The Correlation of Liquefied Vein Structures Caused by Earthquake in Different Geological Periods in the Yishu Fault Zone and Its Vicinity
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摘要: 在沂沭断裂带及其近区,已发现震旦纪石旺庄组、寒武纪馒头组、古近纪朱壁店组和沙河街组四个层位发育震积岩,它们均是具有地震液化脉构造和其它地震成因层内构造的震积岩层。通过对比与分析,确认不同地层层位的液化脉构造具有某些共同特征,这反映了不同层位的液化脉构造的成因具同一性。笔者认为将具有地震液化脉构造共同特征的前寒武纪“molar tooth构造”,称作“泥亮晶灰岩液化脉构造”为宜。Abstract: In the Yishu fault zone and its surrounding area, seismites have been discovered in four horizons, i.e. Sinian Shiwangzhuang Formation, Cambrian Mantou Formation, Paleogene Zhubidian Formation and Shahejie Formation. All of Seismites are seismo-depositional layers with the liquefied vein structure and other seismogenesis intra-layer structures. Through some correlation and analysis in many ways, it is confirmed that liquefied vein structures of different horizons possess some alike or common features, which reflects that the origin of liquefied vein structures is identical in different geological periods. It is considered that Precambrian“molar tooth structure” with common features of liquefied vein structures is called “liquefied vein structure of micrite-sparry limestone”best.
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Key words:
- liquefied vein structure /
- feature,seismic genesis /
- Yishu fault zone /
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