Коллектив авторов
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Rahl J.M., Reiners P.W., Campbell I.H. et al. Combined single-grain (U-Th)/He and U/Pb dating of detrital zircons from the Navajo Sandstone, Utah. GSA Data Repository. Item 2003 (G19653). www.geosociety.org/pubs/ft2003.htm
Rasmussen C.M.O., Harper D.A.T. Was SW Alaska part of Baltica in the Late Ordovician? WOGOGOB 2007. 9th meeting of the Working Group on Ordovician Geology of Baltoscandia. Sveriges geologiska undersokning. 2007. p. 103–104
Remizov D.N., Pease V.L. The Dzela complex, Polar Urals, Russia: a Neoproterozoic island arc. In: Gee, D.G., Pease, V. (Eds.), The Neoproterozoic Timanide Orogen of Eastern Baltica. Geological Soc., London, Memoirs, 30. 2004. p. 107–123
Roberts N.M.W., Slagstad T., Marker M. SW Fennoscandia in the formation and break-up of Rodinia (1): 1.8–1.0 Ga crustal growth and Sveconorwegian reworking In: Rodinia: Supercontinents, Superplumes and Scotland, Fermor meeting, Programme and abstracts. Edinburg, Scotland, 2009, P. 69.
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Samson S.D., D’Lemos R.S., Blichert-Toft J., Vervoort J. U-Pb geochronology and Hf-Nd isotope compositions of the oldest Neoproterozoic crust within the Cadomian orogen: New evidence for a unique juvenile terrane // Earth Planet. Sci. Lett. 2003. Vol. 208. P. 165–180.
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Sokolov S.D., Luchitskaya M.V., Silantyev S.A. et al. Ophiolites in accretionary complexes along the Early Cretaceous margin of NE Asia: Age, composition, and geodynamic diversity. In: Dilek, Y & Robinson, P.T. (eds) «Ophiolites in Earth History», Geol. Soc. London Spec. Publ. 2003. 218, p. 619–664.
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N.B. Kuznetsov [223] . Neoproterozoic – Early Paleozoic tectonic history of Western Arctic (regional geological and paleotectonic aspects)
Abstract
The newest data (been obtained during the recent years, partially in the frames of IPY programs) over the Western Arctic regions and (to a lesser degree) over some other areas of Arctic are presented. They concern the internal structure Neoproterozoic complexes of some areas of the Western Arctic regions and obtaining of geochemical, isotopic-geochemical and isotopic-geochronological characteristics of detrital zircons from silicaclactic rocks from few Neoproterozoic units of the Timan and Polar Urals. Summary of the presented data and the newest various data (geochronological, petrological, biogeographical, etc.) from other high-latitude areas of Arctica allowed to consider Neoproterozoic – Early Paleozoic tectonic history of Arctica, particularly, a problem of existence of an ancient (Precambrian) continent Arctida/Hyperborea whose fragments are now distributed over the Arctic sector.
223
Geological Institute of Russian Academy of Science (GIN RAS), Moscow, Russia
The new materials allowed us to reconsider the Neoproterozoic – Early Paleozoic stage of geodynamic scenario for Arctic. The key moment of the new reconstruction is a collision of two paleo-continents – Baltica (Precambrian skeleton of East-European Craton) and Arctida been occurred at the Neoproterozoic/Cambrian boundary. This new conception is named «ABC-conception» (Arctida-Baltica Collision). The new reconstruction of Arctida paleo-continent is strongly modified in comparison to the reconstruction of L.P.Zonenshain and his co-authors. In our interpretation, Arctida paleo-continent existed at least from Neoproterozoic up to the Baltica-Arctida collision and included Barentsia (Barents shelves and Timan-Pechora region) and Svalbard.