The Verdesca landslide in the Agri Valley (Basilicata, Southern Italy): a new geological and geomorphological framework.

A landslide, to the west of Montemurro (a small village in Southern Italy), has recently caused damage to buildings and other infrastructures in an urbanized area, as a re- sult the development of new economic activities has been prohibited. The landslide was discovered last century and has been studied since the 1990’s using classical geotech- nical methods, the sliding body continues to move. In this paper, we will present the results of a study carried out using field surveys, geognostic investigations and TDR (Time Domain Reflectometry) measurements in order to reconstruct the stratigraphy of the sediments involved and to further understand the geological and geomorphological context of the slope. This study is part of a larger multidisciplinary project of which the results will also be presented in this paper. The landslide (rotational slide in the upper sector, developing into a translational slide in the lower part) affects Qua- ternary continental clastic deposits resting on a bedrock formed by Tertiary siliciclastic sediments of the GorgoglioneFlysch. TDR measurements did not show any significant movement during the period monitored (January 2013–January 2014). Slip zone geometries were hypothesized using inclinometric meaurements taken from previous studies, stratigraphic data and geomorphological interpretations of topographic scarps. Feedback from monitoring will confirm this hypothesis.