Structural successions used to compare tectonic histories of Svecofennlian migmatites from widely separated outcrops in southern Finland

Alaric M. Hopgood

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

A study has been made to test the likelihood that migmatites cropping out in the Finnish Archipelago have undergone a different, similar, or identical, tectonic history to those in small, poorly exposed inland areas of the forested region further east in the vicinity of Orijarvi. The study is based on comparison of structural associations and has used the detailed small-scale structural succession already determined from the exceptionally well-exposed Proterozoic Svecofennian migmatites on outcrops in the Jussaro-Skaldo area of the Finnish Archipelago. Preliminary results show strong similarities between the Archipelago migmatite successions and those in Orijarvi, suggesting that they shared at least part of a common tectonic history. This indicates that further detailed structural examination would be rewarding and should confirm, or otherwise, that the regions shared a comparable tectonic history.

Original languageEnglish
Pages (from-to)11-18
Number of pages8
JournalProceedings of the Geologists' Association
Volume118
Issue number1
DOIs
Publication statusPublished - 2007

Keywords

  • Finland
  • Jussaro
  • migmatites
  • Orijarvi
  • Skaldo
  • structural successions
  • terrane

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