Meikirch-Interglazial
Retour à HochterrasseReprésentation et statut
- Couleur CMYK
- (0%,0%,22%,0%)
- Couleur RGB
- R: 255 G: 255 B: 200
- Rang
- période glaciaire
- Usage
- Ce terme est en usage.
- Status
- valide
Nomenclature
- Deutsch
- Meikirch-Interglazial
- Français
- Interglaciaire de Meikirch
- Italiano
- Interglaciale di Meikirch
- English
- Meikirch Interglacial Complex
- Origine du nom
- Kernbohrung Meikirch (BE)
- Variantes historiques
- Eem-Interglazial (Welten 1982), --- (Preusser et al. 2005, Preusser et al. 2011), Interglazial Habsburg/Koblenz = IG Hb/Ko = IG Meikirch (Keller & Krayss 2010)
Âge
- Âge au sommet
-
- Pléistocène moyen
- Âge à la base
-
- Pléistocène moyen
- Méthode de datation
- Marine Isotope Stage MIS 7 = 242–186 ka (Preusser et al. 2005)
Références
- Révision
-
(2011) :
Quaternary glaciation history of northern Switzerland. E&G Quaternary Science Journal 60/2-3, 282-305
Another important stratigraphical record of the Aare Valley is the scientific drill hole near Meikirch, north of Bern (Fig. 1). Here, fine-grained lake sediments are found below ca. 40 m of coarse-grained melt water deposits (Fig. 8). The lake sediments (ca. 70 m) are situated on top of glacial deposits (till). Detailed pollen analyses revealed evidence for three warm periods within the lake deposits, separated by two cold phases (Welten 1982, 1988). Based on luminescence dating and re-interpreting the original palynostratigraphy, Preusser et al. (2005) correlate these three warm phases, each of which represents interglacial environmental conditions, with Marine Isotope Stage (MIS) 7 (242–186 ka).