DOI: 10.1007/s00531-016-1323-2
论文题名: Is the Paleoproterozoic Jiao-Liao-Ji Belt (North China Craton) a rift?
作者: Li Z. ; Chen B. ; Wei C.
刊名: International Journal of Earth Sciences
出版年: 2017
卷: 106, 期: 1 起始页码: 355
结束页码: 375
语种: 英语
英文关键词: Jiao-Liao-Ji Belt
; North China Craton
; Paleoproterozoic
; Tectonic evolution
Scopus关键词: arc-continent collision
; extensional tectonics
; magmatism
; metamorphism
; Proterozoic
; rift zone
; sedimentation
; subduction zone
; tectonic evolution
; China
; North China Block
英文摘要:
As a typical example of the Paleoproterozoic crust in the Eastern Block of the North China Craton, the Paleoproterozoic Jiao-Liao-Ji Belt consists principally of the Liaohe Group (and its equivalents), Liaoji granites and mafic intrusions. Previous studies indicate that the evolution of the Jiao-Liao-Ji Belt has been mainly attributed to the opening and closing of an intracontinental rift along the eastern continental margin of the North China Craton. Here we synthesize the Paleoproterozoic magmatism, sedimentation, metamorphism and metallogeny against the rift model and propose a process of arc-continent collision between the northern Longgang and the southern Nangrim Blocks. This conclusion is consistent with the observations, including that (a) the 2.0- to 2.2-Ga magmatism shows a typical subalkaline series, rather than a bimodal distribution, since the mafic rocks mostly have arc affinities and the acidic–intermediate rocks belong to the calc-alkaline series; (b) the main source of the 1.9- to 2.0-Ga sedimentary rocks is the Paleoproterozoic arc materials, indicating a fore-arc or back-arc basin setting; (c) a couple of big borate deposits occur in the boron-rich volcanic rocks that were formed in convergent continental margins; (d) the North and South Liaohe Groups show different rock associations and metamorphic histories (P–T paths); and (e) the Nangrim and Longgang Blocks vary in lithological units, geochronology and metamorphic features. Thus, an arc-continent collision tectonic scenario for the Paleoproterozoic Jiao-Liao-Ji Belt is involved: (a) a southward subduction in the period 2.0–2.2 Ga; (b) sedimentation during the period 1.9–2.0 Ga; (c) arc-continent collision at ca. 1.9 Ga; and (d) post-collisional extension at 1.82–1.87 Ga, marking the end of the Paleoproterozoic tectonothermal event. © 2016, Springer-Verlag Berlin Heidelberg.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84963670143&doi=10.1007%2fs00531-016-1323-2&partnerID=40&md5=66e67dbec3ba92ce1393f6a5628e7535
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70082
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: The Key Laboratory of Orogenic Belts and Crustal Evolution, Ministry of Education, School of Earth and Space Sciences, Peking University, Beijing, China; School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, Anhui, China
Recommended Citation:
Li Z.,Chen B.,Wei C.. Is the Paleoproterozoic Jiao-Liao-Ji Belt (North China Craton) a rift?[J]. International Journal of Earth Sciences,2017-01-01,106(1)