Morphotectonic Analysis between Crete and Kasos

D. Lampridou, P. Nomikou, M. Alexandri, D. Papanikolaou, C. Hübscher, T. Ioannou, P. Sorotou, L. Ragia

Abstract

The morphotectonic structure of the offshore area lying between Crete and Kasos is studied on the basis of new detailed bathymetric data. The resulting bathymetric map is presented. Qualitative analysis of morphological slope values, as well as the analysis of the watershed at the eastern part of Crete, confirms that the current seabed topographic relief reflects intense tectonic activity. The high morphological slope values indicate well-defined morphotectonic features, which mainly trend SW-NE and, secondarily, SSW-NNE. The main large-scale tectonic structures trend SW-NE correspond to the marginal faults that bound the Crete-Kasos basin. The overall basin geometry is an elongated rectangular which is divided into seven sub-basins, and the deepest one (2800m) is located at the eastern part of the area. Moreover, the complex regime of the seafloor includes submarine canyons, landslides and a well-defined slump with vertical displacement more than 400m.

References

  1. Ambraseys, N.N. (2009) Earthquakes in the Mediterranean and middle east: A Multidisciplinary study of Seismicity up to 1900. Nicholas Ambraseys. Cambridge, UK: Cambridge University Press.
  2. Bohnhoff, M., Makris, J., Papanikolaou, D. and Stavrakakis, G. (2001) 'Crustal investigation of the Hellenic subduction zone using wide aperture seismic data', Tectonophysics, 343(3-4), pp. 239-262. doi: 10.1016/s0040-1951(01)00264-5.
  3. Chiocci, F.L., Cattaneo, A. and Urgeles, R. (2011) 'Seafloor mapping for geohazard assessment: State of the art', Marine Geophysical Research, 32(1-2), pp. 1- 11. doi: 10.1007/s11001-011-9139-8.
  4. England, P., Howell, A., Jackson, J., Synolakis, C., 2015. Palaeotsunamis and tsunami hazards in the Eastern Mediterranean. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 373, 20140374. doi:10.1098/rsta.2014.037.
  5. Gallen, S., Wegmann, K., Bohnenstiehl, D., Pazzaglia, F., Brandon, M., Fassoulas, C., 2014. Active simultaneous uplift and margin-normal extension in a forearc high, Crete, Greece. Earth and Planetary Science Letters 398, 11-24. doi:10.1016/j.epsl.2014.04.038.
  6. Guidoboni, E., Comastri, A., 1997. Journal of Seismology. Journal of Seismology 1, pp. 55-72. doi:10.1023/a:1009737632542.
  7. Howell, A., Jackson, J., England, P., Higham, T., Synolakis, C., 2015. Late Holocene uplift of Rhodes, Greece: evidence for a large tsunamigenic earthquake and the implications for the tectonics of the eastern Hellenic Trench System. Geophysical Journal International 203, pp.459-474. doi:10.1093/gji/ggv307.
  8. Huguen, C., Mascle, J., Chaumillon, E., Kopf, A., Woodside, J., Zitter, T., 2004. Structural setting and tectonic control of mud volcanoes from the Central Mediterranean Ridge (Eastern Mediterranean). Marine Geology 209, pp. 245-263. doi:10.1016/j.margeo.2004.05.002.
  9. Hughes Clarke, J.E., Mayer, L.A. and Wells, D.E. (1996) 'Shallow-water imaging multibeam sonars: A new tool for investigating seafloor processes in the coastal zone and on the continental shelf', Marine Geophysical Researches, 18(6), pp. 607-629. doi: 10.1007/bf00313877.
  10. Jongsma, D. (1977) 'Bathymetry and shallow structure of the Pliny and Strabo “trenches”, south of the Hellenic Arc'. Geol.Soc.Am.Bull.88, pp. 797-805. doi:10.1130/00167606(1977)88<797:- BASSOT>2.0.CO;2.
  11. Kahle, H.-G., Straub, C., Reilinger, R., McClusky, S., King, R., Hurst, K., Veis, G., Kastens, K. and Cross, P. (1998) 'The strain rate field in the eastern Mediterranean region, estimated by repeated GPS measurements', Tectonophysics, 294(3-4), pp. 237-252. doi: 10.1016/s0040-1951(98)00102-4.
  12. Kastens, K.A. (1991) 'Rate of outward growth of the Mediterranean ridge accretionary complex' Tectonophysics 199, pp 25-50. doi: 10.1016/0040- 1951(91)90117-B.
  13. Kiratzi, A., 2013. The January 2012 earthquake sequence in the Cretan Basin, south of the Hellenic Volcanic Arc: Focal mechanisms, rupture directivity and slip models. Tectonophysics 586, pp.160-172. doi:10.1016/j.tecto.2012.11.019.
  14. Kokinou, E., Tiago, A., Evangelos, K. and ekokinou (2012) 'Structural decoupling in a convergent forearc setting (southern Crete, eastern Mediterranean)78, Geological Society of America Bulletin, 124(7-8), pp. 1352-1364. doi: 10.1130/B30492.1.
  15. Kreemer, C., de Géologie, L., supérieure, E. normale, Paris, Chamot-Rooke, N. and 8538, C.U. (2004) 'Contemporary kinematics of the southern Aegean and the Mediterranean ridge', Geophysical Journal International, 157(3), pp. 1377-1392. doi: 10.1111/j.1365-246X.2004.02270.x.
  16. Kvalstad, T.J. (2007) 'What is the current “best practice” in offshore Geohazard investigations? A state-of-the-art review'. doi: 10.4043/18545-MS.
  17. Le Pichon, X., Angelier, J., Aubouin, J., Lyberis, N., Monti, S., Renard, V., Got, H., Hsü, K., Mart, Y., Mascle, J., Matthews, D., Mitropoulos, D., Tsoflias, P. and Chronis, G. (1979) 'From subduction to transform motion: A seabeam survey of the Hellenic trench system', Earth and Planetary Science Letters, 44(3), pp. 441-450. doi: 10.1016/0012-821x(79)90082-7.
  18. Le Pichon, X., Lallemant, S.J., Chamot-Rooke, N., Lemeur, D. and Pascal, G. (2002) 'The Mediterranean ridge backstop and the Hellenic nappes', Marine Geology, 186(1-2), pp. 111-125. doi: 10.1016/s0025- 3227(02)00175-5.
  19. Mascle, J., Jongsma, D., Campredon, R., Dercourt, J., Glaçon, G., Lecleach, A., Lybéris, N., Malod, J., Mitropoulos, D., 1982. The Hellenic margin from eastern Crete to Rhodes: Preliminary results. Tectonophysics86,pp.133-147. doi:10.1016/0040- 1951(82)90064-6.
  20. Mascle, J., Cleac'h, A., Jongsma, D., 1986. The eastern Hellenic margin from Crete to Rhodes: Example of progressive collision. Marine Geology 73, pp.145-168. doi:10.1016/0025-3227(86)90116-7.
  21. McKenzie, D. (1972) 'Active Tectonics of the Mediterranean region', Geophysical Journal International, 30(2), pp. 109-185. doi: 10.1111/j.1365- 246x.1972.tb02351.x.
  22. McKenzie, D. (1978) 'Active tectonics of the Alpine-- Himalayan belt: The Aegean sea and surrounding regions', Geophysical Journal International, 55(1), pp. 217-254. doi: 10.1111/j.1365-246x.1978.tb04759.x.
  23. Özbakir, A.D., Sengör, A., Wortel, M., Govers, R., 2013. The Pliny-Strabo trench region: A large shear zone resulting from slab tearing. Earth and Planetary Science Letters 375, pp.188-195. doi:10.1016/j.epsl.2013.05.025.
  24. Papazachos, B.C., Karakostas, V.G., Papazachos, C.B. and Scordilis, E.M. (2000) 'The geometry of the WadatiBenioff zone and lithospheric kinematics in the Hellenic arc', Tectonophysics, 319(4), pp. 275-300. doi: 10.1016/s0040-1951(99)00299-1.
  25. Peters, J., Huson, W., 1985. The Pliny and Strabo trenches (eastern Mediterranean): Integration of seismic reflection data and SeaBeam bathymetric maps. Marine Geology 64, pp.1-17. doi:10.1016/0025- 3227(85)90157-4.
  26. Shaw, B., Ambraseys, N.N., England, P.C., Floyd, M.A., Gorman, G.J., Higham, T.F.G., Jackson, J.A., Nocquet, J.-M., Pain, C.C., Piggott, M.D., (2008). Eastern Mediterranean tectonics and tsunami hazard inferred from the AD 365 earthquake. Nature Geoscience 1, pp. 268-276. doi:10.1038/ngeo151.
  27. Shaw, B., Jackson, J., 2010. Earthquake mechanisms and active tectonics of the Hellenic subduction zone. Geophysical Journal International. doi:10.1111/j.1365-246x.2010.04551.x.
  28. Veen, J.T., Boulton, S., Alçiçek, M., 2009. From palaeotectonics to neotectonics in the Neotethys realm: The importance of kinematic decoupling and inherited structural grain in SW Anatolia (Turkey). Tectonophysics 473, pp.261-281. doi:10.1016/j.tecto.2008.09.030.
Download


