Monte Erciyes, Hacılar, Kayseri, Turkey
Mount Erciyes, also known as Argaeus, is a volcano in Turkey. It is a large stratovolcano that is surrounded by many monogenetic vents and lava domes, and one maar. The bulk of the volcano is formed by lava flows of andesitic and dacitic composition. At some time in the past, part of the summit collapsed towards the east.
The volcano began to form in the Miocene. At first, a volcano farther east named Koç Dağ formed from lava flows. Then, again to the east, large explosive eruptions formed a caldera. During the Pleistocene, Erciyes proper grew inside the caldera together with a group of lava domes. Lateral eruptions of Erciyes may have generated ash layers in the Black Sea and the Mediterranean during the early Holocene.
The last eruptions occurred during the early Holocene and may have deposited ash as far away as Palestine; the occurrence of historical volcanism is uncertain. Future eruptions of Erciyes may endanger cities in the north.
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