Skin rivium

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system series step ≈ age ( mya )
higher higher higher younger
chalk Upper Chalk Maastrichtium 66
⬍
72
Campanium 72
⬍
83.6
Santonium 83.6
⬍
86.3
Coniacium 86.3
⬍
89.7
Turonium 89.7
⬍
93.9
Cenomanium 93.9
⬍
100.5
Lower Cretaceous Albium 100.5
⬍
112.9
Aptium 112.9
⬍
126.3
Barremium 126.3
⬍
130.7
Skin rivium 130.7
⬍
133.9
Valanginium 133.9
⬍
139.3
Berriasium 139.3
⬍
145
deeper deeper deeper older

The Hauterivium (in German usage often shortened to Hauterive) is a chronostratigraphic level of the Lower Cretaceous in the history of the earth . Geochronologically, the stage ranges from about 133.9 to about 130.7 million years. The Hauterivium follows the Valanginium and is replaced by the Barremium .

Naming and history

The original eponymous type locality is located near the village of Hauterive in Switzerland and was named after it. Eugène Renevier introduced the stage under this name in 1873.

Definition and GSSP

The beginning of the stage is defined with the first onset of the ammonite genus Acanthodiscus . It ends with the first onset of the ammonite species Spitidiscus hugii . The stage is further divided into seven biozones, which are also defined by ammonites. A GSSP (global type locality and type profile) has not yet been ratified.

Subdivision of the Hauterivium

The skin ivium in the Tethys area is subdivided into seven ammonite biozones:

literature

  • Felix Gradstein, Jim Ogg, Jim & Alan Smith: A Geologic timescale. Cambridge University Press 2004, ISBN 978-0-521-78673-7
  • Hans Murawski & Wilhelm Meyer: Geological dictionary . 10., rework. u. exp. Ed., 278 p., Enke Verlag, Stuttgart 1998 ISBN 3-432-84100-0 .

Web links