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 DECS007

Name

Stockheim fault.

Description

Composite source DECS007 corresponds to the east-dipping Stockheim fault. This fault is situated respectively 3 to 4 km, and 6 to 8 km east of the two faults defining source DECS006, but has a more north-northwesterly trend (Figure S4). We classify this fault as a separate source because it appears to be situated adjacent to a gap between the west-dipping Rurrand (DECS001) and Kirspenich faults (DECS008). The distance to the Rurrand fault is 3.5 km, but the distance to the Kirspenich fault is only 1.5 km. In addition, the Kirspenich and Stockheim faults are relatively well aligned. However, because of their opposite dip directions, the two faults are not combined into a single source.

Paleoseismic trenches

None

Vertical displacement data

The vertical displacement rate 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 0.009 – 0.020 mm/yr for DECS007.

Table S13. Compilation of data concerning vertical deformation rates of seismic source DECS007.

ID	Fault section	Offset (m)	Time period	Deformation rate (mm/yr)	Reference
27	Displacement of base of “Ältere Hauptterrasse” of the Rhine R.	Mean: 24.3 (n=3) Max: 40	Since 2.0 – 2.58 Ma	0.009 – 0.020	Based on data from Ahorner (1962)

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