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Polar Research Volume 12, 1993 - Issue 2
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Original Articles

An Early Proterozoic U-Pb zircon age from an Eskolabreen Formation gneiss in southern Ny Friesland, Spitsbergen

Yu. A. BalashovLaboratory of Isotope Geochemistry, Geological Institute, Kola Science Centre, Russian Academy of Sciences, 14 Fersman Str., 184200 Apatity, Russia;
,
A. N. LarionovLaboratory of Isotope Geochemistry, Geological Institute, Kola Science Centre, Russian Academy of Sciences, 14 Fersman Str., 184200 Apatity, Russia;
,
L. F. GannibalLaboratory of Isotope Geochemistry, Geological Institute, Kola Science Centre, Russian Academy of Sciences, 14 Fersman Str., 184200 Apatity, Russia;
,
A. N. SirotkinPolar Marine Geological Exploration Expedition, 24 Pobeda Str., 189510 Lomonosov-St. Petersburg, Russia;
,
A. M. TebenkovPolar Marine Geological Exploration Expedition, 24 Pobeda Str., 189510 Lomonosov-St. Petersburg, Russia;
,
G. I. RyüngenenLaboratory of Isotope Geochemistry, Geological Institute, Kola Science Centre, Russian Academy of Sciences, 14 Fersman Str., 184200 Apatity, Russia;
&
Y. OhtaNorsk Polarinstitutt, P.O. Box 5072 Majorstua, N-0301 Oslo, Norway.
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Pages 147-152 | Published online: 16 Dec 2016
 
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Abstract

A preliminary U/Pb zircon age determination has been carried out on a grey gneiss of the Eskolabreen Formation, the lowest observable lithostratigraphic unit of Precambrian metamorphic rocks in southern Ny Friesland, NE Spitsbergen. The obtained age, ca. 2, 400 Ma, is considered to be a metamorphic age and suggests an Early Proterozoic tectonothermal event.

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