Hasandag-Keciboyduran Volcanic Complex
Stratovolcano · 3,253m · Turkiye
About Hasandag-Keciboyduran Volcanic Complex
Hasandag-Keciboyduran Volcanic Complex is a stratovolcano rising to 3,253 meters (10,673 feet) in Turkiye's European Volcanic Regions. No historical eruptions have been recorded, though the volcano is classified based on geological evidence of past activity. The volcano has produced 2 recorded eruptions.
Geography & Climate
Hasandag-Keciboyduran Volcanic Complex is located in Turkiye, within the Western Anatolian Volcanic Province of the broader European Volcanic Regions. Situated at 38.13° N, 34.17° E in the Northern Hemisphere, the volcano lies within a temperate climate zone. At 3,253 meters above sea level, Hasandag-Keciboyduran Volcanic Complex rises above the surrounding terrain into montane or subalpine conditions. The elevation creates distinct ecological zones along its flanks, from forested lower slopes to exposed rocky terrain near the summit. The volcanic landform is characterized as a cluster, which describes the physical shape and structure of the volcanic edifice as observed from the surface.
Geological Context
Hasandag-Keciboyduran Volcanic Complex is an intraplate volcano, meaning it formed away from any plate boundary. These volcanoes are often powered by hotspots — plumes of abnormally hot mantle material rising from deep within the Earth. Hotspot volcanoes like Hasandag-Keciboyduran Volcanic Complex tend to produce effusive eruptions with lava flows that can be relatively predictable, giving nearby communities in Turkiye more time to prepare. However, they can also produce explosive phases, particularly when magma interacts with groundwater. The dominant rock type is dacite, an intermediate to silica-rich volcanic rock. This composition typically produces more viscous magma, leading to more explosive eruptions with ash columns and pyroclastic flows. Andesitic and dacitic magmas build pressure before erupting, which is why volcanoes with this rock chemistry are often associated with Plinian-style eruptions that can send ash tens of kilometers into the atmosphere and disrupt aviation across entire regions.
Eruption History Summary
Hasandag-Keciboyduran Volcanic Complex has 2 recorded eruptions in the geological database, spanning from 7550 BCE to 6750 BCE. These eruptions span roughly 800 years of volcanic history.
GVP Reference Summary
The Hasandag-Keçiboyduran volcanic complex in Central Anatolia includes the massive double-peaked Hasan Dagi stratovolcano, which has undergone four episodes of caldera collapse, the latest of which formed a 4-5 km wide caldera at the summit. The modern edifice within the latest caldera is the youngest of four major basaltic-to-rhyolitic volcanic complexes dating back to the mid-Miocene. Andesitic-to-dacitic lava domes form the two principal summits, of which the westernmost is the highest and is capped by two nested craters. Lava domes and associated pyroclastic-flow deposits cover more than half the flanks. As defined by Uslular et al. (2021), this volcanic field also includes the Pliocene-Quaternary Keçiboyduran stratovolcano, along with numerous monogenetic features: 11 lava domes (andesitic to rhyolitic), 33 scoria cones (basaltic), one maar (basaltic), and 34 undifferentiated features. Interpretations of Neolithic paintings representing eruptions are controversial, but geologic evidence supports eruptive activity continuing into the Holocene. Uslular et al. (2021) reported a lava dome possibly as young as 9,000 years BP (U-Th/He, citing Friedrichs et al., 2020, and Schmitt et al., 2014).
— Smithsonian Institution, Global Volcanism Program
2 Recorded Eruptions
| Year | VEI | Type | Area |
|---|---|---|---|
| 6750 BCE | — | Uncertain Eruption | — |
| 7550 BCE | — | Uncertain Eruption | — |
Real-Time Data
USGS Alert Level
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Frequently Asked Questions About Hasandag-Keciboyduran Volcanic Complex
Is Hasandag-Keciboyduran Volcanic Complex an active volcano?+
Hasandag-Keciboyduran Volcanic Complex is classified as active based on credible evidence of past eruptions. Although its last known eruption was in prehistoric times, volcanologists consider it capable of erupting again.
When did Hasandag-Keciboyduran Volcanic Complex last erupt?+
The most recent recorded eruption of Hasandag-Keciboyduran Volcanic Complex occurred in 6750 BCE. The eruption was classified as a "Uncertain Eruption." Hasandag-Keciboyduran Volcanic Complex has 2 recorded eruptions in total.
How high is Hasandag-Keciboyduran Volcanic Complex?+
Hasandag-Keciboyduran Volcanic Complex has a summit elevation of 3,253 meters (10,673 feet) above sea level. At 3,253 meters, it is comparable in height to many significant mountain peaks and stands well above the tree line.
What type of volcano is Hasandag-Keciboyduran Volcanic Complex?+
Hasandag-Keciboyduran Volcanic Complex is classified as a Stratovolcano. Stratovolcanoes (also called composite volcanoes) are steep, conical volcanoes built up by many layers of hardened lava, tephra, and volcanic ash. They are among the most common and dangerous types, known for explosive eruptions.
Where is Hasandag-Keciboyduran Volcanic Complex located?+
Hasandag-Keciboyduran Volcanic Complex is located in Turkiye, in the European Volcanic Regions. More specifically, it lies within the Western Anatolian Volcanic Province. Its exact coordinates are 38.130° latitude, 34.170° longitude.
Is it safe to visit Hasandag-Keciboyduran Volcanic Complex?+
Hasandag-Keciboyduran Volcanic Complex can generally be visited, but as with any volcano, visitors should check local conditions and any advisory notices before traveling. Turkiye may have specific regulations for accessing volcanic areas. Guided tours are often the safest and most informative way to experience a volcano.
