【摘要】 本文叙述了冀中地区深井热水中CO₂、HCO₃及其碳同位素分布特征。并根据其δ¹³C值分析了地下水中溶解无机碳化合物的来源,结果表明,冀中拗陷内基岩地下水溶解无机碳主要来自碳酸盐的变质作用,其次来自土壤和大气CO₂随地下水的渗入;而沧县隆起的济1井,黄骅拗陷内的孔20和徐7井除上述来源外,还有生物化学作用产生的CO₂。冀中拗陷变质生成的无机碳化合物,可能是映震的灵敏组分,在地震地球化学监测中可优先选择。更多还原

【Abstract】 The distribution characteristics of CO2, HCO3 and their carbonisotope in the hot water of the deep well in central Hebei area have been presented. Therefore, the sources of the inor-ganic carbon chemicals dissolved in the ground water has been analyzed by their δ¹³C value.The results have shown that the dissolved inorganic carbon in the ground water in the base rock in central Hebei depression are mainly from metamorphic action of the carbonate, sec-ondly from imbibing of CO2 in the soil and the air following the ground water. Otherwise,No.20 well in Huanghua depression in Changxian rise and XU No.7 well have, except above sources, CO₂ causing from bio-chemical action. The inorganic carbon chemicals from meta-morphic action in central Hebei is possibly sensitive factor for earthquake precursor and pri-ority to the selection in the geochemical surveilance.更多还原