Santorini Greece Volcano

July 1, 2017 – 02:51 pm
Fira Santorini Myth and

Location: 36.4N, 25.4E
Elevation: 1, 850 feet (564 m)

The eruption of Santorini in Greece in 1, 650 B.C. was one of the largest (VEI=6) in the last 10, 000 years. About 7 cubic miles (30 cubic km) of rhyodacite magma was erupted. The plinian column during the initial phase of the eruption was about 23 miles (36 km) high. The removal of such a large volume of magma caused the volcano to collapse, producing a c aldera. Ash fell over a large area in the eastern Mediterranean and Turkey. The eruption probably caused the end of the Minoan civilization on the island of Crete.

Santorini is complex of overlapping shield volcanoes. Basalt and andesite lava flows that make the shield are exposed in the cliff below the town of Phira. Some of t he cliff is thought to be a caldera wall associated with an eruption 21, 000 year ago. Druitt and Francaviglia (1992) found evidence of at least 12 large explosive eruptions in the last 200, 000 years at Santorin i. The white layer at the top is the Minoan tephra from the 1, 650 B.C. eruption. Photography copyrighted by Robert Decker.

Exposure of about 150 feet (50 m) of Minoan tephra. The tephra consists of pumice, pyroclastic surge, and pyroclastic flow deposits. Photography copyrighted by Ro bert Decker.

Akroteri, a Minoan city on the south part of Thera, is being excavated. About 3-6 feet (1-2 m) of ash fell on the city which had a population of about 30, 000. The residents appear to have been successfully evacuated prior to the eruption. No bodies hav e been found in the ash like those at Vesuvius. Archeologists also reported that movable objects had been taken from the city. Photography copyrighted by Robert Decker.

The Kameni Islands formed after the caldera. Eleven eruptions since 197 B.C. have made the two islands. The most recent eruption at Santorini was in 1950 on Nea Kameni, the northern island. The eruption was phreatic and lasted less than a month. It co nstructed a dome and produced lava flows. Photography copyrighted by Robert Decker.

Sources of Information:

Decker, R., and Decker, B., 1989, Volcanoes: W.H. Freeman, New York, 285 p.

Doumas, C.G., 1983, Thera: Pompeii of the ancient Aegean: London, Thames&Hudson, 168 p.

Druitt, T.H., and Francaviglia, V., 1992, Caldera formation on Santorini and the physiography of the islands in the late Bronze Age: Bulletin of Volcanology, v.54, p. 484-493.

Druitt, T.H., Mellors, R.A., Plye, D.M., and Sparks, R.S.J., 1989, Explosive volcanism on Santorini, Greece: Geology Magazine, v. 126, p. 95-126.

Georgalas, G.C., 1962, Greece. Catalogue of the Active Volcanoes of the World including solfatara fields. 12, 40 p.

Sigurdsson, H., Carey, S., and Devine, J.D., 1990, Assessment of mass, dynamics, and environmental effects of the Minoan eruption of Santorini Volcano, in Hardy, D., (ed.), Thera and the Aegean world III, v. 2, London, Thera Foundation, p. 89-99.

Simkin, T., and Siebert, L., 1994, Volcanoes of the World: Geoscience Press, Tucson, Arizona, 349 p.

Sullivan, D.G., 1988, The discovery of Santorini Minoan tephra in western Turkey: Nature, v. 333, p. 552-554.


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Popular Q&A
when is the Santorini volcano,Greece expected to erupt again in the future? | Yahoo Answers

The next eruption has been announced to be in full blast within the following millenium at 03.00 pm on a Monday, give or take a few hours, days, years and millenniums.
Even so, it most likely will be an underwater eruption. So no worry.
You are safe to visit Santorini.

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