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Helium and Argon Isotopic Compositions of Hydrothermal Sulfides from Southwest Indian Ridge and Their Geological Inferences
Author(s) -
WANG Yan,
SUN Xiaoming,
WU Zhongwei,
DENG Xiguang
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 - 10.1111/1755-6724.12369_32
Subject(s) - china , chinese academy of sciences , geological survey , ridge , library science , geography , archaeology , geology , cartography , geophysics , computer science
a type of mineral resources, distributed in a variety of tectonic settings on the ocean floor. These hydrothermal fields are rich in metallic elements, such as Cu, Zn, Fe, Au and Ag and almost similar to VMS deposits on land (Herzig and Hannington, 1995). Among them, hydrothermal fields in the Southwest Indian Ridge (SWIR) are characterized by ultraslow-spreading speed background, while little attention has been paid to their source of metallogenic material and fluid. For these issues, we can apply isotope systems to provide more metallogenic information. Thereinto, He-Ar isotope can remain unchanged in water-rock reaction, and at the same time isotopic compositions vary in different sources of fluid. So we can trace the origin of ore-forming fluid and evolutionary process by He-Ar isotope.