✦ LIBER ✦

Visualization of tectonic structures in shallow-depth high-resolution ground-penetrating radar (GPR) profiles

✍ Scribed by Martin Meschede; Ulrich Asprion; Klaus Reicherter

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 313 KB
Volume: 9
Category: Article
ISSN: 0954-4879
DOI: 10.1046/j.1365-3121.1997.d01-25.x

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✦ Synopsis

Ground‐penetrating radar (GPR) is applied to detect subsurface tectonic structures and to map the geometry of faulted blocks. Tectonic interpretations from a profile crossing the graben fault and a grid in a second‐order graben structure providing a 3D data set are correlated to the structural inventory of the outcrop. Folded layers of the roll‐over anticline are identified by continuous curved reflectors and an increasing dip towards the main graben fault. Faults are indicated by arrays of reflector terminations. Variations in the water and clay content caused by karstification and brecciation on fault planes are displayed by changing amplitudes of the detected signal. The 3D visualization of the second‐order graben structure with a grid of GPR profiles illustrates the local stress pattern which coincides with structural observations in the outcrop and photo lineations.

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