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Three-Dimensional P-wave Velocity Structure of the Zhuxi Ore Deposit, South China Revealed by Control-Source First-Arrival Tomography
- Source :
- Minerals, Volume 10, Issue 2, Minerals, Vol 10, Iss 2, p 148 (2020)
- Publication Year :
- 2020
- Publisher :
- MDPI AG, 2020.
-
Abstract
- The Zhuxi ore deposit, located in Jiangxi province, South China, is the largest tungsten reserve in the world. To better understand the geological structure and distribution of orebodies, we conducted a high resolution three-dimensional P-wave velocity tomography of the uppermost 0.5 km beneath the Zhuxi ore deposit and adjacent area. Our velocity model was derived from 761,653 P-wave first arrivals from 998 control-source shots, recorded by a dense array. As the first 3D P-wave velocity structure of the Zhuxi ore deposit, our model agrees with local topographic and tectonic structures and shows depth-dependent velocity similar to laboratory measurements. The Carboniferous formations hosting the proven orebodies are imaged as high velocities. The high-velocity anomalies extend to a larger area beyond the proven orebodies, and the locations of high&ndash<br />low velocity boundaries are in accordance with the boundaries between the Neoproterozoic formation and the Carboniferous&ndash<br />Triassic formation. Seismic tomography reveals that high-velocity anomalies are closely related to the mineralized areas. Our results are helpful for further evaluating the total reserves and suggest that seismic tomography can be a useful tool for mineral exploration.
- Subjects :
- Dense array
lcsh:Mineralogy
lcsh:QE351-399.2
South china
010504 meteorology & atmospheric sciences
P wave
Geochemistry
Geology
Zhuxi ore deposit
010502 geochemistry & geophysics
Geotechnical Engineering and Engineering Geology
01 natural sciences
body wave tomography
Mineral exploration
Tectonics
control source
Seismic tomography
Carboniferous
Tomography
dense array
0105 earth and related environmental sciences
Subjects
Details
- ISSN :
- 2075163X
- Volume :
- 10
- Database :
- OpenAIRE
- Journal :
- Minerals
- Accession number :
- edsair.doi.dedup.....bba07eeed3f14b8f12eb6a047b10da37