Fission-track study of the Omgon accretionary complex on Western Kamchatka (Russian Far Eeast): possible northern continuation of the Shimanto belt (Japan)

• Autores: A.V. Soloviev, J.I. Garver
• Localización: Geotemas (Madrid), ISSN 1576-5172, Nº. 4, 2002 (Ejemplar dedicado a: INTERNATIONAL WORKSHOP ON FISSION TRACK ANALISIS: THEORY AND APPLICATIONS), págs. 143-146
• Idioma: inglés
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• Resumen

  • Detrital zircon fission-track ages from sedimentary rocks of the Omgon accretionaiy complex (Western Kamchatka) suggest deposition and deformation of this wedge resultedfrom Cretaceous subduction of Pacific oceanic plates under the Eurasian continental margin. The Omgon accretionary wedge was originated in very simitar geodynamic setting and same time as Cretaceous Shimanto Belt much farther to the south (older part of the belt). The similarity of ages, lithologic similarity, and tectonic setting may suggest the Omgon is the northern continuation of Shimanto. If the Omgon is a northern continuation, and if it is in place, this suggestion has important implications for the evolution of the Sea of Okhotsk to the east.