gtcrustГеодинамика и тектонофизикаGeodynamics & Tectonophysics2078-502XInstitute of the Earth's crust of the Russian Academy of Sciences, Siberian Branch10.5800/GT-2017-8-3-0287gtcrust-428Research ArticleПАЛЕОГЕОДИНАМИКАPALEOGEODYNAMICSINTRA-OCEANIC ARCS OF THE PALEO-ASIAN OCEANINTRA-OCEANIC ARCS OF THE PALEO-ASIAN OCEANSafonovaI.SafonovaI.

Novosibirsk

Novosibirsk

KotlyarovA.KotlyarovA.

Novosibirsk

Novosibirsk

KrivonogovS.KrivonogovS.

Novosibirsk

Novosibirsk

V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch RAS; Novosibirsk State UniversityРоссияV.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch RAS; Novosibirsk State UniversityRussian FederationV.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch RASРоссияV.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch RASRussian Federation20171310201783547550Copyright © Safonova I., Kotlyarov A., Krivonogov S., 20172017Safonova I., Kotlyarov A., Krivonogov S.Safonova I., Kotlyarov A., Krivonogov S.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.gt-crust.ru/jour/article/view/428

Intra-oceanic arcs (IOAs) form at Pacific-type convergent margins, in the upper “stable” plate, when the subducting plate submerges to the depths of melting, i.e., to ca. 50–100 km. A typical IOA system, such as Mariana-Bonin and the Philippines Sea, consists of subduction zone, fore-arc region with accretionary prism, frontal or active arc, marginal basin with spreading center, and, in some cases, one or more remnant arcs and inactive marginal basin. The IOAs are very important elements of Pacific-type convergent margins as they represent major sites of juvenile continental crust formation (e.g. [Clift et al., 2003; Stern, 2010; Maruyama et al., 2011]), but are also the most important sites of crust removal by sediment subduction and tectonic/ subduction erosion [Stern, Scholl, 2010].

Intra-oceanic arcs (IOAs) form at Pacific-type convergent margins, in the upper “stable” plate, when the subducting plate submerges to the depths of melting, i.e., to ca. 50–100 km. A typical IOA system, such as Mariana-Bonin and the Philippines Sea, consists of subduction zone, fore-arc region with accretionary prism, frontal or active arc, marginal basin with spreading center, and, in some cases, one or more remnant arcs and inactive marginal basin. The IOAs are very important elements of Pacific-type convergent margins as they represent major sites of juvenile continental crust formation (e.g. [Clift et al., 2003; Stern, 2010; Maruyama et al., 2011]), but are also the most important sites of crust removal by sediment subduction and tectonic/ subduction erosion [Stern, Scholl, 2010].

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The authors declare that there are no conflicts of interest present.