孝泉—丰谷构造带须家河组地层水成因分析

孝泉—丰谷构造带须家河组247个水样分析化验测试数据表明，须二、须四地层水垂向分异不明显，具盐水—卤水特点，水型为CaCl2。95.2%的地层水化学组分为Cl－、Na+、Ca2+，Cl－和Na+与TDS相关关系明显。除Mg2+、SO2-4外，主要阴阳离子含量均大大超过海水，地层水为典型的深度变质作用的沉积水，其形成是经浓缩盐化、正向变质作用的结果。同沉积地层水研究表明，须二为海相砂泥岩互层沉积盐水，须四为海陆混合水。NaCl和CaCl2是地层水体的主要组成形式，地层水整体表现为Na+相对海水亏损，而Ca2+相对海水富集，方解石化作用明显，盐岩溶解和海水—盐岩蒸发作用较弱。斜长石、钠长石化是最主要的水－岩相互作用方式，Na+和Ca2+离子遵守2∶ 1交换原则。研究区脱硫酸作用不明显。

ON DEVELOPMENT OF CIVIL SOCIETY IN CHINA AND ITS CONSTRUCTION WITH CHINESE CHARACTERISTICS

Vertical variation of formation water is not obvious，with brine characteristics of water type for the CaCl2，based on the 247 analysis samples of XiaoquanFenggu structural belt.95.2% strata water chemical is Cl-，Na+，Ca2+，Cl- and Na+ have strong relationship with the TDS.The main ions in content is much higher than sea water except Mg2+and SO2-4.The formation water is a typical hypometamorphism sedimentary water，and its formation is the result of concentrated salinity，a positive metamorphose.Studies show that the syndepositional formation water of the second member is seawater，and the fourth member is mixed water.NaCl and CaCl2 are the main presentation forms.Na+ deficit and abundant Ca2+relatively to the seawater is the basic feature，calcitization is obvious，and halite dissolution and evaporation is weak.The best explanation for this relationship is that albitzation of plagioclase controls the Na and Ca abundances.Rock water interaction indicates a net cation exchange rations of 2 Na+ for 1 Ca2+.In the study area desulfated elimination is not obvious.