Phanerozoic continental growth in Central Asia

Jahn, Bor‐ming; Windley, Brian F.; Natal’in, Boris A.; Dobretsov, N. L.

doi:10.1016/s1367-9120(03)00124-x

Cited by 446 publications

(186 citation statements)

References 8 publications

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“…It is suggested that mantle-derived components or juvenile crust have played an important role in the generation of these granitoids in Central Asia Jahn et al, 2000Jahn et al, , 2004Sengör et al, 1993;Windley et al, 2007). Based on recent Hf and Nb isotopic studies, several important crustal growth events were proposed to have occurred in various parts of the CAOB during the Phanerozoic, namely at 280-306 Ma, 315-306 Ma and 345-463 Ma (Cai et al, , 2011Geng et al, 2009;Lei et al, 2011;Su et al, 2012;Sun et al, 2008;Tang et al, 2010bTang et al, , 2012aWang et al, 2011b;Xu et al, 2010;Yin et al, 2010Yin et al, , 2013Yuan et al, 2007;Zhang et al, 2012;and this study).…”

Section: Early Paleozoic Crustal Growth In the Southern Caobmentioning

confidence: 99%

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Geochemistry, zircon U–Pb ages and Lu–Hf isotopes of early Paleozoic plutons in the northwestern Chinese Tianshan: Petrogenesis and geological implications

Huang

Long

Kröner

et al. 2013

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Section: Early Paleozoic Crustal Growth In the Southern Caobmentioning

confidence: 99%

“…1). It is one of the largest Phanerozoic accretionary orogenic belts on Earth and formed by continuous accretion of island arcs, seamounts, oceanic plateau and microcontinents (Jahn et al, , 2004Sengör et al, 1993;Windley et al, 2007;Xiao et al, 2004a,b). However, the amount and regime of crustal growth generated in the CAOB are strongly debated.…”

mentioning

confidence: 99%

Geochemistry, zircon U–Pb ages and Lu–Hf isotopes of early Paleozoic plutons in the northwestern Chinese Tianshan: Petrogenesis and geological implications

Huang

Long

Kröner

et al. 2013

Lithos

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“…The Palaeozoic Tien Shan forms part of the extensive Central Asian Orogenic Belt (CAOB) (Jahn et al 2000(Jahn et al , 2004. The CAOB formed as a result of continuous subduction-accretion from the Neoproterozoic through to the Late Palaeozoic, culminating with the final amalgamation of the East European Craton in the west, the Siberian Craton in the east and the Karakum and Tarim continents to the south (Konopelko et al 2007).…”

Section: Geological Evolution Of Central Asian Basins and The Westernmentioning

confidence: 99%

“…Jahn et al 2000Jahn et al , 2004Windley et al 2007;Kröner et al 2014). The Tien Shan stretches over 2800 km along an E -W axis from Xinjiang in NW China through to the Aral Sea in Uzbekistan via Kazakhstan, Tajikistan and Kyrgyzstan, with the highest peaks exceeding 7000 m asl and the lowest point at 154 m bsl in the eastern Tien Shan.…”

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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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“…The deformation along the northern part of SATF are ductile where as the deformation along the southern part of CATF are brittle, indicating that the temperature and deformation attenuated from the north to the south. The Central Asian Orogenic Belt (CAOB) or Altaids, located between the Siberia Craton to the north and Tarim and North China cratons to the south, is one of the largest and most complex Phanerozoic accretionaryorogenic belts on Earth, with considerable juvenile crustal growth (Şengör et al, 1993;Jahn et al, 2000Jahn et al, , 2004Windley et al, 2007;Xiao et al, 2009). The Solonker suture zone lies in Inner Mongolia at the southernmost part of the CAOB (Fig.…”

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confidence: 99%

Microcontinent and Arc Collision in the Beishan Orogen: Constraint from Detrital Zircon U‐Pb and ⁴⁰Ar/³⁹Ar Geochronology: Implications for Continental Growth of the Southern Altaids

Xiao

Han

et al. 2013

Acta Geologica Sinica (Eng)

