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Article

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Published version

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2004

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cc by-sa (c) Gelabert et al., 2004
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/16880

On the origin of the North Pacific arcs

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http://doi.org/10.1344/105.000001427

Abstract

We present a new hypothesis that relates global plate tectonics to the formation of marginal basins, island arcs, spreading ridges and arc-shaped mountain belts around the North Pacific Ocean. According to our model, the ellipsoidal-shaped Paleogene basins of the South China Sea, Parece-Vela Basin, Shikoku Basin, Sea of Japan and the Sea of Okhotsk in addition to those of the North American Cordillera can be attributed to the change in plate convergence direction at 42 Ma between the Indoaustralian and Eurasian plates. The new direction of convergence was parallel to the eastern continental margin of Asia and resulted in widespread extension perpendicular to this margin and to the western margin of North America. Both margins form part of a circle parallel to the Indoaustralian-Eurasian direction of convergence.

Subject

Geologia marina, Arcs d'illes, Tectònica de plaques, Pacífic (Oceà : nord)

Subject (English)

Submarine geology, Island arcs, Plate tectonics, North Pacific Ocean

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Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)

Citation

GELABERT FERRER, Bernadí, et al. On the origin of the North Pacific arcs. Geologica Acta. 2004. Vol. 2, num. 3, pags. 203-212. ISSN 1695-6133. [consulted: 16 of August of 2026]. Available at: https://hdl.handle.net/2445/16880

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