STUDY ON METALLOGENIC PROGNOSIS FOR GOLD POLYMETALLIC DEPOSITS IN HAINAN ISLAND BASED ON EVIDENCE WEIGHTING METHOD

WU Chuan-jun; XU De-ru; GUO Tao; ZHOU Ying-chun; HOU Mao-zhou; ZHOU Yue-qiang

Volume 20 Issue 1

Mar. 2014

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WU Chuan-jun, XU De-ru, GUO Tao, et al., 2014. STUDY ON METALLOGENIC PROGNOSIS FOR GOLD POLYMETALLIC DEPOSITS IN HAINAN ISLAND BASED ON EVIDENCE WEIGHTING METHOD. Journal of Geomechanics, 20 (1): 1-15.

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STUDY ON METALLOGENIC PROGNOSIS FOR GOLD POLYMETALLIC DEPOSITS IN HAINAN ISLAND BASED ON EVIDENCE WEIGHTING METHOD

WU Chuan-jun^{1, 2
,},
XU De-ru^{1
,
,},
GUO Tao³,
ZHOU Ying-chun⁴,
HOU Mao-zhou^{1, 2},
ZHOU Yue-qiang^{1, 2}

1.
Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, CAS, Guangzhou 510640, China
2.
College of Earth Science, University of Chinese Academy of Sciences, Beijing 100049, China
3.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
4.
Hainan Geological Survey Institute, Haikou 570206, China

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Received: 2013-09-28
Published: 2014-03-01

Abstract

Abstract

Based on systematical analysis of regional metallogenic regularity of gold polymetallic deposits in Hainan Island, multivariate favorable geological evidences such as strata, structure, magmatic rock, aeromagnetic, geochemical exploration, and remote sensing data were analyzed and extracted. With the help of MRAS, the authors established an evidence weight prediction model for gold polymetallic deposits in this area. The study area was divided into 2 km×2 km grid units at first and then the posterior probability of every grid unit was calculated. According to the magnitude of evidence weight and the distribution characteristics of mineral resources, the study area was classified into 3 A-level prospective targets, 4 B-level prospective targets and 24 C-level prospective targets. Research results showed that about 90% deposits were located in metallogenic prospective area showing a good prediction effect, which provided an important scientific basis for prospecting work in this region.
- evidence weighting method,
- metallogenic prognosis,
- gold polymetallic deposit,
- Hainan Island

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References(34)

References

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