Ophiolitic mélanges in crustal-scale fault zones: implications for the Late Palaeozoic tectonic evolution in West Junggar, China

  title={Ophiolitic m{\'e}langes in crustal-scale fault zones: implications for the Late Palaeozoic tectonic evolution in West Junggar, China},
  author={Shi Chen and Georgia Pe-Piper and David J W Piper and Zhaojie Guo},
The Baijiantan and Darbut ophiolites in West Junggar are exposed in steep fault zones (>70°) containing serpentinite melange, in contact on either side with regionally distributed Upper Devonian-Lower Carboniferous ocean floor peperitic basalts and overlying sedimentary successions. The ophiolitic melanges show classic structural features created by strike-slip faulting and consistent shear sense indicators of left-slip kinematics. Sandstone blocks within the melanges resemble the surrounding… Expand
Emplacement of the ophiolitic mélanges in the west Karamay area: Implications for the Late Paleozoic tectonic evolution of West Junggar, northwestern China
Abstract The Darbut and Karamay ophiolitic melanges in the west Karamay area at the southeastern margin of West Junggar, southern Altaids, represent the relict fragments of the Paleozoic JunggarExpand
Geochemistry of mafic rocks and cherts in the Darbut and Karamay ophiolitic mélanges in West Junggar, northwestern China: Evidence for a Late Silurian to Devonian back-arc basin system
Abstract The Darbut and Karamay ophiolitic melanges in the West Junggar region of the Chinese Altaids, Central Asia, represent the relict fragments of the Late Paleozoic Junggar ocean basin. TheExpand
Origin and tectonic significance of the Hoboksar ophiolitic mélange in northern West Junggar (NW China)
Abstract Although the Early Paleozoic tectonic framework of northern West Junggar is essential for understanding accretionary processes in the southwestern Central Asian Orogenic Belt, this settingExpand
OIB-type rocks within West Junggar ophiolitic mélanges: Evidence for the accretion of seamounts
Abstract The Central Asian Orogenic Belt (CAOB, also known as the Altaid Tectonic Collage), one of the largest and long-lived accretionary orogens in the world, developed from ca. 600 Ma to 250 Ma byExpand
Peperites Associated Pillow Lavas within Ophiolites and New Insight to Tectonic Setting: Comparative Study between Oman and West Junggar of China
Peperites are generated by magma intruding and mingling with wet unconsolidated or poorly consolidated sediments. Late Paleozoic peperites have been identified in the Darbut and Baijiantan ophioliticExpand
The tectono-magmatic evolution of the West Junggar terrane (NW China) unravelled by U–Pb ages of detrital zircons in modern river sands
ABSTRACT The West Junggar terrane (WJT) is an outstanding laboratory for studying the tectonic evolution of the Junggar–Balkhash Ocean, because it contains widespread Paleozoic magmatism in differentExpand
Closure Time of the Junggar‐Balkhash Ocean: Constraints From Late Paleozoic Volcano‐Sedimentary Sequences in the Barleik Mountains, West Junggar, NW China
The Junggar–Balkhash Ocean was a major branch of the southern Paleo-Asian Ocean. The timing of its closure is important for understanding the history of the Central Asian Orogenic Belt. NewExpand
Paleozoic convergence processes in the southwestern Central Asian Orogenic Belt: Insights from U–Pb dating of detrital zircons from West Junggar, northwestern China
Abstract The West Junggar orogen, located in the southwestern Central Asian Orogenic Belt (CAOB), preserves an abundant record of tectonic processes associated with the evolution of the JunggarExpand
Carboniferous arc-related volcanism in SW Bogda Mountain, Northwest China, and its implications for regional tectonics
Abstract The Upper Carboniferous of Bogda Mountain is a critical area for understanding final oceanic closure of the Junggar Ocean in the Central Asian Orogenic Belt (CAOB). The 4 km thick LiushugouExpand
Permian rifting processes in the NW Junggar Basin, China: Implications for the post-accretionary successor basins
Abstract The Junggar Basin, bounded by the West Junggar along late Carboniferous strike-slip faults in the west, is a post- orogenic successor basin within the Neoproterozoic to Paleozoic CentralExpand


Geochronology and geochemistry of basaltic rocks from the Sartuohai ophiolitic mélange, NW China: Implications for a Devonian mantle plume within the Junggar Ocean
Abstract The West Junggar domain in NW China is a distinct tectonic unit of the Central Asian Orogenic Belt (CAOB). It is composed of Paleozoic ophiolitic melanges, arcs and accretionary complexes.Expand
Ultramafic–mafic mélange, island arc and post-collisional intrusions in the Mayile Mountain, West Junggar, China: Implications for Paleozoic intra-oceanic subduction–accretion process
Abstract The West Junggar, northwestern China, is located in the southwest of the Central Asian Orogenic Belt (CAOB) and consists of Paleozoic ophiolitic melanges, arcs and accretionary complexes.Expand
Late Paleozoic peperites in West Junggar, China, and how they constrain regional tectonic and palaeoenvironmental setting
Abstract Late Paleozoic peperites have been identified for the first time at the bottom of Tailegula Formation in West Junggar, China. This finding is significant for the reconstruction of LateExpand
Time constraints,tectonic setting of Dalabute ophiolitic complex and its significance for Late Paleozoic tectonic evolution in West Junggar
Yegezikala granite situated near Saertuohai,one typical stitching pluton,intruded into Dalabute ophiolitic complex.The SHRIMP zircon U-Pb dating results of Yegezikala granite yield an age of 308 ±Expand
Kinematics and age constraints of deformation in a Late Carboniferous accretionary complex in Western Junggar, NW China
Abstract The Karamay area, situated in the eastern part of Western Junggar, Southern Altaids, contains an ophiolitic melange with ultramafic rocks, gabbro, basalt, chert and limestone, which showExpand
Basement of Junggar basin:evidence from detrital zircons in sandstone of previous Devonian Kalamaili formation.
There has been a hot-debated issue on the tectonic attribute and ages of the basement of Junggar basin in geological field for a long time.On the basis of Paleozoic regional geological setting,theExpand
Tectonic development of the southern Chinese Altai Range as determined by structural geology, thermobarometry, 40Ar/39Ar thermochronology, and Th/Pb ion-microprobe monazite geochronology
The 2500-km Altai Range is located in the central part of the Central Asia Orogenic System, a tectonic collage comprising oceanic and continental fragments that were assembled during the PaleozoicExpand
Geochronological and geochemical study of the Darbut Ophiolitic Complex in the West Junggar (NW China): Implications for petrogenesis and tectonic evolution
Abstract The Darbut Ophiolitic Complex consists of ultramafic rocks, cumulates, pillow lavas and abyssal radiolarian cherts, and occurs in the Sartuohai–Suluqiaoke area which is situated in theExpand
A Devonian to Carboniferous intra-oceanic subduction system in Western Junggar, NW China
Abstract The Devonian and Carboniferous rock assemblages in Western Junggar, southern Altaids, include ophiolitic melanges and coherent units. At Baijiantan, Yeyagou and Dagun Devonian gabbros andExpand
Kinematic analysis of mélange fabrics: examples and applications from the McHugh Complex, Kenai Peninsula, Alaska
Permian to Cretaceous melange of the McHugh Complex on the Kenai Peninsula, south-central Alaska includes blocks and belts of graywacke, argillite, limestone, chert, basalt, gabbro, and ultramaficExpand