STUDY OF BEACHROCKS IN EAST ATTICA

PDF
Published: Jul 27, 2016
DOI: https://doi.org/10.12681/bgsg.11744
Keywords:
beachrocks Late Holocene coastal changes sea level
A. Karkani
National and Kapodistrian University of Athens, Faculty of Geology and Geoenvironment
N. Evelpidou
National and Kapodistrian University of Athens, Faculty of Geology and Geoenvironment
H. Maroukian
National and Kapodistrian University of Athens, Faculty of Geology and Geoenvironment
S. Kawasaki
Hokkaido University, Faculty of Engineering
Abstract

Sea level indicators, such as tidal notches and beachrocks, may provide valuable information for the relative sea level changes of an area. Beachrocks in particular have received various arguments concerning their use as reliable sea level indicators and their formation environment. This work focuses on the coasts of East Attica in order to trace the palaeoshorelines of the Upper Holocene through the study of beachrocks. The coastal zone was surveyed in detail by snorkelling and diving, in order to locate, map and sample beachrocks. The samples were studied under a SEM, which showed that the beachrocks are mainly composed of quartz grains, a few calcites and feldspars, while the carbonate cement is characterized with the presence of MgO at percentages between 5 and 7.8%. Based on correlations with published drillings in the study area, the studied beachrocks should not be older than 2000 years BP.

Article Details
  • Section
  • Geomorphology
Creative Commons License

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

Authors who publish with this journal agree to the following terms:

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution Non-Commercial License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g. post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. Authors are permitted and encouraged to post their work online (preferably in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.

Downloads
Download data is not yet available.
References
Ambraseys, N.N. and Jackson, J.A., 1998. Faulting associated with historical and recent earthquakes
in the Eastern Mediterranean region, Geophys. J. Int., 133, 390- 406.
Baeteman, C., 1985. Late Holocene Geology of the Marathon plain, J. Coast. Res., 1(2), 173-185.
Barreto, A.M.F., Bezerra, F.H.R., Suguio, K., Tatumi, S.H., Yee, M., Paiva, R.P. and Munita, C.S.,
Late Pleistocene marine terrace deposits in northeastern Brazil: sea-level changes and
tectonic implications, Palaeogeogr., Palaeoclimatol., Palaeoecol., 179, 57-69.
Chowdhury, S.Q., Fazlul Haq, A.T.M. and Hasan, K., 1997. Beachrock in St. Martin's Island,
Bangladesh: Implications of sea level changes on beachrock cementation, Mar. Geod., 20(1),
-104.
Desruelles, S., Fouache, E., Pavlopoulos, K., Dalongeville, R., Peulvast, J.P., Coquinot, Y. and
Potdevin, J.-L., 2004. Beachrocks et variations recentes de la ligne de rivage en Mer Egee dans
l ensemble insulaire Mykonos-Delos-Rhenee (Cyclades, Grece), Geomorphologie, 1, 5-18.
Desruelles, S., Fouache, E., Ciner, A., Dalongeville, R., Pavlopoulos, K., Kosun, E., Coquinot, Y.
and Potdevin, J.-L., 2009. Beachrocks and sea level changes since Middle Holocene:
comparison between the insular group of Mykonos-Delos-Rhenia (Cyclades, Greece) and the
southern coast of Turkey, Glob. Planet. Change, 66, 19-33.
Erginal, A.E., Kıyak, N.G. and Öztürk, B., 2010. Investigation of Beachrock Using Microanalyses
and OSL Dating: A Case Study from Bozcaada Island, Turkey, J. Coast. Res. 262, 350-358.
Evelpidou, N., Karkani, A., Kampolis, I. and Pirazzoli, P., submitted. Late Holocene shorelines in
East Attica (Greece), Quat. Int., submitted.
Freyberg, V.B., 1951. Das Neogen gebiet nordwestlich Athen, Subsurface Research Department,
Ministry of Coordination, Special Publication 1, 85-86.
Ganas, A., Pavlides, S. and Karastathis, V., 2005. DEM-based morphometry of range-front
escarpments in Attica, central Greece, and its relation to fault slip rates, Geomorphology, 65,
-319.
Gischler, E., 2007. Beachrock and Intertidal Precipitates. In: Nash, D.J. and McLaren, S.J., eds.,
Geochemical Sediments and Landscapes, 365-390, Oxford, Blackwell Publishing Ltd.
Goodwin, I. D., 2008. Beachrock. In: Gornitz, V., ed., Encyclopedia of Paleoclimatology and
Ancient Environments, 89-90. Netherlands, Springer.
Hopley, D., 1986. Beachrock as a sea-level indicator, In: van der Plassche, O., ed., Sea-level
Research: a manual for the collection and evaluation of data, 157-173. Norwich, Geo Books.
Karkani, A., 2012. Study of the beachrocks of East Attica, Master thesis, National and Kapodistrian
University of Athens, Faculty of Geology and Geoenvironment, 140 pp.
Kelletat, D., 2006. Beachrock as sea-level indicator? Remarks from a geomorphological point of
view, J. Coast. Res., 22(6), 1555-1564.
Kindler, P. and Bain, R.J., 1993. Submerged Upper Holocene beachrock on San Salvador Island,
Bahamas: implications for recent sea-level history, Geol. Rundsch., 82(2), 241-247.
Mauz, B., Vacchi, M., Green, A., Hoffmann, G. and Cooper, A., 2015. Beachrock: A tool for
reconstructing relative sea level in the far-field, Mar. Geol., 362, 1-16.
Mettos, A., Ioakim, Ch. and Rondoyanni, Th., 2000. Palaeoclimatic and palaeogeographic evolution
of Attica-Beotia (Central Greece), Special Publication - Geological Society of Greece, 9,
-196.
Papanikolaou, D. and Papanikolaou, I., 2007. Geological, geomorphological and tectonic structure
of NE Attica and seismic hazard implications for the northern edge of the Athens Plain, Bull.
Geol. Soc. Greece, 40, 425-438.
Pavlopoulos, K., Karkanas, P., Triantafyllou, M., Karyballis, E., Tsourou, T. and Palyvos, N., 2006.
Paleoenvironmental Evolution of the Coastal plain of Marathon, Greece, during the Late
Holocene: Depositional environment, Climate, and Sea Level Changes, J. Coast. Res., 22(2),
-438.
Shennan, I., Long, A.J. and Horton, B.P., 2015. Handbook of Sea-Level Research, Chichester, John
Wiley & Sons Ltd.
Tatumi, S.H., Kowata, E.A., Gozzi, G., Kassab, L.R.P., Suguio, K., Barreto, A.M.F. and Bezerra,
F.H.R., 2003. Optical dating results of beachrock, eolic dunes and sediments applied to sealevel
changes study, J. Lumin., 102-103, 562-565.
Thomas, P.J., 2009. Luminescence Dating of Beachrock in the Southeast Coast of India - Potential
for Holocene Shoreline Reconstruction, J. Coast. Res., 25(1), 1-7.
Triantaphyllou, M., Kouli, K., Tsourou, T., Koukousioura, O., Pavlopoulos, K. and Dermitzakis,
M., 2010. Palaeoenvironmental changes since 3000 B.C. in the coastal marsh of Vravron
(Attiki, SE Greece), Quat. Int., 216(1-2), 14-22.
Most read articles by the same author(s)