...
From introduction: The principal objective of the program is to make detailed geologic maps of the a...
Report presenting data from part of a study aimed at analyzing and mapping out stratigraphic section...
The following report presents the results of part of a geologic study of the phosphate deposits in c...
From abstract: The land-pebble phosphate district of Florida is a part of the Gulf Coastal Plain. Th...
Semiannual report describing the U.S. Geological Survey's progress in searching for radioactive depo...
Report discussing a petrographic study of the uranium ore-producing formations of the Colorado Plate...
From abstract: The two topmost zones of the Bone Valley formation at the Homeland mine are a phospha...
Report discussing investigation of the relation of uranium and phosphate in the Phosphoria formation...