GREEK COASTAL MIRES: A PRELIMINARY STUDY OF THE AGOULINITSA PEATLAND, WESTERN PELOPONNESE


E. Sofikitis
G. Siavalas
A. Chatziapostolou
S. Kalaitzidis
K. Christanis
Résumé

The Agoulinitsa peatland formed on the western shore of the homonymous lake, which was drained in 1969 because of the emerging demand for agricultural land. This study is a preliminary attempt to determine the conditions that prevailed during peat formation. Shallow cores were obtained from the peatland and initial physical, chemical and mineralogical analyses were carried out. High ash yield and pH values indicate that peat accumulated under alkaline conditions with periods of high clastic material influx, while high electric conductivity values indicate increased influx of dissolved solids into the mire. The mineral matter consists mainly of clay minerals, quartz, calcite, halite, sylvite and pyrite. The distribution of these minerals with depth indicates that fresh-water conditions prevailed for a long period during peat accumulation at the central part of the peatland, whereas the sea-water influence was more intense to the south establishing slightly brackish conditions. All data suggest that the Agoulinitsa peatland was developed as a back-barrier mire formed at the southwestern part of the Agoulinitsa Lake, and hence it can be considered as a modern analogue of the Neogene lignite deposits occurring along the west coast of Péloponnèse

