Small roadside outcrop near the village of Dedenborn in the N-Eifel, the type example of mullions.
The outcrop is situated in the steep to overturned limb of a regional series of upright folds with well-developed axial planar cleavage. The rocks consist of alternating psammite-pelite layers.
Janos Urai, G. Spaeth, Wouter van der Zee, Christoph Hilgers (2001). Evolution of mullion (boudin) structures in the Variscan of the Ardennes and Eifel. Journal of the Virtual Explorer online, 3,1
*Ilse Kenis, Janos Urai, Wouter van der Zee, Christoph Hilgers, Manuel Sintubin (2005). Rheology of fine-grained siliciclastic rocks in the middle crust – evidence from a combined structural and numerical analysis. Earth and Planetary Science Letters, 233,351-360
http://www.ged.rwth-aachen.de/index.php?cat=Research&subcat=Fractures_and_veins&page=Mullions_and_Boudins PhotoID156