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Silfra fissure The Mid-Atlantic Ridge passing through Þingvellir Rocks and boulders that have piled up in the fissure due to earthquakes.. Silfra (Icelandic pronunciation: [ˈsɪl(v)ra]) is a rift formed in the Mid-Atlantic Ridge – the divergent tectonic boundary between the North American and Eurasian plates – and is located in the Þingvallavatn Lake in the Þingvellir National Park in ...
Global plate motion models have determined that Iceland is rifting at a rate of approximately 1.8–1.9 cm/year (0.71–0.75 in/year). [24] Several processes contribute to the movement and deformation of the Icelandic landmass, such as the spreading plate boundary, active volcanism, seismic activity, and glacial activity.
The geological deformation of Iceland is the way that the rocks of the island of Iceland are changing due to tectonic forces. The geological deformation help to explain the location of earthquakes, volcanoes, fissures, and the shape of the island. Iceland is the largest landmass (102,775 km 2 (39,682 sq mi)) situated on an oceanic ridge.
The volcanic origin of the islands in the lake is clearly visible. The cracks and faults around it, of which the Almannagjá [ˈalˌmanːaˌcauː] ravine is the largest, is where the Eurasian and North American tectonic plates meet. Silfra fissure is a popular scuba and snorkeling site.
Þingvellir is a site of historical, cultural, and geological significance, and is one of the most popular tourist destinations in Iceland. The park lies in a rift valley that marks the crest of the Mid-Atlantic Ridge and the boundary between the North American and Eurasian tectonic plates.
The continental drift between the North American and Eurasian Plates can be clearly seen in the cracks or faults and rifts which traverse the region. The largest, Almannagjá, is a significant canyon. See Þingvellir index Þingvellir National Park rift valley. See Þingvellir index Þingvellir, Snorkeling in the Silfra canyon.
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