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The age of Spitsbergen basement consolidation: U–Pb dating of detrital zircons from the Upper Precambrian and Lower Carboniferous clastic rocks of the northwestern part of Nordenskiöld Land |
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| Authors: | A N Sirotkin Yu B Marin N B Kuznetsov G A Korobova T V Romanyuk |
| Institution: | 1.Polar Marine Geosurvey Expedition,St. Petersburg,Russia;2.St. Petersburg Mining University,St. Petersburg,Russia;3.Geological Institute,Russian Academy of Sciences,Moscow,Russia;4.Kazan (Volga Region) Federal University,Kazan,Russia;5.Schmidt Joint Institute of Physics of the Earth,Moscow,Russia;6.Gubkin Russian State University of Oil and Gas,Moscow,Russia |
| Abstract: | The age distribution of detrital zircons from Upper Riphean and Early Carboniferous sandstones of the northwest part of Nordenskiöld Land (Spitsbergen Island) was studied. The results obtained supplement the previously known data on the rocks of Precambrian and Paleozoic masses of West Spitsbergen. Integrated consideration of these data showed that the time interval from the Middle Riphean to the Early Carboniferous inclusive might be subdivided into at least five stages characterized by quite different provinces supplying detritus to sedimentary basins. (The relics of these latter are represented in the present structure of western Svalbard.) The most ancient distinguished event of alteration of the sources of sedimentary matter (at the boundary of the Middle and Late Riphean) corresponds to the consolidation time of the ancient basement of Svalbard. |
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