Uranium Enrichment in the Permian Organic-Rich Walchia Shale, Intra-Sudetic Depression, Southwestern Poland

  1. John Parnell,
  2. Ye Lianjun and
  3. Chen Changming
  1. S. Wolkowicz

Published Online: 3 APR 2009

DOI: 10.1002/9781444303872.ch18

Sediment-Hosted Mineral Deposits: Proceedings of a Symposium Held in Beijing, People's Republic of China, 30 July-4 August 1988

Sediment-Hosted Mineral Deposits: Proceedings of a Symposium Held in Beijing, People's Republic of China, 30 July-4 August 1988

How to Cite

Wolkowicz, S. (1990) Uranium Enrichment in the Permian Organic-Rich Walchia Shale, Intra-Sudetic Depression, Southwestern Poland, in Sediment-Hosted Mineral Deposits: Proceedings of a Symposium Held in Beijing, People's Republic of China, 30 July-4 August 1988 (eds J. Parnell, Y. Lianjun and C. Changming), Blackwell Publishing Ltd., Oxford, UK. doi: 10.1002/9781444303872.ch18

Editor Information

  1. Department of Geology, The Queen's University of Belfast, Belfast BT7 INN, UK

Author Information

  1. Geological Survey of Poland, Rakowiecka 4, 00–975 Warsaw, Poland

Publication History

  1. Published Online: 3 APR 2009
  2. Published Print: 27 SEP 1990

ISBN Information

Print ISBN: 9780632028818

Online ISBN: 9781444303872

SEARCH

Keywords:

  • Intra-Sudetic depression, including black shales of lacustrine origin;
  • sedimentology of Walchia shale;
  • uranium mineralization;
  • anoxic–pelagic zone;
  • Slupiec Formation;
  • Ruprechtice horizon

Summary

The Lower Permian section of the Intra-Sudetic depression includes black shales of lacustrine origin. Of these shales, the Walchia shale (Ratno Dolne Member) has the widest distribution. The rocks are further subdivided into several complexes according to lithology. They represent sedimentary environments varying from oxidized and unoxidized parts of the pelagic zone to the littoral and coastal plain. Horizons with uranium mineralization occur within beds of organic-rich pelagic sediment. Facies analysis and studies of organic matter suggest that the mineralization was syndiagenetic and occurred in rocks below wave base. The presence of migrated bitumens on fracture surfaces and a correlation between uranium and organic carbon contents suggest the possibility of reconcentration of uranium within migrated bitumens.