jgg     2012 32 (1):  21-25    ISSN: 0412-1961  CN: 21-1139/TG STUDY OF QUATERNARY ACTIVITY AND TECTONIC DEFORMATIONMECHNISM OF MACHENG-TUANFENG FAULT BELT Lei Dongning 1,2) ；Cai Yongjian 1,2,3) ； Zheng Shuiming 1,2) ； and Li Heng 1,2) 1)Institute of Seismology, China Earthquake Administration, Wuha 430071；2)Institute of Earthquake Engineering of Wuhan,Wuhan 430071；3)Faculty of Earth Science, China University of Geosciences, Wuhan 430074 Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null