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| Titel |
Tectonic reconstruction of Uda-Murgal arc and the Late Jurassic and Early Cretaceous convergent margin of Northeast Asia–Northwest Pacific |
| VerfasserIn |
S. D. Sokolov, G. Ye. Bondarenko, A. K. Khudoley, O. L. Morozov, M. V. Luchitskaya, M. I. Tuchkova, P. W. Layer |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1868-4556
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| Digitales Dokument |
URL |
| Erschienen |
In: Geology, geophysics and tectonics of Northeastern Russia: a tribute to Leonid Parfenov ; Nr. 4 (2009-09-17), S.273-288 |
| Datensatznummer |
250001452
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| Publikation (Nr.) |
 copernicus.org/smsps-4-273-2009.pdf |
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| Zusammenfassung |
| A long tectonic zone composed of Upper Jurassic to Lower Cretaceous volcanic
and sedimentary rocks is recognized along the Asian continent margin from the
Mongol-Okhotsk fold and thrust belt on the south to the Chukotka Peninsula on
the north. This belt represents the Uda-Murgal arc, which was developed along
the convergent margin between Northeast Asia and Northwest Meso-Pacific.
Several segments are identified in this arc based upon the volcanic and
sedimentary rock assemblages, their respective compositions and basement
structures. The southern and central parts of the Uda-Murgal arc were a
continental margin belt with heterogeneous basement represented by
metamorphic rocks of the Siberian craton, the Verkhoyansk terrigenous complex
of Siberian passive margin and the Koni-Taigonos Late Paleozoic to Early
Mesozoic island arc with accreted oceanic terranes. At the present day
latitude of the Pekulney and Chukotka segments there was an ensimatic island
arc with relicts of the South Anyui oceanic basin in a backarc basin.
Accretionary prisms of the Uda-Murgal arc and accreted terranes contain
fragments of Permian, Triassic to Jurassic and Jurassic to Cretaceous
(Tithonian–Valanginian) oceanic crust and Jurassic ensimatic island arcs.
Paleomagnetic and faunal data show significant displacement of these oceanic
complexes and the terranes of the Taigonos Peninsula were originally parts of
the Izanagi oceanic plate. |
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