TY - JOUR

T1 - Pacific-type orogenic belts

T2 - Linking evolution of oceans, active margins and intra-plate magmatism

AU - Safonova, Inna

AU - Maruyama, Shigenori

AU - Kruk, Nikolai

AU - Obut, Olga

AU - Kotler, Pavel

AU - Gavryushkina, Olga

AU - Khromykh, Sergey

AU - Kuibida, Maxim

AU - Krivonogov, Sergey

N1 - Publisher Copyright: © 2018 International Union of Geological Sciences. All rights reserved.

PY - 2018/6/1

Y1 - 2018/6/1

N2 - Pacific-type orogens (fold belts) hosting accretionary complexes are places keeping records of the evolution of paleo-oceans, and formation and transformation of continental crust at their active convergent margins. Pacific-type orogeny induces destruction of crustal materials, their subduction to the deep mantle, generation of hydrouscarbonated plumes in the mantle transition zone (MTZ) and its related intra-plate magmatism. We propose a new approach for linking paleo-oceans, active margins and intra-plate magmatism in central and eastern Asia. The approach "stands" on three "whales": the model of Ocean Plate Stratigraphy (OPS), the parameters of Pacific-type convergent margins and a model of hydrous-carbonated plumes. The OPS model evolved from extensive studies of accretionary complexes in the western Pacific, in particular, in Japan; it allows differentiating oceanic plates of one paleoocean and evaluating their sizes and ages. An important issue for reconstructing the history of paleo-oceans is to estimate major parameters of the Pacific-type convergent margins: accreting vs. Eroding, geometrical length, and life time. For the eroding margins we must define major periods of tectonic erosion and transportation of oceanic and continental materials to the deep mantle and evaluate a possibility of their accumulation in the MTZ. All this would allow us to develop a holistic model linking the evolution of paleooceans, the accretion and erosion of oceanic and continental crust materials at Pacific-type convergent margins, mantle metasomatism and intra-plate magmatism.

AB - Pacific-type orogens (fold belts) hosting accretionary complexes are places keeping records of the evolution of paleo-oceans, and formation and transformation of continental crust at their active convergent margins. Pacific-type orogeny induces destruction of crustal materials, their subduction to the deep mantle, generation of hydrouscarbonated plumes in the mantle transition zone (MTZ) and its related intra-plate magmatism. We propose a new approach for linking paleo-oceans, active margins and intra-plate magmatism in central and eastern Asia. The approach "stands" on three "whales": the model of Ocean Plate Stratigraphy (OPS), the parameters of Pacific-type convergent margins and a model of hydrous-carbonated plumes. The OPS model evolved from extensive studies of accretionary complexes in the western Pacific, in particular, in Japan; it allows differentiating oceanic plates of one paleoocean and evaluating their sizes and ages. An important issue for reconstructing the history of paleo-oceans is to estimate major parameters of the Pacific-type convergent margins: accreting vs. Eroding, geometrical length, and life time. For the eroding margins we must define major periods of tectonic erosion and transportation of oceanic and continental materials to the deep mantle and evaluate a possibility of their accumulation in the MTZ. All this would allow us to develop a holistic model linking the evolution of paleooceans, the accretion and erosion of oceanic and continental crust materials at Pacific-type convergent margins, mantle metasomatism and intra-plate magmatism.

KW - PLATE STRATIGRAPHY

KW - CONTINENTAL CONSTRUCTION

KW - MANTLE BENEATH

KW - ACCRETIONARY

KW - SUBDUCTION

KW - TECTONICS

KW - MIDDLE

KW - ROCKS

KW - EAST

KW - SUPERCONTINENT

UR - http://www.scopus.com/inward/record.url?scp=85049211176&partnerID=8YFLogxK

U2 - 10.18814/epiiugs/2018/018008

DO - 10.18814/epiiugs/2018/018008

M3 - Article

AN - SCOPUS:85049211176

VL - 41

SP - 79

EP - 88

JO - Episodes

JF - Episodes

SN - 0705-3797

IS - 2

ER -