Research of Metallotectonics and Tectonic Stress Field of Jinqingding Gold Deposit, Shandong Province

Abstract

Abstract:

Jinqingding quartzvein type gold deposit is located in the central area of MupingRushan metallogenic belt. Based on the structural mapping, the analysis of paleotectonic stress inversion and the differential paleostress values, the authors studied the tectonic movement features and tectonic evolution history preliminarily. The new results show that the orecontrolling fault of this deposit has gone through three stages of activity, characterized by leftslip transgression before mineralization, rightslip extension transtension during mineralization and intrusion of lamprophyre, and leftslip transgression after mineralization. During the mineralization, the orecontrolling fault experienced a significant transformation of tectonic stress field, which expanded, and was filled with ore body. According to discussion of the metallogenic evolution mechanism, we regard that mineralization is restricted by many aspects, such as the directions of tectonic stress field, fault movement direction, fracture surface properties and so on, which results from coupling of multiple structure elements.

Key words: tectonic deformation, tectonic stress field, quartzvein type gold deposit; , Jinqingding gold deposit, Rushan, Shandong Province

GAO Jian-Wei, DIAO Guo-Chun, MAO Xiao-Gong, TENG Chao, DONG Han-Wen, LI Qing-Rong, SONG Yu-Bei, LIU Zhen-Hao. Research of Metallotectonics and Tectonic Stress Field of Jinqingding Gold Deposit, Shandong Province[J]. Geoscience, 2011, 25(6): 1099-1107.

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