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Zircon U‐Pb age and geochemical characteristics of granodiorites from the western Qilian block
Author(s) -
OUYANG Huizi,
LI Zhiwu,
ZHU Lidong,
YANG Wenguang,
TAO Gang
Publication year - 2017
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 - 10.1111/1755-6724.13199
Subject(s) - zircon , geochemistry , geology , block (permutation group theory) , petrology , mathematics , geometry
Qilian Block is located in between the South China Craton and the North China Craton and the Tarim Craton (Fig. 1a), which is one of the key area to study the tectonic evolution of China. The Phanerozoic tectonic framework of Qilian Block has become increasingly clear, however, the understanding about the Precambrian tectonic framework has still a great deal of controversy (Wan et al., 2003; Gehrels et al., 2003; Tung et al., 2007; Song et al., 2012; Tung et al., 2012; Tung et al., 2013; Yu et al., 2013). The Liuhuangkuang granodiorite is located in the western Qilian block, and intrudes into Qingbaikouan weakly Metamorphic terrigenous clastic rocks and carbonate rocks (Fig. 1b). For a long time, due to the lack of accurate chronological data constraints, its age have different understanding, such as some researchers thought it was the product of the late Paleozoic magmatism (BGMRGP, 1972), but others believe that its age was Precambrian (BGMRQP, 1991). Therefore, a detailed research on geochronology and geochemistry has important significance for constraining the tectonic setting and petrogenesis of the granodiorites.