Article Details
  • Rubrique
  • Palaeontology, Stratigraphy and Sedimentology
Téléchargements
Les données relatives au téléchargement ne sont pas encore disponibles.
Références
American Society for Testing and Materials (ASTM), D3173, 1993. Moisture in the Analysis Sample of Coal and Coke. In 1996 Annual book of ASTM Standards, Standards Relating to Gaseous fuels; Coal and Coke. 05.05, 289-290, Philadelphia, PA., ASTM, 495pp.
Andrejko, M.J., Fiene, F., and Cohen, A.D., 1983. Comparison of ashing techniques for determination of the inorganic content of peats. In P.M. Jarrett (ed.), ASTM Special Technical Publication 820, Testing of Peats and Organic Soils. 5-19, Philadelphia, PA., ASTM, 241pp.
Bouzinos, Α., Broussoulis, J., and Christanis, K., 1994. Conservation and Management of Greek Fens: a "model" to avoid, Proceedings International Symposium "Conservation and Management of Fens", Warsaw-Biebrza, 6-10 June, 225-230.
Bouzinos, Α., Christanis, Κ., and Kotis, T., 1997. The Chimaditida Fen (W. Macedonia, Greece): a peat deposit lost, International Peat Journal, 7, 3-10.
Bouzinos, Α., Papazisimou, S., Christanis, Κ., and Tzedakis, P., 2001. High rate of peat accumulation in the tectonic depression of Katouna, western Greece, International Peat Journal, 10, 85-95.
Christanis, Κ., 1994. The genesis of the Nissi peatland (northwestern Greece) as an example of peat and lignite deposit formation in Greece, International Journal of Coal Geology, 26, 63-77.
Christanis, Κ., 1996. The peat resources in Greece. In E. Lappalainen (ed.), Global peat resources. 87-94, Finland, International Peat Society, 368pp.
Dellwig, O., Watermann, F., Brumsack, HJ., Gerdes, G., and Krumbein, W.E., 2001. Sulphur and iron geochemistry of Holocene coastal peats (NW Germany): a tool for palaeoenvironmental reconstruction, Palaeogeography, Palaeoclimatology, Palaeoecology, 167,359-379.
Diessel, C.F.K., 1992. Coal-bearing Depositional Systems, Berlin, Springer Verlag, 721pp.
Göttlich, Κ., 1990. Moor und Torfkunde, Stuttgart, E. Schweizerbart'sche Verlagsbuchhandlung, 529pp.
Joosten, Η., and Clarke, D., 2002. Wise use of mires and peatlands, Finland, International Mire Conservation Group and International Peat Society, 304pp.
Kalaitzidis, S., and Christanis, Κ., 2004. Mineral matter in Greek peat - a qualitative approach, Proc. of the 5' International Symposium on Eastern Mediterranean Geology, Thes Saloniki, Greece, 14-20 April, vol. 3, 1416-1419.
Kamberis, E., 1987. Geological and oil-geology study of NW Peloponnesus, Ph.D. Thesis, Athens Polytechnical School, Athens, Greece, 143pp.
Kearns, F., and Davison, Α., 1983. Field classification system of organic-rich sediments, Proc. Of Workshop Mineral matter in peat: its occurrence, form and distribution, Los Alamos, New Mexico, 26-39 September, 147-157.
Koukouvelas, I., Mpresiakas, Α., Sokos, E., and Doutsos, T., 1996. The tectonic setting and earthquake ground hazards of the 1993 Pyrgos earthquake, Péloponnèse, Greece, Journal of Geological Society of London, 153, 39-49.
Lappalainen, E. (ed.), 1996. Global peat resources, Finland, International Peat Society, 368pp.
López-Buendia, A.M., Bastida, J., Querol, X., and Whateley, M.K.G., 1999. Geochemical data as indicators of palaeosalinity in coastal organic-rich sediments, Chemical Geology, 157, 235-254.
Manariotis, I., and Yannopoulos, P., 2004. Adverse Effects on Alfeios River Basin and an Integrated Management Framework Based on Sustainability, Environmental Management, 34, 261-269.
Moore, E.S., and Bellamy, DJ., 1976. Peatlands, Berlin Heidelberg, New York, Springer, 221pp.
Papazisimou, S., 2002. Formation and evolution of coastal lignite seams in western Péloponnèse. Ph.D. Thesis, Dept. of Geology, Univ. Patras, Patras, 226pp.
Papazisimou, S., Bouzinos, Α., Christanis, Κ., and Tzedakis, P.C., 2000. The coastal asphalt fen of Keri, Zakynthos (Hellas), Proceedings of the 11th International Peat Congress, vol. I, Quebec, Canada, August 6-12, 58-69.
Papazisimou, S., Bouzinos, Α., Christanis, Κ., Tzedakis, P.C., and Kalaitzidis, S., 2002. The upland Holocene transitional mires of Elatia forest, Northern Greece, Wetlands, 22, 355-365.
Papazisimou, S., and Kalaitzidis, S., 2004. Quantitative mineral matter determination in lignites using X-Ray diffractometry and position sensitive detector (XRD-PSD), Proceedings of the 10' International Congress of the Geological Society of Greece, vol. XXXVI, Thessaloniki, April, 464-473.
Papazisimou, S., Kalaitzidis, S., Christanis, Κ., Cressey, G., and Valsami-Jones, E., 2004. Accurate Phase Quantification of Mineral Matter in Bulk Lignite Samples from Western Péloponnèse (Greece), Energy & Fuels, 18, 547-559.
Psilovikos, Α., 1992. Changes in Greek wetlands during the twentieth century: the cases of the Macedonian inland waters and of the river deltas of the Aegean and Ionian coasts, Proc. Of Workshop on Greek Wetlands, Thes Saloniki, Greece, 17-21 April 1989, 175-196.
Querol, X., Alastuey, Α., Zhuang, X., Hower, J.C., Lopez-Soler, Α., Plana, F., and Zeng, R., 2001. Petrology, mineralogy and geochemistry of the Permian and Triassic coals in the Leping area, Jiangxi Province, southeast China, International journal of Coal Geology, 48, 23-45.
Raymond, J.R., Andrejko, M.J., and Bardin, S.W., 1983. Techniques for applying scanning electron microscopy to the study of mineral matter in peat. In R.J. Raymond and M.J. Andrejko (eds), Mineral matter in peat. 169-179, Los Alamos, Los Alamos Laboratory, NM.
Schneekloth, H., 1981. Kartierung von Mooren. In F. Bender (ed.), Angewandte Geowissenschaften I. 35-37, Stuttgart, Enke.
Shotyk, W., 1988. Review of the inorganic geochemistry of peats and peatland waters, Earth-Science Reviews, 25, 95-176.
van der Molen, W., and Smits, H., 1962. Die Sackung in einem Moorgebiet in Nord-Griechenland (Philippi), Bremen, Unpubl. Report, 11pp.
Ward, C.R., 2002. Analysis and significance of mineral matter in coal seams, International Journal of Coal Geology, 50, 135-168.
Articles les plus lus par le même auteur ou la même autrice