Sedimentological and geochronological constraints on the Carboniferous evolution of central Inner Mongolia, southeastern Central Asian Orogenic Belt: Inland sea deposition in a post-orogenic setting

Zhao, Pan; Xu, Bei; Tong, QinLong; Chen, Yan; Faure, Michel

doi:10.1016/j.gr.2015.01.010

Cited by 66 publications

(36 citation statements)

References 71 publications

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“…In addition and based on the tectonic setting discrimination plots of La–Th–Sc and Th–Sc–Zr/10 (Bhatia & Crook, ), almost all samples from the Zhesi Formation fall into the continental arc field (Figure ), suggesting that these rocks were deposited from pre‐existing magmatic arc materials in the tectonic setting of the active continental margin. Zhao, Xu, Tong, Chen, and Faure () made similar investigations and stratigraphic correlations of Late Carboniferous clastic‐carbonate sedimentary succession in central Inner Mongolia which confirmed that an extensive transgression event existed at that time. Shao, Tang, and He (), on the other hand, reappraised the Early Permian strata in central Inner Mongolia and concluded an upward‐deepening sedimentary succession.…”

Section: Discussionmentioning

confidence: 62%

Provenance analysis of Permian sandstones from the Solonker area in central Inner Mongolia, China: Constraints from detrital zircon U‐Pb geochronology and whole‐rock geochemistry

Shi

Anderson

2020

Geological Journal

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We undertook an integrated approach incorporating whole‐rock geochemistry and detrital zircon U‐Pb geochronology from Permian sedimentary rocks in the Solonker area of central Inner Mongolia, China with the aim of constraining the tectonic evolution of the eastern segment of the Central Asian Orogenic Belt. Geochemical analysis reveals a close relationship between the sedimentary and volcanic rock suites in the study region. Detrital zircons from seven samples collected from the Zhesi Formation yield U‐Pb ages that cluster around 309–275 Ma and 464–435 Ma, with two main age peaks of ~452 and ~288 Ma. However, additional detrital zircons with ages in the range of 2,634–543 Ma are sparse and with no obvious age peaks. The results suggest that the deposition of the Zhesi Formation occurred from the Middle to the Late Permian and from two major age provenances: the Precambrian basement of the North China Plate (~1,880 Ma and ~2,520 Ma) and the Paleozoic Southern orogenic belt along the northern margin of North China (~288 Ma and ~452 Ma). In this contribution, we suggest that the Zhesi Formation in the Solonker area formed in response to the Early to Middle Permian subduction tectonic setting of the Paleo‐Asian Ocean (PAO), probably formed in a forearc basin and that the final closure of the PAO occurred after the Late Permian.

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Section: Discussionmentioning

confidence: 62%

Provenance analysis of Permian sandstones from the Solonker area in central Inner Mongolia, China: Constraints from detrital zircon U‐Pb geochronology and whole‐rock geochemistry

Shi

Anderson

2020

Geological Journal

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“…The Benbatu Formation is characterized by terrestrial shallow‐marine clastic rocks and minor volcanic rocks, and the Amushan Formation is dominated by shallow‐marine detrital rocks and carbonate rocks (BGMRNM, ; Zhao et al, ). The Shoushangou Formation mainly consists of marine sedimentary rocks overlain by the volcanic rocks of the Dashizhai Formation (Bao et al, ; BGMRNM, , ; Zhao et al, ). However, there are less data available for the Shoushangou Formation (Zheng et al, ).…”

Section: Discussionmentioning

confidence: 99%

“…Instead, a postcollisional model has been considered, and an extension region occurred along or across the whole Solonker Suture Zone since the Carboniferous or Permian (Wang et al, ; Xu et al, ; Zhang et al, , ). Subsequently, an inland sea or a rift system initiated (Zhao, Xu, & Zhang, ; Zhao, Xu, Tong, Chen, & Faure, ).…”

Section: Introductionmentioning

confidence: 99%

A Late Carboniferous–Early Permian back‐arc basin in the southeastern Central Asian Orogenic Belt: Constraint from sedimentological and geochronological investigations of the Shoushangou Formation in the central Inner Mongolia

et al. 2019

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The Solonker Suture Zone was formed during the closure process of the Paleo‐Asian Ocean (PAO). In order to better constrain its tectonic setting and evolution history in the Late Carboniferous–Early Permian, we conducted an integrated study of the Shoushangou Formation in the central Inner Mongolia, involving the sedimentological features, depositional age, and detrital zircon populations. Our results indicate that the Shoushangou Formation was deposited in ca. 320–280 Ma, overlain by the Dashizhai Formation with ages of ca. 280–274 Ma, and the 330‐ to 280‐Ma detrital age data almost serve as the entire age component of this formation. Also, its stratigraphic reconstruction shows a coarsening‐upward marine sequence upwards, which is characterized by sandstone turbidites with a Bouma sequence and the numerous tuff involvements in the lower strata, showing a deep marine environment and synchronous volcanism. Integrating previous data and our results, with a gradually deepening water depth and a geographic variation, detrital zircon age spectra from the Late Carboniferous–Early Permian sequence show distinct differences, and a marked shift of multiple resources to a single source occurred in the Late Carboniferous–Early Permian. These clues suggest an active marginal setting and a northward‐dipping subduction during this period in the north side of the PAO, and we further attribute such a source variation to the spreading of a marine back‐arc basin after the amalgamation of the Uliastai Active Continental Margin with the Northern Accretionary Orogen. The Shoushangou Formation was the direct depositional response to such a back‐arc basin.

