Geology of the Sulphurdale geothermal-resource area, Beaver and Millard Counties, Utah

Geology of the Sulphurdale geothermal-resource area, Beaver and Millard Counties, Utah PDF

Author: P.D. Rowley

Publisher: Utah Geological Survey

Published: 2013-04-15

Total Pages: 33

ISBN-13:

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This 27-page report analyzes new detailed (1:12,000 scale) geologic mapping of a 14 square mile area centered by the high-temperature (350°F) Sulphurdale heat source, which at the surface makes up a circular area about a mile in diameter that is likely caused by a magma body at depth. A former small steam-driven geothermal electric power plant in the circular area is being replaced by a larger plant (Enel Green Power North America) that will use binary technology. Five cross sections tied to and at the same scale as the map help interpret the likely extent of the geothermal resource. Sulfur derived from evaporites at depth was initially mined at a solfatara above the heat source; associated sulfuric acid seeped downward to remove the Kaibab Limestone and Toroweap Formation from the subsurface.

Multielement Geochemical Exploration Data for the Cove Fort-Sulphurdale Known Geothermal Resource Area, Beaver and Millard Counties, Utah

Multielement Geochemical Exploration Data for the Cove Fort-Sulphurdale Known Geothermal Resource Area, Beaver and Millard Counties, Utah PDF

Author:

Publisher:

Published: 2005

Total Pages:

ISBN-13:

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Multielement geochemical exploration data have been acquired for the Cove Fort-Sulphurdale Known Geothermal Resource Area (KGRA). This was accomplished by analysis of both whole rock and +3.3 specific gravity concentrate samples from cuttings composites collected from shallow rotary drill holes. Areal distributions are reported for arsenic, mercury, lead and zinc. These are elements indicated by previous studies to be broadly zoned around thermal centers in geothermal systems and thus to be useful for selecting and prioritizing drilling targets. Results from this work suggest that reservoir temperature and/or reservoir to surface permeability, and thus possibly overall potential for a geothermal resource, increase northward beneath the approximately 18 square mile area containing shallow drill holes, possibly to beyond the northern limits of the area. The data provide a basis for development of three principal target models for the geothermal system but do not permit prioritization of these models. It is recommended that geochemical, geological, and temperature gradient surveys be expanded northward from the present survey area to more fully define the area which appears to have the best resource potential and to aid prioritization of the target models.

Annotated Geothermal Bibliography of Utah

Annotated Geothermal Bibliography of Utah PDF

Author:

Publisher: Utah Geological Survey

Published: 1986-01-15

Total Pages: 84

ISBN-13: 155791088X

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A bibliography of Utah geothermal references through 1984. These references which directly pertain to a geothermal resources are annotated. The annotations are intended to inform the reader of the information contained in the article, not to summarize the results. Accompanying the bibliography is a list and description of geothermal projects and commercial geothermal developments in Utah from 1966 to the present that have been wholly or partially funded through Federal or State programs. The references listed in the project descriptions are keyed to the bibliography. Most of this work is by government agencies or universities. Private or industry-funded geothermal developments are not listed. The references are indexed geographically either under 1.) United States (national studies), 2.) regional – western United States or physiographic province, 3.) Utah – statewide and regional, or 4.) county. Reports concerning a particular hot spring or thermal area are listed under both the thermal area and the county names.

Assessment of Geothermal Energy Potential Sulphurdale Geothermal Field, Sulphurdale, Utah

Assessment of Geothermal Energy Potential Sulphurdale Geothermal Field, Sulphurdale, Utah PDF

Author:

Publisher:

Published: 1984

Total Pages:

ISBN-13:

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The Sulphurdale Geothermal Field is located in Beaver County Utah, within the boundaries of the Cove Fort--Sulphurdale Known Geothermal Resource Area (KGRA). During the past year, three wells drilled in Section 7, T-26-S, R-6-W, have produced dry steam from a fractured volcanic formation located at a depth of about 1100 feet. Two of these three wells are currently prepared to supply steam to a power plant, and one well has been plugged and abandoned. ThermaSource, Inc. was retained by Mother Earth Industries, the operator of the field, to conduct well tests and render an opinion as to the nature of the geothermal reserves and assess the commercial potential of these reserves. Because of the limited area that has been explored to date, there can be no assurance that the reserves estimate will prove accurate. Project economics are based on parameters believed to be accurate, but there is no assurance that such cash flow projections will be realized.

Geology of Millard County, Utah

Geology of Millard County, Utah PDF

Author: Lehi F. Hintze

Publisher: Utah Geological Survey

Published: 2003

Total Pages: 324

ISBN-13: 1557916926

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This bulletin serves not only to introduce the non-geologist to the rich geology of Millard County, but also to provide professional geologists with technical information on the stratigraphy, paleontology, and structural geology of the county. Millard County is unique among Utah’s counties in that it contains an exceptionally complete billion-year geologic record. This happened because until about 200 million years ago the area of present-day Millard County lay near sea level and was awash in shallow marine waters on a continental shelf upon which a stack of fossil-bearing strata more than 6 miles (10 km) thick slowly accumulated. This bulletin summarizes what is known about these strata, as well as younger rocks and surficial deposits in the county, and provides references to scientific papers that describe them in greater detail. Mountains North 30 x 60 (1:100,000-scale) quadrangles. These companion maps and this bulletin portray the geology of Millard County more completely and accurately than any previously published work.

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