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Palaeotemperature estimation of the pyroclastic deposit covering the pre-Minoan palaeosol at Megalochori Quarry, Santorini (Greece): Evidence from magnetic measurements

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Abstract

Thermal remanent magnetization analyses were carried out on ceramic fragments and lithic clasts embedded in the first pumice fall deposits of the Minoan eruption. The aim of this study is to estimate the equilibrium temperature after deposition of these pyroclastic fall deposits and their thermal effect on the pre-Minoan surface. A total of 30 samples from 22 independent ceramic fragments and 20 samples from 14 lithic clasts have been studied. Samples were collected from the Megalochori Quarry, located at the southern part of Santorini island. Stepwise thermal demagnetization reveals that the ceramics were mostly re-heated at temperatures around 140–180°C; in few ceramics a higher temperature component is also present, probably related to the original heating or the use of the ceramics before the eruption. Thermal demagnetization of the lithic clasts shows similar results with slightly higher re-heating temperatures, around 180–240°C. The estimated temperatures represent the equilibrium temperatures obtained after the deposition of the pumice fall and show that the pyroclastic fall deposits at a distance of around 6 km from the eruption vent maintained a temperature high enough to re-heat the buried ceramics at temperatures around 140–180°C.

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References

  1. Aramaki S. and Akimoto S., 1957. Temperature estimation of pyroclastic deposits by natural remanent magnetism. Am. J. Sci., 255, 619–627.

  2. Bardot L., 2000. Emplacement temperature determinations of proximal pyroclastic deposits on Santorini, Greece, and their implications. Bull. Volcanol., 61, 450–467.

  3. Bardot L. and McClelland E., 2000. The reliability of emplacement temperature estimates using palaeomagnetic methods: A case study from Santorini, Greece. Geophys. J. Int., 143, 39–51.

  4. Bardot L., Thomas R. and McClelland E., 1996. Emplacement temperatures of pyroclastic deposits on Santorini deduced from palaeomagnetic measurements: constraints on eruption mechanisms. In: Morris A. and Tarling D.H. (Eds.), Palaeomagnetism and Tectonics of the Mediterranean Region. Geol. Soc. London Spec. Publ., No. 105, 345–357.

  5. Bond A. and Sparks R.S., 1976. The Minoan eruption of Santorini, Greece. J. Geol. Soc. London, 132, 1–16.

  6. Chadima M. and Hrouda F., 2006. Remasoft 3.0 a user-friendly paleomagnetic data browser and analyzer. Travaux Géophysiques, XXVII, 20–21.

  7. Cioni R., Gurioli L., Sbrana A. and Vougioukalakis G., 2000. Precursory phenomena and destructive events related to the Late Bronze Age Minoan (Thera, Greece) and AD 79 (Vesuvius, Italy) Plinian eruptions; inferences from the stratigraphy in the archaeological areas. In: McGuire W.G., Griffiths D.R., Hancock P.L. and Stewart I.S. (Eds.), The Archaeology of Geological Catastrophes. Geol. Soc. London Spec. Publ., No. 171, 123–141.

  8. Cioni R., Gurioli L., Lanza R. and Zanella E., 2004. Temperatures of A.D. 79 pyroclastic density currents deposits (Vesuvius, Italy). J. Geophys. Res., 109, B02207, DOI: 10.1029/2002JB002251.

  9. Clement B.M., Conner C.B. and Graper G., 1993. Paleomagnetic estimate of the emplacement temperature of the long-runout Nevado De Colima Volcanic debris avalanche deposit, Mexico. Earth Planet. Sci. Lett., 120, 499–510.

  10. Di Vito M., Zanella E., Gurioli L., Lanza R., Sulpizio R., Bishop J., Tema E., Boenzi G. and Laforgia E., 2009. The Afragola settlement near Vesuvius, Italy: The destruction and abandonment of a Bronze Age village revealed by archaeology, volcanology and rock-magnetism. Earth Planet. Sci. Lett., 277, 408–421.

  11. Doumas Ch., 1983. Thira: Pompeii of the Ancient Aegean. Thames and Hudson, London, U.K.

  12. Downey W.S. and Tarling D.H., 1984. Archaeomagnetic dating of Santorini volcanic eruptions and fired destruction levels of Late Minoan civilization. Nature, 309, 519–523.

