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dc.contributor.authorLi, X.
dc.contributor.authorLi, W.
dc.contributor.authorLi, Zheng-Xiang
dc.identifier.citationLi, XianHua and Li, WuXian and Li, Zheng-Xiang. 2007. On the genetic classification and tectonic implications of the Early Yanshanian granitoids in the Nanling Range, South China. Chinese Science Bulletin 52 (14): 1873-1885.

Early Yanshanian (Jurassic) granitoids are widespread in the Nanling Range of South China, and are associated with numerous non-ferrous and rare metal mineral deposits. These granitoids consist mainly of slightly peraluminous biotite monzogranites and K-feldspar granites that are closely associated in time and space with subordinate amphibole-bearing granites and muscovite- and garnet-bearing granites. In most previous studies, the biotite-bearing granites were classified as crustal transformation-type (corresponding to the S-type) granites which were interpreted to be derived from the regional Paleoproterozoic meta-sedimentary rocks. In this paper, we re-analyze the geochemical characteristics of a number of representative Early Yanshanian Nanling granitoids. There exists a clear negative correlation between SiO2 and P2O5 for the studied granitoids. The Early Yanshanian Nanling granitoid suites (including amphibole-bearing granodiorites->biotite monzogranites->K-feldspar granites->two-mica (muscovite) granites) are metaluminous to slightly peraluminous I-type or fractionated I-type granites. They were derived predominantly from Proterozoic igneous protoliths. The juvenile crust and/or newly mantle-derived materials might also have been involved in some of these granites. In addition, the I- and fractionated I-type granites are closely associated in time and space with minor amount of A-type felsic and mafic volcanic and intrusive rocks as well as alkaline rocks. All these rocks constitute a typical assemblage of anorogenic, intraplate magmatism, suggesting a dominant lithospheric extensional regime for the Nanling Range and neighboring region during the Early Yansanian period.

dc.publisherScience in China Press/Zhongguo Kexue Zazhishe
dc.subjectEarly Yanshanian
dc.subjectgenetic classification
dc.subjectlithosphere extension
dc.subjectNanling Range
dc.subjectSouth China
dc.titleOn the genetic classification and tectonic implications of the Early Yanshanian granitoids in the Nanling Range, South China
dc.typeJournal Article
dcterms.source.titleChinese Science Bulletin

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curtin.accessStatusOpen access
curtin.facultyDepartment of Applied Geology
curtin.facultyDivision of Resources and Environment

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