A report pertaining to an exploration by the U.S. Geologic Survey in the southern part of the Uravan district for uranium-vanadium deposits. The explored area is in Montrose County, Colorado. The rocks exposed in the area are gently dripping marine and terrestial formations ranging in age from late Paleozoic to late Mesozoic.

"Between April 21, 1949, and August 20, 1955, the U.S. Geological Survey explored the southern part of the Uravan district for uranium-vanadium deposits and to appraise the uranium-vanadium reserves in the area."

A report about the vanadium-uranium deposit at the Rifle and Garfield mines which lies in the Wingate sandstone and the overlying Entrada sandstone.

This report follows a preliminary geophysical investigation that was made in the Colorado-Utah Plateau in search of carnotite ore deposits.

The following report covers a chemical study that was made of the Salt Wash member of the Morrison formation of Jurassic age in the Jo Dandy area, Montrose County, Colorado in 1954. The chemical study was made to investigate the distribution of elements in the host rocks with emphasis on the pattern of variation as related to the position of known ore bodies, and to determine average concentrations of some of the elements in the major rock types.

Report discussing "field and laboratory studies of ground-water conditions in the carnotite-bearing Morrison formation in southwestern Colorado and southeastern Utah" with the objective of determining "possible relations between ground waters and the carnotite deposits."

The following report covers a broad-scale study of the distribution of elements in the rocks and ores of the Colorado Plateau. Discussed here are the results from semiquantitative spectrographic analyses of approximately 800 samples of rocks and ores that form the principal starting point for the discussion. This paper examines the relevance of the results of the study of the distribution of elements to the special problem of the source or sources of the elements contained in unusual abundance in the sandstone-type uranium ores.

The following report covers notes on the Moenkopi formation of Triassic age that is widely exposed in the salt anticline region in the southeastern Utah and southwestern Colorado. Within this report is the mapping of four members of contrasting lithology in the Moenkopi in the salt anticline region.

Abstract: During parts of July, August, and September 1951, a reconnaissance was conducted in parts of Colorado, Wyoming, Utah, and Idaho in search of new deposits of uranium-bearing carbonaceous rocks. One significant uranium occurrence was found, the Fall Creek deposit, Bonneville County, Idaho. Several additional localities were discovered that contain uranium in concentrations many times that normally found in carbonaceous rocks.

Report discussing the geology and ore deposits of the Placerville area of San Miguel County, Colorado. "This report is an abstract of a paper with the same title that is planned for publication as a Geological Survey bulletin."