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2D and 3D imaging of the metamorphic carbonates at Omalos plateau/polje, Crete, Greece by employing independent and joint inversion on resistivity and seismic data

Hamdan Hamdan, Oikonomou Nikolaos, Kritikakis Georgios, Andronikidis Nikolaos, Manoutsoglou Emmanouil, Vafeidis Antonios, Pagratis Pagratis, Apostolidou Georgina

Πλήρης Εγγραφή


URI: http://purl.tuc.gr/dl/dias/11F586DE-6764-4075-9F68-18972D7C71CD
Έτος 2012
Τύπος Δημοσίευση σε Περιοδικό με Κριτές
Άδεια Χρήσης
Λεπτομέρειες
Βιβλιογραφική Αναφορά H. Hamdan, N. Economou, G. Kritikakis, N. Andronikidis, E. Manoutsoglou, A. Vafidis, P. Pangratis and G. Apostolidou, "2D and 3D imaging of the metamorphic carbonates at Omalos plateau/polje, Crete, Greece by employing independent and joint inversion on resistivity and seismic data", Int. J. Speleol., vol. 41, no. 2, pp. 199-209, 2012. doi:http://dx.doi.org/10.5038/1827-806X.41.2.7 https://doi.org/http://dx.doi.org/10.5038/1827-806X.41.2.7
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Περίληψη

A geophysical survey carried out at Omalos plateau in Chania, Western Crete, Greece employed seismic as well as electrical tomography methods in order to image karstic structures and the metamorphic carbonates (Tripali unit and Plattenkalk group) which are covered by post-Mesozoic deposits (terra rossa, clays, sands and gravels). The geoelectrical sections image the metamorphic carbonates which exhibit a highly irregular relief. At the central part of the plateau the thickness of post-Mesozoic deposits (terra rossa, clays, sands and gravels) ranges from 40-130 m. A 3D resistivity image was generated by inverting resistivity data collected on a grid to the south west at the Omalos plateau. The 3D resistivity image delineated a karstic structure at a depth of 25 to 55m. On the same grid the depth to the top of the karstified carbonates ranges from 25-70 m. This is also verified on the resistivity sections and seismic velocity sections along lines 5 and 7 of the above mentioned grid which are derived from the cross-gradients joint inversion.

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