Paper Citation


in Harvard Style

Lampridou D., Nomikou P., Alexandri M., Papanikolaou D., Hübscher C., Ioannou T., Sorotou P. and Ragia L. (2017). Morphotectonic Analysis between Crete and Kasos . In Proceedings of the 3rd International Conference on Geographical Information Systems Theory, Applications and Management - Volume 1: GISTAM, ISBN 978-989-758-252-3, pages 142-150. DOI: 10.5220/0006387201420150


in Bibtex Style

@conference{gistam17,
author={D. Lampridou and P. Nomikou and M. Alexandri and D. Papanikolaou and C. Hübscher and T. Ioannou and P. Sorotou and L. Ragia},
title={Morphotectonic Analysis between Crete and Kasos},
booktitle={Proceedings of the 3rd International Conference on Geographical Information Systems Theory, Applications and Management - Volume 1: GISTAM,},
year={2017},
pages={142-150},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006387201420150},
isbn={978-989-758-252-3},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 3rd International Conference on Geographical Information Systems Theory, Applications and Management - Volume 1: GISTAM,
TI - Morphotectonic Analysis between Crete and Kasos
SN - 978-989-758-252-3
AU - Lampridou D.
AU - Nomikou P.
AU - Alexandri M.
AU - Papanikolaou D.
AU - Hübscher C.
AU - Ioannou T.
AU - Sorotou P.
AU - Ragia L.
PY - 2017
SP - 142
EP - 150
DO - 10.5220/0006387201420150