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300:, and the prior mountain building eruptions must have been before 55,000 years ago. There are eight tuyas in the volcanic system. The largest, the asymmetric Thórólfsfell tuya with its area of about 8 km (3.1 sq mi) and prominence of about 450 m (1,480 ft) is the type tuya for tuya's where there is no evidence for the presence of a large and long-lived meltwater lake under the ice cover, as meltwater was able to drain away between its formative eruptions. In the 1980's it was postulated that the Þórsmörk ignimbrite originated from the volcano but it originated from
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346:. The only current outlet glacier with a moraine is unnamed down the Eystri Botná valley but between 1994 and 2006 had surge glacier characteristics before regressing again. Part of the glacier to the north has now separated into three with one glacier being called Blesárjökull. A small glacier on the eastern slopes of Ýma called Ýmujökull has disappeared.
280:. The western flank has a prominence near Austurdalur and the eastern flank that of Vestriöxl at 1,002 m (3,287 ft). About 2 km (1.2 mi) to the north of Ýma is the peak of Sindri at 1,272 m (4,173 ft). Ásgrindur at 1,299 m (4,262 ft) is a similar distance north of Ýmir.
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of Norse mythology. The peak Ýma is about 500 m (1,600 ft) to its east. The Thórólfsfell (Þórólfsfel) tuya at 595 m (1,952 ft) is on the southern flanks of
Tindfjallajökull, about 8 km (5.0 mi) south of the glacier. Its eastern slopes abut the Þórsmörk
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to the north. Sultarfell is a pale coloured rhyolitic hill in the fissure swarm north-east of
Tindfjallajökull. There is a hot spring in Hitagil to the south-east so some geothermal activity remains.
257:, "peak mountains") is a ridge that extends to the south of the glacier and is an alternative name for the volcano. The name of the glacier in Icelandic means "Tindfjöll glacier".
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The central volcano is 15 to 20 km (9.3 to 12.4 mi) in diameter with a 5 by 7 km (3.1 by 4.3 mi) wide caldera and has erupted rocks of
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seismically active areas. Clicking on the image enlarges to full window and enables mouse-over with more detail.
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in area, but which by 2019 had had a 45% decrease in area. In 1945 to 1946 it was mapped to an area of
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Geological features near the
Tindfjallajökull volcanic system (red outline). Other shading shows:
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It is capped by a glacier that has been mapped to a maximum in the 1890's of about
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composition. The most recent eruption is suspected to have been in the
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at 1,462 m (4,797 ft), which takes its name from the giant
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subglacial terrain above 1,100 m (3,600 ft), and
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to the north. Hvítmaga, Gilsá and Þórólfsá drain into
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427:List of volcanic eruptions in Iceland
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108:300 km (120 sq mi)
664:Catalogue of Icelandic Volcanoes
398:while Valá and Blesá drain into
228:[ˈtʰɪntˌfjatlaˌjœːkʏtl̥]
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716:Subglacial volcanoes of Iceland
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706:East Volcanic Zone of Iceland
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726:Central volcanoes of Iceland
432:List of volcanoes in Iceland
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56:1,200 m (3,900 ft)
46:1,462 m (4,797 ft)
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731:Pleistocene stratovolcanoes
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696:Stratovolcanoes of Iceland
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701:Southern Region (Iceland)
265:Its highest peak is Ýmir
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224:Icelandic pronunciation:
254:[ˈtʰɪntˌfjœtl̥]
385:to the north-west and
189:central volcanoes and
736:Pleistocene calderas
422:Volcanism of Iceland
721:Calderas of Iceland
711:Glaciers of Iceland
417:Glaciers of Iceland
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36:Highest point
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84:63.8°N 19.58°W
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89:63.8; -19.58
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62:Coordinates
690:Categories
440:References
334:, in 2000
278:ignimbrite
182:calderas,
100:Dimensions
52:Prominence
340:and 2019
294:rhyolitic
261:Geography
249:Tindfjöll
164:Possibly
113:Geography
42:Elevation
411:See also
369:Þórólfsá
351:Hvítmaga
298:Holocene
290:basaltic
166:Holocene
118:Location
662:in the
308:Glacier
284:Volcano
142:Geology
122:Iceland
75:19°35′W
72:63°48′N
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387:Blesá
360:Gilsá
741:Ymir
378:Valá
273:Ýmir
105:Area
292:to
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