Gerok, D., Bitinas, A.
Geophysical study of palaeo-incisions in the
Šventoji–Būtingė coastal area, north-west Lithuania
Palaeo-incisions (palaeo-tunnels, tunnel valleys, buried
valleys, etc.) comprise the most prominent features in the sub-Quaternary
surface covered by the Scandinavian continental ice sheets. An exception is the
Scandinavian crystalline bedrock region. Palaeo-incisions are objects of
Quaternary geology both from scientific and practical point of view and have
been previously mapped along the Lithuanian coastal area using gravimetric and
transient electromagnetic methods, complemented by traditional drilling. This
paper presents an approach for high-resolution identification of the
palaeo-incisions in the Šventoji–Būtingė coastal area of north-western
Lithuania. Several geophysical methods have been tested, including shallow
seismic reflection profiling, electrical tomography and ground-penetrating
radar. A combination of shallow seismic reflection and electrical tomography
profiling provides an optimal survey strategy for high-resolution
investigations of palaeo-incisions.