Age and evolution of late Mesozoic metamorphic core complexes in southern Siberia and northern Mongolia

Donskaya, T. V.; Windley, Brian F.; Мазукабзов, А. М.; Kröner, Alfred; Sklyarov, E. V.; Гладкочуб, Д.П.; Пономарчук, В. А.; Badarch, Gombosuren; Reichow, Marc K.; Hegner, E.

doi:10.1144/0016-76492006-162

Cited by 140 publications

(98 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Alkaline granitic intrusions, which intruded between 125 and 200 Ma (Kovalenko et al, 1999), and postcollisional metamorphic core complexes that formed between 240 and 150 Ma, occur widely in the Transbaikalia region (Zorin et al, 1997;Donskaya et al, 2008). These granites formed from remelting of Precambrian, Caledonian and Hercynian basement and inherited the isotopic characteristics of the protoliths (Kovalenko et al, 1999).…”

Section: Mesozoic and Cenozoic Eventsmentioning

confidence: 99%

Growth rate of the preserved continental crust: II. Constraints from Hf and O isotopes in detrital zircons from Greater Russian Rivers

Wang

Campbell

Stepanov

et al. 2011

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

show abstract

Section: Mesozoic and Cenozoic Eventsmentioning

confidence: 99%

Growth rate of the preserved continental crust: II. Constraints from Hf and O isotopes in detrital zircons from Greater Russian Rivers

Wang

Campbell

Stepanov

et al. 2011

Geochimica et Cosmochimica Acta

View full text Add to dashboard Cite

show abstract

“…1; e.g. Davis et al, 1996;Sklyarov et al, 1994;Webb et al, 1999;Darby et al, 2004;Liu et al, 2005;Lin and Wang, 2006;Donskaya et al, 2008;Daoudene et al, 2009;Charles et al, 2011aCharles et al, , 2012. While structure and kinematics of these MCCs are well-studied, the timing and duration of their development are often poorly constrained ( Fig.…”

Section: Introductionmentioning

confidence: 99%

Timing, duration and role of magmatism in wide rift systems: Insights from the Jiaodong Peninsula (China, East Asia)

et al. 2013

View full text Add to dashboard Cite

In East Asia, widespread extensional sedimentary basins together with the close association of Metamorphic Core Complexes and magmatism are prominent features of the large-scale wide rift system developed during late Mesozoic times. This region thus appears as a proper place to study continental extension as well as questions about the link between continental extension and magmatism. This paper primarily provides pioneer exhumation time-constraints on the Linglong MCC (Jiaodong Peninsula) including cooling and deformation ages. MCC cooling at mid-crustal levels occurred at ca. 143 Ma. Besides, last ductile deformation occurred at ca. 134 Ma while final exhumation stages, under brittle 2 conditions, occurred as late as ca. 128 Ma. Continuous crustal stretching were then recorded by the emplacement of a synkinematic pluton in the upper crust at ca. 128 Ma that cooled fast below an intracrustal shear zone crossing the ductile-brittle transition at ca. 123 Ma. The ca. 120-118 Ma age cluster is ascribed to the fast cooling of undeformed plutons marking the end of extension that lasted, in the area, over a minimum period of ca. 30 My. Combining other MCC exhumation constraints and the onset of subsidence in the sedimentary basins, total duration of late Mesozoic extension in East Asia could be estimated at ca. 60 My, related with a rather long process for extension from 160 to at least 100 Ma. East Asian continental extension is heterogeneously distributed in space and time as revealed by fundamental differences between two end-member classes of migmatite-cored MCC already described in other wide rift systems. Extension seems to have first favoured partial melting which subsequently, in turn, maintained continental extension.

show abstract

“…Recently, several Metamorphic Core Complexes (MCCs) have been described in East Asia from Transbaikalia to the Jiaodong Peninsula, 2000 km apart (e.g. Sklyarov et al, 1994;Davis et al, 1996;Webb et al, 1999;Darby et al, 2004;Liu et al, 2005;Lin and Wang, 2006;Donskaya et al, 2008;Daoudene et al, 2009;Charles et al, 2011a). However, while most of the East Asian MCCs exhibit partial melting, with occurrence of migmatites and granitic plutons (Liu et al, 2005;Daoudene et al, 2009Daoudene et al, , 2011Charles et al, 2011a), the influence of crustal melting and/or plutonism on tectonic evolution during late Mesozoic remains rarely discussed.…”

Section: Introductionmentioning

confidence: 99%

Metamorphic Core Complex dynamics and structural development: Field evidences from the Liaodong Peninsula (China, East Asia)

Charles¹,

Gumiaux²,

Augier³

et al. 2012

Tectonophysics

View full text Add to dashboard Cite

International audienceMetamorphic Core Complexes (MCC) constitute remarkable features within wide rifts. Based on analogue and numerical modelling, MCC dynamics and structural development are mainly controlled by first geothermal gradient, second the compositional layering, and after the strain rate and partial melting. In the Late Mesozoic, continental extension occurred in East Asia leading to the development of MCC, magmatism and extensional sedimentary basins. Based on an integrated study (i.e. structural and finite strain analysis, petrofabrics, Anisotropy of Magnetic Susceptibility (AMS) and U/Pb on zircon dating), this paper aims at constraining the tectonic evolution and deformation mechanisms in the South Liaodong Peninsula (NE China). The Gudaoling massif is identified as a "migmatitic" MCC developed from Upper Jurassic (ca. 157-154 Ma) to Early Cretaceous (ca. 128-113 Ma). Intrusion of the Yinmawanshan synkinematic pluton (Early Cretaceous) to the south of the dome marks out the final stages of shearing along the Gudaoling detachment zone and of exhumation of the MCC into the upper crust. The Gudaoling MCC and the Yinmawanshan pluton stay in line with the coeval South Liaodong MCC, to the south, all making a ~ 140x30km wide extensional band formed during a regional E-W to NW-SE crustal stretching. The area shows a bi-phased development with a "slow" and a "fast" stage which correspond to (1) crustal necking and (2) dome amplification/exhumation stages according to published thermo-mechanical modelling results. Finally, the Gudaoling MCC lower unit almost exclusively displays migmatites and anatectic granitoids of Late Jurassic and Early Cretaceous, respectively. Occurrence of partial melting during earlier stages of extension seems controlling the initiation of MCC (as a soft anomaly within lower crust). In East Asia, a regional-scale thermal event, during Jurassic-Cretaceous times, may have significantly reduced the bulk lithosphere strength and locally induced partial melting, emphasizing pervasive deformations and development of a wide rift system

show abstract

Age and evolution of late Mesozoic metamorphic core complexes in southern Siberia and northern Mongolia

Cited by 140 publications

References 43 publications

Growth rate of the preserved continental crust: II. Constraints from Hf and O isotopes in detrital zircons from Greater Russian Rivers

Growth rate of the preserved continental crust: II. Constraints from Hf and O isotopes in detrital zircons from Greater Russian Rivers

Timing, duration and role of magmatism in wide rift systems: Insights from the Jiaodong Peninsula (China, East Asia)

Metamorphic Core Complex dynamics and structural development: Field evidences from the Liaodong Peninsula (China, East Asia)

Contact Info

Product

Resources

About