Regional characteristics of groundwater sulfate source and evolution in the multi-layer aquifer system of the northern Shaanxi coal mine base, northwestern China: Evidence from geochemical and isotopic fingerprints

• Shen QuInner Mongolia University
• Chenyu WangChina University of Geosciences
• Xiangyang LiangCCTEG Xi'an Research Institute (China)
• Ankun LuoChina University of Geosciences (Beijing)
• Zheming ShiChina University of Geosciences
• Guangcai WangChina University of Geosciences
• Ruihong YuInner Mongolia University