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The Geochemistry of Mafic Intrusives at Guixi Gold Deposits, SW China
Author(s) -
LIU Xijun,
Lin Guo,
SHI Yu,
HUANG Wenlong,
LIAO Shuai
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 - 10.1111/1755-6724.12371_12
Subject(s) - china , mafic , geology , geochemistry , mining engineering , archaeology , geography
The South China tectonic block (SCB) is bounded to the north by the Qinling-Dabie orogenic belt, and to the west and southwest by the Tibetan and Indochina blocks. The late Paleozoic layered mafic rocks (diabase and basalt) the SCB are cropped out in the southwest region (western Guangxi province) of the block, also called as Guixi, a special transitional zone where influenced by the eastern Paleo-Tethyan tectonic regime in the early Paleozoic to being influenced by the paleo-Pacific tectonic regime in the late Mesozoic. Meantime, the Guixi also roughly located at the outer zone of Ermeishan Large Igneous Province (LIP)( Fan et al., 2008). Specially, economically significant gold mineralizations in Guixi are genetically associated with mafic intrusives. However, the causes of magmatism and related gold deposit tectonic background in Guixi during the late Paleozoic to early Mesozoic are strongly contested. Two drivers have proposed: influenced by the Paleo-Tethyan oceanic plate subduction or Emeishan mantle plume. This paper present the new major and trace element data of Guixi ore-bearing and barren mafic rocks with previous published data, detailed discuss the geochemical characteristics of the bulk of mafic rocks and their petrogenesis. LIU Xijun, Guo Lin, SHI Yu, HUANG Wenlong, LIAO Shuai, 2014. The Geochemistry of Mafic Intrusives at Guixi gold Deposits, SW China. Acta Geologica Sinica (English Edition), 88(supp. 2): 298-299.