Journal ArticleDOI
Sveconorwegian (-Grenvillian) deformation, metamorphism and leucosome formation in SW Sweden, SW Baltic Shield: constraints from a Mesoproterozoic granite intrusion
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TLDR
In this paper, structural, metamorphic and U-Pb data from the Mesoproterozoic Tjarnesjo (meta-) granite demonstrate that the granite intruded prior to a major gneiss-forming event.About:
This article is published in Precambrian Research.The article was published on 1999-10-01. It has received 92 citations till now. The article focuses on the topics: Baltic Shield & Metamorphism.read more
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The East European Craton (Baltica) before and during the assembly of Rodinia
Svetlana Bogdanova,Bernard Bingen,Roland Gorbatschev,T. N. Kheraskova,V. I. Kozlov,V. N. Puchkov,Yu. A. Volozh +6 more
TL;DR: The evolution of the western and eastern parts of the East European Craton followed very different paths from ca. 1.7 and 1.6-Ga to 1.4-Ga as discussed by the authors, and the differences of tectonic regime in the east and western parts of this Craton were determined by the movement and rotation of this megaterrane concomitantly with the Rodinia assembly.
A four-phase model for the Sveconorwegian orogeny, SW Scandinavia
TL;DR: The Sveconorwegian orogenic belt is one of the well-known Grenvillian orogeny regions as mentioned in this paper, which is located at the southwestern margin of Fennoscandia.
Journal Article
Timing of continental building in the Sveconorwegian orogen, SW Scandinavia
Bernard Bingen,Øyvind Skår,M. Marker,Ellen M.O. Sigmond,Ø. Nordgulen,J. Ragnhildsveit,Joakim Mansfeld,Robert D. Tucker,Jean-Paul Liégeois +8 more
TL;DR: The Sveconorwegian orogen of SW Scandinavia represents a truncated and comparatively small segment of the global Grenvillian belt as mentioned in this paper, and it consists of late-Palaeoproterozoic to Mesopropterozoics continental domains reworked during the SveConor Norwegian orogeny and displaced along lithospheric-scale SV shear zones.
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Zircon geochronology of migmatite gneisses along the Mylonite Zone (S Sweden): a major Sveconorwegian terrane boundary in the Baltic Shield
TL;DR: In this article, ion microprobe analyses guided by backscattered electron imaging were performed to directly date the partial melting and associated penetrative ductile deformation in the southern section of the Mylonite Zone (MZ).
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Granitic magmatism of Grenvillian and late Neoproterozoic age in Finnmark, Arctic Norway—Constraining pre-Scandian deformation in the Kalak Nappe Complex
TL;DR: In this article, ion microprobe U-Pb zircon dating of discordant plutonic rocks within the lowermost nappes demonstrates that some of the deformation must have taken place in a Grenville (Sveconorwegian) event.
References
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Subcommission on geochronology: Convention on the use of decay constants in geo- and cosmochronology
R.H. Steiger,E. Jäger +1 more
TL;DR: The IUGS Subcommission on Geochronology (FOOTNOTE 4) as discussed by the authors recommended the adoption of a standard set of decay constants and isotopic abundances in isotope geology.
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Approximation of terrestrial lead isotope evolution by a two-stage model
J.S. Stacey,Jan Kramers +1 more
TL;DR: In this paper, a two-stage model for terrestrial lead isotope evolution is proposed, which permits the age of the earth to be that of the meteorite system and also yields good model ages for samples of all ages.
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Improved accuracy of U-Pb zircon ages by the creation of more concordant systems using an air abrasion technique
TL;DR: Abrasion combined with an improved paramagnetic separation technique eliminates 90 to 100 percent of discordance so that ages of unprecedented accuracy (± 1 to 3 my) can be achieved for virtually all 2700 my old zircon populations from plutonic or volcanic rocks as mentioned in this paper.
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Isotopic evidence for the Precambrian provenance and Caledonian metamorphism of high grade paragneisses from the Seve Nappes, Scandinavian Caledonides: II. Ion microprobe zircon U-Th-Pb
Ian S. Williams,Stefan Claesson +1 more
TL;DR: In this article, an ion microprobe U-Th-Pb analysis of residual cores and metamorphic mantles of zircons from three high grade paragneisses from the Seve Nappe Complex, north-western Sweden, showed that the sediments comprising the protolith of the gneisses over a distance of 250 km were probably derived from similarly-aged source terranes.