An orocline in the eastern Central Asian Orogenic Belt

Liu, Yongjiang; Liu, Weimin; Ma, Yongfei; Feng, Zhiqiang; Guan, Qingbin; Li, Sanzhong; Chen, Zhao‐Xu; Liang, Chenyue; Wen, Qiang

doi:10.1016/j.earscirev.2021.103808

Cited by 92 publications

(71 citation statements)

References 203 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the regional area, the marine stratum gradually disappeared at the end of the Early Carboniferous, and the continental stratum developed in the Late Carboniferous (Bureau of Geology and Mineral Resources of Inner Mongolia Autonomous Region, 1996), suggesting that the ocean basin was gradually closed during this period. Due to the limitation of field conditions, the emplacement age of the ophiolites have not been tested directly (Dong et al, 2018; Feng et al, 2018, 2019; Gou, Sun, Deng, Feng, & Tang, 2020; Y. J. Liu et al, 2019, 2021). Combined with the age of Xinlin leucogranite in the north of the suture zone (324 ± 1 Ma; Feng et al, 2019), structural and stratigraphic contact relationship, it is inferred that the tectonic emplacement age of ophiolites in the study area may be concentrated in the late Early Carboniferous, but it should be no later than the Late Carboniferous, that is, the period of collision and orogeny and the approximate closing time of the back‐arc basin (Figure 9III).…”

Section: Discussionmentioning

confidence: 99%

Section: Tectonic Evolution Of the Wunuer Ophiolitementioning

confidence: 99%

See 1 more Smart Citation

Supra‐subduction zone ophiolite from the Great Xing'an Range, China: Geochemistry, geochronology, and implication for formation in a back‐arc setting

et al. 2021

View full text Add to dashboard Cite

Ophiolite provides key information on subduction–accretion processes along convergent plate margins. The Wunuer ophiolite in the Great Xing'an Range of NE China was considered to be an accreted fragment of the Palaeo‐Oceanic Plate. Based on field investigation, we evaluate the petrotectonic assemblages, geochemical features, and formation age of the ophiolite, which comprises gabbro, diabase, metabasalt, and radiolarian bedded chert with serpentinized amphibole‐pyroxene peridotites. Zircon U–Pb dating shows ages of 346 ± 6 Ma and 341 ± 6 Ma suggesting the timing of formation of the ophiolite as Early Carboniferous. The ophiolitic mafic rocks in Wunuer can be divided into two types based on their geochemical features. Type I is characterized by high Ti and low Al, with weakly negative Nb‐Ta and positive Pb anomalies and low light rare earth elements (LREE). These rocks display MORB‐like features, and correspond to partial melting product of depleted mantle. Type II has low Ti, high Al, notably negative Nb‐Ta and positive Pb anomalies, and is obviously enriched in LREE, large‐ion lithophile elements (LILE), and depleted in high‐field‐strength elements (HFSE), characterized by IAB‐like features, and may be formed by partial melting of more depleted mantle, which was strongly metasomatized by subduction fluids, resulted in high LILE/HFSE. The two types of ophiolites belong to SSZ type, obviously influenced by subduction, and their tectonic setting is inferred to be within a spreading ridge in a back‐arc basin. Combined with regional geological background, the Wunuer ophiolite probably represents a shrinking ocean basin and may be the late product of the long‐term and mature back‐arc basin, related to the terminal stage of ridge spreading within the back‐arc basin.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Tectonic Evolution Of the Wunuer Ophiolitementioning

confidence: 99%

Supra‐subduction zone ophiolite from the Great Xing'an Range, China: Geochemistry, geochronology, and implication for formation in a back‐arc setting

et al. 2021

View full text Add to dashboard Cite

show abstract

“…It is clear that the history of CAOB involved accretion and amalgamation of oceanic plateaus, seamounts, island arcs, and microcontinents (e.g., Kröner et al, 2014; Safonova & Santosh, 2014; Windley et al, 2007; Xiao et al, 2010; G. X. Yang et al, 2015; G. X. Yang, Li, et al, 2019), and accompanied with ridge subduction, slab roll‐back and oroclinal bending processes (e.g., P. F. Li et al, 2018, 2022; Y. J. Liu et al, 2021; T. Wang, Tong, et al, 2022; Windley & Xiao, 2018; Xiao et al, 2018, Xiao et al, 2020). However, geological effects of the subduction of seamounts and oceanic plateaus, which are likely present seamount chains on the ocean floors (e.g., Buchs et al, 2016; Greene et al, 2009; Kerr et al, 2000; Timm et al, 2013; J. Zhang & Zhang, 2020), has not been comprehensively evaluated yet during the formation of the CAOB (G. X. Yang et al, 2020).…”

Section: Implications For the Evolution Of Caobmentioning

confidence: 99%

“…X. Yang et al, 2015;G. X. Yang, Li, et al, 2019) Liu et al, 2021;T. Wang, Tong, et al, 2022;Xiao et al, 2018.…”

