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以松辽盆地地质资料为基础,介绍了应力场和张裂缝预测的计算方法。通过了各种岩性的张破裂概率隶属函数,预测松辽盆地西部张裂缝区的分布。据此,为今后的油气勘探提出了几点认识和建议。 相似文献
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朱而勤 《中国科学B辑(英文版)》1983,(10)
The article makes a research of the calcareous concretions in the surface sediments of the northern East China Sea. Based on the isotopic composition of carbon and oxygen, chemical composition, radiometric dating and distribution pattern of the concretions, we infer that they are chiefly formed in the area of the fossil delta of the Changjiang River under a fresh water environment. Therefore, the calcareous concretion can act as a facies indicator, showing that the sea bottom of the area once exposed above the sea water. 相似文献
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