Paleo-Tethyan evolution of Tibet as recorded in the East Cimmerides and West Cathaysides

Xu, Zhiqin; Dilek, Yıldırım; Cao, Hui; Yang, Jingsui; Robinson, Paul T.; Ma, Changqian; Li, Huaqi; Jolivet, Marc; Roger, Françoise; Chen, Xijie

doi:10.1016/j.jseaes.2015.01.021

Cited by 154 publications

(90 citation statements)

References 106 publications

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“…Some authors (e.g., Gu et al, ; Zhang et al, ) proposed that emplacement of the Weiya pluton in the Eastern Tianshan was related to the tectonic switch from the Palaeo‐Asian Ocean subduction‐collision system to the Palaeo‐Tethys Ocean regime. Besides, Triassic subduction‐related and syn‐collisional magmatic activities have extensively developed in the West Kunlun Orogen, located south of the Tarim Craton (Z. Q. Xu et al, ; H. F. Zhang et al, ) along with the consumption and closure of the Palaeo–Tethys oceanic basin as well as the collage of Songpan‐Garze and Qiangtang blocks to the southern margin of the Tarim Craton (F. Roger, Jolivet, & Malavieille, ; Song et al, ; Z. Q. Xu et al, ). This provenance link further agrees with the significant uplift and erosion of the Western Kunlun Orogen during the Triassic (F. Roger et al, ).…”

Section: Discussionmentioning

confidence: 99%

Crustal evolution in the South Tianshan Terrane: Constraints from detrital zircon geochronology and implications for continental growth in the Central Asian Orogenic Belt

et al. 2018

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The South Tianshan Terrane (STT) is located in the boundary between the south‐western Central Asian Orogenic Belt (CAOB) and the Tarim Craton and is a key area for understanding the geologic and tectonic history of the craton and the orogenic belt. In this paper, we report detrital zircon ages from the Late Palaeozoic and Mesozoic clastic sedimentary rocks from the southern part of STT. In combination with the U–Pb ages for felsic igneous and meta‐igneous rocks exposed in the STT and adjacent tectonic units, we identify several distinct age populations. Provenance analysis suggests that the detrital zircon grains were predominately derived from the felsic magmatic rocks in the Tarim Craton and South Tianshan Terrane. The pre‐Neoproterozoic age populations may be associated with the early history of the Tarim Craton. Several pulses of Neoproterozoic magmatism are revealed by our dataset, presumably related to the assembly and break‐up of the supercontinent Rodinia. The 995 to 901 Ma detrital zircon grains were likely sourced from magmatic rocks associated with the assembly of Neoproterozoic Tarim to Australia. Among the age population of 886 to 752 Ma, the older group might be related to the subduction‐related magmatism after the assembly of Rodinia, and the younger one records a protracted magmatic event in a continental rift‐related setting associated with the break‐up of Rodinia. Two younger Neoproterozoic age populations (736 to 694 Ma and 665 to 610 Ma), showing narrow spreads with weak peaks, represent the waning stages of igneous activities related to the break‐up of Rodinia. Regarding the Palaeozoic evolution, together with other evidence, our data indicate a two‐stage subduction model for the SW Palaeo‐Asian Ocean. The 490 to 384 Ma age population corroborates the existence of Early Palaeozoic continental arc magmatism at the northern margin of Palaeozoic Tarim generated by the bidirectional subduction of the South Tianshan Ocean. After a ~30 My period of tectonomagmatic quiescence, the second stage is marked by the northward subduction of the South Tianshan Terrane during Late Devonian to Early Carboniferous. The final collision of Tarim and the south‐western CAOB likely occurred during the Late Carboniferous, followed by syn‐ and post‐collisional magmatism, as represented by the 320 to 265 Ma age population. Based on the detrital zircon ages in conjunction with the Hf isotopic features of zircons from Palaeozoic igneous rocks, our study does not support the model of large‐scale Phanerozoic net continental growth in the South Tianshan Terrane.

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Section: Discussionmentioning

confidence: 99%

Crustal evolution in the South Tianshan Terrane: Constraints from detrital zircon geochronology and implications for continental growth in the Central Asian Orogenic Belt

et al. 2018

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“…Cenozoic deformation mainly produced a crustal scale shear zone and décollement between the Precambrian basement and the cover sequences, regional thrust faults and folds, and strike-slip fault zones. Figure 1 shows the tectonic setting of the Tibetan Plateau and the surrounding area, modified from the previous studies [33][34][35]. As shown in Figure 1, this study area is composed of the blocks of Altyn Tagh-East Kunlun-Qilian terrane, Songpan-Ganzi terrane, North Qiangtang terrane, South Qiangtang terrane, Lhasa terrane and Himalayan terrane, from north to south.…”

