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苏北盆地东台拗陷重力资料解释,郑源来等苏北盆地东台拗陷的布格重力异常是中生界与上覆地层的界面和中生界与古生界地层界面的叠加结果。所以在利用这些重力资料计算主密度界面的埋藏深度时,不是采用统一的界面密度差,而是按地层沉积状况将本区分成五个区块,使用不同的密度差。首先将第一密度层(中生界以上地层)的密度补成和第二密度层(即中生界地层)相等的
The gravity data of Dongtai depression in Northern Jiangsu Basin explain that the Bouguer gravity anomalies such as Zhengyuanlai in the Dongtai depression of the Subei Basin are the superposition results of the Mesozoic and overlying strata interfaces and Mesozoic and Paleozoic strata interfaces. Therefore, when calculating the burial depth of the main density interface by using these gravity data, instead of using a uniform interface density difference, the area is divided into five blocks according to the deposition of the strata, and different density differences are used. First, the density of the first density layer (above the Mesozoic strata) is made up to be equal to that of the second density layer (ie, Mesozoic strata)