Permo-Triassic collision, subduction-zone metamorphism, and tectonic exhumation along the East Asian continental margin

W. G. Ernst, Tatsuki Tsujimori, Ruth Zhang, J. G. Liou

    Research output: Chapter in Book/Report/Conference proceedingChapter

    266 Citations (Scopus)


    Convergent plate motion at ∼320-210 Ma generated the Tongbai-Dabie-Sulu (east-central China)-Imjingang-Gyeonggi (central Korea)-Renge-Suo (Southwestern Japan)-Sikhote-Alin orogen along the paleo-Pacific edge of cratonal Asia. This amalgamated belt reflects collision between the Sino-Korean and Yangtze cratons on the SW portion, and accretion of outboard oceanic arcs ± sialic fragments against the NE margin. Subducted Proterozoic-Paleozoic continental and oceanic crustal complexes underwent high- and ultrahigh-pressure metamorphism at low to moderate temperatures. Tectonic slices of sialic crust episodically disengaged from the down-going plate and, driven by buoyancy, ascended rapidly to midcrustal levels from depths exceeding 90-200 km after continental collision in east-central China plus or minus Korea, and from ∼30-50 km after arrival of far-traveled oceanic terranes in SW Japan and the Russian Far East. On achieving neutral buoyancy and stalling out at 10-20 km depth, later doming, gravitational collapse, and erosion exposed parts of the high- and ultrahigh-pressure complexes. This curvilinear orogen has been segmented and offset by major and minor transverse faults. Also, regional backarc spreading opened marginal basins behind the Permo-Triassic convergent suture zone, further disturbing portions oceanward.

    Original languageEnglish
    Title of host publicationAnnual Review of Earth and Planetary Sciences
    EditorsRaymond Jeanloz, Arden Albee, Kevin Burke, Katherine Freeman
    Number of pages38
    Publication statusPublished - 2007

    Publication series

    NameAnnual Review of Earth and Planetary Sciences
    ISSN (Print)0084-6597


    • Continental collision
    • Crustal accretion
    • Crustal evolution
    • High-pressure metamorphism
    • Permo-Triassic East Asian margin
    • Ultrahigh-pressure metamorphism

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Earth and Planetary Sciences (miscellaneous)
    • Space and Planetary Science


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