Patterns and velocities of recent crustal movements in the Dutch part of the Roer Valley rift system
article
Presents an integration of geomorphological and geodetic data from the area of the 1992 Roermond earthquake. A dense network of lineaments is evident from major and minor terrain features, and drainage patterns also show structural control on a kilometre scale. These discontinuous terrain lineaments, often of anastomosing character, match known fault patterns and suggest that the upper crust is subdivided into many, relatively small (up to 10 km scale) wedge-shaped blocks. The wrenching component can be related to a left-lateral motion along the Variscan Front, and a subsequent right-lateral offset of the edge of the London-Brabant Masif. The analysis of a 117-years-long data set of vertical movements at 2922 geodetic bench-marks evidences significant differential movements, and corroborates the sense of relative motion given by the lineaments. -from Authors
Topics
TNO Identifier
232796
Source
Geologie en Mijnbouw, 73(2-4), pp. 157-168.
Pages
157-168