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Study on the Metallogenetism of Sub‐mantle Plume and Mantle Branches in the Gold Mineralization Concentration Area of Northwest Jiaodong Peninsula
Author(s) -
NIU Shuyin,
CHENG Guangsuo,
ZHANG Jianzhen,
SUN Aiqun,
MA Baojun,
ZHANG Fuxiang,
WANG Baode,
XU Meng,
WU Jichun,
ZHAO Rongxin,
WANG Shanfei
Publication year - 2014
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12308
Subject(s) - geology , mantle plume , shandong peninsula , mantle (geology) , plume , geochemistry , mineralization (soil science) , hotspot (geology) , peninsula , dike , transition zone , tectonics , geophysics , lithosphere , paleontology , physical geography , history , physics , archaeology , soil water , geography , soil science , thermodynamics
The northwest of Jiaodong peninsula is characterized by its greatest gold concentration area, enormous gold reserves and limited time interval (115±5Ma) of gold mineralization in China. Studies show that the east area of north China began its mantle plume evolution since the Yanshanian movement, and the Laiyang sub‐mantle plume and its surrounding mantle branches such as those in Guojiadian, Aishan and Panshidian were formed in the mineralization concentration area of northwestern Jiaodong peninsula. With the development of mantle plume → sub‐mantle plume → mantle branch → favorable expending structures, the deep‐derived hydrothermal fluid moved up to the favorable places, such as brittle‐ductile or ductile‐brittle shearing zones, the internal and external contact zones of intrusions, dense fracturing zones and the contact zones between dikes and countryrocks, and concentrated into deposits. Then the gold mineralization concentration zones that are centralized on mantle branches were formed. This study takes Guojiadian mantle branch as an example to discuss their metallogenetism and conclude the metallogenetic mode.