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The mechanism of continental growth of the Altaids is currently under debate between models invoking continuous subduction-accretion or punctuated accretion by closure of multiple ocean basins. We use the Yueyashan-Xichangjing ophiolite belt of the Beishan Collage (southern Altaids) to constrain the earliest oceanic crust in the southern Paleoasian Ocean. Five lithotectonic units were identified from south to north: the Huaniushan block, a sedimentary passive margin, the structurally incoherent Yueyashan-Xichangjing ophiolite complex, a coherent sedimentary package, and the Mazongshan island arc with granitic rocks. We present a structural analysis of the accretionary complex, which is composed of the incoherent ophiolitic melange and coherent sedimentary rocks, to work out the tectonic polarity. A new weighted mean 206 Pb/ 238 U age of 534.4 ± 3.4 Ma from a plagiogranite in the Yueyashan-Xichangjing ophiolite indicates that the ocean floor formed in the early Cambrian. Furthermore, we present new geochemical data to constrain the tectonic setting of the YueyashanXichangjing ophiolite, and obtained seven U-Pb ages of Sandstone and granitoid and five Ar/Ar ages. The Yueyashan-Xichangjing ophiolite was emplaced as a result of northward subduction of an oceanic plate beneath the Mazongshan island arc to the north at about 420 Ma. Together with data from the literature, our work demonstrates that there were multiple overlapping periods of accretion existed in the Palaeozoic in the northern and southern Altaids. Therefore, a model of multiple accretion by closure of several ocean basins is most viable. Key words:Beishan, Yueyashan-Xichangjing, ophiolite, Accretionary complex, Altaids. The Central Asian Orogenic Belt (CAOB) is characterized by amalgamation of various island arcs, ophiolites, accretionary prisms, oceanic plateaus and possibly some micro-continents, during the progressive subduction-accretion processes. Isotopic data suggest significant Phanerozoic crustal growth in the CAOB, whereas recycling of ancient crust is also addressed by some recent researchers. The Russian Altai is one of the key components of the CAOB, consisting of part of the Altai-Mongolian terrane (AM) in Russia, the Gorny Altai terrane (GA) and the Charysh-Terekta-Ulagan-Sayan suture (CTUSs) zone. Voluminous granitoids and their volcanic equivalents, as well as a series of Paleozoic sedimentary and meta-sedimentary rocks occur, but they have not been well investigated. Age and source nature of these rocks can provide critical constraints on the crustal growth, sedimentary basin evolution, and tectono-thermal events in Russian Altai area.In this study, two volcanic rocks and a biotite-gneiss along the CTUSs zone were collected for zircon U-Pb and Hf-isotope analysis. Zircons from the two volcanic rocks yield consistent crystallization ages of 420.9±1.4 Ma and 421.4±2.5 Ma, respectively, indicating a magmatic activity in the latest Silurian. These zircons are characterized by low initial 176 Hf/ 177 Hf isotopic ratios, with ε Hf (...

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Phanerozoic continental growth in Central Asia

Cited by 446 publications

References 8 publications

Geochemistry, zircon U–Pb ages and Lu–Hf isotopes of early Paleozoic plutons in the northwestern Chinese Tianshan: Petrogenesis and geological implications

Geochemistry, zircon U–Pb ages and Lu–Hf isotopes of early Paleozoic plutons in the northwestern Chinese Tianshan: Petrogenesis and geological implications

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

Microcontinent and Arc Collision in the Beishan Orogen: Constraint from Detrital Zircon U‐Pb and ⁴⁰Ar/³⁹Ar Geochronology: Implications for Continental Growth of the Southern Altaids

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Phanerozoic continental growth in Central Asia

Cited by 446 publications

References 8 publications

Geochemistry, zircon U–Pb ages and Lu–Hf isotopes of early Paleozoic plutons in the northwestern Chinese Tianshan: Petrogenesis and geological implications

Geochemistry, zircon U–Pb ages and Lu–Hf isotopes of early Paleozoic plutons in the northwestern Chinese Tianshan: Petrogenesis and geological implications

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

Microcontinent and Arc Collision in the Beishan Orogen: Constraint from Detrital Zircon U‐Pb and 40Ar/39Ar Geochronology: Implications for Continental Growth of the Southern Altaids

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Microcontinent and Arc Collision in the Beishan Orogen: Constraint from Detrital Zircon U‐Pb and ⁴⁰Ar/³⁹Ar Geochronology: Implications for Continental Growth of the Southern Altaids