Placing Another Piece of the Tethyan Puzzle: The First Paleozoic Paleomagnetic Data From the South Qiangtang Block and Its Paleogeographic Implications

Wei, Bitian; Cheng, Xin; Domeier, Mathew; Jiang, Nan; Wu, Yiying; Zhang, Weijie; Wu, Ke; Wang, Baofeng; Xu, Pengxiang; Xing, Longyun; Zhang, Dongmeng; Li, Teng; Deng, Xiaohong; Liu, Feifan; Zhou, Yanan; Wu, Hanning

doi:10.1029/2022tc007355

Cited by 14 publications

(11 citation statements)

References 93 publications

(106 reference statements)

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“…The Meso‐Tethys opened between the Cimmeride terranes and Gondwana in the Permian; it closed in the Late Jurassic‐Cretaceous (Y. Ma et al., 2018; Metcalfe, 2021; Wei et al., 2022). The Cimmeride terranes included the South Qiangtang and Sibumasu terranes in the east, and Iran, Afghanistan, and other terranes in the west (X. D. Wang et al., 2021; Wei et al., 2022) (Figure 1a). They accreted onto the southern margin of Asia in the Triassic, marking the closure of the Paleo‐Tethys (Metcalfe, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…This slivers' evolution involves their breakup from Gondwana and the subsequent northward motion until the final accretion to Asia. The Meso‐Tethys opened between the Cimmeride terranes and Gondwana in the Permian; it closed in the Late Jurassic‐Cretaceous (Y. Ma et al., 2018; Metcalfe, 2021; Wei et al., 2022). The Cimmeride terranes included the South Qiangtang and Sibumasu terranes in the east, and Iran, Afghanistan, and other terranes in the west (X. D. Wang et al., 2021; Wei et al., 2022) (Figure 1a).…”

Section: Introductionmentioning

confidence: 99%

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Jurassic Paleomagnetism of the Lhasa Terrane—Implications for Tethys Evolution and True Polar Wander

Wang

et al. 2022

JGR Solid Earth

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The drift history of the Lhasa terrane from Gondwana to Asia plays a crucial role in understanding the Tethys evolution and true polar wander (TPW). However, few reliable paleomagnetic results from Jurassic strata are currently available for reconstructing its northward journey. We performed a combined paleomagnetic and geochronological study on Bima Formation strata in the Xigaze area. Combined with previous results from the Sangri area, our results reveal a paleolatitude of 8 ± 4°S at ∼180 Ma for the reference point (29.3°N, 90.3°E). Along with other paleomagnetic results from the Triassic to Cretaceous, our new results suggest that the Lhasa terrane motion accelerated from ∼2 cm/yr during ∼220–180 Ma to ∼17 cm/yr during ∼180–170 Ma. Paleolatitude information of the North Qiangtang terrane and Tethyan Himalaya is calculated from paleopoles that meet five criteria, which include (a) structural control, (b) well‐determined rock age, (c) stepwise demagnetizations, (d) a minimum of 25 specimens or 8 sites are contained, and (e) robust field or reversal tests are provided. Both terranes also show significant acceleration during their northward motion, which may be related to oceanic slab subduction. Thus, all Gondwana‐derived microcontinents seem to share a significant acceleration during their northward motion. In addition, recent paleomagnetic results from volcanic rocks dated at ∼155 Ma subdivide the overall northward motion during ∼170–130 Ma into two stages, which include a southward drift during ∼170–155 Ma followed by northward motion during ∼155–130 Ma. These results support the fast Late Jurassic TPW during a ∼10 Myr time span.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Jurassic Paleomagnetism of the Lhasa Terrane—Implications for Tethys Evolution and True Polar Wander

Wang

et al. 2022

JGR Solid Earth

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“…These palaeobiogeographic data indicate that the South Qiangtang, Baoshan and Sibumasu terranes drifted northward during the Kungurian when the Early Permian rifting event happened, and at least in the Cisuralian to Guadalupian transition ( ca 273 Ma), the Meso‐Tethys Ocean south of the South Qiangtang, Baoshan and Sibuma terranes existed (Zhang et al ., 2019; Xu et al ., 2022b). Palaeomagnetic data shows that the South Qiangtang Terrane drifted northward during the Early Permian, and the Meso‐Tethys Ocean south of the South Qiangtang Terrane had an ocean basin with a width of 1000 to 2000 km during the Middle Permian (Wei et al ., 2022). The ages of the oldest ophiolites and intraplate ocean islands in the BNSZ are Late Permian–Early Triassic (260 to 250 Ma; Huang et al ., 2012; Wang et al ., 2015; Zhang et al ., 2016, 2017; Fan et al ., 2018), indicating that the development of the Meso‐Tethys oceanic crust occurred in the Late Permian.…”

