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重庆巫溪县的宁厂盐泉历史上曾长期用来生产食盐,是川东地区盐文化的策源地。本文对其出露特点、水化学特征和形成进行调查、分析和总结。结果表明,宁厂盐泉出露于四川盆地东部边沿的中三叠统雷口坡组碳酸盐岩中,总溶解性固体(TDS)为53.102g/L,pH值7.78,离子组分以Cl~-和Na~+占优势,F~-、Br~-和锶含量较高,水化学类型为Cl-Na型,氢氧稳定同位素资料表明是大气水起源的溶滤水。泉眼高于附近河水位约8m,是大气降水入渗山区碳酸盐岩后逐渐向着河谷汇集流出地表形成的。地下水在地下径流的位置高于泉眼,属于浅循环泉。宁厂盐泉是总溶解性固体低的大气降水入渗后溶滤碳酸盐岩中的可溶盐类导致地下水具有较高的总溶解性固体的泉水,属于溶盐卤水。其所排泄的地下水对碳酸盐岩含盐地层的溶滤作用进行得还不是十分强烈,致使泉水至今还具有较高的总溶解性固体。
Ningcun Salt Lake in Wuxi County, Chongqing history has long been used to produce salt for a long time, is the source of salt culture in eastern Sichuan. This paper investigates, analyzes and summarizes the characteristics of its outcrops, hydrochemical characteristics and formation. The results show that Ningchang Salt Spring was exposed in the carbonate reservoirs of the Middle Triassic Leikoupo Formation on the eastern margin of the Sichuan Basin. The total dissolved solids (TDS) was 53.102g / L, pH value was 7.78. Cl ~ - and Na ~ + are dominant, F ~ -, Br ~ - and strontium are higher, and the hydrochemistry type is Cl-Na. Hydrogen and oxygen stable isotope data indicate that it is a source of dissolved water for atmospheric water. The spring is about 8m above the water level of the nearby river, which is formed by the infiltration of atmospheric carbonate precipitation in the mountainous area into the river valley. Groundwater in the underground runoff position higher than the spring, a shallow spring circulation. Ningchang salt spring is the total dissolved solids low atmospheric precipitation after infiltration infiltration of soluble salts in carbonate rocks lead to groundwater has a higher total dissolved solids of spring water, is a salt brine. The excretion of groundwater on the carbonate salt formation leaching is not carried out very strongly, resulting in spring water still has a higher total dissolved solids.