Magnetic fabrics and paleomagnetism of the Storsjön-Edsbyn deformation zone, central Sweden
1999 (English)Licentiate thesis, comprehensive summary (Other academic)
Anisotropy of magnetic susceptibility (AMS) and paleomagnetic data from the Storsjön-Edsbyn Deformation Zone (SEDZ) in central Sweden are presented. The SEDZ is a regional shear zone c. 200km in length that cuts through 1.7-1.9 Ga old rocks in the central part of the Fennoscandian shield. The AMS analyses support a tectonic model suggesting that the SEDZ is a pureshear dominated transpression zone. The width of the zone in its southern part is defined to c. 10-12km and in the northern part it is c. 20-25km. A dolerite sill that truncates the plastic deformation pattern of the SEDZ postdates its activity to c. 1250 Ma, but paleomagnetic data from a dolerite dike indicates that the zone may be older than c. 1.6 Ga.
Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 1999. , 92 p.
Licentiate thesis / Luleå University of Technology, ISSN 1402-1757 ; 1999:64
Research subject Applied Geophysics
IdentifiersURN: urn:nbn:se:ltu:diva-26071Local ID: c7bc8860-d6e8-11db-8550-000ea68e967bOAI: oai:DiVA.org:ltu-26071DiVA: diva2:999230
Godkänd; 1999; 20070320 (ysko)2016-09-302016-09-302016-10-20Bibliographically approved