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Ulf Söderlund

Ulf Söderlund

Professor

Ulf Söderlund

The age of the Kleva intrusion, southeast Sweden

Author

  • Karolina Bjärnborg
  • Anders Scherstén
  • Ulf Söderlund
  • Wolfgang Maier

Summary, in English

The Kleva nickel-copper mineralization is situated within a gabbro-diorite intrusion on the border between the late Svecofennian rocks of the Oskarshamn-Jonkoping belt and rocks of the slightly younger Transscandinavian Igneous Belt (TIB). The sulphides present in the mafic intrusion are pyrrhotite, chalcopyrite, pentlandite and pyrite, occurring as massive mineralization, disseminations and thin, predominantly chalcopyrite-bearing veins. Age determinations of the gabbro-diorite were conducted to determine the age of the mineralization and its regional context. U-Pb analyses of baddeleyite (TIMS) and zircon (SIMS) from the gabbro-diorite and related rocks indicate an age of c. 1.79 Ga for the Kleva intrusion, broadly coeval with the TIB-rocks in the area, but younger than the late Svecofennian rocks. Further studies will help to constrain whether the sulphide mineralization was modified during later alteration, regional tectonism and metamorphism.

Department/s

  • Lithosphere and Biosphere Science

Publishing year

2013

Language

English

Pages

1647-1649

Publication/Series

Mineral deposit research for a high-tech world : Proceedings of the 12th Biennial SGA Meeting, 12-15 August 2013, Uppsala, Sweden

Document type

Conference paper

Publisher

SGU

Topic

  • Geology

Keywords

  • Kleva
  • sulphide
  • gabbro-diorite

Conference name

12th Biennial SGA Meeting on Mineral Deposit Research for a High-Tech World

Conference date

2013-08-12 - 2013-08-15

Conference place

Uppsala, Sweden

Status

Published

ISBN/ISSN/Other

  • ISBN: 978-91-7403-207-9