Color copies of photomicrograph figures that accompany a report studying uranium in granites in the southwestern United States.

Chemical compositions of chlorite and sericite from one production well in the Roosevelt geothermal system have been determined by electron probe methods and compared with compositions of chlorite and sericite from porphyry copper deposits. Modern system sericite and chlorite occur over a depth interval of 2 km and a temperature interval of 250/sup 0/C.

Results obtained from a program designed to locate a low- or moderate-temperature geothermal resource that might exist beneath Hill Air Force Base (AFB), Ogden, Utah are discussed. A phased exploration program was conducted at Hill AFB. Published geological, geochemical, and geophysical reports on the area were examined, regional exploration was conducted, and two thermal gradient holes were drilled. This program demonstrated that thermal waters are not present in the shallow subsurface at this site. (MHR)

This GEOTHERM sample file contains 643 records for Utah. Records may be present which are duplicates for the same analyses. A record may contain data on location, sample description, analysis type (water, condensate, or gas), collection condition, flow rates, and the chemical and physical properties of the fluid. Stable and radioactive isotopic data are occasionally available. Some records may contain only location and temperature. This compilation should contain all the chemical data for geothermal fluids in Utah available as of December, 1981. 7 refs. (ACR)

A method for determining the background geothermal gradient values through the analysis of temperature measurements at multiple depths to 3 m and recorded over a time span of several days is presented. The analysis is based on the amplitude decay and phase shift of temperature waves with depth. Diurnal and other high frequency temperature variations are used to compute thermal diffusivities which in turn are used to model and remove the effect of the annual temperature wave. The analysis considers both a homogeneous half space and a two layer medium consisting of an overburden of finite thickness overlying a semi-infinite substratum. The method was tested in three holes in the Crystal Hot Springs geothermal field. Temperatures in each hole were recorded once a minute over a period of three days with a probe containing thermistors at eight different depths. Five of the thermistors were positioned at shallow depths (less than or equal to 0.5 m) to monitor diurnal and other high frequency waves and three at greater depths (greater than or equal to 1 m) to measure lower frequency variations. Since measurements were recorded at only three sites, the accuracy and reliability of the method is not fully evaluated. Potential …

Second volume of a report documenting a high-sensitivity airborne radiometric and magnetic survey of the Ogden and Salt Lake City quadrangles including results of data interpretation, significance factor profile maps, stacked profiles, and histograms.

This report follows a 12-hole drilling program that was conducted on the northwestern flank of the San Rafael swell of eastern Utah.

"This report presents engineering details, statistics, and individual borehole histories of the 27 holes drilled for this project." (from Introduction)

Uranium deposits in the precambrian quartz-pebble deposits of the Raft River area in northwestern Utah and southcentral Idaho are examined. A total of 1214 geochemical samples were acquired for the study, particularly 334 water samples, 616 stream sediment samples, and 264 rocks.

This report is an issue of the original draft copy of the "Interim Staff Report on Uranium Exploration on the Colorado Plateau", dated June 1951. The original draft copy was only recently located and is being published at this time because of the interest in the contained historical content.

Appendix containing tabulated rock sample analyses data to accompany a report on U.S. uranium resources in the Delta quadrangle in Utah.

This report presents the results of a mineral survey of the Starvation Point Wilderness Study Area (AZ-010-005/UT-040-057), Mohave County, Arizona and Washington County, Utah.

From introduction: This study is part of the United States Department of Energy's National Uranium Resource Evaluation Program to understand the geologic setting, amount, and availability of uranium resources within the boundaries of the United States.

Appendix containing tabulated field data and chemical analyses of stream sediment samples to accompany a report on U.S. uranium resources in the Delta quadrangle, Utah.

Appendix containing field data and chemical analyses of ground and surface water samples to accompany a report on U.S. uranium resources in the Delta quadrangle, Utah.

Appendix containing uranium occurrence reports for the Delta quadrangle to accompany a report on U.S. uranium resources in Utah.

Appendix containing a statistical summary of geochemical data from stream sediment, ground and surface water samples to accompany a report on U.S. uranium resouces in the Delta quadrangle

Volume II of a report regarding an aerial radiometric and magnetic survey of the Brushy Basin, Utah. the report includes multi-variable radiometric stacked data profiles, magnetic and ancillary stacked data profiles, radiometric and magnetic contour maps, a multi-variant map, a geochemical analysis map, geochemical flight line composite map, geologic base map, and a geologic flight line composite map.

Fourth volume of a report regarding graphic data from an aeiral radiometric and magnetic survey of Brushy Basin, Utah. The report includes multi-variable radiometric stacked data profiles, magnetic and ancillary stacked data profiles, radiometric and magnetic contour maps, a multi-variant map, geochemical analysis map, geochemical flight line composite map, geologic base map, and geologic flight line composite map.

This is the second volume of the final report on the analyses of a systematic airborne gamma radiation and total magnetic survey for the area identified as Marysvale, in the Richfield quadrangle in southwestern Utah. This volume contains the 10-variable radiometric stacked profile data for the entire survey area.

This is the fourth volume of the final report on the analyses of a systematic airborne gamma radiation and total magnetic survey for the area identified as Marysvale, in the Richfield quadrangle in southwestern Utah. This volume contains flight line maps, radiometric and magnetic contour maps, multi-variate analysis maps, and geochemical composite and analysis maps.

This report describes an investigation of the effects of stream channelization on fish and macro-invertebrates in low gradient reaches of Blacksmith Fork River and the Logan River in the floodplain of Cache Valley in northern Utah. Channelization adversely affected both fish and macro-invertebrate populations and biomass, with the severity of impact directly related to the amount and duration of disturbance of the physical habitat.

"The purpose of this profile is to summarize the ecological information available for and relevant to stream and riparian habitats of the Great Basin. The Great Basin comprises the northern half of the Basin and Range physiographic province and covers most of Nevada and western Utah and portions of California, Oregon, and Idaho. The entire basin actually consists of numerous subbasins and mountain ranges which present an extremely diverse physical setting" (p. iii).

Abstract: The Fish Springs Range Wilderness Study Area (UT-050-127) includes most of the Fish Springs Range and is located north of the House Range, about 50 miles northwest of the city of Delta, Utah. A mineral resource study of the 33,840-acre area was completed in 1987 by the U.S. Geological Survey and U.S. Bureau of Mines. The northwestern and southeastern parts of the wilderness study area contain inferred subeconomic resources of high-purity quartzite. No metallic mineral resources were identified in the study area, but more than 17 million pounds of lead, 2.6 million ounces of silver, and minor copper, zinc, and gold have been produced from the Fish Springs mining district, which is immediately outside the northwest boundary of the wilderness study area. The potential for undiscovered deposits of these metals and molybdenum is high near the northern end of the study area, adjacent to the mining district, moderate near the southern end, and low in the remainder of the area. The resource potential for undiscovered deposits of high-purity limestone and dolomite is moderate throughout the study area except where quartzite is present; potential for undiscovered low-temperature geothermal resources and for oil and gas is low throughout the study area.