Title: Ypresian
Authors: Steurbaut, Etienne # ×
Issue Date: 2006
Series Title: Geologica Belgica vol:9 issue:1-2 pages:73-93
Abstract: S e historical Ypresian stage concept or Ypresian Synthem, on which this paper focuses, was introduced
by A. Dumont in 1849 (minutes of the meeting published in 1850) to specify marine clays and overlying glauconitic
sands occurring in the Ieper area (W Belgium), although without mentioning stratotype or type locality. S is concept,
which clearly evolved in the course of the 19th and 20th century, fundamentally diff ers from the GSSP-defi ned Standard
Global Ypresian Stage (GSSP ratifi ed in 2003 at Dababiya, Egypt). S e latter ranges from 55.8 (± 0.2) to 48.6 (± 0.2)
Ma and represents the lowermost Eocene Standard Stage. Here, we briefl y discuss the diff erent geological aspects of
the Ypresian sensu Dumont, currently equated with the Ieper Group, including its stratigraphy and its sedimentological
and palaeontological characteristics. S e structural context and palaeogeography of the Belgian Basin during the
Ypresian are outlined. S e major scientifi c contributions are thematically listed.
ISSN: 1374-8505
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Division of Geology
× corresponding author
# (joint) last author

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