Late Paleozoic subduction system in the southern Central Asian Orogenic Belt: Evidences from geochronology and geochemistry of the Xiaohuangshan ophiolite in the Beishan orogenic belt

Zheng, Rongguo; Wu, Taotao; Zhang, Wen; Xu, Cheng; Meng, Qingpeng

doi:10.1016/j.jseaes.2012.10.033

Cited by 76 publications

(30 citation statements)

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“…Consequently, it seems instead to represent a back‐arc basin (BGMRGP, ; Zuo & He, ). A new 206 Pb/ 238 U age of 336 ± 4 Ma (weighted average, n = 14) from basalt of the Xiaohuangshan ophiolite indicates subduction was ongoing in the Early Carboniferous (Zheng et al, ). Therefore, it seems that a complete trench‐arc‐basin system existed in Middle Silurian time.…”

Section: Discussionmentioning

confidence: 99%

“…Similar to the tectonic framework of the South Tianshan Ocean, the MSX ophiolitic belt represents a fragment of the main ocean that existed until early Carboniferous (ca. 336 Ma) time (Zhang et al, ; Zheng et al, ), and the HNX ophiolite belt represented a back‐arc basin that existed during Early Cambrian to Middle Silurian (ca. 533–426 Ma) time.…”

Section: Discussionmentioning

confidence: 99%

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Recognition of a Devonian‐early Mississippian plutonic belt in the eastern Beishan area, Northwest China, and its tectonic implications

et al. 2017

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The Beishan area, located in the southernmost part of the Central Asia Orogenic Belt, is crucial for understanding the tectonic evolution associated with the closure of the Paleo‐Asian Ocean. One intermediate and two granitic plutons from the eastern Beishan area between Mingshui–Shibanjing–Xiaohuangshan (MSX) and Niujuanzi–Xichangjing (NX) ophiolitic belts, including Tongchangkou gabbroic diorite, Northern Tongchangkou and Sandaomingshui plutons, are dated at 426 ± 3, 408 ± 2, and 365 ± 2 Ma by SIMS U–Pb zircon analyses. The Middle Silurian Tongchangkou gabbroic diorites with medium‐K calc‐alkaline metaluminous characteristics represent volcanic arc rocks. The Early Devonian Northern Tongchangkou pluton, a highly evolved calc‐alkaline mylonitic monzogranite with low εNd(t), −3.5 and −2.4, and relatively low initial 87Sr/86Sr (0.707095 and 0.707249), was mainly derived from Mesoproterozoic mafic to intermediate igneous protolith and shows both volcanic arc and postcollisional characteristics. The Late Devonian Sandaomingshui pluton, a calc‐alkaline granite with slightly positive εNd(t), 0.6 and 0.9, and low (87Sr/86Sr)t, 0.705543 and 0.705851, is likely from a more depleted source and represents a volcanic arc granite. Combined with previous studies of Late Paleozoic granites, we find that the widely distributed Permian granites in Central Asia Orogenic Belt are absent between MSX and NX ophiolitic belts. Given the regional geology, we conclude that the back‐arc basin represented by the NX ophiolitic belt closed during Early Devonian and afterward, flat subduction of the oceanic basin represented by the MSX ophiolitic belt occurred. It also indicates that the oceanic crust was still being produced in the Paleo‐Asian Ocean during the early Carboniferous.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Recognition of a Devonian‐early Mississippian plutonic belt in the eastern Beishan area, Northwest China, and its tectonic implications

et al. 2017

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“…1) consists of mostly calc-alkaline plutons and highgrade metamorphic rocks of poorly understood origin, with the Carboniferous Heiyingshan arc intruded through its northern margin. The Carboniferous age of the Xiaohuangshan ophiolite (Zheng et al, 2013) provides the only constraint for its timing of (final) suturing to the Mazongshan arc. The Dundunshan arc modified its Precambrian core with magmatic activity spanning the Ordovician to Permian in a southerly migrating arc (Qu et al, 2011;Mao et al, 2012a;Guo et al, 2014).…”

