干旱区生态环境知识资源中心(Arid): Part I - Geology and Geochemistry of the Roosevelt Hot Springs - A Summary. Part II - Geophysics of the Roosevelt Hot Springs Thermal Area, Utah. Part III

Arid

DOI	10.2172/893367
报告编号	UU-77-14-Z
来源ID	OSTI_ID: 893367
	Part I - Geology and Geochemistry of the Roosevelt Hot Springs - A Summary. Part II - Geophysics of the Roosevelt Hot Springs Thermal Area, Utah. Part III - Roosevelt Hot Springs Area Field Trip
	Parry, W.T.; Ward, S.H.; Nash, W.P. (and others)
英文摘要	The Roosevelt Hot Springs Thermal Area is a newly discovered geothermal power prospect. Seven production wells have been drilled with a maximum flow capability averaging 4.5 x 10{sup 5} kg of combined vapor and liquid per hour at a bottom hole temperature of 260 C. The thermal area is located on the western-margin of the Mineral Mountains, which consist dominantly of a Tertiary granitic pluton 32 km long by 8 km wide. Rhyolitic tuffs, flows, and domes cover about 25 km{sup 2} of the crest and west side of the Mineral Mountains within 5 km of the thermal area. The rhyolitic volcanism occurred between 0.8 and 0.5 m.y. ago and constitutes a major Pleistocene thermal event believed to be significant to the evaluation of the Roosevelt Thermal area. Thermal waters of the dry spring, a seep, and the deep reservoir are dilute (ionic strength 0.1 to 0.2) sodium chloride brines. Spring deposits consist of siliceous sinter and manor sulfur. Alluvium is cemented by sinter and altered in varying degrees by hot, acid-sulfate water to opal and alunite at the surface, grading successively to alunite-kaolinite, alunite-kaolinite-montmorillonite, and muscovite-pyrite within 60 m of the surface. Observed alteration and water chemistry are consistent with a model in which hot aqueous solutions containing H{sub 2}S and sulfate convectively rise along major fractures. Hydrogen sulfide oxides to sulfate near the surface decreasing the pH and causes alunite to form. Opal precipitates as the solutions cool. Kaolinite, muscovite, and K-feldspar are formed in sequence, as the thermal water percolated downward and hydrogen ion and sulfate are consumed.
出版年	1977
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	15 GEOTHERMAL ENERGY ; ALUNITE ; AQUEOUS SOLUTIONS ; BRINES ; FRACTURES ; GEOCHEMISTRY ; GEOLOGY ; GEOPHYSICS ; HYDROGEN IONS ; HYDROGEN SULFIDES ; KAOLINITE ; MOUNTAINS ; MUSCOVITE ; OPALS ; OXIDES ; ROOSEVELT HOT SPRINGS ; SODIUM CHLORIDES ; SULFATES ; SULFUR ; VOLCANISM ; WATER CHEMISTRY Geothermal Legacy
URL	http://www.osti.gov/scitech/servlets/purl/893367
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/261951
推荐引用方式 GB/T 7714	Parry, W.T.,Ward, S.H.,Nash, W.P. . Part I - Geology and Geochemistry of the Roosevelt Hot Springs - A Summary. Part II - Geophysics of the Roosevelt Hot Springs Thermal Area, Utah. Part III - Roosevelt Hot Springs Area Field Trip,1977.