1. The New Siberian Islands and evidence for the continuation of the Uralides, Arctic Russia.
- Author
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Pease, Victoria L., Kuzmichev, Alexander B., and Danukalova, Maria K.
- Subjects
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MAGMATISM , *SANDSTONE , *GEOCHRONOMETRY , *ZIRCON , *GRANITE , *PLATE tectonics , *GEOLOGICAL basins - Abstract
U-Pb detrital zircon results from New Siberian Islands sandstones illuminate the long-lived controversy regarding the continuation of the Uralian orogen into the Arctic region. A dominant age peak of c. 285 Ma from Permian sandstone requires proximal derivation from Taimyr's Carboniferous- Permian granites, thought to reflect syn- to post-tectonic Uralian magmatism. The provenance of Devonian sandstone has Baltica affinities. The data record a dramatic change in provenance between Devonian and Permian time, from Baltica to a mixed Baltica + Uralian source. Our results confirm that the Uralian foreland basin extended from Taimyr to the New Siberian Islands. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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