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Agglutinated Foraminiferida from the Albian/Cenomanian Boundary in Se England

  • Malcolm B. Hart
  • David J. Carter
  • Paul N. Leary
  • Ash D. Talwar
Chapter
Part of the NATO ASI Series book series (ASIC, volume 327)

Abstract

In SE England the junction between the Gault Clay Formation and the Lower Chalk Formation is taken as the Albian/Cenomanian boundary. Off-shore a small cycle of sedimentation intervenes between these two formations and, by the rules of stratigraphic nomenclature, must be of latest Albian age. Foraminifera are exceptionally abundant throughout this interval and many agglutinated taxa are used in biozonation. The glauconite-rich basal bed of the chalk succession, of earliest Cenomanian age, contains an abundant, diverse, assemblage of agglutinated taxa, many of which grow to exceptional size. This assemblage is seen nowhere else in the UK succession and its occurrence at this level is taken as indicative of a sudden environmental change.

Keywords

Planktonic Foraminifera Transitional Form Channel Tunnel Uniserial Portion Stratigraphic Nomenclature 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 1990

Authors and Affiliations

  • Malcolm B. Hart
    • 1
  • David J. Carter
    • 2
  • Paul N. Leary
    • 3
  • Ash D. Talwar
    • 3
  1. 1.Department of Geological SciencesPolytechnic South WestPlymouth, DevonUK
  2. 2.FairwindsHawkhurst, KentUK
  3. 3.Department of Earth SciencesUniversity of LiverpoolLiverpoolUK

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