Late-Permian subduction-to-collision transition and closure of Paleo-Asian Ocean in eastern Central Asian Orogenic Belt: Evidence from borehole cores in the Songliao Basin, Northeast China

Zhang, Haihua; Qiu, Liang; Yan, Dan‐Ping; Zhao, Zi‐Fu; Cai, Keda; Zhang, Jian; Chen, Shuwang; Li, Yongfei; Song, Yu; Zheng, Yuejuan; Sun, Shouguang; Gong, Fanhao; Ariser, Shahnawaz

doi:10.1016/j.gr.2023.06.004

Cited by 8 publications

(6 citation statements)

References 85 publications

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“…The geochemical characteristics and genesis of the granite in this study indicate that the rock was formed by partial melting of MORB-type subducted oceanic crust. Combined with previous research [8,9,11,80], it is generally believed that the Paleo-Asian Ocean closed from the Late Permian to the Early-Middle Triassic, indicating that the adakitic rocks formed during the Early Late Permian were derived from melting of subducted slabs at depth, implying that in the Early Late Permian, the Paleo-Asian Ocean in the study area had not closed and was likely in the late stage of subduction.…”

Section: Tectonic Implicationssupporting

confidence: 73%

“…The intrusive bodies form vein-like intrusions into the Permian Linxi Formation clastic rocks (Figure 2b). [8]). The red star represents the geochronological sample, and the blue circles represent geochemical samples.…”

Section: Samplesmentioning

confidence: 99%

“…Extending from the Ural Mountains to the western Pacific coast, the CAOB traverses regions including Kazakhstan, the Tianshan Mountains, the Altai Mountains, Mongolia, and northeastern China [1][2][3][4][5][6]. This belt, formed through multiple episodes of accretion within the Paleo-Asian Ocean, comprises a complex structure of magmatic arcs, accretionary terranes, arc-related basins, and microcontinents [3][4][5][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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Discovery of Late Permian Adakite in Eastern Central Asian Orogenic Belt: Implications for Tectonic Evolution of Paleo-Asian Ocean

Zhang,

Qiu,

Zhang

et al. 2024

Minerals

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The Permian to Triassic period represents a pivotal phase in the evolution of the Paleo-Asian Ocean, marked by significant tectonic transitions from subduction, collision, and post-orogenic extension. The timing of closure of the Paleo-Asian Ocean in northeastern China has always been controversial. In this contribution, the petrology, zircon U-Pb geochronology and geochemistry are conducted on granite found in well HFD1, Songliao Basin, eastern part of Central Asian orogenic belt. Zircon U-Pb dating indicates that granite crystallized at 258.9 ± 2.2 Ma, as the product of magmatism occurred in the early Late Permian. The rocks have high SiO2, Al2O3, Na2O content, negative Eu anomaly, light enrichment of rare-earth elements, depletion of heavy rare-earth elements, high Sr (448.29–533.11 ppm, average 499.68 ppm), low Yb (0.49–0.59 ppm, average 0.54 ppm), Y (4.23–5.19 ppm, average 4.49 ppm), and high Sr/Y ratios (98–125, average 112) and can be classified as O-type adakite. This is the first discovery of late Paleozoic adakite in the Songliao Basin and the neighboring areas. The geochemistry of adakite indicates derivation by partial melting of MORB-type subducted oceanic crust, indicating that the subduction of the Paleo-Asian Oceanic lithosphere lasted until at least 258.9 Ma.

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Section: Tectonic Implicationssupporting

confidence: 73%

Section: Samplesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Discovery of Late Permian Adakite in Eastern Central Asian Orogenic Belt: Implications for Tectonic Evolution of Paleo-Asian Ocean

Zhang,

Qiu,

Zhang

et al. 2024

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“…Porphyrytype deposits commonly form in the young continental and oceanic arcs [4], and they are usually associated with magmatic-hydrothermal fluids exsolved from relatively oxidized intermediate-felsic magmas with high oxidation states [1,4]. However, porphyry Mo(Cu) deposits in the margins of North China Craton mainly occurred in a post-collision extension setting and the ore-forming magmas stemmed from an old lower crust source [5][6][7][8][9][10][11][12][13][14]. Therefore, the origin and evolution processes of ore-forming magmas and their tectonic setting are significant for understanding the formation of economic porphyry deposits [1,2,4].…”

Section: Introductionmentioning

confidence: 99%

“…The Dananhu-Tousuquan arc belt (DTA) is located in the northern part of the Eastern Tianshan, which hosts Tuwu-Yandong, Fuxing, Linglong, Chihu, Yuhai porphyry deposits. Previous studies are mainly focused on these porphyry deposits in the middle section, which have revealed that most of the porphyry Cu-Mo deposits were likely related to the subduction of the North Tianshan Oceanic plate in the late Paleozoic [4][5][6][7][8][9][10]. However, the genesis of the porphyry Mo(Cu) deposits in the eastern section of the DTA has not been fully understood.…”

Section: Introductionmentioning

confidence: 99%

Ore Genesis and the Magmatism of the Yuhaixi Mo(Cu) Deposit in Eastern Tianshan, NW China: Constraints from Geology, Geochemistry, Zircon U-Pb and Molybdenite Re-Os Dating

