Hasan Dagi

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 38.13°N
  • 34.17°E

  • 3253 m
    10670 ft

  • 213002
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Hasan Dagi.

The Global Volcanism Program has no Weekly Reports available for Hasan Dagi.

The Global Volcanism Program has no Bulletin Reports available for Hasan Dagi.

The massive double-peaked stratovolcano Hasan Dagi in Central Anatolia has undergone four episodes of caldera collapse, the latest of which formed a 4-5 km wide caldera at the summit. The modern edifice is the youngest of four major basaltic-to-rhyolitic volcanic complexes dating back to the mid Miocene and was constructed within the latest caldera. 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 blanket more than half the flanks of the Mount Hasan volcanic complex. A group of more than 25 Quaternary cinder cones, maars, and lava flows dot the plains surrounding Hasan Dagi. Interpretations of neolithic paintings representing eruptions from Hasan Dagi are controversial, but geologic evidence supports eruptive activity continuing into the Holocene.

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 6750 BCE ± 50 years ] [ Unknown ] Uncertain    
[ 7550 BCE ± 50 years ] [ Unknown ] Uncertain    

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.



Cones
Feature Name Feature Type Elevation Latitude Longitude
Obruk Cone
Yilanli Dagi Cone


Domes
Feature Name Feature Type Elevation Latitude Longitude
Gros Hasan Dagi Dome 3253 m
Petit Hasan Dagi Dome 3069 m


Thermal
Feature Name Feature Type Elevation Latitude Longitude
Kurttepe Thermal
The massive, double-peaked Hasan Dagi stratovolcano in central Turkey has a complex history that includes three episodes of caldera collapse. Numerous cinder cones, maars, and lava flows dot the flanks of the volcano. The hilly terrain in the foreground is a debris-avalanche deposit produced by collapse of the volcano.

Photo by Richard Waitt, 1994 (U.S. Geological Survey).

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.

Aydar E, Gourgaud A, 1998. The geology of Mount Hasan stratovolcano, central Anatolia, Turkey. J Volc Geotherm Res, 85: 129-152.

Brinkmann R, 1976. Geology of Turkey. Amsterdam: Elsevier, 158 p.

Deniel C, Aydar E, Gourgaud A, 1998. The Hasan Dagi stratovolcano (Central Anatolia, Turkey): evolution from calc-alkaline to alkaline magmatism in a collision zone. J Volc Geotherm Res, 87: 275-302.

Develle A-L, Williamson D, Gasse F, WAtler-Simonnet W, 2009. Early Holocene volcanic ash fallout in the Yammouneh lacustric basin (Lebanon): tephrochronological implications for the Near East. J Volc Geotherm Res, 186: 416-425.

Feraud J, Ozkocak O, 1993. Les volcans actifs de Turquie: guide geologique et itineraires de'excursions. L'Assoc Volc Europeenne (LAVE), 2: 1-82.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Kuzucuoglu C, Pastre J-F, Black S, Ercan T, Fontugne M, Guillou H, Hatte C, Karabiyikoglu M, Orth P, Turkecan A, 1998. Identification and dating of tephra layers from Quaternary sedimentary sequences of Inner Anatolia, Turkey. J Volc Geotherm Res, 85: 153-172.

Meece S, 2006. A bird's eye view - of a leopard's spots, The Catalhoyuk 'map' and the development of cartographic representation in prehistory. Anatolian Studies, 56: 1-16.

Mellaart J, 1967. Catal Huyuk a Neolithic Town in Anatolia. New York: McGraw Hill, 232 p.

Mellaart J, 1993. Descriptions (picturales) d'eruptions recentes du Hasan Dagi par les hommes du neolithique a Catal Hoyuk. L'Assoc Volc Europeenne (LAVE), 42: 17-30.

Umran Dogan A, Dogan M, Kilinc A, Locke D, 2008. An isobaric-isenthalpic magma mixing model for the Hasan Dagi volcano, Central Anatolia, Turkey. Bull Volc, 70: 797-804.

Volcano Types

Stratovolcano
Caldera(s)
Lava dome(s)

Tectonic Setting

Intraplate
Continental crust (> 25 km)

Rock Types

Major
Dacite
Andesite / Basaltic Andesite
Rhyolite
Basalt / Picro-Basalt
Trachyandesite / Basaltic trachy-andesite

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
235
4,979
174,584
1,362,673

Affiliated Databases

Large Eruptions of Hasan Dagi Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
Smithsonian Collections Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.