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“…(2) A Carboniferous-Permian post-orogenic extensional setting is documented by Carboniferous clastic-carbonate deposits, Permian intrusions and volcanic-sedimentary sequences (Tang, 1990;Zhang et al, 2008;Zhao et al, 2015). These rocks did not record any synmetamorphic ductile deformation, only tilting and folding.…”

Section: Fig 1 (A) Schematic Tectonic Map Of the Central Asian Orogmentioning

confidence: 99%

A new Triassic shortening-extrusion tectonic model for Central-Eastern Asia: Structural, geochronological and paleomagnetic investigations in the Xilamulun Fault (North China)

Zhao

Faure

Chen

et al. 2015

Earth and Planetary Science Letters

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International audienceAt the northern margin of the North China Block (NCB), the Xilamulun Fault (XMF) is a key belt to decipher the tectonic evolution of Central-Eastern Asia, as it records the Paleozoic final closure of the Paleo-Asian Ocean, and localizes a Late Triassic intracontinental deformation. In this study, structural analysis, 40Ar–39Ar dating, and paleomagnetic studies were performed to investigate the kinematics of the XMF and to further discuss its Triassic geodynamic significance in the Central-Eastern Asia framework after the Paleozoic Central Asian Orogenic evolution. The structural analyses reveal two phases of ductile deformation. The first one (D1), which displays N-verging and E–W trending folds, is related to the Early Paleozoic collisional event between the NCB and the Songliao–Hunshandake Block (SHB). The second phase (D2) displays a high-angle foliation and a pervasive sub-horizontal E–W stretching lineation with kinematic criteria indicative of dextral strike–slip shearing. The 40Ar–39Ar dating on mylonitic granite places the main shearing event around 227–209 Ma. This D2 shearing is coeval with that of the dextral strike–slip Bayan Obo–Chifeng Fault (BCF) and the Chicheng–Fengning–Longhua Fault to the south, which together constitute a dextral shearing fault system on the northern margin of the NCB during the Late Triassic. The paleomagnetic study performed on the Middle Permian Guangxingyuan pluton, located between the XMF and BCF, documents a local clockwise rotation of this pluton with respect to the NCB and SHB. Our multidisciplinary study suggests an NNW–SSE shortening and strike–slip shearing dominated tectonic setting on the northern margin of the NCB during the Late Triassic. Combining the contemporaneous dextral strike–slip movements of the XMF and BCF in northern China and the sinistral strike–slip movement of East Gobi Fault (EGF) in southeastern Mongolia with the large-scale tectonic framework, a Late Triassic NNW–SSE shortening-eastward extrusion tectonic model for Central-Eastern Asia is firstly proposed. The NNW–SSE shortening results in the eastward extrusion of the continental wedge bounded by the BCF and EGF, which is accommodated by the different kinematic patterns of the southern (XMF and BCF) and northwestern (EGF) bounding faults. This shortening-extrusion tectonic framework is tentatively interpreted as the result of the far field forces associated with three Late Triassic lithosphere-scale convergences in East Asia: i) northward intracontinental subduction between the NCB and South China Block, ii) collision of the Qiangtang Block with the Qaidam Block, and iii) southward subduction of the Mongol–Okhotsk Ocean beneath the Mongolia Block

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Sedimentological and geochronological constraints on the Carboniferous evolution of central Inner Mongolia, southeastern Central Asian Orogenic Belt: Inland sea deposition in a post-orogenic setting

Cited by 66 publications

References 71 publications

Provenance analysis of Permian sandstones from the Solonker area in central Inner Mongolia, China: Constraints from detrital zircon U‐Pb geochronology and whole‐rock geochemistry

Provenance analysis of Permian sandstones from the Solonker area in central Inner Mongolia, China: Constraints from detrital zircon U‐Pb geochronology and whole‐rock geochemistry

A Late Carboniferous–Early Permian back‐arc basin in the southeastern Central Asian Orogenic Belt: Constraint from sedimentological and geochronological investigations of the Shoushangou Formation in the central Inner Mongolia

A new Triassic shortening-extrusion tectonic model for Central-Eastern Asia: Structural, geochronological and paleomagnetic investigations in the Xilamulun Fault (North China)

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