Acigol-Nevsehir

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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 38.57°N
  • 34.52°E

  • 1689 m
    5540 ft

  • 213004
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

The Global Volcanism Program has no activity reports for Acigol-Nevsehir.

The Global Volcanism Program has no Weekly Reports available for Acigol-Nevsehir.

The Global Volcanism Program has no Bulletin Reports available for Acigol-Nevsehir.

Acigöl-Nevsehir caldera is located in central Turkey and is traversed by the national highway between the towns of Acigöl and Nevsehir. The elliptical 7 x 8 km wide late-Pleistocene caldera is part of a now partially buried larger caldera and contains a group of maars, lava domes, basaltic lava flows, and pyroclastic cones. Three groups of obsidian lava flows have been dated; pre-collapse flows between about 190,000 and 180,000 years before present (BP), 75,000 yrs BP lava domes (such as Taskesik Tepe on the eastern side of the caldera) post-dating formation of the Acigöl-Nevsehir caldera, and young lava domes on the western caldera floor about 20,000 to 15,000 years old. Thirteen scoria layers from local tephras erupted between about 11,000 and 4300 years ago were found in sediment cores in the late Pleistocene Eski Acigöl maar. An ash layer from the Acigöl-Nevsehir volcanic group overlies 2300-1850 BCE artifacts of Roman-Cappadocian age.

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

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
2080 BCE ± 200 years Unknown Confirmed   Anthropology
2370 BCE ± 200 years Unknown Confirmed   Radiocarbon (uncorrected) Tephra layer T17
3500 BCE (?) Unknown Confirmed   Radiocarbon (uncorrected) Tephra layer T15
6230 BCE (?) Unknown Confirmed   Radiocarbon (uncorrected) Tephra layer T13
7810 BCE (?) Unknown Confirmed   Radiocarbon (uncorrected) Tephra layer T10

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.


Synonyms

Acigol-Neysehir

Cones

Feature Name Feature Type Elevation Latitude Longitude
Ayaktas Tepe Cone
Kizil Tepe Cone
Mercimek Tepe Cone
Obruk Tepe Cone

Craters

Feature Name Feature Type Elevation Latitude Longitude
Eski Acigöl Maar

Domes

Feature Name Feature Type Elevation Latitude Longitude
Güneydag Dome
Kaleci Dome
Karniyarik Dome
Kocadag Tepe
    Kocatepe
Dome 1689 m
Korudagi Dome
Kuzay Dome
Taskesik Tepe Dome
Vigla Tepe Dome
A large group of maars, lava domes, basaltic lava flows, and pyroclastic cones occupies the Acigöl-Nevsehir caldera in central Turkey in this NASA Landsat mosaic (with north to the top). The elliptical 7 x 8 km wide late-Pleistocene caldera, whose rim is not apparent in this image, is traversed by the national highway between the towns of Acigöl and Nevsehir (top-right, just right of the mosaic join line).

NASA Landsat7 image (worldwind.arc.nasa.gov)

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.

Bigazzi G, Yegingil Z, Ercan T, Oddone M, Ozdogan M, 1993. Fission track dating obsidians in central and northern Anatolia. Bull Volc, 55: 588-595.

Druitt T H, Brenchley P J, Gokten Y E, Francaviglia V, 1995. Late Quaternary rhyolitic eruptions from Acigol Complex, central Turkey. J Geol Soc London, 152: 655-667.

Froger J-L, Lenat J-F, Chorowicz J, Le Pennec J-L, Bourdier J-L, Kose O, Zimitoglu O, Gundogdu N M, Gourgaud A, 1998. Hidden calderas evidenced by multisource geophysical data; an example of Cappadocian calderas, central Anatolia. J Volc Geotherm Res, 85: 99-128.

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.

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.

Pasquare G, 1968. Geology of the Cenozoic volcanic area of Central Anatolia. Roma Accad Nazionale Lincei Mem, 9: 55-204.

Volcano Types

Caldera
Maar(s)
Lava dome(s)
Pyroclastic cone(s)

Tectonic Setting

Intraplate
Continental crust (> 25 km)

Rock Types

Major
Rhyolite
Dacite
Basalt / Picro-Basalt
Andesite / Basaltic Andesite

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km
127,863
127,863
218,469
2,253,483

Affiliated Databases

Large Eruptions of Acigol-Nevsehir 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.