The major ion, 87Sr/86Sr, and δ11B geochemistry of groundwater in the Wyodak-Anderson coal bed aquifer (Powder River Basin, Wyoming, USA)

被引：14

作者：

Lemarchand, Damien ^{[1
]}

Jacobson, Andrew D. ^{[2
]}

Cividini, Damien ^{[1
]}

Chabaux, Francois ^{[1
]}

机构：

[1] Univ Strasbourg, CNRS, EOST, Lab Hydrol & Geochim Strasbourg, 1 Rue Blessig, F-67000 Strasbourg, France

[2] Northwestern Univ, Inst Technol, Dept Earth & Planetary Sci, Evanston, IL 60208 USA

来源：

COMPTES RENDUS GEOSCIENCE | 2015年 / 347卷 / 7-8期

关键词：

Powder River; Boron isotopes; Strontium isotopes; 1D reactive transport; Modeling; ISOTOPIC FRACTIONATION; BORON SORPTION; WATERS; SOILS; EVAPORATION; STRENGBACH; EVOLUTION; BEHAVIOR; TRACERS; SYSTEMS;

D O I：

10.1016/j.crte.2015.05.007

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We developed a multicomponent, 1D advective transport model that describes the downgradient evolution of solute concentrations, Sr-87/Sr-86 ratios, and delta B-11 values in the Wyodak-Anderson Coal Bed (WACB) aquifer located in the Powder River Basin, Wyoming, USA. The purpose of the study was to evaluate the chemical vulnerability of groundwater to potential environmental change stemming from the extraction of coal bed methane and shale gas. Model calculations demonstrate that coupling between microbial activity and the dissolved carbonate system controls major ion transport in the WACB aquifer. The analysis of Sr-87/Sr-86 ratios further reveals the importance of ion-exchange reactions. Similarly, delta B-11 data emphasize the significance of pH-dependent surface reactions and demonstrate the vulnerability of the aquifer to the long-term acidification of recharge water. (C) 2015 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.

引用

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页码：348 / 357

页数：10

共 24 条

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