地质学报2012，Vol.86Issue(6)：940-947,8.
长江中下游金属矿集区近地表速度结构层析成像实验及应用
Tomography Imaging of Near-Surface Velocity Structure Experiment and Its Application in the Ore Concentrate Area of the Lower and Middle Yangtze River
摘要
Abstract
Four cross-deep seismic reflection profiles at the Luzhong iron-polymetallic deposits in the Lower and Middle Yangtze Reaches were performed by the Chinese Academy of Geological Sicences (CAGS) before the Chinese New Year of 2007. The near-surface (~ 1000m) velocity model for the Luzhong volcanoic rock basin was established for the first time using the first break-arrivals of these long-offset shot records and tomography method. The various fine imaging results show the height and undulated shape of blind syenite, discovering there is corresponding relation between positions of top interface and change of the syenite, and distribution of ore bodies, with Luohe, Xiaoling, Longqiao, and Mabianshan iron deposits all situating at the salient sections in high-speed top interface. The Luohe fault presents an obvious horizontal velocity transformation interface in line IzO6-I and line lzO6-3. The research results indicate that the long-offset first arrival travel-time tomography method can provide abundant crustal shallow structure information (0~1000m) for the study of prospect for the deep concealed deposits and the potential prospecting direction for iron-polymetallic deposits in the Luzhong area, Anhui province.关键词
矿集区/庐枞/深地震反射/层析成像/速度结构Key words
ore concentrate area/ Lu-zhong/ deep seismic reflections tomographic imagine/ velocity structure引用本文复制引用
侯贺晟,高锐,卢占武,马立成,徐康..长江中下游金属矿集区近地表速度结构层析成像实验及应用[J].地质学报,2012,86(6):940-947,8.基金项目
本文为国家专项深部探测技术实验与集成项目(编号SinoProbe-02)、财政部科技项目(编号104102)、中国地质科学院地质所基本科研业务费(编号J0916)、国家自然科学基金项目(编号41104060)共同资助的成果. （编号SinoProbe-02）
