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Tuffeau de St Omer

Fossiliferous stratigraphic units of EuropeGeography of Nord (French department)Geography of the Pas-de-CalaisGeologic formations of FrancePaleocene Series of Europe
Paleogene FrancePaleontology in FranceSandstone formationsShallow marine depositsThanetian Stage

The "Tuffeau" de Saint-Omer is a geologic formation in northern France. The sandstones of the formation, named after Saint-Omer, preserve bird and primate fossils dating back to the middle Thanetian age of the Paleocene epoch of the Paleogene period, dating to about 58 Ma. The European land mammal age, a continental biostratigraphic zonation for the Cenozoic, as ammonites for the Mesozoic and conodonts for the Paleozoic, classification starts after this age, the Thanetian is correlative with the MP2 to 5 of the Mammal Paleogene zone of Europe. At this time in geologic history the climate was at an all-time high with estimated tropical temperatures of 34 °C (93 °F) and 2000 ppm atmospheric CO2.The formation is locally referred to and geologically known as tuff, although the lithology of the formation is glauconitic sandstone, deposited in a shallow marine environment at the southernmost edge of the North Sea Graben.

Excerpt from the Wikipedia article Tuffeau de St Omer (License: CC BY-SA 3.0, Authors).

Tuffeau de St Omer
D 127, Lille

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N 50.5 ° E 3.2 °
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D 127
59242 Lille
Hauts-de-France, France
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