Consequences of orogenic spreading: – examples from the Svecofennian orogen

Annakaisa Korja, Timo Kilpeläinen, Taru Lammi, Kaisa Nikkilä, Taija Torvela, Tellervo Hyvönen

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientific


The evolution of the accretionary Paleoproterozoic Svecofennian orogen encompasses three evolutionary phases: accretion, plateau and collapse. During the plateau phase the upper and middle crust have been laterally spreading towards thinner areas. Several kinematic indications suggest that the collisional crustal architecture was rearranged and a new super-infrastructure was developed during lateral spreading and flow of the crust. We will show examples of post-collisional spreading with the help of seismic reflection data, seismic anisotropy maps, lineation maps, analogue models and structural observations.
Original languageEnglish
Title of host publicationLithosphere 2010 : Sixth symposium on the strucutre, composition and evolution of the lithosphere in Finland
EditorsPekka Heikkinen, Katriina Arhe, Toivo Korja, Raimo Lahtinen, Lauri J. Pesonen, O, Tapani Rämö
Number of pages4
Place of PublicationHelsinki
PublisherInstitute of Seismology, University of Helsinki
Publication date27 Oct 2010
ISBN (Print)978-952-10-5055-8
ISBN (Electronic)978-952-10-5056-5
Publication statusPublished - 27 Oct 2010
MoE publication typeB3 Article in conference proceedings
EventLithosphere 2010 - Helsinki, Finland
Duration: 27 Oct 201028 Oct 2010
Conference number: 6

Fields of Science

  • 117 Geography, Environmental sciences
  • crust

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