  13. Druitt T.H., Mellors R.A., Pyle D.M. and Sparks R.S.J., 1989. Explosive volcanism on Santorini, Greece. Geol. Mag., 126, 95–126.

  14. Druitt T.H., Edwards L., Mellors R.A., Pyle D.M., Sparks R.S.J., Lanphere M., Davies M. and Barreirio B., 1999. Santorini Volcano. Geol. Soc. Mem., 19, 165.

  15. Friedrich L.W. and Heinemeier J., 2009. The Minoan eruption of Santorini radiocarbon dated to 1613±13 BC: Geological and stratigraphic considerations. In: Warburton D.A. (Ed.), Time’s Up! Dating the Minoan Eruption of Santorini. Acts of the Minoan Eruption Chronology Workshop. Monographs of the Danish Institute at Athens 10, Aarhus University Press, Aarhus, Denmark, 57–63.

  16. Friedrich L.W. and Sigalas N., 2009. The effects of the Minoan eruption of Santorini, visible at various archaeological sites on Santorini, Greece. In: Warburton D.A. (Ed.), Time’s Up! Dating the Minoan Eruption of Santorini. Acts of the Minoan Eruption Chronology Workshop. Monographs of the Danish Institute at Athens 10, Aarhus University Press, Aarhus, Denmark, 91–100.

  17. Gurioli L., Pareschi M.T., Zanella E., Lanza R., Deluca E. and Bisson M., 2005. Interaction of pyroclastic density currents with human settlements: Evidence from ancient Pompeii. Geology, 336, 441–444, DOI: 10.1130/G21294.1.

  18. Heiken G. and McCoy F., 1984. Caldera development during the Minoan eruption, Thera, Cyclades, Greece. J. Geophys. Res., 89(B10), 8441–8462.

  19. Heiken G. and McCoy F., 1990. Precursory activity to the Minoan eruption, Thira, Greece. In: Hardy D.A., Keller J., Galanopoulos V.P., Flemming N.C. and Druitt T.H. (Eds), Thera and the Aegean World III. Vol. 2, Earth Sciences. The Thera Foundation, London, U.K., 79–88.

  20. Hoblitt R.P. and Kellogg K.S., 1979. Emplacement temperatures of unsorted and unstratified deposits of volcanic rock debris as determined by paleomagnetic techniques. Geol. Soc. Amer. Bull., 90, 633–642.

  21. Kent D.V., Ninkovitch D., Pescatore T. and Sparks R.S.J., 1981. Palaeomagnetic determination of emplacement temperature of the Vesuvius AD 79 pyroclastic deposits. Nature, 290, 393–396.

  22. Lesti C., Porreca M., Giordano G., Mattei M., Cas R.A.F., Wright H.M.N., Folkes C.B. and Viramonte J., 2011. High-temperature emplacement of the Cerro Galan and Toconquis Group ignimbrites (Puna plateau, NW Argentina) determined by TRM analyses. Bull. Volcanol., 73, 1535–1565, DOI: 10.1007/s00445-011-0536-2.

  23. Lowrie W. and Fuller M., 1971. On the alternating field demagnetization characteristics of multidomain thermoremanent magnetization in magnetite. J. Geophys. Res., 76, 6339–6349.

  24. McClelland-Brown E.A., 1982. Discrimination of TRM and CRM by blocking-temperature spectrum analysis. Phys. Earth Planet. Inter., 30, 405–414

  25. McClelland E. and Druitt D.H., 1989. Palaeomagnetic estimates of emplacement temperatures of pyroclastic deposits on Santorini, Greece. Bull. Volcanol., 51, 16–27. DOI: 10.1007/BF01086758

  26. McClelland E. and Thomas R., 1990. A palaeomagnetic study of Minoan age tephra from Thera. In: Hardy D.A., Keller J., Galanopoulos V.P., Flemming N.C. and Druitt T.H. (Eds), Thera and the Aegean World III. Vol. 2, Earth Sciences. The Thera Foundation, London, U.K., 129–138.

