苏鲁皖地区现代构造活动性研究
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摘要
苏豫皖地区1956—1999年水准复测资料结果表明:胶东地块、苏北地块、泰沂蒙地块和淮河地块的现代构造活动主要以掀斜为主,有的地块在某些时间段以拗陷为主。4个地块中,1956—1978年胶东地块活动性较强,与同时期郯庐断裂带北延地段的渤海Ms7.4地震孕育发生有关;1978—1985年和1990—1995年苏北地块活动性较强,分别与苏北地块东部南黄海Ms6.2和Ms6.1地震有关。
The results of multi-phase relevelling data obtained from 1956 to 1999 suggest that the current tectonic activities of the Jiaodong,Subei,Taishan-Yishan-Mengshan and Huaihe blocks are characterized by tilting and some of them predominate in depression state in certain periods.Among the 4 blocks,the Jiaodong block was distinctively active in the period of 1956-1978,which was related to the development and occurrence of Bohai Ms7.4 earthquake in the northword extending segment of the Tanlu fault zone.The Subei block was rather active in the periods of 1978-1985 and 1990-1995,which was associated with the development and occurrence of the Ms6.2 and Ms6.1 South Huanghai earthquakes in the eastern part of the Subei block.
The results of multi-phase relevelling data obtained from 1956 to 1999 suggest that the current tectonic activities of the Jiaodong,Subei,Taishan-Yishan-Mengshan and Huaihe blocks are characterized by tilting and some of them predominate in depression state in certain periods.Among the 4 blocks,the Jiaodong block was distinctively active in the period of 1956-1978,which was related to the development and occurrence of Bohai Ms7.4 earthquake in the northword extending segment of the Tanlu fault zone.The Subei block was rather active in the periods of 1978-1985 and 1990-1995,which was associated with the development and occurrence of the Ms6.2 and Ms6.1 South Huanghai earthquakes in the eastern part of the Subei block.
引文
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