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In absence of core samples and open-hole well-log data, the broken bits of rock removed from the borehole during the drilling process represent in many cases the only lithological data that is recovered from a well. The main objective of this study was to build up a lithological profile and to use the data in order to improve the knowledge about the local geology (Quaternary deposits). Lithological information at shallow depth is generally used to better understand the local site effects, known to play an importan...