Section: Implications For the Evolution Of Caobmentioning

confidence: 99%

The effect of seamount chain subduction and accretion

Yang

Tong

et al. 2022

Geological Journal

View full text Add to dashboard Cite

Seamount chains (oceanic plateaus, submarine ridges) are unique morphologic features on the seafloor, which resulted from the motion of the lithosphere over a convective plume. Seamount chains are being carried along by plate motions, which are eventually subducted beneath continental/oceanic plates or accreted in the accretionary complex, thus causing a series of effects in the convergent margin. In this paper, we briefly review the distribution and features of the typical modern seamount chains, including Hawaiian‐Emperor and Louisville seamount chains, Cocos, Ninetyeast and Caroline ridges, and Ogasawara Plateau, and mainly focus on the effects of seamount chains subduction and accretion. The geological effects mainly include the following: (1) deformation and tectonic erosion of the overriding plate; (2) flat‐slab subduction in the convergent margin; (3) growth of continental crust through time; (4) subduction initiation of plate tectonics; (5) generation of large earthquakes; (6) magmatism of the volcanic arc; and (7) formation of porphyry copper and gold deposits. The subduction of seamount chains resulted in similar effects in the Central Asian Orogenic Belt (CAOB) which is one of the largest and longest‐lived accretionary orogens on Earth. However, there are still many aspects that need further improvements, such as identification of the seamounts in the geological record, and geodynamic effects of subducted seamount chains. A detailed study on these sides of the seamount chains will enable us to further understand the tectonic evolution and metallogenesis of the CAOB, especially in accretionary orogenesis, continental crust growth, and subduction initiation dynamics.

show abstract

“…The Central Asian Orogenic Belt (CAOB) is a giant accretion‐type orogen stretching from east to west, situated between the Siberian Craton and the Tarim‐North China Craton, which is one of the most significant continental accretion and modification areas around the world (Chen, Liang, et al, 2021; Li, 2006; Liu et al, 2021; Şengör & Natal'in, 1996; Şengör, Natal'in, & Burtman, 1993, Sengor, Natal'in, Sunal, & van der Voo, 2018; Xiao et al, 2009). Northeast China (NE China) is an essential part of the eastern segment of the CAOB, also known as the Xing'an‐Mongolian Orogenic Belt (XMOB; Heilongjiang Bureau of Geology and Mineral Resources, 1993; Ren, Jiang, Zhang, & Qing, 1980).…”

Section: Introductionmentioning

confidence: 99%

Metamorphism of the Yilan amphibolites from the Heilongjiang Complex and deformation of the granodioritic mylonites from the Jiamusi Massif, Northeastern China

et al. 2022

Self Cite

View full text Add to dashboard Cite

The Heilongjiang Complex records the evolution history of the Mudanjiang Ocean, which is of great significance to constrain the amalgamation process of the Jiamusi and Songnen‐Zhangguangcai Range massifs. We carried out petrological, chronological, geochemical, mineral chemical and electron backscatter diffraction (EBSD) fabric analyses on the Heilongjiang Complex in the Yilan area. The latest zircon U–Pb dating results show that the protolith ages of the amphibolite are 261.3 ± 3.0 Ma and 261.8 ± 3.3 Ma, while that of the granodioritic mylonite is 207.8 ± 2.2 Ma. The amphibolites and granodioritic mylonite are enriched in large‐ion lithophile elements (e.g., Rb, Ba, and Sr) and light rare earth elements, with depletion in high‐field‐ strength elements (e.g., Nb, Ta, Zr, and Hf), indicating that the formation of the protoliths of the amphibolites and granodioritic mylonite is related to the subduction of the Mudanjiang oceanic plate under the Songnen‐Zhangguangcai Range Massif. The amphibolites and granodioritic mylonite both experienced two periods of metamorphic and deformation events. The metamorphic degree of the early period of metamorphism is low amphibolite facies, which records a clockwise P–T path from early increased temperature and pressure to a late isothermal depressurization. The P–T path reveals that this period of metamorphism is associated with the collision between two massifs. The later period of metamorphism reaches low greenschist facies, accompanied by deformation, which may be related to the rapid exhumation of the Heilongjiang Complex. This study provides a new perspective for exploring the collision and collage process of the Jiamusi and Songnen‐Zhangguangcai Range massifs.

show abstract

An orocline in the eastern Central Asian Orogenic Belt

Cited by 92 publications

References 203 publications

Supra‐subduction zone ophiolite from the Great Xing'an Range, China: Geochemistry, geochronology, and implication for formation in a back‐arc setting

Supra‐subduction zone ophiolite from the Great Xing'an Range, China: Geochemistry, geochronology, and implication for formation in a back‐arc setting

The effect of seamount chain subduction and accretion

Metamorphism of the Yilan amphibolites from the Heilongjiang Complex and deformation of the granodioritic mylonites from the Jiamusi Massif, Northeastern China

Contact Info

Product

Resources

About