Geitlandsjokull
| Geitlandsjokull | ||
|---|---|---|
 Valley glacier of Geitlandsjökull left. behind the rhyolite mountain Prestahnjúkur , to the right of it Þórisjökull |
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| height | 1400 m | |
| location | Iceland | |
| Mountains | Langjokull | |
| Coordinates | 64 ° 36 ′ 0 ″ N , 20 ° 36 ′ 0 ″ W | |
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| Type | Subglacial volcano | |
| Normal way | over the Langjökull | |
| particularities | glaciated tabular volcano | |
The Geitlandsjökull is a side glacier of the great glacier shield Langjökull in the west of Iceland , is one and the same time a glaciated volcano on the southern Langjökull volcano system.
It reaches an altitude of 1400 m . Its volume is given by Eason et al. (2015) estimated at 5.2 km³.
location
The small glacier shield tops a table volcano and is located in the south-western corner of Langjökull. To the west of it and the upstream central volcano Prestahnúkur lies the highland slope Kaldidalur . The glacier is located in the municipal area of Borgarbyggð and Grímsnes og Grafningur .
Name and reference
Historically, the name refers to two glaciers that were named after a Geitland farm located there in the late Middle Ages . Sources from the 14th century indicate this.
One of the two glaciers that grew together at that time is now separated from Langjökull and bears the name Þórisjökull . From the latter the Geitlandsjökull separates the valley Þórisdalur .
The two glaciers are still sometimes referred to by locals as Geitlandsjökull (nyrđri) and Geitlandsjökull (syđri) .
Volcanism
Geitlandsjökull glacier volcano belongs to the western zone of active volcanism in Iceland along with the larger glacier shield Langjökull on which it hangs. It belongs to the western Langjökull volcano system, which is assigned to the central volcano Prestahnúkur . This borders Geitlandsjökull in the west. Fissures in the volcanic system reach below its ice cap.
See also
Web links
- Information on Icelandic glaciers, US reg., On the present glacier, p. 5 (PDF file; 1.8 MB) (English)
- Map and information (Icelandic)
Scientific Article
- Geitlandsjökull in the Global Volcanism Program of the Smithsonian Institution (English) To the central volcano Prestahnúkur
- Helgi Björnsson, ea: Geometry, mass balance and climate change response of Langjökull ice cap, Iceland. (Geolog. Inst., Univ. Iceland on climatic influences on Langjökull) (PDF file) (English)
- DW McGarvie, ea: Volcano – ice interactions at Prestahnúkur, Iceland: rhyolite eruption during the last interglacial – glacial transition. Annals of Glaciology 45 2007, p.1 (On the Prestahnúkur volcanic system and its (presumed) relation to Geitlandsjökull) (PDF file) (English)
- Sigurlaug Hjaltadóttir, ea: Kortlagning sprungna í nágrenni Prestahnúks, með smáskjálftum. Kortlagning jarðhita í gosbeltum Íslands - annar . Skyrslur Veðurstofu, VI.2009 [PDF file] (Icelandic).
Individual evidence
- ↑ Sigurlaug Hjaltadóttir, ea: Kortlagning sprungna í nágrenni Prestahnúks, með smáskjálftum. Kortlagning jarðhita í gosbeltum Íslands - annar . Skyrslur Veðurstofu, VI.2009 Accessed: 23 August 2020
- ^ Eason et al .: Effects of deglaciation on the petrology and eruptive history of the Western Volcanic Zone, Iceland. Bulletin of Volcanology, June 2015, p. 6
- ↑ Freysteinn Sigurðsson: Borgarfjarðarhérað milli Mýra og Hafnarfjalla. Ferdafélag Ísland, árbók 2004. Reykjavík 2004, p. 14
- ↑ Evidence in 2009 from investigations by the Isl. Meteorological Office on earthquake series Sigurlaug Hjaltadóttir, ea: Kortlagning sprungna í nágrenni Prestahnúks, með smáskjálftum. Kortlagning jarðhita í gosbeltum Íslands - annar . Skyrslur Veðurstofu, VI.2009 ; Accessed: August 23, 2010 [PDF file] (Icelandic)