Reicherter, Klaus, Hoffmann, Nadine, Lindhorst, Katja, Krastel, Sebastian , Fernández-Steeger, Tomás, Grützner, Christoph and Wiatr, Thomas (2011) Active basins and neotectonics: morphotectonics of the Lake Ohrid Basin (FYROM and Albania). Zeitschrift der Deutschen Gesellschaft für Geowissenschaften, 162 (2). pp. 217-234. DOI 10.1127/1860-1804/2011/0162-0217.

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Abstract

The Lake Ohrid Basin in FYROM (Former Yugoslav Republic of Macedonia) and Albania meets all criteria of an active, seismic landscape: linear step-like fault scarps in the landscape and under water within the lake. Post-glacial (or Late Pleistocene) bedrock fault scarps at Lake Ohrid are long-lived expressions of repeated surface faulting in tectonically active regions, where erosion cannot outpace the fault slip. Other morphotectonic features are wind gaps, wineglass-shaped valleys and triangular facets, which are well preserved. Generally, the faults and fault scarps are getting younger towards the basin centre, as depicted on seismic and hydroacoustic profiles. Additionally, mass movement bodies within the lake and also onshore (rockfalls, landslides, sub-aquatic slides, homogenites, turbidites) are likely to have been seismically triggered. These morphotectonic observations are in line with focal mechanisms of earthquakes in the greater Lake Ohrid area. We investigated the neotectonic history and tectonic geomorphology of the Lake Ohrid Basin by means of an integrated multidisciplinary approach, using tectonic geomorphology and a variety of geophysical and remote sensing methods.

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