Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.2172/6738051 |
| 报告编号 | DOE/ID/12784-1 |
| 来源ID | OSTI_ID: 6738051 |
| Geothermal fluid genesis in the Great Basin | |
| Flynn, T.; Buchanan, P.K. | |
| 英文摘要 | Early theories concerning geothermal recharge in the Great Basin implied recharge was by recent precipitation. Physical, chemical, and isotopic differences between thermal and non-thermal fluids and global paleoclimatic indicators suggest that recharge occurred during the late Pleistocene. Polar region isotopic studies demonstrate that a depletion in stable light-isotopes of precipitation existed during the late Pleistocene due to the colder, wetter climate. Isotopic analysis of calcite veins and packrat midden megafossils confirm the depletion event occurred in the Great Basin. Isotopic analysis of non-thermal springs is utilized as a proxy for local recent precipitation. Contoured plots of deuterium concentrations from non-thermal and thermal water show a regional, systematic variation. Subtracting contoured plots of non-thermal water from plots of thermal water reveals that thermal waters on a regional scale are generally isotopically more depleted. Isolated areas where thermal water is more enriched than non-thermal water correspond to locations of pluvial Lakes Lahontan and Bonneville, suggesting isotopically enriched lake water contributed to fluid recharge. These anomalous waters also contain high concentrations of sodium chloride, boron, and other dissolved species suggestive of evaporative enrichment. Carbon-age date and isotopic data from Great Basin thermal waters correlate with the polar paleoclimate studies. Recharge occurred along range bounding faults. 151 refs., 62 figs., 15 tabs. |
| 出版年 | 1990 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 15 GEOTHERMAL ENERGY ; 58 GEOSCIENCES ; 54 ENVIRONMENTAL SCIENCES ; GEOTHERMAL RESOURCES ; EVALUATION ; GREAT BASIN ; SITE CHARACTERIZATION ; ISOTOPES ; SAMPLING ; ARCHAEOLOGICAL SITES ; CARBON 14 ; CLIMATES ; COMPARATIVE EVALUATIONS ; CONCENTRATION RATIO ; DATA BASE MANAGEMENT ; DEUTERIUM ; EARTHQUAKES ; ENVIRONMENTAL QUALITY ; GEOCHEMICAL SURVEYS ; GEOLOGIC AGES ; GEOLOGIC FAULTS ; GEOLOGIC FORMATIONS ; GEOTHERMAL POWER PLANTS ; PROGRESS REPORT ; PUBLIC LANDS ; ROCK MECHANICS ; TECTONICS ; TOPOGRAPHY ; TRITIUM ; WATER CHEMISTRY ; WEATHER ; BETA DECAY RADIOISOTOPES ; BETA-MINUS DECAY RADIOISOTOPES ; CARBON ISOTOPES ; CHEMISTRY ; DOCUMENT TYPES ; EVEN-EVEN NUCLEI ; GEOLOGIC FRACTURES ; GEOLOGIC STRUCTURES ; HYDROGEN ISOTOPES ; LIGHT NUCLEI ; MANAGEMENT ; MECHANICS ; NORTH AMERICA ; NUCLEI ; ODD-EVEN NUCLEI ; ODD-ODD NUCLEI ; POWER PLANTS ; RADIOISOTOPES ; RESOURCES ; SEISMIC EVENTS ; STABLE ISOTOPES ; SURVEYS ; THERMAL POWER PLANTS ; USA ; YEARS LIVING RADIOISOTOPES Geothermal Legacy 150100* -- Geothermal Energy-- Resources & Availability ; 152004 -- Geothermal Data & Theory-- Isotope & Trace Element Studies ; 580000 -- Geosciences ; 540330 -- Environment, Aquatic-- Radioactive Materials Monitoring & Transport-- (1990-) ; 150800 -- Geothermal Power Plants |
| URL | http://www.osti.gov/scitech/servlets/purl/6738051 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/260220 |
| 推荐引用方式 GB/T 7714 | Flynn, T.,Buchanan, P.K.. Geothermal fluid genesis in the Great Basin,1990. |
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