茅山东侧断裂现代运动的地貌学特征

Geomorphic Feature of Modern Dynamic Fault In the East Side of Maoshan Mt.

茅山东侧断裂现代运动的地貌学特征胡连英，徐学思江苏省地震局，南京，２１０００４江苏省地矿局，南京，２１００１８孙寿成江苏省地震局，南京，２１００１４关键词：茅东断裂，现代运动，地貌特征，江苏茅山ＧｅｏｍｏｒｐｈｉｃＦｅａｔｕｒｅｏｆＭｏｄｅｒｎＤｙｎ...

The determination of geomorphic feature and landscape assemblage plays more and more important role in the research of modern dynamic feature of fault and the evaluation of seismic safety. As we know,the faulting with different Property usually results in specific tectonic geomorphic feature and landscape assemblage whick are very important for the determination of fault property. For instance,the strick-slip fault usually create linear vally. fault offset, lock ridge.rift pond.comprcssed ridge.fault terrace,fault cliff etc.But as to the tectonic geomorphic feature and landscape assemblage of dip-slip fault,up to now.there is few report. The paper considcrs that the tectonic geomorphic feature and SL value of gully of fault give important information on fault movement and step classification.The paper finds many geomorphic types such as gully offset,local open swale,bog or pond,fracture point and tectonic nodules in the bed of gully.Their assemhlage indicates the dynamic-characteristics of East Maoshan fault of laevorotation strike-slip, with overtbrust.The SL value k appears clearly step-down . but normally lower than that of strong seismic area. Therefore the area is quite safe area for earthquake.