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STRATI 2013 pp 729-732 | Cite as

The Cadomian Orogen: Neoproterozoic to Early Cambrian Crustal Growth and Orogenic Zoning Along the Northwestern Periphery of the West African Craton

  • Ulf LinnemannEmail author
  • Axel Gerdes
  • Mandy Hofmann
  • Linda Marko
Conference paper
  • 121 Downloads
Part of the Springer Geology book series (SPRINGERGEOL)

Abstract

The Cadomian Orogen in the NE Bohemian and northern Armorican massifs shows a distinct NW–SE orogenic zoning, consisting of: (1) an outboard-sitting continental crust unit comprising Neoproterozoic rocks associated with ~2.0-Gyr-old Icartian basement; (2) a magmatic arc and a back-arc basin; (3) a foreland or retroarc basin, respectively; and (4) the passive margin of the back-arc basin. New U–Pb zircon ages of detrital zircons of Neoproterozoic to Fortunian siliciclastics from the Schwarzburg Antiform in the Saxo-Thuringian Zone (NE Bohemian Massif) identify the West African Craton as the hinterland for the Cadomian Orogen. U–Pb ages and Hf isotope data constrain the timing of orogenic events and episodes of crustal growth of both the Cadomian Orogen and the cratonic hinterland.

Keywords

Cadomian Orogen Bohemian Massif Saxo-Thuringian Zone Zircon U–Pb isotopes Hf isotopes 

References

  1. Gerdes, A., & Zeh, A. (2006). Combined U-Pb and Hf isotope LA–(MC–) ICP–MS analysis of detrital zircons: Comparison with SHRIMP and new constraints for the provenance and age of an Armorican metasediment in Central Germany. Earth and Planetary Science Letters,249, 47–61.CrossRefGoogle Scholar
  2. Linnemann, U., Drost, K., Gerdes, A., Jeffries, T., & Romer, R. L. (2008). The Bohemian Massif (Chapter 3: “The Cadomian Orogeny”). In T. McCann (Ed.), The geology of Central Europe (pp. 121–147). London: The Geological Society of London.Google Scholar
  3. Linnemann, U., Gerdes, A., Hofmann, M., & Marko, L. (2013, accepted). The Cadomian Orogen: Neoproterozoic to early Cambrian crustal growth and orogenic zoning along the northwestern periphery of the West African Craton—Constraints from U–Pb ages and Hf isotopes of detrital and magmatic zircon of the Schwarzburg Antiform (Saxo-Thuringian Zone, NE Bohemian Massif, Germany). Precambrian Research. http://dx.doi.org/10.1016/j.precamres.2013.08.007.

Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Ulf Linnemann
    • 1
    Email author
  • Axel Gerdes
    • 2
  • Mandy Hofmann
    • 1
  • Linda Marko
    • 2
  1. 1.Senckenberg Naturhistorische Sammlungen Dresden, Museum für Mineralogie und Geologie, GeoPlasmaLabDresdenGermany
  2. 2.Institut für GeowissenschaftenMineralogie, Goethe-Universität FrankfurtFrankfurt am MainGermany

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