![erebus mountain lake george erebus mountain lake george](https://cdn-assets.alltrails.com/uploads/photo/image/21102906/extra_large_fa68a7acfaf8683823642576fb86295b.jpg)
The formation of Deacon Peak was dated to about 1679 CE using lichenometry, which is based on the calibration of lichen growth rates. The upper slopes of the cone are composed of reddish oxidized pyroclastic rocks. Deacon Peak scoria cone on Penguin Island contains a summit crater approximately 350 m wide and 75 m deep. The 1969 eruption took place from a roughly N-S-trending line of vents that cut a glacier west of Mount Pond.Ĭopyrighted photo by Katia and Maurice Krafft, 1984. The 1969 eruption from vents along the east side of the caldera bay damaged or destroyed the Chilean and British scientific bases, as well as the island's whaling station. These twisted girders are remnants of the Chilean Antarctic reseach station on the NE side of Deception Island. Photo by Bill Rose, 1983 (Michigan Technological University). Numerous scoria cones and lava domes have formed across the flanks. The Erebus summit crater that contains an active lava lake is in the foreground, with glaciated Mount Terror in the distance. Two of the three volcanoes forming Ross Island are seen in this aerial view from the west. Photo by Oscar González-Ferrán (University of Chile). This volcano is the youngest of three N-S-trending volcanoes in the Ames Range of western Marie Byrd Land, Antarctica. A geologist examines lava flows west of the 4.5-km-wide summit caldera of Mount Andrus. Photo by British Antarctic Survey, 1967 (published in González-Ferrán, 1995). Ashfall occurred throughout the South Shetland Islands.
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During the peak of activity the plume rose over 10 km above the vent, and pyroclastic material covered most of Deception Island. A second eruption center opened on land to the east. The eruption occurred from submarine vents in Telefon Bay, in the northwest part of the caldera bay, forming a new island named Yelcho. A plume of ash and steam rises above Telefon Bay on 4 December 1967. The smaller West Crater is to the upper right. A smaller inactive crater (center), referred to as Side Crater, is located immediately SW of Main Crater. Two summit craters at Erebus are seen in this view, with the 500 x 600 m Main Crater (left) containing an active lava lake (lower left) within the Inner Crater. Fang Ridge is the dark area on the NE flank (left).
![erebus mountain lake george erebus mountain lake george](https://s.hdnux.com/photos/21/66/03/4677835/3/1200x0.jpg)
A largely infilled caldera forms a plateau at the summit where the active cone is located. Mount Erebus is seen here from the west and is Earth's southernmost active volcano. The cinder cone behind Petrel maar to the SW is Deacon Peak, which marks the 180-m-high summit of the island.Ĭopyrighted photo by Katia and Maurice Krafft, 1984. The maar was formed during an explosive eruption in the early 20th century and is surrounded by angular blocks of ejecta. Petrel maar is a 300-m-wide crater on the eastern side of the roughly 1.5-km-wide Penguin Island. There are 36 photos available for volcanoes in Antarctica.