Section: Geologic Settingmentioning

confidence: 99%

“…The Dundunshan arc modified its Precambrian core with magmatic activity spanning the Ordovician to Permian in a southerly migrating arc (Qu et al, 2011;Mao et al, 2012a;Guo et al, 2014). A large swath of sedimentary rocks that resemble a cohesive block of passive margin sediments line ; SBJ = Shibanjing ophiolite; XHS = Xiaohuangshan ophiolite (Zheng et al, 2013); YX(O) = Yueyashan-Xichangjing ophiolites (Ao et al, 2012). Abbreviations used in inset map: CAOB = Central Asian Orogenic Belt; NCC = North China Craton.…”

Section: Geologic Settingmentioning

confidence: 99%

“…1). A strong focus on the geochemistry of the Beishan ophiolites has inferred most to be supra-subduction zone in their nature (Wang et al, 2011;Mao et al, 2012b;Zheng et al, 2013;Tian et al, 2014), and the interpretations that follow have furthered the argument for multiple, contemporaneous subduction, obduction and accretion events that may have had varying subduction polarity. http://dx.doi.org/10.1016/j.jseaes.2014.10.038 1367-9120/Ó 2014 Elsevier Ltd. All rights reserved.…”

Section: Introductionmentioning

confidence: 99%

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Petrogenesis and implications for tectonic setting of Cambrian suprasubduction-zone ophiolitic rocks in the central Beishan orogenic collage, Northwest China

Cleven

Lin

Guilmette

et al. 2015

Journal of Asian Earth Sciences

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Elucidating tectonic events and processes from variably tectonized conglomerate clast detrital geochronology: Examples from the Permian Hongliuhe Formation in the southern Central Asian orogenic Belt, NW China

et al. 2016

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This article expands upon detrital zircon geochronology with a sampling and analysis strategy dating variably tectonized granitoid conglomerate clasts. Its purpose is to elucidate details of the provenance's tectonomagmatic history from deformation-relative age distributions. The method involves bulk samples of clasts, sorted based on the degree of internal ductile deformation. Isolating granitoid clasts, we divide them into three subsets: undeformed, slightly deformed, and deformed. Laser ablation, inductively coupled plasma mass spectrometry U-Pb geochronology is performed on zircon separates of each subset. Our case study, involving the Permian Hongliuhe Formation in the southern Central Asian Orogenic Belt, analyzes each of the three clast subsets, as well as sandstone detrital samples, at three stratigraphic levels and yields a profile of the unroofed provenance. Clast age distributions exhibit different, wider-age spectra than sandstone samples, an effect of proximity to the respective provenance. They indicate a minimal lag time, implying rapid exhumation rates, whereas sandstone data alone would indicate a 90 Myr lag time. Early Paleozoic arc-building episodes appear as Ordovician peaks in sandstone data and Silurian-Devonian peaks in clast data, indicating a younging of magmatism toward proximal provenance. A magmatic hiatus starts in the Devonian, correlating with the latest age of deformed clasts, interpreted as timing of collisional tectonics. The detailed age spectra provide regional tectonic context and interpretation of processes, as well as more robust provenance interpretation than could be determined from sandstone samples alone. The variably tectonized clast detrital geochronology method removes human sampling bias and the practical limits of studying regional granitoid distributions.

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Late Paleozoic subduction system in the southern Central Asian Orogenic Belt: Evidences from geochronology and geochemistry of the Xiaohuangshan ophiolite in the Beishan orogenic belt

Cited by 76 publications

References 41 publications

Recognition of a Devonian‐early Mississippian plutonic belt in the eastern Beishan area, Northwest China, and its tectonic implications

Recognition of a Devonian‐early Mississippian plutonic belt in the eastern Beishan area, Northwest China, and its tectonic implications

Petrogenesis and implications for tectonic setting of Cambrian suprasubduction-zone ophiolitic rocks in the central Beishan orogenic collage, Northwest China

Elucidating tectonic events and processes from variably tectonized conglomerate clast detrital geochronology: Examples from the Permian Hongliuhe Formation in the southern Central Asian orogenic Belt, NW China

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