Wang,

Xue,

Zhao

et al. 2023

Minerals

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The Yuhaixi Mo(Cu) deposit is a new discovery in the eastern section of the Dananhu-Tousuquan island arc, Eastern Tianshan. However, the genesis of the Yuhaixi Mo(Cu) deposit is still not fully understood. The Yuhaixi intrusion is composed of monzonitic granites, diorites, granites, and gabbro dikes, among which disseminated or veinlet Mo and Cu mineralization is mainly hosted by the monzonitic granites. The LA-ICP-MS zircon U-Pb dating yields emplacement ages of 359.4 ± 1.6 Ma for the monzonitic granite, 298.8 ± 1.8 Ma for the diorite, and 307.0 ± 2.3 Ma for the granite. The Re-Os dating of molybdenite hosted by monzonitic granite yields a well-constrained 187Re-187Os isochron age of 354.1 ± 6.8 Ma (MSWD = 1.7) with a weighted average age of 344.5 ± 3.1 Ma. The Mo mineralization is closely associated with the Yuhaixi monzonitic granite. The Yuhaixi monzonitic granite rocks are characterized by high silica (SiO2 > 70 wt.%), low MgO (0.23–0.36), Ni, Cr contents, and they are enriched in light rare earth elements (LREEs) and large ion lithophile elements (LILEs: e.g., K, Ba, Pb and Sr), and depleted in heavy rare earth elements (HREEs) and high field-strength elements (HFSEs: e.g., Nb, Ta and Ti). They are weak peraluminous and have high εHf(t) (11.37–17.59) and εNd(t) (1.36–7.75) values, and varied initial 87Sr/86Sr (0.7037–0.7128) values. The Yuhaixi post-ore granites exhibit similar geochemical and isotopic signatures to the Yuhaixi monzonitic granite. These characteristics suggest that the Yuhaixi felsic rocks are likely sourced from the partial melting of the juvenile lower crust. The Yuhaixi diorite has low SiO2, and K2O contents, relatively high Na2O, MgO (Mg# = 45–53) contents, and depletions in HFSE (e.g., Nb, Ta, and Ti). These geochemical features, coupled with isotopic data such as low initial 87Sr/86Sr (≤0.7043), high εNd(t) (2.5 to 3.0) and εHf(t) (≥11.6) values, and young Hf model ages, suggest that their parental magmas possibly originated from the partial melting of the depleted lithospheric mantle that was metasomatized by hydrous melts or fluids from the subducting oceanic plate. Integrating our new results with previous works on the Dananhu-Tousuquan island arc belt, we suggest that the Yuhaixi Mo(Cu)deposit is likely sourced from the juvenile lower crust, which was formed in an arc setting, where the bipolar subduction of the North Tianshan oceanic slab forms the Dananhu Tousuquan belt to the north and the Aqishan-Yamansu belt to the south. The eastern section of the Dananhu-Tousuquan island arc is a promising target for late Paleozoic porphyry Mo(Cu) deposits.

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The final closure time of the eastern segment of the Paleo-Asian Ocean: Insights from geochronology and geochemistry of Permian-Triassic sedimentary sequence in Wangqing, Jilin Province, China

Yin,

Liang,

Zheng

et al. 2024

Geol. Mag.

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The Central Asian Orogenic Belt is the world’s largest accretionary orogenic belt, associated with the closure of the Paleo-Asian Ocean (PAO). However, the final closure timing of the eastern PAO remains contentious. The Permian-Triassic sedimentary sequences in the Wangqing area along the Changchun-Yanji suture zone offer important clues into this final closure. New data on petrology, whole-rock geochemistry, zircon U-Pb geochronology and zircon Hf isotopes of sedimentary rocks from the Miaoling Formation and Kedao Group in Wangqing area provide new insights into the final closure of the eastern end of the PAO. The maximum deposition ages of the Miaoling Formation and Kedao Group have been constrained to the Late Permian (ca. 253 Ma) and early Middle Triassic (ca. 243 Ma), respectively. These sedimentary rocks exhibit similar geochemical characteristics, showing low textural and compositional maturities, implying short sediment transport, with all detrital zircons suggesting their origins from felsic igneous rocks. The εHf(t) values of the Miaoling Formation range from −6.09 to 12.43 and from −2.20 to 7.59 for the Kedao Group, implying these rocks originated from NE China. Considering our new data along with previously published data, we propose that a reduced remnant ocean remained along the Changchun-Yanji suture zone in the early Middle Triassic (ca. 243 Ma), suggesting the final closure of the eastern PAO likely occurred between the latest Middle Triassic and early Late Triassic.

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Late-Permian subduction-to-collision transition and closure of Paleo-Asian Ocean in eastern Central Asian Orogenic Belt: Evidence from borehole cores in the Songliao Basin, Northeast China

Cited by 8 publications

References 85 publications

Discovery of Late Permian Adakite in Eastern Central Asian Orogenic Belt: Implications for Tectonic Evolution of Paleo-Asian Ocean

Discovery of Late Permian Adakite in Eastern Central Asian Orogenic Belt: Implications for Tectonic Evolution of Paleo-Asian Ocean

Ore Genesis and the Magmatism of the Yuhaixi Mo(Cu) Deposit in Eastern Tianshan, NW China: Constraints from Geology, Geochemistry, Zircon U-Pb and Molybdenite Re-Os Dating

The final closure time of the eastern segment of the Paleo-Asian Ocean: Insights from geochronology and geochemistry of Permian-Triassic sedimentary sequence in Wangqing, Jilin Province, China

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