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| Mount Berlin | |
|---|---|
.jpg) View of Mount Berlin from the surrounding ice sheet | |
| Highest point | |
| Coordinates | 76°03′18″S 135°49′30″W / 76.055°S 135.825°W[1] |
| Geography | |
  Mount Berlin Marie Byrd Land, Antarctica | |
| Geology | |
| Last eruption | 8,350±5,300 BCE |
Mount Berlin is a glacier-covered volcano in Marie Byrd Land, Antarctica, 100 kilometres (62 mi) from the Amundsen Sea. It is a roughly 20-kilometre-wide (12 mi) mountain with parasitic vents that consists of two coalesced volcanoes: Berlin proper with the 2-kilometre-wide (1.2 mi) Berlin Crater and Merrem Peak with a 2.5-by-1-kilometre-wide (1.55 mi × 0.62 mi) crater, 3.5 kilometres (2.2 mi) away from Berlin. The summit of the volcano is 3,478 metres (11,411 ft) above sea level. It has a volume of 200 cubic kilometres (48 cu mi) and rises from the West Antarctic Ice Sheet. It is part of the Marie Byrd Land Volcanic Province. Trachyte is the dominant volcanic rock and occurs in the form of lava flows and pyroclastic rocks.
The volcano began erupting during the Pliocene and was active into the late Pleistocene and the Holocene. Several tephra[a] layers encountered in ice cores all over Antarctica – but in particular at Mount Moulton – have been linked to Mount Berlin, which is the most important source of such tephras in the region. The tephra layers were formed by explosive eruptions that generated high eruption columns. Presently, fumarolic activity occurs at Mount Berlin and forms ice towers from freezing steam.
- ^ LeMasurier et al. 1990, p. 151.
- ^ Hargitai & Kereszturi 2015, Tephra.
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