Groundwater geochemistry and flow in the Spring Mountains, NV: Implications for the Death Valley Regional Flow System
Groundwater geochemistry and flow in the Spring Mountains, NV: Implications for the Death Valley Regional Flow System
复制标题
内华达州斯普林山的地下水地球化学和水流:对死亡谷区域水流系统的影响
DOI:
10.1016/j.jhydrol.2019.124313
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发表时间:
2020
影响因子:
6.4
通讯作者:
Frisbee, Marty D.
中科院分区:
文献类型:
--
作者:
Warix, Sara R.;Rademacher, Laura K.;Meyers, Zachary P.;Frisbee, Marty D.
Groundwater geochemistry and87Sr/86Sr from spring waters in the Spring Mountains, NV were used to understand how groundwater recharging in the Spring Mountains influences regional groundwater flow in the Death Valley Regional Flow System (DVRFS). Previous researchers hypothesized that groundwater from the Spring Mountains contributes to the DVRFS, an interbasin groundwater flow system (IGF). However, the Spring Mountains are geologically heterogeneous, therefore, a uniform contribution of groundwater flow across the range is unlikely. Here, we use spring water geochemistry, spring water and host rock87Sr/86Sr, and observations of the surrounding geology to determine what regions of the Spring Mountains are likely to contribute more flow to the DVRFS. Based on geochemical and isotopic evidence, Spring Mountains groundwater can be divided into three flow regions with distinct geochemical signals reflecting silicate or carbonate water-rock interactions and location relative to major thrust faults. The Keystone Thrust flow region (KST) has a87Sr/86Sr of 0.710–0.711, is recharged by both rain and snow, and weathers both Mesozoic sandstones and Permian and Cambrian carbonate. Central Spring Mountains (CSM) groundwater has a87Sr/86Sr of ~0.708, is primarily recharged by snow, and weathers Permian and Cambrian limestones and dolostones. The Montgomery Hills (MH) flow region has a87Sr/86Sr 0.711–0.733, is recharged by both rain and snow, and weathers both Permian and Cambrian carbonates and Precambrian siliciclastics. Groundwater mixing between flow groups occurs along major thrust faults in the study area, as evidenced by87Sr/86Sr signatures that reflect one flow group and δ18O and δ2H and geochemical signatures that reflect another flow group. The combination of geochemical and isotopic results suggest CSM groundwater is the most likely to reach Death Valley because CSM groundwater composition reflects the geochemical and isotopic signatures of the highly permeable rocks that connect the Spring Mountains to Death Valley. Flow leaving the KST and MH also influences the DVRFS after mixing with CSM groundwater along major thrust faults.
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影响因子:
6.4
作者:
M. Bushman;S. Nelson;D. Tingey;D. Eggett
通讯作者:
D. Eggett
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
B. Vittecoq;P. Reninger;S. Violette;G. Martelet;B. Dewandel;J. Audru
通讯作者:
J. Audru
影响因子:
2.8
作者:
O. Al;A. Woocay;J. Walton
通讯作者:
J. Walton
DOI:
--
发表时间:
1989
期刊:
影响因子:
--
作者:
R. Hershey
通讯作者:
R. Hershey
影响因子:
9.8
作者:
Pacheco, Fernando A. L.
通讯作者:
Pacheco, Fernando A. L.