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Author : Zhixin Yi
Publisher :
ISBN 13 :
Total Pages : 560 pages
Book Rating : 4.3/5 (121 download)
Download or read book On the Shallow Hydrothermal Regime of the Salton Sea Geothermal Field, California written by Zhixin Yi and published by . This book was released on 1987 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Shallow Hydrothermal Regime of the East Brawley and Glamis Known Geothermal Resource Areas, Salton Trough, California written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal gradients and thermal conductivities were obtained in real time using an in situ heat-flow technique in 15 shallow (90 to 150 m) wells drilled between Brawley and Glamis in the Imperial Valley, Southern California. The in situ measurements were supplemented by follow-up conventional temperature logs in seven of the wells and by laboratory measurements of thermal conductivity on drill cuttings. The deltaic sedimentary material comprising the upper approx. 100 m of the Salton Trough generally is poorly sorted and high in quartz resulting in quite high thermal conductivities (averaging 2.0 Wm−1 K−1 as opposed to 1.2 to 1.7 for typical alluvium). A broad heat-flow anomaly with maximum of about 200 mWm−2 (approx. 5 HFU) is centered between Glamis and East Brawley and is superimposed on a regional heat-flow high in excess of 100 mWm−2 (> 2.5 HFU). The heat-flow high corresponds with a gravity maximum and partially with a minimum in electrical resistivity, suggesting the presence of a hydrothermal system at depth in this area.
Author : W. A. Elders
Publisher :
ISBN 13 :
Total Pages : 168 pages
Book Rating : 4.3/5 (121 download)
Download or read book The Salton Sea Geothermal Field, California, as a Near-field Natural Analog of a Radioactive Waste Repository in Salt written by W. A. Elders and published by . This book was released on 1983 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since high concentrations of radionuclides and high temperatures are not normally encountered in salt domes or beds, finding an exact geologic analog of expected near-field conditions in a mined nuclear waste repository in salt will be difficult. The Salton Sea Geothermal Field, however, provides an opportunity to investigate the migration and retardation of naturally occurring U, Th, Ra, Cs, Sr and other elements in hot brines which have been moving through clay-rich sedimentary rocks for up to 100,000 years. The more than thirty deep wells drilled in this field to produce steam for electrical generation penetrate sedimentary rocks containing concentrated brines where temperatures reach 365/sup 0/C at only 2 km depth. The brines are primarily Na, K, Ca chlorides with up to 25% of total dissolved solids; they also contain high concentrations of metals such as Fe, Mn, Li, Zn, and Pb. This report describes the geology, geophysics and geochemistry of this system as a prelude to a study of the mobility of naturally occurring radionuclides and radionuclide analogs within it. The aim of this study is to provide data to assist in validating quantitative models of repository behavior and to use in designing and evaluating waste packages and engineered barriers. 128 references, 33 figures, 13 tables.
Author : P. Kasameyer
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (94 download)
Download or read book Development And Application Of A Hydrothermal Model For The Salton Sea Geothermal Field, California written by P. Kasameyer and published by . This book was released on 1984 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: A simple lateral flow model adequately explains many of the features associated with the Salton Sea Geothermal Field. Earthquake swarms, a magnetic anomaly, and aspects of the gravity anomaly are all indirect evidence for the igneous activity which is the ultimate source of heat for the system. Heat is transferred from this area of intrusion by lateral spreading of hot water in a reservoir beneath an impermeable cap rock. A two dimensional analytic model encompassing this transport mechanism matches general features of the thermal anomaly and has been used to estimate the age of the presently observed thermal system. The age is calculated by minimizing the variance between the observed surface heat-flow data and the model. Estimates of the system age for this model range from 3,000 to 20,000 years.
Download or read book Geological, Geophysical, And Thermal Characteristics Of The Salton Sea Geothermal Field, California written by and published by . This book was released on 1981 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Salton Sea Geothermal Field is the largest water-dominated geothermal field in the Salton Trough in Southern California. Within the trough, local zones of extension among active right-stepping right-lateral strike-slip faults allow mantle-derived magmas to intrude the sedimentary sequence. The intrusions serves as heat sources to drive hydrothermal systems. We can characterize the field in detail because we have an extensive geological and geophysical data base. The sediments are relatively undeformed and can be divided into three categories as a function of depth: (1) low-permeability cap rock, (2) upper reservoir rocks consisting of sandstones, siltstones, and shales that were subject to minor alterations, and (3) lower reservoir rocks that were extensively altered. Because of the alteration, intergranular porosity and permeability are reduced with depth. permeability is enhanced by renewable fractures, i.e., fractures that can be reactivated by faulting or natural hydraulic fracturing subsequent to being sealed by mineral deposition. In the central portion of the field, temperature gradients are high near the surface and lower below 700 m. Surface gradients in this elliptically shaped region are fairly constant and define a thermal cap, which does not necessarily correspond to the lithologic cap. At the margin of the field, a narrow transition region, with a low near-surface gradient and an increasing gradient at greater depths, separates the high temperature resource from areas of normal regional gradient. Geophysical and geochemical evidence suggest that vertical convective motion in the reservoir beneath the thermal cap is confined to small units, and small-scale convection is superimposed on large-scale lateral flow of pore fluid. Interpretation of magnetic, resistivity, and gravity anomalies help to establish the relationship between the inferred heat source, the hydrothermal system, and the observed alteration patterns. A simple hydrothermal model is supported by interpreting the combined geological, geophysical, and thermal data. In the model, heat is transferred from an area of intrusion by lateral spreading of hot water in a reservoir beneath an impermeable cap rock.
