Metamorphic P–T–water conditions of the Yushugou granulites from the southeastern Tianshan orogen: Implications for Paleozoic accretionary orogeny

Zhang, Li; Zhang, Junfeng; Zhang, Jin

doi:10.1016/j.gr.2014.12.009

Cited by 14 publications

(6 citation statements)

References 183 publications

(230 reference statements)

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“…394 Ma Yushugou granulite and extensive ca. 400 Ma migmatization in the Gangou area (P. F. Li et al., 2020; L. Zhang et al., 2016). Taken together, the D1 event in the study area seems to be a response to a generalized extensional regime that affected not only the NE Tarim but also its peripheral units during Silurian‐early Devonian.…”

Section: Discussionmentioning

confidence: 99%

“…Moreover, the eastern STS preserves granulites and migmatites attributed to a ca. 390 Ma high‐temperature (HT) metamorphic event (P. F. Li et al., 2020; L. J. Mao et al., 2015; Shu et al., 2004; X. S. Wang et al., 2014b; L. Zhang et al., 2016), whereas the western part preserves ca. 320 Ma eclogites and blueschists suggesting (ultra)high‐pressure ((U)HP) subduction related event (J. Gao et al., 1995; Lin et al., 2009; Lü & Zhang, 2012; Mühlberg et al., 2016; Tagiri et al., 1995; L. F. Zhang et al., 2002).…”

Section: Regional Geological Backgroundmentioning

confidence: 99%

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Silurian‐Devonian Lithospheric Thinning and Thermally Softening Along the Northern Margin of the Tarim Craton: Geological Mapping, Petro‐Structural Analysis and Geochronological Constraints

Ning,

Jiang,

Schulmann

et al. 2023

Tectonics

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While the western part of northern Tarim Craton has long been considered as a Paleozoic passive margin, a pronounced Silurian‐Devonian magmatism developed on eastern part of this margin may indicate different but active margin setting. In this contribution, detailed structural mapping, petro‐structural analysis, and geochronological investigations were conducted in the Korla area, eastern part of northern Tarim Craton. Three main generations of fabrics were recognized. The earliest pervasive fabric is an originally sub‐horizontal metamorphic S1 foliation that is in part associated with migmatization characterized by high temperature/low pressure metamorphic mineral assemblages, interpreted as reflecting crustal extension. S1 foliation was affected by D2 contraction forming regional‐scale F2 upright folds associated with sub‐vertical axial planar foliation S2. D3 is marked by development of NW‐SE oriented dextral fault, asymmetric mega‐folding of S2 and spaced NW‐SE‐striking S3 foliation, likely in response to dextral transpression. Geochronological data indicate that D1 extension occurred from ca. 420 Ma to 410 Ma, D2 contraction started around 410 Ma and lasted till 400 Ma or later, and D3 transpression was ongoing around ∼370 Ma. Integrated with regional data, an updated geodynamic model is proposed by interpreting the Central Tianshan, South Tianshan and NE Tarim Craton as an early Paleozoic supra‐subduction system. We suggest that the Silurian‐Devonian event reflects thermal softening and horizontal stretching of the supra‐subduction crust, resulting in drifting of the Central Tianshan continental arc from the proto Tarim Craton in association with opening of the South Tianshan back‐arc basin in‐between.This article is protected by copyright. All rights reserved.

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Section: Discussionmentioning

confidence: 99%

Section: Regional Geological Backgroundmentioning

confidence: 99%

Silurian‐Devonian Lithospheric Thinning and Thermally Softening Along the Northern Margin of the Tarim Craton: Geological Mapping, Petro‐Structural Analysis and Geochronological Constraints

Ning,

Jiang,

Schulmann

et al. 2023

Tectonics

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“…398–340 Ma, and retrograde amphibolite‐facies metamorphism at ca. 332–322 Ma during the northward subduction of the South Tianshan Ocean (Figure 10d; Jian et al., 2013; Yang et al., 2011; L. Zhang et al., 2016, 2018; Zhang & Jin, 2016). The ca.…”

Section: Discussionmentioning

confidence: 99%

“…330 and 305 Ma via multiple dating methods, including zircon/rutile U–Pb dating, and whole‐rock Rb–Sr, Sm–Nd, and Lu–Hf isochrons (Klemd et al., 2005, 2011; Li, Gao, & Wang, 2016; Su et al., 2010; Tan et al., 2019). In the Kumishi area to the east, the Yushugou metamorphic terrane mainly contains mafic and felsic granulites, and minor amphibolites that occur as thrust sheets intercalated with serpentinized peridotites of an ophiolitic mélange (Jian et al., 2013; Yang et al., 2011; Zhang & Jin, 2016; L. Zhang et al., 2016, 2018). The Yushugou granulites recorded multistage metamorphism between ca.…”

Section: Geological Backgroundmentioning

confidence: 99%

“…The Yushugou granulites recorded multistage metamorphism between ca. 398 and 322 Ma under high‐pressure and high‐temperature conditions related to the northward subduction of the South Tianshan Ocean (Jian et al., 2013; Yang et al., 2011; L. Zhang et al., 2016, 2018; Zhang & Jin, 2016). The Guluogou ophiolite was reported to have formed at ca.…”

Section: Geological Backgroundmentioning

confidence: 99%

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Paleozoic Subduction‐Accretion in the Southern Central Asian Orogenic Belt: Insights From the Wuwamen Accretionary Complex of the Chinese South Tianshan

Wang

Klemd

et al. 2022

Tectonics

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Accretionary orogens that formed at sites of ongoing oceanic subduction along convergent margins and ultimately evolved into a collisional phase subsequent to oceanic closure are often accompanied by considerable continental growth (e.g., Aitchison & Buckman, 2012;Cawood et al., 2009). Accretionary complexes (or accretionary prisms/wedges and subduction-accretion complexes) are key elements of accretionary and collisional orogens and, if present, are commonly regarded as excellent archive of subduction-accretion and collision events in ancient orogens (Cawood et al., 2009;Kusky et al., 2020;Žák et al., 2020). The Central Asian Orogenic Belt (CAOB; Figure 1a) in northeast Eurasia is a typical accretionary orogen formed by multiple accretion of microcontinents, island arcs, oceanic plateaus, and accretionary complexes in the Paleo-Asian Ocean (e.g., Buckman

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Rheology of continental lithosphere and seismic anisotropy

Sun,

Dong,

et al. 2023

Sci. China Earth Sci.

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Metamorphic P–T–water conditions of the Yushugou granulites from the southeastern Tianshan orogen: Implications for Paleozoic accretionary orogeny

Cited by 14 publications

References 183 publications

Silurian‐Devonian Lithospheric Thinning and Thermally Softening Along the Northern Margin of the Tarim Craton: Geological Mapping, Petro‐Structural Analysis and Geochronological Constraints

Silurian‐Devonian Lithospheric Thinning and Thermally Softening Along the Northern Margin of the Tarim Craton: Geological Mapping, Petro‐Structural Analysis and Geochronological Constraints

Paleozoic Subduction‐Accretion in the Southern Central Asian Orogenic Belt: Insights From the Wuwamen Accretionary Complex of the Chinese South Tianshan

Rheology of continental lithosphere and seismic anisotropy

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