Consequences of orogenic spreading: – examples from the Svecofennian orogen

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

Forskningsoutput: Kapitel i bok/rapport/konferenshandlingKonferensbidragVetenskaplig

Sammanfattning

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.
Originalspråkengelska
Titel på gästpublikationLithosphere 2010 : Sixth symposium on the strucutre, composition and evolution of the lithosphere in Finland
RedaktörerPekka Heikkinen, Katriina Arhe, Toivo Korja, Raimo Lahtinen, Lauri J. Pesonen, O, Tapani Rämö
Antal sidor4
VolymS-55
UtgivningsortHelsinki
FörlagInstitute of Seismology, University of Helsinki
Utgivningsdatum27 okt 2010
Sidor41-44
ISBN (tryckt)978-952-10-5055-8
ISBN (elektroniskt)978-952-10-5056-5
StatusPublicerad - 27 okt 2010
MoE-publikationstypB3 Ej refererad artikel i konferenshandlingar
EvenemangLithosphere 2010 - Helsinki, Finland
Varaktighet: 27 okt 201028 okt 2010
Konferensnummer: 6

Vetenskapsgrenar

  • 117 Geografi och miljövetenskaper

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