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Mesozoic structural evolution of the New Siberian Islands
Federal Institute of Geosciences and Natural Resources BGR, Germany.ORCID iD: 0000-0002-2426-6968
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Geophysics.ORCID iD: 0000-0001-6095-2941
Federal Institute of Geosciences and Natural Resources BGR, Germany.ORCID iD: 0000-0002-1488-026X
Institute of Geology, Leibnitz University Hannover.ORCID iD: 0000-0003-2908-9259
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2017 (English)In: Geological Society Special Publication, ISSN 0305-8719, E-ISSN 2041-4927, Vol. 460Article in journal (Refereed) Published
Abstract [en]

The New Siberian Islands are affected by a number of Mesozoic tectonic events. Theoldest event (D1a) is characterized by NW-directed thrusting within the South Anyui SutureZone combined with north – south-trending sinistral strike-slip in the foreland during the Early Cre-taceous. This compressional deformation was followed by dextral transpression along north –south-trending faults, which resulted in NE – SW shortening in the Kotelny Fold Zone (D1b).The dextral deformation can be related to a north – south-trending boundary fault zone west ofthe New Siberian Islands, which probably represented the Laptev Sea segment of the AmerasiaBasin Transform Fault in pre-Aptian – Albian times. The presence of a transform fault west ofthe islands may be an explanation for the long and narrow sliver of continental lithosphere ofthe Lomonosov Ridge and the sudden termination of the South Anyui Suture Zone against the pre-sent Laptev Sea Rift System. The intrusion of magmatic rocks 114 myr ago was followed by NW –SE-trending sinistral strike-slip faults of unknown origin (D2). In the Late Cretaceous – Paleocene,east – west extension (D3) west of the New Siberian Islands initiated the development of the LaptevSea Rift System, which continues until today and is largely related to the development of the Eur-asian Basin.

Place, publisher, year, edition, pages
London: Geological Society of London, 2017. Vol. 460
Keyword [en]
New Siberian Islands, Mesozoic, structure
National Category
Geology
Research subject
Earth Science with specialization in Historical Geology and Palaeontology
Identifiers
URN: urn:nbn:se:uu:diva-328814DOI: 10.1144/SP460.1OAI: oai:DiVA.org:uu-328814DiVA: diva2:1137733
Projects
Circum-Arctic Structural Events (CASE) 13
Available from: 2017-09-01 Created: 2017-09-01 Last updated: 2017-09-01

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