SHRIMP U–Pb and Ar–Ar geochronology of major porphyry and skarn Cu deposits in the Balkhash Metallogenic Belt, Central Asia, and geological implications

Chen, Xuanhua; Seitmuratova, Eleonora; Wang, Zhihong; Chen, Zhengle; Han, Shuqin; Li, Yong; Yi, Yang; Ye, Baoying; Shi, Wei

doi:10.1016/j.jseaes.2013.06.011

Cited by 51 publications

(13 citation statements)

References 30 publications

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“…range (De Grave et al, 2013) of $300°C to $150°C. The cooling occurred from $292 to $278 Ma, which is similar to the time range $307 to $257 Ma for cooling of the porphyry Cu-Mo deposits in the BMB (Chen et al, 2014). 40 Ar/ 39 Ar and AFT dating combined with thermal history modeling of granitoids from the East Kounrad, Akshatau, and Zhanet deposits (Fig.…”

Section: Cooling and Exhumation Of The W-mo Depositssupporting

confidence: 63%

“…All W-Mo deposits in the western part of the BMB are somewhat younger than the skarn-type, Cu-polymetallic deposits formed at $335 Ma (the Sayak ore-field) and the porphyry CuMo deposits formed between $327 Ma and $316 Ma (Kounrad, Aktogai, Borly) (Chen et al, 2010(Chen et al, , 2014. These dates indicate that the BMB was a region of extensive metallogeny in the Late Paleozoic.…”

Section: Post-collisional Magmatism and Mineralization Of W-mo Deposimentioning

confidence: 88%

“…1), including the Kounrad-Borly, the Central Balkhash (also named ''the Central Kazakhstan''), the South Aktogai (also named ''the Main Junggar''), and the Chingiz-Junggar faults (Yakubchuk, 2004 Chen et al (2014). The fault pattern is modified from Ren et al (1999) and Li et al (2012).…”

Section: Geological Setting Of the Balkhash Metallogenic Beltmentioning

confidence: 99%

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SHRIMP U–Pb, Ar–Ar and fission-track geochronology of W–Mo deposits in the Balkhash Metallogenic Belt (Kazakhstan), Central Asia, and the geological implications

Chen

Wang

Chen

et al. 2015

Journal of Asian Earth Sciences

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Section: Cooling and Exhumation Of The W-mo Depositssupporting

confidence: 63%

Section: Post-collisional Magmatism and Mineralization Of W-mo Deposimentioning

confidence: 88%

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SHRIMP U–Pb, Ar–Ar and fission-track geochronology of W–Mo deposits in the Balkhash Metallogenic Belt (Kazakhstan), Central Asia, and the geological implications

Chen

Wang

Chen

et al. 2015

Journal of Asian Earth Sciences

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“…A Carboniferous (328-312 Ma) porphyry Cu metallogenic event is related to calc-alkaline arc magmatism whilst early Permian (306-289 Ma) greisen W-Mo metallogenic deposits are associated with alkaline magmatism in a collisional to post-collisional context (Shen et al, 2013a). Also Chen et al (2010Chen et al ( , 2014 confirmed that late Paleozoic felsic magmatism occurred mainly during the late Carboniferous to earliest early Permian in that region. Generally, Carboniferous arc magmatism can be related to the subduction of the Junggar-Balkhash Ocean, which resulted in the formation of the Balkhash-Ili (BY) magmatic belt in SE Kazakhstan (Heinhorst et al, 2000;Korobkin and Buslov, 2011;Levashova et al, 2012;Xiao et al, 2010) (Fig.…”

Section: Zircon U-pb Datamentioning

confidence: 68%

Late-Paleozoic emplacement and Meso-Cenozoic reactivation of the southern Kazakhstan granitoid basement

