Grímsnes () is a
fissure
A fissure is a long, narrow crack opening along the surface of Earth. The term is derived from the Latin word , which means 'cleft' or 'crack'. Fissures emerge in Earth's crust, on ice sheets and glaciers, and on volcanoes.
Ground fissure
...
or crater row
volcanic system located in South
Iceland
Iceland ( is, Ísland; ) is a Nordic island country in the North Atlantic Ocean and in the Arctic Ocean. Iceland is the most sparsely populated country in Europe. Iceland's capital and largest city is Reykjavík, which (along with its s ...
, a relatively small volcanic system located SE of Thingvallavatn lake east of an en echelon group of volcanic fields extending across the Reykjanes Peninsula. The
elevation
The elevation of a geographic location is its height above or below a fixed reference point, most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic datum § Ver ...
at its apex is 214 meters.
Tephrochronology
250px, Tephra horizons in south-central Iceland. The thick and light coloured layer at the height of the volcanologist's hands is rhyolitic tephra from Hekla.
Tephrochronology is a Geochronology, geochronological technique that uses discrete l ...
approximates the volcano's last eruption as 3500 BC.
The individual volcanoes in the area include
Kerið, a lake-filled
volcanic crater
A volcanic crater is an approximately circular depression in the ground caused by volcanic activity. It is typically a bowl-shaped feature containing one or more vents. During volcanic eruptions, molten magma and volcanic gases rise from an und ...
.
The Grímsneshraun
lava-fields in the area cover a total of . The largest of these plains is the Seyðishólar-Kerhólahraun field which covers . Other sizeable plains include the Tjarnarhólahraun field at , the Kálfshólahraun field at and the Álftarhólshraun . The total volume of lava produced in the lava flows of Grímsnes has been estimated at
See also
*
Geography of Iceland
Iceland ( ) is an island country at the confluence of the North Atlantic and Arctic oceans, east of Greenland and immediately south of the Arctic Circle, atop the constructive boundary of the northern Mid-Atlantic Ridge about from Scotland and ...
*
List of lakes of Iceland
This is a list of lakes of Iceland (partially indicating surface, depth and volume).
Iceland has over 20 lakes larger than 10 km² (4 sq mi), and at least 40 others varying between 2.5 and 10 km² (1 to 4 sq mi) in size. This list also in ...
*
List of volcanoes in Iceland
This list of volcanoes in Iceland includes active and dormant volcanic mountains, of which 18 have erupted since human settlement of Iceland began around 900 AD.
__TOC__
List
Volcanic zones and systems
Iceland has four major volcanic ...
*
Volcanism of Iceland :''The volcano system in Iceland that started activity on August 17, 2014, and ended on February 27, 2015, is Bárðarbunga.''
:''The volcano in Iceland that erupted in May 2011 is Grímsvötn.''
Iceland experiences frequent volcanic activity, ...
External links
Grímsnesin the
Catalogue of Icelandic Volcanoes
Catalog or catalogue may refer to:
*Cataloging
**'emmy on the 'og
**in science and technology
*** Library catalog, a catalog of books and other media
****Union catalog, a combined library catalog describing the collections of a number of librarie ...
Volcano Live*
Volcanoes of Iceland
Fissure vents
Dormant volcanoes
South Iceland Seismic Zone
Volcanic systems of Iceland
VEI-3 volcanoes
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