TIMANIAN OROGENIC DEFORMATION ALONG THE NORTHEASTERN MARGIN OF BALTICA, NORTHWEST RUSSIA AND NORTHEAST NORWAY, AND AVALONIAN-CADOMIAN CONNECTIONS
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dc.contributor.author | Roberts D. | |
dc.contributor.author | Siedlecka A. | |
dc.date.accessioned | 2021-06-18T05:48:32Z | |
dc.date.available | 2021-06-18T05:48:32Z | |
dc.date.issued | 2002 | |
dc.identifier | https://elibrary.ru/item.asp?id=14277703 | |
dc.identifier.citation | Tectonophysics, 2002, 352, 1-2, 169-184 | |
dc.identifier.issn | 0040-1951 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/29131 | |
dc.description.abstract | Predominantly terrigenous sedimentary successions of mainly Neoproterozoic age characterise the northeastern margin of Baltica, and extend over a strike distance of 1800 km from the Timans in Northwest Russia to the eastern part of Varanger Peninsula in Northeast Norway. Along this passive, extensional, faulted continental margin, pericratonic and proximal, basinal facies domains can be traced adjacent to a major, complex, NW–SE-trending fault zone. Deep drillholes through the Pechora Basin in Russia have penetrated the pre-Palaeozoic oceanic tholeiites, and subduction-related island arc volcanites and diverse plutonic bodies in the distal parts of the ocean basinal domain—part of a Paleoasian ocean of unknown magnitude. In Mid to Late Vendian time, these Neoproterozoic magmato-sedimentary assemblages were telescoped and accreted against this same northeastern margin of Baltica; a phase of orogenic deformation and metamorphism known as the Timanian (formerly, Baikalian). Descriptions are given of the fold structures and associated metamorphic fabrics encountered in different parts of the exposed Timan–Varanger Belt. These are mostly NW–SE-trending, SW-verging folds and NE-dipping cleavages or, locally, schistosities. | |
dc.title | TIMANIAN OROGENIC DEFORMATION ALONG THE NORTHEASTERN MARGIN OF BALTICA, NORTHWEST RUSSIA AND NORTHEAST NORWAY, AND AVALONIAN-CADOMIAN CONNECTIONS | |
dc.type | Статья |
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