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Characteristics and Genesis of Fine‐Clastic Rock‐Type Au Deposits in the Liaodong Rift
Author(s) -
Dejiang YANG
Publication year - 2000
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/j.1755-6724.2000.tb00025.x
Subject(s) - geology , clastic rock , geochemistry , rift , proterozoic , mineralization (soil science) , hydrothermal circulation , carbonate , rift valley , carbonate rock , geomorphology , paleontology , sedimentary rock , structural basin , tectonics , materials science , soil water , soil science , metallurgy
Gold deposits occurring in the Liaodong rift are located in interlayered carbonate rocks and fine‐clastic rocks, belonging to the middle and upper parts of the lower Proterozoic. Compared with the Carlin‐type Au deposits abroad and gold deposits in Yunnan‐Guizhou‐Guangxi, Qinling and western Sichuan Province, they are similar in many respects. This paper discusses the geological features of ore‐bearing formations and ore‐filling structures and metallogenetic characteristics. Through the discussion on the sources of ores, heat and water, it points out that the Au deposits belong to vadose reworked hydrothermal deposits. This conforms to the principle of “mineralization in the neighbouring areas”, i.e., the deposits are formed in nearby ore‐bearing layers, and the latest hydrothermal event was the main factor in forming the Au deposits.