# Mainz Basin

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The **Mainz Basin** (German: *Mainzer Becken*) or **Rhine-Main Basin**[1] is the name given to a [Cenozoic](/source/Cenozoic) [marine basin](/source/Basin_(geology)) that covered the area of the present-day region of [Rhenish Hesse](/source/Rhenish_Hesse) in Germany about 38 to 12 million years ago (38 - 12 [mya](/source/Mya_(unit))). The Mainz Basin was a bay or sea inlet, that for a short time in the [Palaeogene](/source/Palaeogene) period connected the then [North Sea](/source/North_Sea) (part of the gradually widening North Atlantic during the Palaeogene) with the [Paratethys Sea](/source/Paratethys_Sea) (part of the shrinking [Tethys Ocean](/source/Tethys_Ocean)).

## See also

- [Mainz Sand Dunes](/source/Mainz_Sand_Dunes)
- [Paris Basin](/source/Paris_Basin)

## Notes

1. Elkins, T H (1972). *Germany* (3rd ed.). London: Chatto & Windus, 1972, p. 218. ASIN B0011Z9KJA.

## References

- Falke: *Geologischer Führer von Rheinhessen.* 1960
- Klaus Hang: *Das Rheinhessische Hügelland für Naturfreunde.* In: Kosmos 1974
- E. Probst: *Deutschland in der Urzeit.* München, 1986
- D. Vogellehner: *Paläontologie.* Freiburg, 1987

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