[1]LIU Yongmei,CUI Yueju,SUN Fengxia,et al.Hydrochemical Types and the Genesis of the Ground Water in the Border Area of Inner Mongolia and Liaoning Province[J].Journal of Seismological Research,2023,46(01):58-67.[doi:10.20015/j.cnki.ISSN1000-0666.2023.0007
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Hydrochemical Types and the Genesis of the Ground Water in the Border Area of Inner Mongolia and Liaoning Province
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
46
Number of periods:
2023 01
Page number:
58-67
Column:
地震地下流体监测预报理论及技术应用专栏
Public date:
2023-01-01
- Title:
- Hydrochemical Types and the Genesis of the Ground Water in the Border Area of Inner Mongolia and Liaoning Province
- Keywords:
- ground water; hydrogen and oxygen isotope; hydrochemical types; supply source; the border area between Inner Mongolia and Liaoning Province
- CLC:
- P315.723
- DOI:
- 10.20015/j.cnki.ISSN1000-0666.2023.0007
- Abstract:
- The hydrochemical types and origins of the underground water collected from 25 hot springs(wells)at the main active fault zones in the border area between Inner Mongolia and Liaoning Province were discussed based on the isotope ratios of hydrogen and oxygen as well as ion concentrations.The results show that:①Values of δD and δ18O range from -106.7‰ to -57.3‰ and -15.6‰ to -7.5‰,respectively,which indicate the waters have a meteoric origin.The TDS values of water samples range from 40.14 mg/L to 1 720.87 mg/L.The ions of the water samples with low salinity(TDS<200 mg/L)mainly come from rock dissolution and atmospheric input,while the ions of other water samples mainly come from rock dissolution and deep fluid.The atmospheric input is relatively small,but the contribution of deep fluid at each survey point is significantly different; ②The low-temperature,medium-temperature and high-temperature water is all granite fissure water,and their hydrochemical types are sulfuric acid type and bicarbonate type.The dissolution of alkali-feldspar in igneous rocks leads to the enrichment of Na+ in groundwater,and the surrounding tectonic activities are relatively active.Among them,the RST water sample is closer to the hot water characteristics of deep water storage layer,indicating that the water sample is mainly affected by deep fluid; ③The NS well and AES water samples from the northern plateau area of the Yinshan Mountain are CO2 supersaturated water,and the soda water is Na?Ca?Mg-HCO3 and Na?Mg-HCO3.AES water samples have the highest salinity due to the leaching of surface soluble salts by seasonal precipitation in arid areas,which can be attributed to meteoric water leaching soluble salts and mixture with the CO2-enriched,deep fluids.④The KZHQ and BYNE observation well are located in carbonate rock aquifer and gravel sandstone aquifer respectively.Because Ca2+ participates in mineral precipitation,Na+ is relatively enriched in the water,forming sodium-bicarbonate-type water.The chemical composition of groundwater is greatly affected by deep fluids in the seismically active region.
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Last Update:
2023-01-01