Electronic Supplement to
A Model of Composite Seismic Sources for the Lower Rhine Graben, NW Europe

by Kris Vanneste, Thierry Camelbeeck, and Koen Verbeeck

Information sheet for composite seismic source DECS006

Name

Merode / Schafberg fault.

Description

Composite source DECS006 corresponds to the east-dipping Merode (or Schafberg) fault, a relatively short (15 km) fault defining the boundary between the Eifel mountains south of the Variscan front, and the Quaternary valley of the Rur (Roer) River (Figure S4). A parallel fault 2.5 to 3.5 km to the east, the east-dipping Birgel fault, is also included in this source. According to the maps of Ahorner (1962) and Knapp and Hager (1980), both faults traverse the Rur River, and die out slightly further SE. To the NW, the two faults merge north of a right bend of the Merode fault, and terminate ~3 km further north-west.

Paleoseismic trenches

Table S11. List of paleoseismic trenching studies on seismic source DECS006. Legend: UM = University of München.

Fault section	Trench site	Year	Institute	Reference
Merode / Schafberg fault	Untermaubach	2009	UM	Kübler et al. (2010)

Vertical displacement data

The vertical displacement rate of DECS006 was determined based on the map of Ahorner (1962) following the same procedure as outlined for DECS005. Thus, we obtain a vertical displacement rate of 0.007 – 0.010 mm/yr. However, as Ahorner (1962) reported offsets for the Birgel fault section only, we consider the maximum value to be twice as high, i.e. 0.020 mm/yr.

Table S12. Compilation of data concerning vertical deformation rates of seismic source DECS006.

ID	Type of evidence	Offset (m)	Time period	Deformation rate (mm/yr)	Reference
26	Displacement of base of “Ältere Hauptterrasse” of the Rhine R.	Mean: 17.5 (n=2) Max: 20	Since 2.0 – 2.58 Ma	0.007 – 0.010	Based on data from Ahorner (1962)

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