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Accretion leading to collision and the Permian Solonker suture, Inner Mongolia, China: Termination of the central Asian orogenic belt
Xiao, WJ; Windley, BF; Hao, J; Zhai, MG
2003-12-04
Source PublicationTECTONICS
ISSN0278-7407
Volume22Issue:6
SubtypeArticle
AbstractThe Solonker suture records the termination of the central Asian Orogenic Belt (CAOB). However, tectonic development of the Solonker suture is poorly understood. We report new field data for the Ondor Sum melange in the Ulan valley, and present a new evaluation of the orogenic belt extending from the southern Mongolia cratonic boundary to the north China craton within the context of a new geological framework and tectonic model, which incorporates relevant data from the literature. The southern accretionary zone between the north China craton and the Solonker suture is characterized by the Mid-Ordovician-Early Silurian Ulan island arc-Ondor Sum subduction-accretion complex and the Bainaimiao arc. This zone was consolidated by the Carboniferous-Permian when it evolved into an Andean-type magmatic margin above a south dipping subduction zone. The northern accretionary zone north of the Solonker suture extends southward from a Devonian to Carboniferous active continental margin, through the Hegenshan ophiolite-arc accretionary complex to the Late Carboniferous Baolidao arc associated with some accreted Precambrian blocks. This northern zone had consolidated by the Permian when it developed into an Andean-type magmatic margin above a north dipping subduction zone. Final subduction of the central Asian ocean caused the two opposing active continental margins to collide, leading to formation of the Solonker suture in the end-Permian. Predominant northward subduction during final formation of the suture gave rise in the upper northern plate to a large-scale, postcollisional, south directed thrust and fold belt in the Triassic-Jurassic. In summary, the CAOB underwent three final stages of tectonic development: early Japanese-type accretion, Andean-type magmatism, and Himalayan-type collision.
KeywordSolonker suture accretion Permian Paleo-Asian ocean Inner Mongolia
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1029/2002TC001484
WOS KeywordTECTONIC EVOLUTION ; NORTHERN CHINA ; U-PB ; GEOCHEMICAL CONSTRAINTS ; HEGENSHAN OPHIOLITE ; PLATE-TECTONICS ; CRUSTAL GROWTH ; SIBERIA ; AGE ; PETROGENESIS
Indexed BySCI
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000187487300001
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:1074[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/78406
Collection中国科学院地质与地球物理研究所
Corresponding AuthorXiao, WJ
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Lithosphere Tecton Evolut, Beijing 100029, Peoples R China
2.Univ Leicester, Dept Geol, Leicester LE1 7RH, Leics, England
Recommended Citation
GB/T 7714
Xiao, WJ,Windley, BF,Hao, J,et al. Accretion leading to collision and the Permian Solonker suture, Inner Mongolia, China: Termination of the central Asian orogenic belt[J]. TECTONICS,2003,22(6).
APA Xiao, WJ,Windley, BF,Hao, J,&Zhai, MG.(2003).Accretion leading to collision and the Permian Solonker suture, Inner Mongolia, China: Termination of the central Asian orogenic belt.TECTONICS,22(6).
MLA Xiao, WJ,et al."Accretion leading to collision and the Permian Solonker suture, Inner Mongolia, China: Termination of the central Asian orogenic belt".TECTONICS 22.6(2003).
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