气候变化领域集成服务门户(CCPortal): Late Carboniferous mafic to felsic intrusive rocks in the central Great Xing’an Range; NE China: petrogenesis and tectonic implications

CCPortal

DOI	10.1007/s00531-020-01828-6
	Late Carboniferous mafic to felsic intrusive rocks in the central Great Xing’an Range; NE China: petrogenesis and tectonic implications
	Ma Y.-F.; Liu Y.-J.; Wang Y.; Qin T.; Chen H.; Sun W.; Zang Y.
发表日期	2020
ISSN	14373254
起始页码	761
结束页码	783
卷号	109 期号:3
英文摘要	The timing of the amalgamation of the Xing’an and Songliao–Xilinhot blocks in the eastern Central Asian Orogenic Belt has long been the subject of debate. To explore this question, we studied a suite of late Carboniferous mafic to felsic intrusive rocks in the central Great Xing’an Range, NE China. These rocks yielded late Carboniferous zircon U–Pb isotopic ages of 320–300 Ma. The felsic monzogranites and granodiorites are strongly peraluminous with high A/CNK ratios (≥ 1.1), and they have signatures transitional between I- and S-type granites. Their geochemical characteristics suggest a magmatic source in a heterogeneous juvenile crust that included both clay-rich pelitic material and metabasalt. On the other hand, the intermediate biotite granodiorites have characteristics that suggest a dual magmatic source involving both mantle material and crustal contributions. The mafic gabbros were derived from the partial melting of mantle materials including both spinel and garnet lherzolite. The upwelling of the asthenospheric mantle contributed greatly to the formation of these magmas, with the upwelling as a result of the delamination of dense lithosphere and/or previously trapped mafic slabs. The petrology, geochemical signatures, field characteristics, and rock associations of the late Carboniferous mafic to felsic intrusive rocks imply that they formed in a post-collisional extensional tectonic setting that developed after the amalgamation of the Xing’an and Songliao–Xilinhot blocks and closure of the Nenjiang Ocean between them. Considering that the tectonic setting during the early Carboniferous was one of regional subduction, our data constrain the amalgamation of the Xing’an and Songliao–Xilinhot blocks and the closure of the Nenjiang Ocean to the early late Carboniferous. © 2020, Geologische Vereinigung e.V. (GV).
英文关键词	Central Great Xing’an Range; Late Carboniferous; Mafic to felsic rocks; Petrogenesis; Tectonic implications
语种	英语
scopus关键词	Carboniferous; felsic rock; mafic rock; magma; petrogenesis; subduction; tectonic setting; China; Da Hinggan Mountains; Nei Monggol; Songliao Plain; Xilinhaote
来源期刊	International Journal of Earth Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/147705
作者单位	Shenyang Center, China Geological Survey, Shenyang, China; College of Earth Sciences, Jilin University, Changchun, China; Key Lab of Submarine Geoscience and Prospecting Techniques, Frontiers Science Center for Deep Ocean Multispheres and Earth System, MOE, College of Marine Geosciences, Ocean University of China, Qingdao, 266100, China; Laboratory for Marine Mineral Resources, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266100, China
推荐引用方式 GB/T 7714	Ma Y.-F.,Liu Y.-J.,Wang Y.,等. Late Carboniferous mafic to felsic intrusive rocks in the central Great Xing’an Range; NE China: petrogenesis and tectonic implications[J],2020,109(3).
APA	Ma Y.-F..,Liu Y.-J..,Wang Y..,Qin T..,Chen H..,...&Zang Y..(2020).Late Carboniferous mafic to felsic intrusive rocks in the central Great Xing’an Range; NE China: petrogenesis and tectonic implications.International Journal of Earth Sciences,109(3).
MLA	Ma Y.-F.,et al."Late Carboniferous mafic to felsic intrusive rocks in the central Great Xing’an Range; NE China: petrogenesis and tectonic implications".International Journal of Earth Sciences 109.3(2020).