  27. McClelland E., Kondopoulou D., Westphal M. and Sophos Ph., 1998. Palaeomagnetic estimation of emplacement temperatures of plinian airfalls on Santorini, Greece. In: Casale R., Fytikas M., Sigvaldasson G. and Vougioukalakis G. (Eds.), The European Laboratory Volcanoes. Proceedings of the 2nd workshop, Santorini, Greece, 2–4 May 1996. Office for Official Publications of the European Communities, Luxembourg.

  28. McCoy W.F., 2009. The eruption within the debate about the date. In: Time’s Up! Dating the Minoan Eruption of Santorini. Acts of the Minoan Eruption Chronology Workshop. Monographs of the Danish Institute at Athens 10, Aarhus University Press, Aarhus, Denmark, 73–90.

  29. McCoy F. and Heiken G., 2000. The Late-Bronze Age explosive eruption of Thera (Santorini), Greece: Regional and local effects. Geol. Soc. Amer. Spec. Papers, 345, 43–70.

  30. Paterson G.A., Roberts A.P., MacNiocaill C., Muxworthy A.R., Gurioli L., Viramonte J.G. and Navarro C., 2010. Paleomagnetic determination of emplacement temperatures of pyroclastic deposits: an underutilised tool. Bull Volcanol., 72, 309–330, DOI: 10.1007/s00445-009-0324-4.

  31. Pichler H. and Friedrich W., 1980. Mechanism of the Minoan eruption of Santorini. In: Doumas C. (Ed.), Thera and the Aegean World II. Thera and the Aegean World, London, U.K., 9–14.

  32. Porreca M., Mattei M., MacNiocaill C., Giordano G., McClelland E. and Funiciello R., 2008. Paleomagnetic evidence for low-temperature emplacement of the phreatomagmatic Peperino Albano ignimbrite (Colli Albani volcano, Central Italy). Bull. Volcanol., 70, 877–893, DOI: 10.1007/s00445-007-0176-8.

  33. Pullaiah G.E., Irving E., Buchan K.L. and Dunlop D.J., 1975. Magnetization changes caused by burial and uplift. Earth Planet. Sci. Lett., 28, 133–143.

  34. Sparks R.S.J. and Wilson C.J.N., 1990. The Minoan deposits: a review of their characteristics and interpretation. In: Hardy D.A., Keller J., Galanopoulos V.P., Flemming N.C. and Druitt T.H. (Eds), Thera and the Aegean World III. Vol. 2, Earth Sciences. The Thera Foundation, London, U.K., 89–99.

  35. Sulpizio R., Zanella E. and Macias J.L., 2008. Deposition temperature of some PDC deposits from the 1982 eruption of El Chichon volcano (Chiapas, Mexico) inferred from rock magnetic data. J. Volcanol. Geotherm. Res., 175, 494–500, DOI: 10.1016/j.jvolgeores.2008.02.024.

  36. Zanella E., Gurioli L., Pareschi M.T. and Lanza R., 2007. Influences of urban fabric on pyroclastic density currents at Pompeii (Italy): 2. Temperature of the deposits and hazard implications. J. Geophys. Res., 112, B05214, DOI: 10.1029/2006JB004775.

  37. Zanella E., Gurioli L., Lanza R., Suplizio R. and Bontempi E., 2008. Deposition temperature of the AD 472 Pollena pyroclastic density current deposits, Somma-Vesuvius, Italy. Bull. Volcanol., 70, 1237–1248, DOI: 10.1007/s00445-008-0199-9.

  38. Zijderveld J.D.A., 1967. A.C. demagnetization of rocks: Analysis of results. In: Collinson D.W., Creer K.M. and Runcorn S.K. (Eds.), Methods in Palaeomagnetism. Elsevier, Amsterdam, The Netherlands.

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Correspondence to Evdokia Tema.

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Tema, E., Kondopoulou, D. & Pavlides, S. Palaeotemperature estimation of the pyroclastic deposit covering the pre-Minoan palaeosol at Megalochori Quarry, Santorini (Greece): Evidence from magnetic measurements. Stud Geophys Geod 57, 627–646 (2013). https://doi.org/10.1007/s11200-013-0601-8

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Keywords

  • deposition temperature
  • thermal remanent magnetization
  • Minoan eruption
  • Santorini Island