基于5P成矿预测与定量评价的系统勘查理论与实践

孙华山; 赵鹏大; 张寿庭; 夏庆霖

Volume 30 Issue 2

Mar. 2005

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Article Navigation > Earth Science > 2005 > 30(2): 199-205

SUN Hua-shan, ZHAO Peng-da, ZHANG Shou-ting, XIA Qing-lin, 2005. Theory and Practice of Systematic Mineral Exploration Based on 5P Met allogenic Prognosis and Quantitative Assessment. Earth Science, 30(2): 199-205.

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Theory and Practice of Systematic Mineral Exploration Based on 5P Met allogenic Prognosis and Quantitative Assessment

1.
Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, China
2.
Graduate School, China University of Geosciences, Beijing 100083, China

Received Date: 2004-09-16
Publish Date: 2005-03-25

Abstract

Abstract

Research on earth system science has led to the production of computer-based, mathematical systematic exploration. Systematic mineral exploration is a process in which various ore-controlling factors and ore-finding signs are extensively considered, reasonably selected and arranged in order. In addition, the establishment of a mathematical model for systematic exploration meets the need of information development. The 5P met allogenic prognosis system is a better embodiment of systematic exploration. It divides mineral exploration into five different stages, with each obtaining different explored areas. 5P includes: stage 1, probable ore-forming area; stage 2, permissable ore-finding area; stage 3, preferable ore-finding area; stage 4, potential mineral resources; and stage 5, prospective ore body area. Different areas can be delineated through different mathematical models. Based on a full analysis of the previous mathematical models for mineral exploration, this paper points out that the impact of superior ore-controlling factors on subordinate ones is ignored. Thus, the links between the superior and the subordinate are cut off and this violates an integral principle of systematic exploration. In fact, superior ore-controlling factors not only influence the subordinate ones, but also exert influence on the subordinate exploration objects. A formula is presented herein for calculating the weight of the superior over the subordinate, which improves the ore-forming favorability function for delineating different ore-finding areas. A case in Himalayan granitoid rich-alkali porphyry in southern Sanjiang region, northwest Yunnan Province, provides an example for the construction of a systematic exploration model based on the 5P met allogenic prognosis system. A quantitative assessment on the Cu-Mo-Au preferable ore-finding area (the third "P") is conducted. The results show that the consistency between delineating areas and Cu-Mo-Au forming sections is relatively high, indicating the feasibility of the method suggested.

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References(16)

References

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