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文内采用硼含量计算古盐度方法,由于引用了成岩系数改善了考奇(E.L.Couch)计算式,提高了计算的准确度,其计算式如下:logSp=(log b_(in)-1.375)/(0.49) 据上式对东营凹陷早第三纪湖水的古盐度作了计算。纯化镇组早期古盐度大于40％,晚期的古盐度则21～40％,沙三段沉积时则降低小于5％,沙二段晚期至沙一段早期又升高大于10％;而沙一段沉积时古盐度又降至5％以下。这种高低的变化也反映到古生物化石方面。
In this paper, the ancient salinity method is used to calculate the boron content. Since the reference of the diagenesis coefficient improves the calculation formula of ELCouch and improves the calculation accuracy, the calculation formula is as follows: logSp = (log b_ (in) -1.375) /(0.49) Based on the above formula, the paleo-salinity of the Early Tertiary lake in Dongying depression was calculated. The ancient salinity of the purification group was more than 40% in the early stage, 21-40% in the late stage, and less than 5% in the sediment of the third member. The sediment of the second member increased to more than 10% For a period of sedimentation ancient salinity dropped to 5% or less. This level of change is also reflected in paleontology fossils.