The use of geophysical prospecting for imaging active faults in the Roer Graben, Belgium

摘要

As part of a paleoseismological investigation along the Bree fault scarp (western border of the Roer Graben), Various geophysical methods [electrical profiling, elec- Tromagnetic (EM) profiling, refraction seismic tests, elec- Trical tomography, ground-penetrating radar (GPR), and High-resolution reflection seismic profiles] were used to Locate and image an active fault zone in a depth range Between a few decimeters to a few tens of meters. These Geophysical investigations, in parallel with geomorpho- Logical and geological analyses, helped in the decision To locate trench excavations exposing the fault surfaces.