地质学报2011，Vol.85Issue(5)：900-914,15.DOI:CNKI:11-1951/P.20110512.0910.011
基于重磁多尺度边缘检测的长江中下游成矿带构造格架研究
Tectonic Framework Research of the Lower and Middle Yangtze Metallogenic Belt Based on Gravity and Magnetic Multi-scale Edge Detection
摘要
Abstract
The tectonic framework of the Middle and Lower Reaches of the Yangtze River was established based on multi-scale edge detection using regional magnetic and gravimetric data and integrated with analysis of magnetotelluric profiling and geological information. According to gravity and magnetic multi-scale edge detection, the distribution and location of the fault system was redefined, the exact boundary of volcanic basin such as Nanjing-Wuhu and Lujiang-Zongyang , etc were confirmed, and the plate border were also devised. We consider that the extending to the east of the Yangtze fault zone and its continuation pass through Anqing, north of Tongling, Wuhu, Maanshan, Nanjing, Zhenjiang, Nantong and sea waters of eastern the East China Sea. There is less possibility that Tanlu fault zone traverse of Yangtze River because the linear boundary of gravity and magnetism is not found. Considering the relationship between ore-concentrating district and tectonic framework of the Middle and Lower Reach of the Yangtze River, we consider that the deep fracture of Yangtze River is caused by the upwarping of mantle. The metallic oreconcentrating district comprises mineral resources that was migrated upwards along deep faults from lower crust or mantle. The fracture of Yangtze River has been broken at Tongling by the fault of DabieZhoushan. It plays an important role in the formation of Tongling, Luzhong, Ningwu ore districts.关键词
重磁/多尺度边缘检测/长江中下游成矿带/构造格架Key words
gravity and magnetic/ multi-scale edge detection/ tectonic framework引用本文复制引用
严加永,吕庆田,孟贵祥,赵金花,邓震,刘彦..基于重磁多尺度边缘检测的长江中下游成矿带构造格架研究[J].地质学报,2011,85(5):900-914,15.基金项目
本文为国家自然科学基金重点基金项目(编号40930418)和国家科技专项"深部矿产资源立体探测技术与试验"(编号SinoProbe-03)资助的成果. （编号40930418）
