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Environmental significance of foraminiferal assemblages dominated by small-sized Ammodiscus and Trochammina in Triassic and Jurassic delta-influenced deposits
 

Summary: Environmental significance of foraminiferal assemblages dominated by small-sized
Ammodiscus and Trochammina in Triassic and Jurassic delta-influenced deposits
Jenö Nagy , Silvia Hess, Elisabeth Alve
Department of Geosciences, University of Oslo, P.O. Box 1047, Blinden, N-0316 Oslo, Norway
a b s t r a c ta r t i c l e i n f o
Article history:
Received 13 March 2009
Accepted 8 February 2010
Available online 16 February 2010
Keywords:
foraminifera
low diversity
agglutinated
small-sized
low salinity
reduced oxygen
Triassic and Jurassic
The sediment packages analyzed for benthic foraminifera consist of mudstones with interbedded sandstones
deposited in shallow delta-influenced shelf to deltaic environments. The sections are located in Spitsbergen,
the Barents Sea, northern North Sea and Yorkshire, and range in age from Late Triassic to Middle Jurassic.

  

Source: Alve, Elisabeth - Department of Geosciences, Universitetet i Oslo

 

Collections: Geosciences