Definition of inferred faults using 3D geological modeling techniques: A case study in Tympaki Basin in Crete, Greece

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Published: Jan 24, 2013
DOI: https://doi.org/10.12681/bgsg.11087
Keywords:
geological structure 3D geological modelling technique inferred faults
G. Panagopoulos
Technical University of Crete, Dept. of Mineral Resources Engineering, Research Unit of Geology
E. Giannakakos
Technical University of Crete, Dept. of Mineral Resources Engineering, Research Unit of Geology
E. Manoutsoglou
Technical University of Crete, Dept. of Mineral Resources Engineering, Research Unit of Geology
E. Steiakakis
Technical University of Crete, Dept. of Mineral Resources Engineering, Laboratory of Applied Geology
P. Soupios
Department of Natural Resources & Environment, Technological Educational Institute of Crete
A. Vafidis
Technical University of Crete, Dept. of Mineral Resources Engineering, Laboratory of Applied Geophysics
Abstract
The purpose of this paper is to recognize inferred faults in Tympaki basin (Crete island) which cannot be observed on the surface, as the area is covered by recent deposits. The identification of the faults is crucial for the study of the sea-water intrusion in Tympaki basin that has been observed during the last years. 3D geological modelling techniques were used for reaching the aforementioned goal. The data used include the digital elevation model (DEM) of the area, the boundary surface between geologic formations and the litho - stratigraphic logs of thirty nine (39) wells. Initially a 3D stratigraphic model was set-up depicting the spatial extension of Plio-Quaternary and Neogene deposits. Next, with emphasis on the litho - stratigraphic logs of the wells, the boundary between the geological formations was defined in a 3D space. The regional unconformity between the Plio-Quaternary and Neogene formations is possibly the result of tectonic activity of inferred faults. The traces of the inferred faults were drawn and they were compared with the faults suggested by previous studies.
Article Details
  • Section
  • Tectonics and Geodynamics
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