2016, 35(2) 297-308 DOI:     ISSN: 1004-5589 CN: 22-1111/P

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Keywords
Middle Jurassic granites
zircon U- Pb ages
geochemistry
petrogenesis
Xinsheng area
Heihe City
Authors
LI Sen-Lin
CHEN Yue-Jun
LI Yun-Feng
WANG Xiong
LI Yong
WU Guo-Xue
PubMed
Article by Li, S. L.
Article by Chen,Y. J.
Article by Li, Y. F.
Article by Wang, X.
Article by Li, Y.
Article by Wu, G. X.

Zircon U- Pb ages��geochemistry and petrogenesis of Middle Jurassic granite in Xinsheng area of Heihe City

LI Sen-Lin, CHEN Yue-Jun, LI Yun-Feng, WANG Xiong, LI Yong, WU Guo-Xue

1. College of Earth Sciences��Jilin University��Changchun 130061��China; 2. ��esearch Center of Paleontology �� Stratigraphy��Jilin University��Changchun 130026��China

Abstract��

Zircon U- - Pb dating by LA- ICP- MS technique indicates that the monzonitic granitic from the north- ern Xigulan river in Xingsheng area of Heihe were formed in Middle Jurassic (163. 8 ±1) Ma�� These granites be- long to peraluminous high- K calc- alkaline I- type granite series��The rocks were obviously rich in LILE (��b��Ba and Th) and depleted in HFSE (Zr��Hf��Nb and Ta) with pronounced negative Sr anomalies��Their primary mag- mas were derived from partial melting of lower crust�� Combined with the feature of igneous rock associations and tectonic evolution history of paleo- - Pacific Plate��the authors proposed that monzonitic granite anitic from the north- ern Xigulan river in Xingsheng area of Heihe were formed in the active continental margin tectonic setting related to the subduction of paleo- Pacific tectonic plate from the east to the west��

Keywords�� Middle Jurassic granites   zircon U- Pb ages   geochemistry   petrogenesis   Xinsheng area   Heihe City  
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