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Helgafell (Hafnarfjörður)
Helgafell () is a mountain on Reykjanes peninsula, Iceland. The height of the mountain is 338 m. Name Many mountains in Iceland bear the name of ''Helgafell''. It means “''holy mountain''” and is thought that in the Viking era, these mountains played a special – if unknown – role in the worship of their gods.Ari Trausti Guðmundsson, Pétur Þorsteinsson: Íslensk fjöll. Gönguleiðir á 152 tind. Reykjavík 2004, p. 98 An architect from Reykjavík measured out the positions of the very old cairn on top of Helgafell as well as the cairns of two other mountains in the vicinity and came to the conclusion that by using the positions of the sun as well as the shades of the cairns, the Vikings had constructed a calendar. Subglacial volcano The mountain is a hyaloclastite ridge formed during the Weichselian glaciation of the Pleistocene epoch. Its typical form shows well as there is not much vegetation on its slopes. Helgafell is located in a tectonically and volcani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subglacial Mound
A subglacial mound (SUGM) is a type of subglacial volcano. This type of volcano forms when lava erupts beneath a thick glacier or ice sheet. The magma forming these volcanoes was not hot enough to melt a vertical pipe right through the overlying glacial ice, instead forming hyaloclastite and pillow lava deep beneath the glacial ice field. Once the glaciers had retreated, the subglacial volcano would be revealed, with a unique shape as a result of their confinement within glacial ice. They are somewhat rare worldwide, being confined to regions which were formerly covered by continental ice sheets and also had active volcanism during the same period. They are found throughout Iceland, Antarctica and the Canadian province of British Columbia. Subglacial mounds can be mistaken for cinder cones because they may have a similar shape. An example of this confusion is Pyramid Mountain in the Wells Gray-Clearwater volcanic field The Wells Gray-Clearwater volcanic field, also called the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
