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| Titel |
Geology of the Shelves surrounding the New Siberian Islands, Russian Arctic |
| VerfasserIn |
D. Franke, K. Hinz |
| 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.35-44 |
| Datensatznummer |
250001437
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| Publikation (Nr.) |
 copernicus.org/smsps-4-35-2009.pdf |
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| Zusammenfassung |
| A total of 11 700 km of multichannel seismic reflection data were acquired
during recent reconnaissance surveys of the wide, shallow shelves of the
Laptev and western East Siberian Seas around the New Siberian Islands. To the
north of the Laptev Sea, the Gakkel Ridge, an active mid-ocean ridge which
separates the North American and Eurasian Plates, meets abruptly the steep
slope of the continental shelf. Extension has affected the Laptev Shelf since
at least the Early Tertiary and has resulted in the formation of three major,
generally north-south trending rift basins: the Ust' Lena Rift, the Anisin
Basin, and the New Siberian Basin. Our data indicate that the rift basins on
the Laptev Shelf are not continuous with those on the East Siberian Shelf.
The latter shelf can best be described as an epicontinental platform which
has undergone continuous subsidence since the Late Cretaceous. The greatest
subsidence occurred in the NE, manifested by a major depocentre filled with
inferred (?)Late Cretaceous to Tertiary sediments up to 5 s (twt) thick. On
the basis of deep reflection data we revise and adjust Mesozoic domain
boundaries around the New Siberian Islands. |
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