et al. 2015

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International audienceThe Ili-Balkhash Basin in southeastern Kazakhstan is located at the junction of the actively deforming mountain ranges of western Junggar and the Tien Shan, and is therefore part of the southwestern Central Asian Orogenic Belt. The basement of the Ili-Balkhash area consists of an assemblage of mainly Precambrian microcontinental fragments, magmatic arcs and accretionary complexes. Eight magmatic basement samples (granitoids and tuffs) from the Ili-Balkhash area were dated with zircon U-Pb LA-ICP-MS and yield Carboniferous to late Permian (~ 350-260 Ma) crystallization ages. These ages are interpreted as reflecting the transition from subduction to (post-) collisional magmatism, related to the closure of the Junggar-Balkhash Ocean during the Carboniferous – early Permian and hence, to the final late Paleozoic accretion history of the ancestral Central Asian Orogenic Belt. Apatite fission track (AFT) dating of 14 basement samples (gneiss, granitoids and volcanic tuffs) mainly provides Cretaceous cooling ages. Thermal history modeling based on the AFT data reveals that several intracontinental tectonic reactivation episodes affected the studied basement during the late Mesozoic and Cenozoic. Late Mesozoic reactivation and associated basement exhumation is interpreted as distant effects of the Cimmerian collisions at the southern Eurasian margin and possibly of the Mongol-Okhotsk Orogeny in SE Siberia during the Jurassic – Cretaceous. Following tectonic stability during the Palaeogene, inherited basement structures were reactivated during the Neogene (constrained by Miocene AFT ages of ~ 17–10 Ma). This late Cenozoic reactivation is interpreted as the far-field response of the India-Eurasia collision and reflects the onset of modern mountain building and denudation in southeast Kazakhstan, which seems to be at least partially controlled by the inherited basement architecture

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“…Gaspar et al 2008;Li et al 2010;Xie et al 2011;Shen et al 2013;Chen et al 2014). Reviews of skarn deposits on a global scale have been published by Einaudi et al (1981), Burt (1982), Jamtveit et al (1993), Nicolescu et al (1998), Meinert (1998), Cepedal et al (2000), Meinert et al (2003), Baker et al (2004), Levresse et al (2004) and Meinert et al (2005).…”

Section: Introductionmentioning

confidence: 99%

Geochronology and petrology of pyroxene-garnet skarns (eastern Bohemian Massif): implications for the source and evolution of the Variscan continental crust

Pertoldová¹,

Kosulicova²,

Verner³

et al. 2014

J. Geosci.

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Zircon ages (U-Pb, LA-ICP-MS) obtained from skarns in the Kutná Hora and Svratka units and in the Moldanubian Zone (Bohemian Massif) show significant variations between the lithotectonic units as well as among samples from individual localities. The ages fall between 310 Ma and 3.1 Ga. We suggest that such large spread is a result of both different zircon clastic grain sources and subsequent metamorphic histories. The oldest Neoarchaean to Neoproterozoic ages are interpreted as detrital zircon grains from pre-Cadomian basement. Pronounced age maxima between 600 and 520 Ma (late Neoproterozoic to early Cambrian) were found in skarn samples from the Moldanubian Zone, Svratka and Kutná Hora units. We interpret these as maximum ages of skarn precursor deposition. Apparent Cambrian-OrdovicianSilurian to early Devonian zircon ages were obtained from non-mineralized samples of the Moldanubian Zone and also in the Kutná Hora Unit. This wide temporal interval could reflect maximum ages of skarn precursors related to disintegration of abundant early Palaeozoic magmatic rocks, provided the zircons were not modified by later metamorphism or fluid circulation. The early Carboniferous ages are interpreted to result from strong Variscan HT metamorphism and subsequent circulation of post-metamorphic fluids. Zircons of this age are dominant in skarns with massive magnetite mineralization, while the non-mineralized samples preserve the older ages.

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SHRIMP U–Pb and Ar–Ar geochronology of major porphyry and skarn Cu deposits in the Balkhash Metallogenic Belt, Central Asia, and geological implications

Cited by 51 publications

References 30 publications

SHRIMP U–Pb, Ar–Ar and fission-track geochronology of W–Mo deposits in the Balkhash Metallogenic Belt (Kazakhstan), Central Asia, and the geological implications

SHRIMP U–Pb, Ar–Ar and fission-track geochronology of W–Mo deposits in the Balkhash Metallogenic Belt (Kazakhstan), Central Asia, and the geological implications

Late-Paleozoic emplacement and Meso-Cenozoic reactivation of the southern Kazakhstan granitoid basement

Geochronology and petrology of pyroxene-garnet skarns (eastern Bohemian Massif): implications for the source and evolution of the Variscan continental crust

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