Sedimentological and geochronological constraints on the Carboniferous   evolution of central Inner Mongolia, southeastern Central Asian Orogenic   Belt: Inland sea deposition in a post-orogenic setting

doi:10.1016/j.gr.2015.01.010

CORC > 北京大学 > 地球与空间科学学院

	Sedimentological and geochronological constraints on the Carboniferous evolution of central Inner Mongolia, southeastern Central Asian Orogenic Belt: Inland sea deposition in a post-orogenic setting
	Zhao, Pan ; Xu, Bei ; Tong, Qinlong ; Chen, Yan ; Faure, Michel
刊名	GONDWANA RESEARCH
	2016
关键词	Central Asian Orogenic Belt Central Inner Mongolia Carboniferous Sedimentary Detrital zircon NORTH CHINA CRATON PHANEROZOIC CRUSTAL GROWTH SUBDUCTION-ACCRETION COMPLEX U-PB AGES TECTONIC IMPLICATIONS CONTINENTAL GROWTH ZIRCON GEOCHRONOLOGY SIBERIAN CONTINENT SEDIMENTARY RECORD ISOTOPIC EVIDENCE
DOI	10.1016/j.gr.2015.01.010
英文摘要	Sedimentological and geochronological analyses were performed on Carboniferous strata from central Inner Mongolia (China) to determine the tectonic setting of the southeastern Central Asian Orogenic Belt (CAOB). Sedimentological analyses indicate that the widespread Late Carboniferous strata in central Inner Mongolia were dominated by shallow marine dastic-carbonate deposition with basal conglomerate above the Precambrian basement and Early Paleozoic orogenic belts. Based on lithological comparison and fossil similarity, five sedimentary stages were used to represent the Carboniferous deposition. The depositional stages include, from bottom to top, 1) basal molassic, 2) first carbonate platform, 3) terrigenous with coeval intraplate volcanism, 4) second carbonate platform, and 5) post-carbonate terrigenous. These five stages provide evidence for an extensive transgression in central Inner Mongolia during the Late Carboniferous. Detrital zircon geochronological studies from five samples yielded five main age populations: similar to 310 Ma, similar to 350 Ma, 400-450 Ma, 800-1200 Ma and some Meso-Proterozoic to Neoarchean grains. The detrital zircon geochronological studies indicate that the provenances for these Late Carboniferous strata were mainly local magmatic rocks (Early Paleozoic arc magmatic rocks and Carboniferous intrusions) with subordinate input of Precambrian basement. Combining our sedimentological and provenance analyses with previous fossil comparison and paleomagnetic reconstruction, an inland sea was perceived to be the main paleogeographic feature for central Inner Mongolia during the Late Carboniferous. The inland sea developed on a welded continent after the collision between North China Craton and its northern blocks. (C) 2015 International Association for Gondwana Research. Elsevier B.V. All rights reserved.; National Key Basic Research Program of China [2013CB429806]; National Science Foundation of China [40872145, 41121062]; SCI(E); ARTICLE; bxu@pku.edu.cn; 253-270; 31
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/438552]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Zhao, Pan,Xu, Bei,Tong, Qinlong,et al. Sedimentological and geochronological constraints on the Carboniferous evolution of central Inner Mongolia, southeastern Central Asian Orogenic Belt: Inland sea deposition in a post-orogenic setting[J]. GONDWANA RESEARCH,2016.
APA	Zhao, Pan,Xu, Bei,Tong, Qinlong,Chen, Yan,&Faure, Michel.(2016).Sedimentological and geochronological constraints on the Carboniferous evolution of central Inner Mongolia, southeastern Central Asian Orogenic Belt: Inland sea deposition in a post-orogenic setting.GONDWANA RESEARCH.
MLA	Zhao, Pan,et al."Sedimentological and geochronological constraints on the Carboniferous evolution of central Inner Mongolia, southeastern Central Asian Orogenic Belt: Inland sea deposition in a post-orogenic setting".GONDWANA RESEARCH (2016).