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Isotope Geochemistry of Granitoids in South China and Their Metallogeny
Author(s) -
HONG Dawei,
XIE Xilin,
ZHANG Jisheng
Publication year - 1998
Publication title -
resource geology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.597
H-Index - 43
eISSN - 1751-3928
pISSN - 1344-1698
DOI - 10.1111/j.1751-3928.1998.tb00022.x
Subject(s) - pluton , geology , geochemistry , metallogeny , felsic , mantle (geology) , crust , mineralization (soil science) , proterozoic , partial melting , lithosphere , petrology , mafic , tectonics , paleontology , pyrite , sphalerite , soil water , soil science
Abstract: On the basis of data of initial strontium ratios for over 300 plutons, neodymium isotopes for 240 plutons and oxygen isotopes for more than 200 plutons, the granites of South China are divided into six belts which are different from each other in petrology, geochemistry and mineralization. The similar Nd isotopic composition between the peraluminous granites and Proterozoic crust reveals that there is intermediate to felsic composition crust at mid‐crustal depth throughout the South China interior. The six granitic belts mentioned above belong to different lithospheric plates with different composition basement. Differences in the extent and nature of interaction between mantle and crusts in different geodynamic setting and the different extent of differentiation of magma have all controlled the characteristics of the granites and their related mineralization.