Hasan Dagi Volcano | John Seach


Aksaray Province, Turkey

38.13 N, 34.17 E
summit elevation 3253 m

Hasan Dagi is a twin peaked volcano located 230 km SW of Ankara in central Turkey. The summit contains a 5 km wide caldera. Two terminal cones Big Mt. Hasan (3253 m) and Small Mt. Hasan (3069 m). Neolithic paintings show caldera formation in 7600-7500 BC. More recent paintings show pyroclastic flows that destroyed towns and villages in 620 BC.

Eruptions have produced lava flows, lava domes, and pyroclastic rocks. The total volume of erupted products is 354 cubic km, and covers an area of 760 sq km. The volcano contains weak fumarolic activity at the summit, and there is local melting of snow in winter. This indicates that Hasan Dagi is still a potentially active volcano.

Further reading
Dogan, A. Umran, et al. "An isobaric–isenthalpic magma mixing model for the Hasan Dagi volcano, Central Anatolia, Turkey." Bulletin of Volcanology 70.7 (2008): 797-804.

Deniel, Catherine, Erkan Aydar, and Alain Gourgaud. "The Hasan Dagi stratovolcano (Central Anatolia, Turkey): evolution from calc-alkaline to alkaline magmatism in a collision zone." Journal of volcanology and Geothermal Research 87.1-4 (1998): 275-302.

Hasan Dagi Volcano Eruptions

~ 620 BC, 7750 BC?