Subsurface structure of Tympaki basin (Crete, Greece) based on well and geophysical dataSubsurface structure of Tympaki basin (Crete, Greece) based on well and geophysical data Πλήρης Δημοσίευση σε Συνέδριο Conference Full Paper 2015-10-292015enTympaki basin has been studied in the past years from a hydrogeological point of view. Whatsoever, less are known on the subsurface structure of the plain part of the basin in terms of sediments thicknesses and faults existence. A way of identifying in-ferred faults is the integrated use of geophysical and well-data which finally give an insight of the subsurface within a content of a well-established knowledge of the geo-logical regime of the study area. In this paper the use of 3D geological modelling technique is described as a mean to identify fault structures and horizon depths. The data used include the digital elevation model (DEM) of the area, the boundary sur-face between geologic formations and the lithostratigraphic data from wells, geo-physical measurements of Vertical Electrical Soundings (VES) and Transient Electro-magnetic Method (TEM). The first step was to develop a 3D stratigraphic model that approximates the subsurface position of the Plio-Quaternary and the Neogene depos-its. The inferred faults came out from this model were cross-checked with the TEM measurements providing an updated subsurface structure. All the newly identified faults and along with the depth of stratigraphic horizons give finally an overall tecton-ic pattern of the Tympaki basin.http://creativecommons.org/licenses/by/4.0/8th Congress of the Balkan Geophysical Society Manoutsoglou Emmanouil Μανουτσογλου Εμμανουηλ Soupios Pantelis Panagopoulos, Geōrgios D., 1966- Vafidis, Antonios, 1958- Geology--Surveys geological surveys geology surveys