| More

GEOMORPHOLOGY AND SEDIMENTOLOGICAL PROCESSES ALONG THE COASTAL ZONE BETWEEN LIVANATES AND AGIOS KONSTANTINOS (N. EVOIKOS GULF, CENTRAL GREECE)

Views: 357 Downloads: 374
K. Tsanakas, K. Gaki-Papanastassiou, S.E. Poulos, H. Maroukian
K. Tsanakas, K. Gaki-Papanastassiou, S.E. Poulos, H. Maroukian

Abstract


This study deals with aspects of geomorphology and nearshore marine processes in the coastal zone located between Livanates and Agios Konstantinos (North Evoikos Gulf, central Greece). Evoikos Gulf is a tectonic graben bounded by WNW-ESE trending normal faults; it can be further characterized as semi-closed marine basin with water depths exceeding 400m.The Coastal geomorphology is affected by active tectonics with the most prominent morphological features being the uplifted marine terraces and the well-developed deltaic fan of Xerias torrent. In the present investigation, detailed geomorphological mapping at a scale of 1:5000 was performed together with granulometric analysis, while nearshore wave and current activity related to sediment dynamics has been determined on the basis of wind-generated wave regime. The examined coastal zone consists of a series of alluvial cones and fans, Xerias fan being the largest among them, low cliffs, a cuspate foreland and beach zones of limited length, often hosting beachrock formations. The formation and evolution of the study area seems to be controlled by the limited terrestrial influxes, the relatively weak wave regime due to limited wave fetches distances, and the associated longshore currents that induces limited sediment transport.

Keywords


geomorphology; sediment dynamics; coastal erosion;

Full Text:

PDF

References


Armijio R., Meyer B., King G.C.P., Rigo A. and Papanastassiou D., 1996. Quaternary evolution of the

Corinth rift and its implications for the Late Cenozoic evolution of the Aegean, Geoph. J. Int., 126,

-53

Baud, A., Jenny, C., Papanikolaou, D., Sideris, C., Stampfli, G.M. 1991. New observations on Permian

stratigraphy in Greece and geodynamic implication. Bull. Geol. Soc. Greece, XXV/1, 187-206.

Carter, R.W.G., 1988. Coastal Environments, London: Academic Press, 617p.

Clement, B. 1983. Évolution géodynamique d’un secteur des Hellénides: l’Attique septentrionale. Annales

Société géologique du Nord, 101, 87–96.

Cundy, A., Gaki-Papanastassiou, K., Papanastassiou, D., Maroukian, H., Frogley, M. and T. Cane, 2009,

Geological and geomorphological evidence of recent coastal uplift along a major Hellenic normal

fault system (the Kamena Vourla fault zone, NW Evoikos Gulf, Greece)., Marine Geology, (under

publication).

Doutsos, T., Kokkalas S. 2001. Stress and deformation in the Aegean region. J. Struct. Geol., 23, 455-472.

Doutsos, T., Poulimenos, G., 1992. Geometry and kinematics of active faults and their seismotectonic significance

in the western Corinth-Patras rift (Greece). J. Struct. Geol., 14, 689-699.

Eliet, P., and R. Gawthorpe, 1995. Drainage development and sediment supply within rifts, examples

from the Sperchios basin, central Greece. J. Geol. Soc. London, 152, 883-893.

Gaki-Papanastasiou K., Maroukian H., Papanastassiou D. and Palyvos N., 1999 Geo-archaeology and

morphotectonics in the area of Livanates-Kynos-Arkitsa during the Holocene, Proc. 5th National

Gongr. of the Geological Society of Greece., 101-111.

Guernet, C., 1971. Etudes géologiques en Eubée et dans les régions voisines (Grèc). Thèse d’Etat Univ.

Paris, 395 pp., Paris.

IPCC, 2007. Climate Change 2007: The physical Science Basis Summary for Policymakers Contribution

of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate

XLIII, No 1 – 514

Table 3. Estimated values of potential longshore sediment transport (Q) per wind direction at the

different units (A-E).

UNIT A UNIT B UNIT C UNIT D UNIT E

W 10.4 - - - -

NW 16.7 1277.5 438.2 611.2 -

N 672.8 127.1 614.3 -624.2 932.4

NE - -330.7 -240.5 2.5 260.2

E - -6.7 -169.8 - -38.7

Total -645.7 +1067.2 +642.2 -10.5 +1153.9

Change, Richard Alley et al, Geneva, 18 pp.

Kokkalas, S., Xypolias, P., Koukouvelas, I., and Doutsos, T., 2006. Postcollisional contractional and extensional

deformation in the Aegean region, in Dilek, Y., and Pavlides, S., eds., Post-collisional tectonics

and magmatism in the Mediterranean region and Asia: Geological Society of America Special

Paper 409, p. 97–123, doi: 10.1130/2006.2409(06)

Komar, P.D., 1976. Beach Processes and Sedimentation, New Jersey, Englewood Cliffs: Prentice-Hall,

Inc., 429pp.

Meijer, P.T., Wortel, M.J.R., 1997. Present-day dynamics of the Aegean region: A model analysis of the

horizontal pattern of stress and deformation. Tectonics 16, 879-895.

Pirazzoli P., 1996, Sea level changes the last 20000 years. J Wiley p.211

Poulos S.E., Voulgaris G., Kapsimalis V., Collins M. and Evans G., 2002. Sediment fluxes and the evolution

of a riverine-supplied tectonically-active coastal system: Kyparissiakos Gulf, Ionian Sea (eastern

Mediterranean). (In:) Jones S.J., Frostick L.E. (eds) Sediment Flux to Basins: Causes, Controls

and Consequences. Journal of the Geological Society, 191: 247-266.

Roberts, S., and J. Jackson 1991. Active normal faulting in central Greece: an overview, in The Geometry

of Normal Faults, A.M. Roberts, G. Yielding, and B. Freeman (Editors), Geological Society Special

Publications 56, Geological Society, London, 125 - 142.

Roberts, G. P. and Koukouvelas, I., 1996. Structural and seismological segmentation of the Gulf of Corinth

Fault System: implications for models of fault growth. Annali di Geophysics XXXIX, 619-646.

US Army Corps of Engineers, 1984. Shore Protection Manual, Washington DC 21314.

Van Andel, T.H. and C. Perissoratis 2006. Late Quaternary depositional history of the North Evoikos

Gulf, Aegean Sea, Greece, Mar. Geol., 232, 157-172.

Westaway, R., 1991. Continental extension on sets of parallel faults: observational evidence and theoretical

models. In: Roberts, A.M., Yielding, G., Freeman, B. (Eds.), The Geometry of Normal Faults.

Geol. Soc. London Spec. Publ. 56, 143–169.

Woodward J.C., 1995. Patterns of Erosion and suspended Sediment Yield in Mediterranean River Basins.

(In:) Forster I.D.L. Gurnell A.M. & Webb B.W.(Eds), Sediment and water quality in river catchment.

Wiley, Chichester, 365-389.

Hellenic Army service, Topographic maps 1:50.000 sheets Pelasgia, Elateia, Livanates, 1979.

Institute of Geology and Mineral Exploration, Geological maps 1:50.000 sheets Pelasgia, Elateia, Livanates,


Refbacks

  • There are currently no refbacks.


Copyright (c) 2017 K. Tsanakas, K. Gaki-Papanastassiou, S.E. Poulos, H. Maroukian

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.