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• W3012392007 endingPage "2201" @default.
• W3012392007 startingPage "2175" @default.
• W3012392007 abstract "Abstract Recognition of accretionary tectonics in ancient orogenic collages is important for reconstructing the long-term subduction, accretion, and erosional history of fossil convergent margins, and for understanding crustal growth and supercontinent assembly. The North Qilian orogenic belt (NQOB), located between the Alxa block and the Central Qilian–Qaidam block in northeastern Tibet, is a typical Phanerozoic accretionary-to-collisional orogenic belt that represents the termination of the northern branch of the Proto-Tethys Ocean. It contains two subparallel ophiolitic belts, arcs, and subduction complexes; the ophiolitic rocks in the northern belt have generally been considered to have formed in a back-arc setting. However, the subduction-accretion-collision history, subduction polarity, and timing of closure of the back-arc ocean remain equivocal. To address these problems, we conducted detailed field, structural, and geochronological investigations of the Laohushan ophiolite–accretionary complex and related sedimentary rocks in the eastern NQOB. The Laohushan Complex is divisible into (1) a northern sedimentary forearc, and a supra-subduction zone-type ultramafic-mafic forearc (ca. 450 Ma) composed of serpentinized harzburgite, gabbro, basalt, and plagiogranite; and (2) a southern accretionary complex, which consists of relatively coherent basalt-chert-mudstone ocean plate stratigraphy that is structurally repeated many times, trench-fill turbidites, mélanges, and widespread thrust imbricates and duplexes, block-in-matrix and asymmetric structures. Kinematic analysis indicates that the accretionary complex underwent southward thrusting and shearing; coupled with the spatial architecture of the different tectonic units, which suggests northward subduction beneath the northern forearc on the southern margin of the Alxa block. Detrital zircon ages of forearc clastic sandstones, pelagic mudstones, trench-fill turbidites, and the matrix of mélanges, together with the zircon ages of igneous ophiolitic rocks and post-accretionary intrusions, indicate that the terminal accretion and tectonic stacking of the Laohushan subduction complex was between ca. 447 and 430 Ma. We propose a geodynamic model involving back-arc basin opening (ca. 517–449 Ma), intra-oceanic subduction-accretion (ca. 449–430 Ma), and final obduction of the northern forearc to account for the evolutionary processes of the North Qilian back-arc basin. The anatomy of the forearc ophiolite and structurally lower accretionary complex indicates the complicated origins and mechanism of emplacement of the ophiolitic rocks. Field-based reconstruction of accretionary complexes and upper plate ophiolites, together with provenance analysis of related sedimentary sequences, provide crucial constraints on the prolonged evolution of paleo-ocean basins and accretionary-to-collisional orogens." @default.
• W3012392007 created "2020-03-23" @default.
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• W3012392007 date "2020-03-10" @default.
• W3012392007 modified "2023-10-14" @default.
• W3012392007 title "Structural anatomy of the early Paleozoic Laohushan ophiolite and subduction complex: Implications for accretionary tectonics of the Proto-Tethyan North Qilian orogenic belt, northeastern Tibet" @default.
• W3012392007 cites W1149011379 @default.
• W3012392007 cites W1965917434 @default.
• W3012392007 cites W1967419857 @default.
• W3012392007 cites W1968617532 @default.
• W3012392007 cites W1969845853 @default.
• W3012392007 cites W1972365683 @default.
• W3012392007 cites W1976840700 @default.
• W3012392007 cites W1977912435 @default.
• W3012392007 cites W1981277445 @default.
• W3012392007 cites W1983492551 @default.
• W3012392007 cites W1985303665 @default.
• W3012392007 cites W1987647377 @default.
• W3012392007 cites W1988258618 @default.
• W3012392007 cites W1989445090 @default.
• W3012392007 cites W1990100525 @default.
• W3012392007 cites W1996553891 @default.
• W3012392007 cites W1998028544 @default.
• W3012392007 cites W2001365998 @default.
• W3012392007 cites W2003323528 @default.
• W3012392007 cites W2004664570 @default.
• W3012392007 cites W2007004781 @default.
• W3012392007 cites W2007061988 @default.
• W3012392007 cites W2008478454 @default.
• W3012392007 cites W2017491572 @default.
• W3012392007 cites W2019540385 @default.
• W3012392007 cites W2019695435 @default.
• W3012392007 cites W2026596341 @default.
• W3012392007 cites W2029057015 @default.
• W3012392007 cites W2038004391 @default.
• W3012392007 cites W2040200942 @default.
• W3012392007 cites W2041348811 @default.
• W3012392007 cites W2046696482 @default.
• W3012392007 cites W2048068769 @default.
• W3012392007 cites W2052023480 @default.
• W3012392007 cites W2056335536 @default.
• W3012392007 cites W2056564951 @default.
• W3012392007 cites W2066492844 @default.
• W3012392007 cites W2069141764 @default.
• W3012392007 cites W2069815139 @default.
• W3012392007 cites W2069883471 @default.
• W3012392007 cites W2071339220 @default.
• W3012392007 cites W2074607639 @default.
• W3012392007 cites W2075151941 @default.
• W3012392007 cites W2075328050 @default.
• W3012392007 cites W2075639614 @default.
• W3012392007 cites W2077113474 @default.
• W3012392007 cites W2078087514 @default.
• W3012392007 cites W2078165623 @default.
• W3012392007 cites W2080438375 @default.
• W3012392007 cites W2081493146 @default.
• W3012392007 cites W2081943426 @default.
• W3012392007 cites W2088949376 @default.
• W3012392007 cites W2089096123 @default.
• W3012392007 cites W2090590018 @default.
• W3012392007 cites W2090717098 @default.
• W3012392007 cites W2102249420 @default.
• W3012392007 cites W2110900538 @default.
• W3012392007 cites W2111555634 @default.
• W3012392007 cites W2115518283 @default.
• W3012392007 cites W2116795867 @default.
• W3012392007 cites W2125006930 @default.
• W3012392007 cites W2128912555 @default.
• W3012392007 cites W2130869872 @default.
• W3012392007 cites W2141517216 @default.
• W3012392007 cites W2146245376 @default.
• W3012392007 cites W2154143939 @default.
• W3012392007 cites W2156970566 @default.
• W3012392007 cites W2162334444 @default.
• W3012392007 cites W2167899736 @default.
• W3012392007 cites W2171086159 @default.
• W3012392007 cites W2178518901 @default.
• W3012392007 cites W2211236952 @default.
• W3012392007 cites W2272542992 @default.
• W3012392007 cites W2323903114 @default.
• W3012392007 cites W2336952164 @default.
• W3012392007 cites W2337954049 @default.
• W3012392007 cites W2342330377 @default.
• W3012392007 cites W2344180867 @default.
• W3012392007 cites W2387543009 @default.
• W3012392007 cites W239673772 @default.
• W3012392007 cites W2415666234 @default.
• W3012392007 cites W2417602269 @default.
• W3012392007 cites W2495446635 @default.
• W3012392007 cites W2507354539 @default.
• W3012392007 cites W2513494055 @default.
• W3012392007 cites W2517725795 @default.

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