Space Shuttle photo STS058-0073-0036, looking west to Nisyros and Kos. Photo taken on October 19, 1993.
Kos has solfatara fields and hot springs. Most of the rocks are Pleistocene in age. There have not been any eruptions in the last 10,000 years. The solfataras have feeble hydrogen sulfide emanations and thin sulfur deposits.
Chemical composition of a volcanic rock from Kos (from Georgalas, 1962): SiO2 TiO2 Al2O3 FeO MnO MgO CaO Na2O K2O P2O5 58.8 0.37 18.13 3.91 - 2.44 5.85 4.02 4.10 0.15 - = not measured. FeO = FeO total.
Georgalas, G.C., 1962, Catalogue of the active volcanoes of the world including solfatara fields; Part XII Greece: International Association of Volcanology, Rome, Italy, 40 p.
Simkin, T., and Siebert, L., 1994, Volcanoes of the World: Geoscience Press, Tucson, Arizona, 349 p.
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