A comparative study of the characteristics of tectonic deformation lithofacies belts in different ore blocks of the Linglong gold orefield in Jiaodong and the deep ore-prospecting prognosis

ZHANG Baolin; LÜ Guxian; YU Jianguo; WANG Cuizhi; JIA Wenchen

2020 Vol. 39, No. 11

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ZHANG Baolin, LÜ Guxian, YU Jianguo, WANG Cuizhi, JIA Wenchen. A comparative study of the characteristics of tectonic deformation lithofacies belts in different ore blocks of the Linglong gold orefield in Jiaodong and the deep ore-prospecting prognosis[J]. Geological Bulletin of China, 2020, 39(11): 1681-1691.

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ZHANG Baolin, LÜ Guxian, YU Jianguo, WANG Cuizhi, JIA Wenchen. A comparative study of the characteristics of tectonic deformation lithofacies belts in different ore blocks of the Linglong gold orefield in Jiaodong and the deep ore-prospecting prognosis[J]. Geological Bulletin of China, 2020, 39(11): 1681-1691.

A comparative study of the characteristics of tectonic deformation lithofacies belts in different ore blocks of the Linglong gold orefield in Jiaodong and the deep ore-prospecting prognosis

1.
Key Laboratory of Mineral Resources, Institute of Geology and Geophysics/Chinese Academy of Sciences, Beijing 100029, China
2.
Institutions of Earth Science, Chinese Academy of Sciences, Beijing 100029, China
3.
University of Chinese Academy of Sciences, Beijing 100049, China
4.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
5.
Zijin Mining School of Fuzhou University, Fuzhou 350108, Fujian, China
6.
Beijing Technology Consulting Branch, China Railway Resources Group Co., Ltd., Beijing 100070, China

More Information

Corresponding author: LÜ Guxian, lvguxian@126.com

Received Date: 10 February 2020

Revised Date: 28 May 2020

Publish Date: 25 November 2020

Abstract

Abstract

Large-scale exploration results show that there are the second enrichment zones in the deep part of the main gold orefields in Jiaodong, indicating great potential for deep exploration. What factors control the "deep second enrichment zone"? What are the goals of deep prediction? Where is the metallogenic boundary? These key questions deserve further study. In this paper, combined with the tectonic system of "uplift and depression detachment of magmatic core complex" and the ore-controlling model of "米-type" structure, it is proposed to take "tectonic deformation lithofacies belt" as the prediction target and ore-forming boundary of deep ore-prospecting and establish a new prediction indicator of deep ore-prospecting. Taking the Linglong gold orefield as an example, the authors conducted the comprehensive comparison of the spatial distribution, material composition, structure characteristics, formation time, diagenetic mineralization depth of tectonic deformation facies belts in three main directions (NEE, NE, NNE) in different blocks of the orefield, with the summary of deep mineralization enrichment regularity and its variation trend. The spatial-temporal evolution relations of tectonic deformation facies belts in different directions were discussed. From the development degree of the "deep second enrichment zone", it can be seen that these known tectonic deformation lithofacies belts have ore-prospecting potential in the deep part, and there may be parallel and deeper tectonic deformation lithofacies belts in the periphery.
- Jiaodong gold deposit /
- Linglong gold orefield /
- tectonic deformation lithofacies belt /
- deep predicted target /
- metallogenic boundary /
- prospecting potential

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