Unit E4 is composed of weathered loessic colluvium.
The deposit has been much disturbed, bioturbated close to its summit and is rich in illuvial clay (Bt horizon).
Magdalenian knapping floors were discovered within this layer.
w3.jura.chDie Einheit E4 besteht aus verwitterten Lössumlagerungen.
Das Sediment ist im oberen Teil biologisch gestört mit einem starken Anteil an Schwemmlehmen (Horizont Bt).
Sie enthält magdalénienzeitliche Silexschlagplätze.
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