Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
Articles 1 - 5 of 5
Full-Text Articles in Physical Sciences and Mathematics
Geology Of The Oquirrh Mountains, Utah, United States Geological Survey
Geology Of The Oquirrh Mountains, Utah, United States Geological Survey
All U.S. Government Documents (Utah Regional Depository)
The Oquirrh Mountains are located in north-central Utah, immediately south of the Great Salt Lake, in the easternmost part of the Basin and Range physiographic province. The range consists of northerly-trending aligned peaks 56 kilometers long flanked on the west by Tooele and Rush Valleys and on the east by Jordan and Cedar Valleys. The range hosts several of the more prominent base- and precious-metal and desseminated-gold mining areas in the western United States. The 130-year old Bingham porphyry copper mining district, which is of world-class magnitude in the central part of the range, is still active. The Mercur mining …
Geology And Mining Industry Of The Tintic District, Utah, George Warren Tower, Jr., George Otis Smith
Geology And Mining Industry Of The Tintic District, Utah, George Warren Tower, Jr., George Otis Smith
All U.S. Government Documents (Utah Regional Depository)
The field work upon which this report is based was begun in July, 1897, and continued without interruption until December of the same year. The area studied is approximated 15 miles square and contains 234 square miles. The topographic maps, which are two in number, were prepared under the direction of Mr. R. U. Goode, Mr. S. S. Gannett doing the triangulation and Messrs. Marshall and Griswold the topography in the fall of 1896 and summer of 1897. The mapping is done on two scales; the larger area, approximately 15 miles square, is mapped on a scale of 1:62,500. This …
Geologic Map And Coal Sections Of The Red Point Quadrangle, Eugene G. Elllis, U.S. Forest Service, U.S. Geological Survey, Joseph R. Frank
Geologic Map And Coal Sections Of The Red Point Quadrangle, Eugene G. Elllis, U.S. Forest Service, U.S. Geological Survey, Joseph R. Frank
All U.S. Government Documents (Utah Regional Depository)
Red Point quadrangle, in Emery County in central Utah, was mapped in 1979 as a part of the U.S. Geological Survey's progress to evaluate lands in the public domain for potential coal leasing. Mapping was done using U.S. Forest Service color aerial photographs at a scale of 1:15,640 and U.S. Geological Survey black-and-white aerial photographs at a scale of 1:30,000. The quadrangle was mapped previously by Spicker (1931) at a scale of 1:62,500.
Hydrothermal Alteration At The Roosevelt Hot Springs Thermal Area, Utah: Petrographic Characterization Of The Alteration To 2 Kilometers Depth, J. M. Ballantyne, W. T. Parry
Hydrothermal Alteration At The Roosevelt Hot Springs Thermal Area, Utah: Petrographic Characterization Of The Alteration To 2 Kilometers Depth, J. M. Ballantyne, W. T. Parry
All U.S. Government Documents (Utah Regional Depository)
Hydrothermal alteration in drill cuttings from Thermal Power drillhole 14-2, Roosevelt Hot Springs Thermal area, has been studied petrographically. The hole is sited in alluvium approximately 1.6 km southeast of the old Resort and was rotary drilled to a depth of 1866.0 m. The exact hole location is 2310 FNL, 350 FWL, Sec. 2, Twp 27S, Rge 9W, elevation 1908.5 m. Core was extracted from 792.5 to 795.5 m. Thin sections were made from samples 15.2 m intervals of drill cuttings collected at 1.5 or 3.0 m intervals during drilling. Thin sections were made of 1.5 or 3.0 m intervals …
Quaternary Rhyolite From The Mineral Mountains, Utah, U.S.A., S. H. Evans, Jr., W. P. Nash, University Of Utah, Department Of Geology And Geophysics
Quaternary Rhyolite From The Mineral Mountains, Utah, U.S.A., S. H. Evans, Jr., W. P. Nash, University Of Utah, Department Of Geology And Geophysics
All U.S. Government Documents (Utah Regional Depository)
A suite of silicic volcanic rocks is associated with the Roosevelt Hot Springs geothermal area in southwestern Utah. The volcanic sequence includes Tertiary rhyolite 8 m.y. old and obsidian, ash and rhyolite of Quaternary age. The Quaternary lavas are characterized by high silica content (76.5% SiO2) and total alkalies in excess of 9 percent. Obsidians commonly contain greater amounts of flourine than water. Two older flows (0.8 m.y.) can be distinguished from younger dome and pyroclastic material (approximately 0.5 m.y.) by subtle differences in their chemistry. The mineralogy of the rhyolites consists of alkali feldspar, plagioclase, and small amounts of …