The island from Nisyros is stratovolcano at the eastern end of the Hellenic island elbow. This elbow of the volcanos is connected with the northern Subduction of the African plate under the Aegean microplate. Santorini, a better well-known volcano, is western of Nisyros. The lower surface of the island is mostly formed of hyaloclastite, by the lava rivers and of breccias, the structure of andesit. This rock through pyroclastic deposits and volcanic hoods of the Daciteaufbaus are covered with a cap. Pyroclastic the deposits are connected with two explosive phases of the volcano. Each phase was Plinian in the letter and as strongly produced high column of ash as 9-12 miles (15-20 kilometers) over the volcano. The collapse of the high columns of ash formed pyroclastic the deposits. The expenditure of the magma had broken largely enough off, summits of the volcano to arrange collapse and formed a Caldera. Before the two explosive phases some thousand years, which arose separately and to approximately 25,000 years, amounted to supposed. After the Caldera formed, eruption the lava hoods produced. A large lowest point, a RAM MOS and a Lakki (shown in mentioned above the photo), are straight east the center of the island. The west edge of this lowest point is formed by STR Elias, the highest point on the island. Mountain STR John is on the eastern side of the lowest point. The lowest point is provided steep with sides and its lower surface amounts to approximately 300 foot (100 m) over sea levels. Stefanos, a small explosion tub, is at the far end lowers. This opinion is from the north
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