Accumulation pattern of groundwater containing Hydrogen Sulfide in the southern Junggar basin in China

The surface water and groundwater flows from south to north to the interior basin in the midst of southern Junggar basin in China. The thick and loose gravel sand layer accumulates in the region, Tectonic depressions of echelon are arranged. Tectonic depression or basement uplift, under the control of hydrodynamic block gas, provides a large space for the occurrence and migration of groundwater (Hydrogen Sulfide). The water is rich in sulfate and chloride. Runoff, dissolution, and leaching may occur in the infiltration and runoff process, and under intense evaporation. The water with high salinity may form HCO3-Ca-Na, HCO3-SO4-Na-Ca, Cl.SO4-Na, and HCO3-SO4-Cl-Na-K. The water rich in SO42-, Cl-, Ca2+, Mg2+ and Na+ through the hydrocarcon-rich zone (Sigma CH, C), plays a role in geothermal warming. Under suitable geological conditions BSR or TSR may ocurr, and H2S can be generated, resulting in a significantly lower concentration of calcium and higher concentration of hydrogen sulfide in the water.