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U‐Pb Zircon, Geochemical and Hf Isotopic Constraints on Age and Origin of Early Yanshanian Granites and Their Enclaves from Xitian, Hunan Province
Author(s) -
LIU Qing,
SUN Jinfeng,
HOU Quanlin,
WU Shichong,
NIU Rui,
HE Miao,
LI Gaohong
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 - 10.1111/1755-6724.12385_22
Subject(s) - beijing , geodynamics , china , chinese academy of sciences , key (lock) , zircon , geology , earth science , library science , geography , geochemistry , archaeology , seismology , computer science , computer security , tectonics
Granites are one of the most common rocks in the continental crust. Although they consist predominantly of quartz and feldspar, with little or no mafic minerals, their formation and evolution have been long debated. The early Yanshanian granites, in South China occurred over a wide region of ~1000 km long and ~600 km wide, with a total exposed area exceeding 64000 km (Sun et al.,2006; Zhou et al.,2006;Li et al.,2009). Some early Yanshanian granites are associated closely with economically significant raremetal deposits (W, Sn, Nb, Ta) (Zhao et al., 2002; Hua et al., 2003; Tao et al., 2013). The genesis of these granites, particularly the relationship between crystal fractionation and ore formation in the evolution of granitic magmas, have been attracting great attention. We carried out in this study chronological, geochemical, and zircon Hf isotopic investigations on the early Yanshanian Xitian granite complex in the Hunan Province, South China.