Geomorphic evidence of recent activity along the Vodice thrust fault in the Ljubljana Basin (Slovenia) - a preliminary study
作者： Frank Preusser , Miloš Bavec , Marko Vrabec , Petra Jamšek Rupnik , Lucilla Benedetti
DOI: 10.4401/AG-6252
关键词: Seismology 、 Structural basin 、 Geology 、 Quaternary 、 Thermoluminescence dating 、 Fault scarp 、 Fault (geology) 、 Seismic risk 、 Thrust fault 、 Magnitude (mathematics)
摘要: We investigated two prominent, ~ E-W trending scarps in Quaternary sediments, located close to the town of Vodice Ljubljana Basin (central Slovenia). By using detailed geomorphological analysis the scarps, field surveying, and structural observations deformed we conclude that are surface expression of a N-dipping thrust fault has been active during the Quaternary. From Optically Stimulated Luminescence Infrared Stimulated dating Quaternary sediments we estimate slip rate 0.1 0.3 mm a -1 last 133 ka. Using the published empirical fault-scaling relationships, that an earthquake magnitude 5.9 6.5 may be expected on Vodice thrust fault. The may, therefore, present major seismic hazard for densely populated urbanised region central Slovenia.
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