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THE STRUCTURAL FRAMEWORK OF THE EASTERN SECTION OF THE JIANGNAN OROGEN

CHENG Guang-hua, WANG Ying-geng (No. 332 Geological Party of Anhui Bureau of Geology and Mineral Resources, Huangshan 245000, China)  
The Jiangnan orogen is a product of muhiperiodic activity of the Yangtze and South China Plates from the mid-Proteroznic. Its main body formed in the Jinning period and eastern section of subtetonic units is composed of the Jiuling passive land margin(Ⅲ), the Zhanggongshan back-arc basin(Ⅱ) and the Huaiyu volcanic land arc(Ⅰ) from north to south. The units were spliced together with the Yifeng-Fuquan and foe Gandongbei ophiolite melange belts, and lately displaced into three parts by the left-handed strike-slip Fault Gandongbei, along which the significant magmatic belts and copper, gold. silver, lead and zinc metallogenic belts formed.
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