Section: Discussionmentioning

confidence: 99%

“…2 Palaeomagnetic data shows that the South Qiangtang Terrane drifted northward during the Early Permian, and the Meso-Tethys Ocean south of the South Qiangtang Terrane had an ocean basin with a width of 1000 to 2000 km during the Middle Permian (Wei et al, 2022).…”

Section: Approximately 273 Ma Change In Depositional Setting From Tec...mentioning

confidence: 99%

Tracing the sedimentary response to the rifting and opening of the Meso‐Tethys Ocean

et al. 2023

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Knowledge of the rifting and opening process of the Meso‐Tethys Ocean is important for understanding the evolution of the Tethys tectonic domain and for an in‐depth understanding of Tethys dynamics. Sedimentary rocks are faithful recorders of surface expressions of tectonic events and are thus expected to have recorded the rifting and opening of the Meso‐Tethys Ocean. This study presents petrography, sedimentology, zircon U–Pb geochronological data and Hf isotope data for the Carboniferous–Permian Shiquanhe stratigraphic succession in the Lhasa Terrane of the Tibetan Plateau. The data indicate that the 300 to 273 Ma Lagar and Angjie formations in the lower section of the Carboniferous–Permian Shiquanhe succession were deposited in the stable passive margin of northern Gondwana with sediment sources in Gondwanaland. However, the 273 to 252 Ma Xiala Formation in the upper section of the Carboniferous–Permian Shiquanhe succession was deposited in a tectonically active setting characterized by intense magmatic activity. Considering the transition from the Lagar and Angjie formations to the Xiala Formation, a significant change in depositional setting from tectonically stable to tectonically active occurred at ca 273 Ma. Similar Early–Middle Permian changes in depositional setting have also been identified in the South Qiangtang, Baoshan and Oman regions in the Tethyan tectonic domain. These widespread changes in depositional setting, together with Early–Middle Permian tectonic uplift and episodes of subsidence, as well as rift‐related magmatism in the South Qiangtang, Baoshan, Himalayan, Zagros, Oman and Turkey regions once located in northern Gondwana, constitute a complete record of continental rifting–ocean opening associated with the diachronous opening of the Meso‐Tethys Ocean during the Early–Middle Permian.

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“…(2023); see Table for detailed paleomagnetic data). (c) Paleogeographic reconstructions of the SQB during the Early Permian to Late Triassic (modified after Huang et al., 2018; Yan et al., 2019; Wei et al., 2022).…”

Section: Discussionmentioning

confidence: 99%

Paleomagnetism of Late Triassic Volcanic Rocks From the South Qiangtang Block, Tibet: Constraints on Longmuco‐Shuanghu Ocean Closure in the Paleo‐Tethys Realm

Wei,

Cheng,

Domeier

et al. 2023

Geophysical Research Letters

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The South Qiangtang block of the Qinghai‐Tibet Plateau represents an area critical to understanding the late Paleozoic and early Mesozoic history of the Tethyan realm, but its drift history remains poorly constrained. Here we report a new quantitative paleogeographic constraint for the South Qiangtang block from a paleomagnetic study of Late Triassic volcanic rocks of the Xiaoqiebao Formation. A characteristic remanent magnetization isolated from 25 sites passes both fold‐ and reversal tests, and likely represents a primary magnetization. On the basis of these data, we estimate that the South Qiangtang block occupied a paleolatitude of 30.1 ± 4.6°N at ca. 222 Ma. When combined with existing paleomagnetic constraints, these new results indicate that the South Qiangtang block (and other “Cimmerian” blocks) moved rapidly northward (in true latitude) between the middle Permian and Late Triassic. Our new data further suggest that the southern branch of the Paleo‐Tethys (Longmuco‐Shuanghu Ocean) likely closed by the mid‐Late Triassic.

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Placing Another Piece of the Tethyan Puzzle: The First Paleozoic Paleomagnetic Data From the South Qiangtang Block and Its Paleogeographic Implications

Cited by 14 publications

References 93 publications

Jurassic Paleomagnetism of the Lhasa Terrane—Implications for Tethys Evolution and True Polar Wander

Jurassic Paleomagnetism of the Lhasa Terrane—Implications for Tethys Evolution and True Polar Wander

Tracing the sedimentary response to the rifting and opening of the Meso‐Tethys Ocean

Paleomagnetism of Late Triassic Volcanic Rocks From the South Qiangtang Block, Tibet: Constraints on Longmuco‐Shuanghu Ocean Closure in the Paleo‐Tethys Realm

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