Terrane displacement and Sveconorwegian rotation of the Baltic Shield; a working hypothesis

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Authors:Torske, Tore
Author Affiliations:Primary:
Univ. Tromso, Inst. Biol. and Geol., Tromso, Norway
Other:
Free Univ., Earth Sci. Inst., Netherlands
Volume Title:deep Proterozoic crust in the North Atlantic provinces
Volume Authors:Tobi, Alex C., editor; Touret, Jacques L. R.
Source:NATO Advanced Study Institutes Series. Series C: Mathematical and Physical Sciences, Vol.158, p.333-343; NATO Advanced Study Institute on The deep Proterozoic crust in the North Atlantic provinces, Moi, Norway, July 16-30, 1984, edited by Alex C. Tobi and Jacques L. R. Touret. Publisher: D. Reidel Publishing Company, Dordrecht-Boston, International. ISSN: 0377-2071. ISBN: 90-277-2101-7
Publication Date:1985
Note:In English. 62 refs.; illus. incl. geol. sketch map
Summary:A hypothetical, sinistral displacement of approx 500 km is postulated as having taken place between the S Norway Precambrian region and the main Baltic Shield in Sveconorwegian times. This inference is based on a plate tectonic model incorporating: 1) the concept of displaced terrains as an integral tectonic element of actualistic cordilleran-type continental margins should be taken into account; and 2) previously published palaeomagnetic reconstructions, indicating approx 90° clockwise rotation of the Baltic Shield relative to the Laurentian Shield 1200-1000 m.y. ago, restoring the S Norway Precambrian region to its hypothetical, pre-displacement position, and bringing an inferred post-Svecofennian, cordilleran-type orogenic segment in south Norway into alignment with a coeval, fragmentary, cordilleran-type orogenic belt in SW Sweden. [J.M.H.]
Subjects:Displacements; Plate tectonics; Precambrian; Rotation; Sveconorwegian Orogeny; Tectonophysics; Terranes; Europe; Fennoscandian Shield; Norway; Scandinavia; Southern Norway; Western Europe; Hypothetical studies; Telemark-Agder-Rogaland Block
Abstract Numbers:86M/5011
Record ID:1986025882
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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