Sedimentary Environment of the Amphibolite-Grade Early Proterozoic Keiva and Kukas Basins (North-East Baltic Shield): Normative Mineral MINLITH Analysis

  1. Wladyslaw Altermann3 and
  2. Patricia L. Corcoran4
  1. O. M. Rosen1,
  2. V. T. Safronov1 and
  3. A. A. Abbyasov2

Published Online: 12 MAR 2009

DOI: 10.1002/9781444304312.ch11

Precambrian Sedimentary Environments: A Modern Approach to Ancient Depositional Systems

Precambrian Sedimentary Environments: A Modern Approach to Ancient Depositional Systems

How to Cite

Rosen, O. M., Safronov, V. T. and Abbyasov, A. A. (2002) Sedimentary Environment of the Amphibolite-Grade Early Proterozoic Keiva and Kukas Basins (North-East Baltic Shield): Normative Mineral MINLITH Analysis, in Precambrian Sedimentary Environments: A Modern Approach to Ancient Depositional Systems (eds W. Altermann and P. L. Corcoran), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444304312.ch11

Editor Information

  1. 3

    Institut für Allgemeine und Angewandte Geologie, Ludwig-Maximilians-Universität München, Luisenstrasse 37, D-80333 Munich, Germany

  2. 4

    Department of Earth Sciences, Dalhousie University, Halifax, Nova Scotia, B3H 3J5, Canada

Author Information

  1. 1

    Geological Institute, Russian Academy of Sciences, Pyzhevsky per., 7, Moscow 109017, Russia

  2. 2

    Institute of the Lithosphere of the Marginal Seas, Russian Academy of Sciences, Staromonetny per., 22, Moscow 109180, Russia

Publication History

  1. Published Online: 12 MAR 2009
  2. Published Print: 18 FEB 2002

ISBN Information

Print ISBN: 9780632064151

Online ISBN: 9781444304312

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Keywords:

  • sedimentary environment of amphibolite-grade Early proterozoic Keiva and Kukas basins;
  • sedimentary environments of two early proterozoic basins using MINLITH program for normative mineral calculations;
  • Keiva basin;
  • amphibolite-grade early proterozoic basins;
  • Kukas basin;
  • Keiva basin corresponding to recumbant syncline on archaean footwall of Kolmozero–Voronya suture

Summary

The sedimentary environments of two Early Proterozoic basins within the north-east Baltic Shield have been studied using the MINLITH program for normative mineral calculations. The Keiva Basin forms a recumbent syncline on the Archaean footwall of the Kolmozero–Voronya Suture. This amphibolite-grade sequence contains a high-Al–kyanite schist member, covered by meta-carbonates. The calculated primary mineral composition of the schist member shows that it was originally composed mainly of kaolinite and quartz fragments with an iron oxide admixture, whereas dolomite and feldspar fragments predominated in the meta-carbonate member. The shallow open shelf clastic sediments were derived from humid weathering of continental crust and were followed by sedimentation of dolomite with some feldspar clasts in a closed basin, under arid conditions. The Kukas Basin now forms a recumbent syncline within a suture between the Archaean Karelian and Belomorian palaeocontinents. It is composed of amphibolite-grade biotite schists and meta-carbonates, both enriched with carbonaceous (graphite) matter. These meta-sediments are associated with meta-basalt and para-amphibolite rocks. Calculated primary mineral composition of the schist hints towards a tuffaceous sediment composed mainly of quartz, feldspar and chlorite. The meta-carbonates represent former dolomitic limestones. Both protoliths were probably formed in a partly closed, euxinic shelf basin, situated close to volcanic centres.