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Геодинамика и тектонофизика

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MELTING OF ACCRETIONARY WEDGE AND BUILDING MATURE CONTINENTAL CRUST: INSIGHTS FROM THE MAGMATIC EVOLUTION OF THE CHINESE ALTAI OROGEN, CENTRAL ASIA

https://doi.org/10.5800/GT-2017-8-3-0268

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Аннотация

Tectonic-magmatic reworking of accretionary wedges is a key process responsible for differentiation and stabilization of continental crustal in accretionary orogens. This generic problem can be exemplified by magmatic evolution of the Chinese Altai which represents a high-grade core of the world's largest accretionary system, namely the Central Asian Orogenic Belt (CAOB). In the Chinese Altai, voluminous SilurianDevonian granitoids intruding a greywacke-dominated Ordovician flysch sequence. These intrusions are classically interpreted to originate from predominant (70‒90 %) juvenile (depleted mantle-derived) magma. However, their close temporal and spatial relationship with the regional anatexis of flysch rocks, allows us to examine the possibility that they were mainly derived from flysch rocks.

Об авторах

Yingde Jiang
Guangzhou Institute of Geochemistry, Chinese Academy of Sciences
Китай

State Key Laboratory of Isotope Geochemistry, 

Guangzhou 510640



Karel Schulmann
Center of Lithospheric Research, Czech Geological Survey
Чехия
11821 Praha 1


Min Sun
The University of Hong Kong
Гонконг

Department of Earth Sciences, 

Pokfulam Road, Hong Kong



Pavla Štípská
Center of Lithospheric Research, Czech Geological Survey
Чехия
11821 Praha 1


Alexandra Guy
Center of Lithospheric Research, Czech Geological Survey
Чехия
11821 Praha 1


Ondrej Lexa
Institute of Petrology and Structural Geology, Charles University
Чехия
12843 Praha 2


Vojetch Janoušek
Center of Lithospheric Research, Czech Geological Survey
Чехия
11821 Praha 1


Chao Yuan
Guangzhou Institute of Geochemistry, Chinese Academy of Sciences
Китай

State Key Laboratory of Isotope Geochemistry, 

Guangzhou 510640



Для цитирования:


Jiang Y., Schulmann K., Sun M., Štípská P., Guy A., Lexa O., Janoušek V., Yuan C. MELTING OF ACCRETIONARY WEDGE AND BUILDING MATURE CONTINENTAL CRUST: INSIGHTS FROM THE MAGMATIC EVOLUTION OF THE CHINESE ALTAI OROGEN, CENTRAL ASIA. Геодинамика и тектонофизика. 2017;8(3):481-482. https://doi.org/10.5800/GT-2017-8-3-0268

For citation:


Jiang Y., Schulmann K., Sun M., Štípská P., Guy A., Lexa O., Janoušek V., Yuan C. MELTING OF ACCRETIONARY WEDGE AND BUILDING MATURE CONTINENTAL CRUST: INSIGHTS FROM THE MAGMATIC EVOLUTION OF THE CHINESE ALTAI OROGEN, CENTRAL ASIA. Geodynamics & Tectonophysics. 2017;8(3):481-482. https://doi.org/10.5800/GT-2017-8-3-0268

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ISSN 2078-502X (Online)