Mineral ages and P-T conditions of Late Paleozoic high-pressure eclogite and provenance of melange sediments from Atbashi in the south Tianshan orogen of Kyrgyzstan

Hegner, E.; Klemd, Reiner; Kröner, Alfred; Corsini, Michel; Алексеев, Д. В.; Iaccheri, Linda M.; Zack, Thomas; Dulski, Peter; Xia, Xiaoping; Windley, Brian F.

doi:10.2475/09.2010.07

Cited by 189 publications

(106 citation statements)

References 82 publications

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“…Rb/Sr and 40 Ar/ 39 Ar dating of retrograde eclogites and blueschists indicates that the (U)HP metamorphic rocks experienced exhumation mainly between 320 Ma and 310 Ma ( Fig. 13; Klemd et al, 2005;Hegner et al, 2010;Xia et al, 2016). These ages for the formation and exhumation of metamorphic rocks indicate that the collision between the Tarim craton and Yili-Central Tianshan block mostly took place during the late Carboniferous.…”

Section: Age Of Collisionmentioning

confidence: 95%

“…. A late Carboniferous collision has been supported by recent age data from postcollision granites (300-270 Ma; Biske and Seltmann, 2010;Gao et al, 2011;Han et al, 2011) and high-to ultrahighpressure ([U]HP) metamorphic rocks (320-310 Ma;Hegner et al, 2010;Su et al, 2010;Klemd et al, 2011; in the South Tianshan orogenic belt. However, some researchers place the major collisional event in the Late Permian to Middle Triassic, based on the ages of two Late Permian radiolarian specimens from ophiolitic mélange (Li et al, 2005) and Triassic zircon U-Pb ages from eclogites (Zhang et al, 2007).…”

Section: Introductionmentioning

confidence: 93%

“…13;Hegner et al, 2010;Su et al, 2010;Klemd et al, 2011;. Rb/Sr and 40 Ar/ 39 Ar dating of retrograde eclogites and blueschists indicates that the (U)HP metamorphic rocks experienced exhumation mainly between 320 Ma and 310 Ma ( Fig.…”

Section: Age Of Collisionmentioning

confidence: 99%

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Provenance of late Paleozoic strata in the Yili Basin: Implications for tectonic evolution of the South Tianshan orogenic belt

Huang

Cawood

et al. 2017

GSA Bulletin

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The Yili Basin in NW China preserves a late Paleozoic volcano-sedimentary succession, the provenance of which helps to constrain the tectonic evolution of the South Tianshan orogenic belt. U-Pb ages and trace-element and Hf isotopic compositions of detrital zircons from the Late Devonian to earliest early Carboniferous strata in the Yili Basin suggest that the unit contains detritus mainly derived from basement rocks and contemporaneous arc-related volcanic rocks.

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Section: Age Of Collisionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 93%

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Provenance of late Paleozoic strata in the Yili Basin: Implications for tectonic evolution of the South Tianshan orogenic belt

Huang

Cawood

et al. 2017

GSA Bulletin

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“…The Sm-Nd isotope compositions were determined in the isotope laboratory at Universität München (Table 3) according to the procedures outlined in Hegner et al (2010). The 143 Nd/ 144 Nd ratios were determined with a MAT 261 with Spectromat upgraded electronics and control software using a dynamic 2-line triplemass ion collection method and monitoring 147 Sm.…”

Section: Methodsmentioning

confidence: 99%

Geochemical and Sm–Nd isotopic characteristics of the Late Archaean-Palaeoproterozoic Dhanjori and Chaibasa metasedimentary rocks, Singhbhum craton, E. India: Implications for provenance, and contemporary basin tectonics

Mazumder

Ohta

et al. 2015

Precambrian Research

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a b s t r a c tIn significant contrast to other cratonic blocks of India, the Singhbhum cratonic successions record continuous depositional record from the Palaeoarchaean to Mesoproterozoic. Although the sedimentary facies characteristics and mode of stratigraphic sequence building of the Dhanjori and Chaibasa Formations are well known, sedimentary geochemistry, provenance and tectonic milieu of deposition of these two formations are hitherto unknown. The current manuscript presents geochemical and Sm-Nd isotopic data from the Dhanjori and Chaibasa Formations for the first time and combine previous sedimentological data with the goal to expand the framework for understanding the depositional and tectonic setting of these two formations. The Sm-Nd isotopic data for the Chaibasa clastics is unambiguous with respect to provenance. Average ε Nd (t = 2.2 Ga) = −0.8 ± 1.0 and average Nd model age (TDM) = 2.51 ± 0.08 Ga with average 147 Sm/ 144 Nd ratios = 0.1114 ± 0.0041 for phyllites and quartzites indicate an extremely homogeneous source signature consistent with a late Archaean "juvenile" crustal provenance, possibly a dominantly upper crustal provenance. The Sm-Nd isotopic data from the older Dhanjori Formation also indicate broadly similar provenance as comparable lithologies in the younger Chaibasa Formation. Our Sm-Nd isotopic data is entirely consistent with the previous sedimentological data and confirms a terrestrial, riftdominated tectonic setting for the Dhanjori Formation (proximal sources, poorly mixed provenance) and a marginal marine to offshore setting for the more homogeneous Nd isotopic signature of the Chaibasa Formation (distal sources, well mixed provenance).

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“…The direction of subduction vergence of the Central Tien Shan Ocean is uncertain, and both northerly directed (e.g. Windley et al 1990;Allen et al 1992;Xiao et al 2004;Hegner et al 2010) and southerly directed (e.g. Charvet et al 2007Charvet et al , 2011Lin et al 2009;Ma et al 2014) models have been proposed.…”

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confidence: 99%

Geological evolution of Central Asian Basins and the western Tien Shan Range

Brunet

Sobel

McCann³

2017

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The geological evolution of Central Asia commenced with the evolution of a complex Precambrian–Palaeozoic orogen. Cimmerian blocks were then accreted to the southern margin during the Mesozoic, leading to tectonic reactivation of older structures and discrete episodes of basin formation. The Indian and Arabian blocks collided with Asia during the Cenozoic, leading to renewed structural reactivation, intracontinental deformation and basin development. This complex evolution resulted in the present-day setting of an elongated Tien Shan range flanked by large Mesozoic–Cenozoic sedimentary basins with smaller intramontane basins distributed within the range. The aim of this volume is to present multidisciplinary results and reviews from research groups in Europe and Central Asia that focus on the western part of the Tien Shan and some of the large sedimentary basins in that area. These works elucidate the Late Palaeozoic–Cenozoic tectono-sedimentary evolution of the area. Emphasis is placed on the collision of terranes and/or continents and the ensuing fault reactivation; the impact of changes in climate on the sedimentation is also examined.

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Mineral ages and P-T conditions of Late Paleozoic high-pressure eclogite and provenance of melange sediments from Atbashi in the south Tianshan orogen of Kyrgyzstan

Cited by 189 publications

References 82 publications

Provenance of late Paleozoic strata in the Yili Basin: Implications for tectonic evolution of the South Tianshan orogenic belt

Provenance of late Paleozoic strata in the Yili Basin: Implications for tectonic evolution of the South Tianshan orogenic belt

Geochemical and Sm–Nd isotopic characteristics of the Late Archaean-Palaeoproterozoic Dhanjori and Chaibasa metasedimentary rocks, Singhbhum craton, E. India: Implications for provenance, and contemporary basin tectonics

Geological evolution of Central Asian Basins and the western Tien Shan Range

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