PLEISTOCENE PALAEOCLIMATIC EVOLUTION FROM AGIOS GEORGIOS CAVE SPELEOTHEM (KILKIS, N. GREECE)


Δημοσιευμένα: Jan 1, 2010
E. Dotsika
D. Psomiadis
D. Zanchetta
N. Spyropoulos
G. Leone
I. Tzavidopoulos
D. Poutoukis
Περίληψη
Palaeoclimatic reconstruction in N. Greece has been investigated in this study, using stable isotope analyses and U/Th dating of a speleothem (stalactite) from the cave of Agios Georgios (Kilkis). Sampling sequence was followed in detail in order to obtain high resolution analysis of the proxy. Speleothem δ18O entirely depends on two factors: changes in the δ18O of the percolation waters (a proxy for local rainfall δ18O) and the temperature of water-calcite fractionation inside the cave (a proxy for outside air temperatures). During periods of relatively stable temperatures, δ13C shifts are caused principally by variations in soil CO2 input and physico-chemical processes inside the cave. More important processes affect the δ13C signal of speleothem inside the cave are length of flow path and rates of CO2 degassing.The lower δ13C calcite values indicate greater respiratory activity of soils under wetter conditions. The stalagmite layers were dated through U/Th geochronological method, which places the carbonate precipitation in Middle Pleistocene (630-300ka BP). The isotopic composition of the layers was used in combination with the dating results to reconstruct the evolution of the area of Kilkis. Correlation with global climatic records shows that major climatic transitions that influenced northern hemisphere seem to have also affected the region of N. Greece.
Λεπτομέρειες άρθρου
  • Ενότητα
  • Γεώτοποι
Λήψεις
Τα δεδομένα λήψης δεν είναι ακόμη διαθέσιμα.
Αναφορές
Agusti, J., Anton, M., 2002. Mammoths, Sabertooths, and Hominids. Columbia Univ. Press, pp. 313.
Bar-Matthews, M., Ayalon, A., Kaufman, A., 1997. Late Quaternary climate in the eastern Mediterranean
region-inferences from the stable isotope systematics of speleothems of the Soreq cave (Israel). Quaternary
Research 47. 155–168.
Bond, G., Broecker, W., Johnsen, S., McManus, J., Labeyrie, L., Jouzel, J., Bonani, G., 1993. Correlations
between climate records from North Atlantic sediments and Greenland ice. Nature 365, 143–147.
Chappell, J., Shackleton, N.J., 1986. Oxygen isotope and sea level. Nature 324, 137–140.
Dansgaard, W., Johnsen, S.J., Clausen, H.B., Dahl-Jensen, D., Gundestrup, N.S., Hammer, C.U., Hvidberg,
C.S., Steffensen, J.P., Sveinbjornsdottir, A.E., Jouzel, J., Bond, G., 1993. Evidence for general
instability of past climate from a 250-kyr ice-core record. Nature 364, 218–220.
Ehlers, J., 1996. Quaternary and Glacial Geology. Wiley, Chichester.
EPICA community members, 2004. Eight glacial cycles from an Antarctic ice core. Nature 429, 623–628.
Hughes, P.D., Woodward, J.C., Gibbard, P.L., 2007. Middle Pleistocene cold stage climates in the Mediterranean:
New evidence from the glacial record. Earth and Planetary Science Letters, 253 (1-2), 50-56.
Imbrie, J., Hays, J.D., Martinson, D.G., McIntyre, A., Mix, A.C., Morley, J.J., Piasias, N.G., Prell, W.L.,
Shackleton, N.J., 1984. The orbital theory of Pleistocene climate: Support from a revised chronology
of the marine δ18O record. In: A.L. Berger et al. (Eds.), Milankovitch and Climate, Part I. Reidel,
Dordrecht, pp. 269–305.
Kostopoulos, D., Vasileiadou, K., 2006. The Greek Late Neogene-Quaternary ursids in relation to palaeogeography
and palaeoenvironment. Scientific annals, School of Geology, Aristotle University of Thessaloniki
, 285-292.
Ninkovich, D., Shackleton, N.J., 1975. Distribution, stratigraphic position and age of ash ‘‘L’’ in the
Panama Basin region. Earth and Planetary Science Letters 27, 20–34.
Psomiadis, D., Dotsika, E., Zisi, N., Pennos, C., Pechlivanidou, S., Albanakis, K., Syros, A., VaxeXLIII,
No 2 – 894
vanopoulos, M., 2009. Geoarchaeological study of Katarraktes cave system: Isotopic evidence for
environmental alterations. Géomorphologie : relief, processus, environnement, in press.
Shackleton, N.J., 1969. The last interglacial in the marine and terrestrial records. Proceedings of the Royal
Society, London B 174, 135–154.
Shackleton, N.J., 1987. Oxygen isotopes, ice volume and sea level. Quaternary Science Reviews 6, 183–190.
Shackleton, N.J., Imbrie, J., Hall, M.A., 1983. Oxygen and carbon isotope record of East Pacific core
V19-30: implications for the formation of deep water in the late Pleistocene North Atlantic. Earth and
Planetary Science Letters 65, 233–244.
Shackleton, N.J., Berger, A., Peltier, W.R., 1990. An alternative astronomical calibration of the Lower
Pleistocene timescale based on ODP Site 677. Transactions of the Royal Society of Edinburgh: Earth
Sciences 81, 251–261.
Street, F.A., Grove, A.T., 1979. Global maps of lake-level fluctuations since 30,000 yr B.P. Quaternary
Research 12, 83–118.
Tzedakis, P.C., Andrieu, V., de Beaulieu, J.-L., Crowhurst, S., Follieri, M., Hooghiemstra, H., Magri, D.,
Reille, M., Sadori, L., Shackleton, N.J., Wijmstra, T.A., 1997. Comparison of terrestrial and marine
records of changing climate of the last 500,000 years. Earth and Planetary Science Letters 150, 171–176.
Tzedakis, P.C., Andrieu, V., Birks, H.J.B., de Beaulieu, J.-L., Crowhurst, S., Follieri, M., Hooghiemstra,
H., Magri, D., Reille, M., Sadori, L., Shackleton, N.J., Wijmstra, T.A., 2001. Establishing a terrestrial
chronological framework as a basis for biostratigraphical comparisons. Quaternary Science Reviews
, 1583–1592.
Tzedakis, P.C., McManus, P.C., Hooghiemstra, H., Oppo, D.W., Wijmstra, T.A., 2003. Comparison of
changes in vegetation in northeast Greece with records of climate variability on orbital and suborbital
frequencies over the last 450,000 years. Earth and Planetary Science Letters 212, 197–212.
Tzedakis, P.C., Hooghiemstra, H., Pälike, H., 2006. The last 1.35 million years at Tenaghi Philippon: revised
chronostratigraphy and long-term vegetation trends. Quaternary Science Reviews, 25 (23-24),
-3430.
Waelbroeck, C., Labeyrie, L., Michel, E., Duplessy, J.C., McManus, J.F., Lambeck, K., Balbon, E.,
Labracherie, M., 2002. Sea-level and deep water temperature changes derived from benthic
foraminifera isotopic records. Quaternary Science Reviews 21, 295–305.
Zhao, J.X., Hu, K., Xu, H., Collerson, K.D., 2001. Thermal ionization mass spectrometry U–Th dating
of a hominid site in Nanjing, China. Geology 29, 27– 30.
Τα περισσότερο διαβασμένα άρθρα του ίδιου συγγραφέα(s)