The New Siberian Islands and evidence for the continuation of the Uralides, Arctic Russia

Autor:	M. K. Danukalova, Alexander B. Kuzmichev, Victoria Pease
Rok vydání:	2014
Předmět:	Paleontology Provenance Arctic Permian Heavy mineral Geology Baltica Foreland basin Devonian Zircon
Zdroj:	Journal of the Geological Society. 172:1-4
ISSN:	2041-479X 0016-7649
DOI:	10.1144/jgs2014-064
Popis:	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. Supplementary material: Sample co-ordinates, sediment petrography and heavy mineral analysis, U–Pb data tables and description of analytical methods associated with detrital zircon and granite analyses are available at http://www.geolsoc.org.uk/SUP18784.
Databáze:	OpenAIRE
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