Institute of Geology, CAGS, Beijing 100037, China;2. Earthprobe and Geodynamics Open Laboratory of CAGS, Beijing 100037, China;3. Data Processing & Interpretation Center, Hua-Dong Petroleum Bureau, SINOPEC , Nanjing 210007, Jiangsu, China;4. Geophysical Exploration Center of CEA, Zhengzhou 450002, Henan, China
The velocity section computed by processing reflection seismic data can provide new image of the structure from the surface to the upper crust in the Luzong (Lujiang-Zongyang) polymetallic ore concentration belt. Studies show that Tanlu fault, Luohe-Quekou fault and Changjiang fault are main faults in this area, showing relatively low velocity characteristics. Tanlu fault is deeper and larger than other faults. Seismic wave velocity becomes faster in volcanic rocks with disorderly reflection, but becomes slower with continuous reflection in Cenozoic sedimentary basement. The Luohe ore district is located in a transfer zone between strong and weak reflection and between high and low velocity.
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