Section: Study Areamentioning

confidence: 99%

Regional Lithological Mapping Using ASTER-TIR Data: Preliminary Case Study for the Tibetan Plateau and the Surrounding Area

Ninomiya

2016

Preprint

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Abstract:The mineralogical indices; the Quartz Index (QI), Carbonate Index (CI) and Mafic Index (MI) for ASTER multispectral thermal infrared (TIR) data were applied to various geological materials for regional lithological mapping on the Tibetan Plateau. Many lithological and structural features are not currently well understood in the central Tibetan Plateau, including the distribution of mafic-ultramafic rocks related to the suture zones, the quartzose and carbonate sedimentary rocks accreted to the Eurasian continent, and sulfate layers related to the Tethys and neo-Tethys geological setting. These rock types can now be mapped with the interpretation of the processed ASTER TIR images described in this paper. A methodology is described for the processing of ASTER TIR data applied to a very wide region of the Tibetan Plateau. The geometrical and radiometric performance of the processed images is discussed, and the advantages of using ortho-rectified data are shown. The challenges of using ASTER data with small footprint in addition to selecting an appropriate subset of scenes are also examined. ASTER scenes possess a narrow swath width when compared to LANDSAT data (60 km vs. 185 km respectively). Furthermore, the ASTER data archive is vast consisting of approximately 3 million images. These details can present an added level of complexity during an image processing workflow. Finally, geological interpretations made on the maps of the indices are compared with prior geological field studies. The results from the investigations suggest that the indices perform well in the classification of quartzose rocks based on the carbonate and the mafic mineral content, in addition to the granitic rocks based on the feldspar content.

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“…Based on the differences between basement rocks and sedimentary cover, the Lhasa terrane is divided into the southern, central and northern sub‐terranes by the Luobadui‐Milashan Fault and the Shiquanhe‐Nam Tso Mélange zone (Pan et al, ; Zhu et al, ). Along the Sumdo suture zone (marked by ophiolite and eclogite), the Lhasa terrane is interpreted to have formed by the welding of the southern Lhasa terrane and the northern Lhasa terrane through closure of the newly discovered Paleotethys Ocean (Z. Q. Xu et al, ; Yang et al, ).…”

Section: Geological Backgroundmentioning

confidence: 99%

“…The Tibetan Plateau was built up through the sequential accretion of a series of Gondwana‐derived terranes along a number of suture zones such as the East Kunlun‐A'nyemaqen, Jinshajiang, Longmu Tso Shuanghu, Bangong‐Nujiang, Sumdo and Indus–Yarlung from present‐day north to south (Z. Q. Xu et al, ; Yin & Harrison, ). Among these accretionary terranes, the Lhasa terrane was last to make contact with the Eurasian plate.…”

Section: Introductionmentioning

confidence: 99%

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Early Jurassic intra‐oceanic arc system of the Neotethys Ocean: Constraints from andesites in the Gangdese magmatic belt, south Tibet

Meert

et al. 2017

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The Gangdese magmatic belt is located in the southern margin of the Lhasa terrane, south Tibet. Here zircon U–Pb ages and Hf isotopic data, as well as whole‐rock geochemistry and Sr–Nd isotopes on andesites from the Bima Formation with a view to evaluating the history of the Gangdese magmatism and the evolution of the Neotethys Ocean. Zircon U–Pb dating yields an age of ca 170 Ma from six samples, representing the eruptive time of these volcanic rocks. Zircon Hf isotopes show highly positive εHf(t) values of +13 to +16 with a mean of +15.2. Whole‐rock geochemical and Sr–Nd isotopic results suggest that the magma source of these andesites was controlled by partial melting of a depleted mantle source with addition of continental‐derived sediments, similar to those in the southern arcs of the Lesser Antilles arc belt. In combination with published data, the volcanic rocks of the Bima Formation are proposed to have been generated in an intra‐oceanic arc system, closely associated with northward subduction of the Neotethyan oceanic lithosphere.

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Paleo-Tethyan evolution of Tibet as recorded in the East Cimmerides and West Cathaysides

Cited by 154 publications

References 106 publications

Crustal evolution in the South Tianshan Terrane: Constraints from detrital zircon geochronology and implications for continental growth in the Central Asian Orogenic Belt

Crustal evolution in the South Tianshan Terrane: Constraints from detrital zircon geochronology and implications for continental growth in the Central Asian Orogenic Belt

Regional Lithological Mapping Using ASTER-TIR Data: Preliminary Case Study for the Tibetan Plateau and the Surrounding Area

Early Jurassic intra‐oceanic arc system of the Neotethys Ocean: Constraints from andesites in the Gangdese magmatic belt, south Tibet

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