Late Precambrian stratigraphy and structure of the north-eastern margin of the Fennoscandian shield (East-Finnmark - Timan Region).

• Main Author: Siedlecka, Anna
• Format: Article in Journal/Newspaper
• Language: English
• Published: 1975
• Subjects: KALEDONSKE FJELLKJEDE; GEOKRONOLOGI; FORKASTNING; STRATIGRAFI; STRUKTURGEOLOGI; PREKAMBRIUM; Vardø; Vadsø; Adamsfjord; Båtsfjord; Fennoscandian; Finnmark; Kildin; Varanger
• Online Access: https://hdl.handle.net/11250/2675018

Later Precambrian (Riphean and Vendian) rocks occur along the north-easternb margin of the Fennoscandian Shield and the Russian Platform in Three zones: 1) the Varanger-Kildin, 2) the Timan-Kanin and 3) the Southern Barents Shelf zones. The last occupies an intermediate position and is entirely covered by the sea. Varanger-Kildin and Timan-Kanin inter-zonal sedimentary facies comparisons suggest a correlation between the miogeosynclinal sequence of the former zone and succession of strata of the Central Timans regarded as marginal miogeosynclinal in origin. The internal miogeosynclinal facies of the Timans may be expected to occur in the deep substratum of the Southern Barents Shelf while equivalents of the pericratonic deposits of the Varanger-Kildin Zone may possibly be hidden beneath the Palaeozoic strata of the Russian Platform, assuming that SW-NE margin-to-basin facies distribution constitutes a regional feature. The linear macro-facies distribution is suggested to reflect the development of NW-NE trending continental margin to the Fennoscandian Shield at the beginning of the Middle Riphean; the basin has been filled with sediments during the Middle and Upper Riphean. 36363