Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.epsl.2010.10.006 |
Limited hydrologic response to Pleistocene climate change in deep vadose zones - Yucca Mountain, Nevada | |
Paces, James B.1; Neymark, Leonid A.1; Whelan, Joseph F.1; Wooden, Joseph L.2; Lund, Steven P.3; Marshall, Brian D.1 | |
通讯作者 | Paces, James B. |
来源期刊 | EARTH AND PLANETARY SCIENCE LETTERS
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ISSN | 0012-821X |
出版年 | 2010 |
卷号 | 300期号:3-4页码:287-298 |
英文摘要 | Understanding the movement of water through thick vadose zones, especially on time scales encompassing long-term climate change, is increasingly important as societies utilize semi-arid environments for both water resources and sites viewed as favorable for long-term disposal or storage of hazardous waste. Hydrologic responses to Pleistocene climate change within a deep vadose zone in the eastern Mojave Desert at Yucca Mountain, Nevada, were evaluated by uranium-series dating of finely layered hyalitic opal using secondary ion mass spectrometry. Opal is present within cm-thick secondary hydrogenic mineral crusts coating floors of lithophysal cavities in fractured volcanic rocks at depths of 200 to 300 m below land surface. Uranium concentrations in opal fluctuate systematically between 5 and 550 mu g/g. Age-calibrated profiles of uranium concentration correlate with regional climate records over the last 300,000 years and produce time-series spectral peaks that have distinct periodicities of 100- and 41-ka, consistent with planetary orbital parameters. These results indicate that the chemical compositions of percolating solutions varied in response to near-surface, climate-driven processes. However, slow (micrometers per thousand years), relatively uniform growth rates of secondary opal and calcite deposition spanning several glacial-interglacial climate cycles imply that water fluxes in the deep vadose zone remained low and generally buffered from the large fluctuations in available surface moisture during different climates. Published by Elsevier B.V. |
英文关键词 | vadose zone paleohydrogeology paleoclimate U-series dating secondary ion mass spectrometry Yucca Mountain |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000286284600011 |
WOS关键词 | PAST INFILTRATION FLUXES ; SECONDARY MINERAL RECORD ; TOPOPAH SPRING TUFF ; UNSATURATED-ZONE ; VIABLE METHODOLOGY ; CENTRAL TEXAS ; DEATH-VALLEY ; CRATER FLAT ; DEVILS-HOLE ; CALCITE |
WOS类目 | Geochemistry & Geophysics |
WOS研究方向 | Geochemistry & Geophysics |
来源机构 | United States Geological Survey |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/163843 |
作者单位 | 1.US Geol Survey, Denver Fed Ctr, Denver, CO 80225 USA; 2.Stanford Univ, US Geol Survey, Stanford, CA 94305 USA; 3.Univ So Calif, Dept Earth Sci, Los Angeles, CA 90089 USA |
推荐引用方式 GB/T 7714 | Paces, James B.,Neymark, Leonid A.,Whelan, Joseph F.,et al. Limited hydrologic response to Pleistocene climate change in deep vadose zones - Yucca Mountain, Nevada[J]. United States Geological Survey,2010,300(3-4):287-298. |
APA | Paces, James B.,Neymark, Leonid A.,Whelan, Joseph F.,Wooden, Joseph L.,Lund, Steven P.,&Marshall, Brian D..(2010).Limited hydrologic response to Pleistocene climate change in deep vadose zones - Yucca Mountain, Nevada.EARTH AND PLANETARY SCIENCE LETTERS,300(3-4),287-298. |
MLA | Paces, James B.,et al."Limited hydrologic response to Pleistocene climate change in deep vadose zones - Yucca Mountain, Nevada".EARTH AND PLANETARY SCIENCE LETTERS 300.3-4(2010):287-298. |
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