论文部分内容阅读
目前对淮安盐盆中生界白垩系石盐沉积物质来源是陆相成因还是海相成因尚存在争议。通过对淮安盐盆东南部石盐矿物中Br~-离子含量及溴氯系数进行研究,结果表明:区内石盐矿物中Br~-离子含量介于3×10~(-6)~42×10~(-6),说明淮安盐盆东南部石盐矿在不同阶段矿物结晶时,卤水中Br~-离子浓度普遍较低,结合区内孢粉组合、化石组合特征,认为具有陆相成因特征;其溴氯系数介于0.008~0.139,其中低于海相成因最初沉积阶段溴氯系数0.11的占90.7%,说明淮安盐盆盐类物质来源主要来自陆相成因的地表岩石风化淋滤或地下深层卤水。
At present, it is controversial whether the sedimentary source of the Cretaceous halite in the Mesozoic Mesozoic in Huai’an Basin is continental or marine origin. The results showed that the contents of Br ~ - ions in the rock salt minerals ranged from 3 × 10 ~ (-6) ~ 42 × 10 ~ (-6), indicating that the salt concentration of Br ~ - in brine is generally low at different stages of mineralization in the salt rock of southeastern Huaiyan salt basins. Combined with the sporopollen assemblage and fossil assemblage in the area, The bromochloramines ranged from 0.008 to 0.139, which was lower than 90.7% of the initial sedimentary stage of the marine facies because of the bromochlorination coefficient of 0.11, indicating that the sources of salt in the Huaiyan salt basin are mainly derived from the weathering leaching or underground Deep brine.