Download or read book Results from Shallow Research Drilling at Inyo Domes, Long Valley Caldera, California and Salton Sea Geothermal Field, Salton Trough, California written by and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This report reviews the results from two shallow drilling programs recently completed as part of the United States Department of Energy Continental Scientific Drilling Program. The purpose is to provide a broad overview of the objectives and results of the projects, and to analyze these results in the context of the promise and potential of research drilling in crustal thermal regimes. The Inyo Domes drilling project has involved drilling 4 shallow research holes into the 600-year-old Inyo Domes chain, the youngest rhyolitic event in the coterminous United States and the youngest volcanic event in Long Valley Caldera, California. The purpose of the drilling at Inyo was to understand the thermal, chemical and mechanical behavior of silicic magma as it intrudes the upper crust. This behavior, which involves the response of magma to decompression and cooling, is closely related to both eruptive phenomena and the establishment of hydrothermal circulation. The Salton Sea shallow research drilling project involved drilling 19 shallow research holes into the Salton Sea geothermal field, California. The purpose of this drilling was to bound the thermal anomaly, constrain hydrothermal flow pathways, and assess the thermal budget of the field. Constraints on the thermal budget links the local hydrothermal system to the general processes of crustal rifting in the Salton Trough.
Author : P. Kasameyer
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (94 download)
Download or read book Development And Application Of A Hydrothermal Model For The Salton Sea Geothermal Field, California written by P. Kasameyer and published by . This book was released on 1984 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A simple lateral flow model adequately explains many of the features associated with the Salton Sea Geothermal Field. Earthquake swarms, a magnetic anomaly, and aspects of the gravity anomaly are all indirect evidence for the igneous activity which is the ultimate source of heat for the system. Heat is transferred from this area of intrusion by lateral spreading of hot water in a reservoir beneath an impermeable cap rock. A two dimensional analytic model encompassing this transport mechanism matches general features of the thermal anomaly and has been used to estimate the age of the presently observed thermal system. The age is calculated by minimizing the variance between the observed surface heat-flow data and the model. Estimates of the system age for this model range from 3,000 to 20,000 years.
Author : National Association of Geology Teachers. Far Western Section. Spring Field Conference
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.F/5 ( download)
Download or read book Geology and Geothermal Energy of the Salton Trough written by National Association of Geology Teachers. Far Western Section. Spring Field Conference and published by . This book was released on 1985 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hsiang-Yuan Lei
Publisher :
ISBN 13 :
Total Pages : 378 pages
Book Rating : 4.3/5 (121 download)
Download or read book Porosity and Hydrothermal Alteration Determined from Wireline Logs from the Salton Sea Geothermal Field, California, U.S.A. written by Hsiang-Yuan Lei and published by . This book was released on 1987 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Be in the Salton Sea Geothermal System, California (USA) written by and published by . This book was released on 1988 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Salton Sea Geothermal System lies in the old Colorado River Delta, where sediments have been metamorphosed by hydrothermal processes. Fluids, from well Fee No. 5 and deep hole SSSDP California State 2-14, as well as rocks from the deep hole were studied for 1°Be and 9Be. In the solid samples 1°Be concentration ranges from 29 to 259 x 106 atom/g and 9Be from 0.49 to 2.52 ppM. The 1°Be concentration in the geothermal waters ranges from 2 x 103 to 2.9 /times/ 106 atom/g and 9Be from 0.7 to 16.6 ppB. Compared to the steady-state inventory which represents the quantity of 1°Be expected from rain deposition alone ((approximately)1 /times/ 1012 atom/cm2), the 1°Be inventory in the deep core is 3 orders of magnitude higher (>1 /times/ 1015 atom/cm2). This indicates that most 1°Be is inherited and that the sediments hosting the geothermal field down to 3250m are young, less than few million year old. 1°Be and 9Be Kds decrease from surface to bottom (3333 to 48 and 727 to 393, respectively) expressing the strong leaching effect of the solid material by the geothermal waters. This process is more active at depth where pH is
Author :
Publisher :
ISBN 13 :
Total Pages : 668 pages
Book Rating : 4.3/5 (91 download)
Download or read book Geothermal Energy Update written by and published by . This book was released on 1976 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Charles Steger Oakes
Publisher :
ISBN 13 :
Total Pages : 256 pages
Book Rating : 4.3/5 (121 download)
Download or read book Evidence for Replacement of Dilute Hydrothermal Solutions by Hot Hypersaline Brine in the Northeastern Part of the Salton Sea Geothermal System, California written by Charles Steger Oakes and published by . This book was released on 1988 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 616 pages
Book Rating : 4.:/5 (3 download)
Download or read book Energy Research Abstracts written by and published by . This book was released on 1987 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : University of California, Riverside. Institute of Geophysics and Planetary Physics
Publisher :
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.:/5 (123 download)
Download or read book The Salton Sea Geothermal Field, California, as a Near-field Natural Analog of a Radioactive Repository in Salt written by University of California, Riverside. Institute of Geophysics and Planetary Physics and published by . This book was released on 1983 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : W. A. Elders
Publisher :
ISBN 13 :
Total Pages : 136 pages
Book Rating : 4.F/5 ( download)
Download or read book Geology and Geothermics of the Salton Trough written by W. A. Elders and published by . This book was released on 1979 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Umur Bozkurt
Publisher :
ISBN 13 :
Total Pages : 444 pages
Book Rating : 4.3/5 (121 download)
Download or read book A Fluid Inclusion Study of Selected Boreholes written by Umur Bozkurt and published by . This book was released on 1989 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : William Leonard Osborn
Publisher :
ISBN 13 :
Total Pages : 356 pages
Book Rating : 4.3/5 (121 download)
Download or read book Formation Diagenesis, and Metamorphism of Sulfate Minerals in the Salton Sea Geothermal System, California, U.S.A. written by William Leonard Osborn and published by . This book was released on 1989 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
