Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.2172/6716405 |
| 报告编号 | UCRL-52469 |
| 来源ID | OSTI_ID: 6716405 |
| Hydrogeochemical and stream sediment reconnaissance basic data report for Winnemucca NTMS Quadrangle, Nevada | |
| Puchlik, K.P. | |
| 英文摘要 | Results are presented of the geochemical reconnaissance sampling in the Winnemucca 1/sup 0/ x 2/sup 0/ quadrangle of the National Topographic Map Series (NTMS). Wet and dry sediment samples were collected throughout the 18,770-km/sup 2/ arid to semi-arid area and water samples at available streams, springs and wells. Results of neutron activation analyses are presented of uranium and trace elements and other measurements made in the field and laboratory in tabular hardcopy and microfiche format. The report includes 5 full-size overlays for use with the Winnemucca NTMS 1:250,000 quadrangle. Water sampling sites, water-sample uranium and thorium concentrations, sediment sampling sites, and sediment-sample total uranium and thorium concentrations are shown on the separate overlays. General geological and structural descriptions of the area are given and the 12 known uranium occurrences are described. The results indicate that the uranium geochemistry of the area is diverse. High concentrations (greater than 5 ppM) of uranium in sediments are associated mainly with rhyolitic ash falls and flows and silicic intrusives. In defining areas of interest the ratio of relatively insoluble thorium to uranium was considered. The anomalies as defined are then the sediment samples containing low Th/U and high uranium concentrations. These areas consist mainly of fluvial-lacustrine units. Most known uranium occurrences were also identified by this technique. The main Humboldt River shows an irregular increase in uranium concentration downstream which may be related to agricultural modification of the stream flow. U/Cl ratios were used to evaluate the effects of evaporative concentration. Of interest are spring and tributary waters containing high U/Cl and high uranium values. These waters mainly drain acid intrusives, silicic volcanic rocks and related sediments. One such area is the Shoshone and Cortez Mountains. |
| 出版年 | 1978 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| 来源学科分类 | 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS ; NEVADA ; THORIUM ORES ; URANIUM DEPOSITS ; GEOCHEMICAL SURVEYS ; ACTIVATION ANALYSIS ; CHLORIDES ; QUANTITY RATIO ; SEDIMENTS ; STREAMS ; URANIUM ; ACTINIDES ; CHEMICAL ANALYSIS ; CHLORINE COMPOUNDS ; ELEMENTS ; GEOLOGIC DEPOSITS ; HALIDES ; HALOGEN COMPOUNDS ; METALS ; NORTH AMERICA ; ORES ; RESOURCES ; SURFACE WATERS ; USA ; WESTERN REGION 050200* -- Nuclear Fuels-- Exploration-- (-1987) |
| URL | http://www.osti.gov/scitech/servlets/purl/6716405 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/262041 |
| 推荐引用方式 GB/T 7714 | Puchlik, K.P.. Hydrogeochemical and stream sediment reconnaissance basic data report for Winnemucca NTMS Quadrangle, Nevada,1978. |
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