![]() ![]() Simply said, Mount Erebus provides an ideal proxy for the study of volcanoes relatively simple mechanisms drive rare, accessible and spectaculars geological features. ![]() Tephra stratigraphy is consistent with Ross' observations and further suggests that the volcano's geological history is marked by explosive eruption events and is further reflected in the concentric caldera patterns. Upon the discovery of the Erebus volcano by Ross and his crew in 1847, reports describe an explosive eruption. The lithology points to a three stage building process: the shield building stage where the mantle plume would have been protruding the crust, a cone building stage where evolved lavas would have formed the flanks of the volcano and finally a marked increased lava forming stage forming the bulk of mount Erebus. Seismic velocity surveys suggest a thick layer (~5 km) of solidified phonolitic lava flows overlying cenozoic sediments and a basaltic basement. The surface geology of the volcano is almost entirely phonolitic anorthoclase. Mount Erebus is the second-highest volcano in Antarctica, the highest active volcano in Antarctica, and the southernmost active volcano on Earth. The age of the plume correlates both temporally and spatially with the Terror rift (see side note). Ross island itself is on the extensional rifting margin of the West Antarctic Plate, the north eastern terminus of Terror ridge. To the south, geological similarities suggests that brown peninsula would also have been a the product of the hypothesized Erebus hotspot. They all are though to be the product of crust thinning overlying a strong thermal anomaly and are consistent with a hotspot/mantle plume model. The volcano and its neighbouring mountains, mount Bird to the north and mount Terror to the east, all reside on Ross Island. The snow-covered Mount Erebus is the southernmost active volcano on Earth and shares Antarctica’s Ross Island with three other volcanoes, all dormant. The summit of the dominantly phonolitic volcano has been modified by one or two generations of caldera formation. It is the largest of three major volcanoes forming the crudely triangular Ross Island. Cameras, microphones, seismic equipment as well as scientists from a wide range of fields all monitor mount Erebus. Mount Erebus, the world's southernmost historically active volcano, overlooks the McMurdo research station on Ross Island. It has thus been subject of extensive research. Furthermore, irony has it, it is relatively easy to access. It is notable for its persistent convecting lava lakes with Strombolian eruptions projecting bombs up to 10 m in diameter in the last decades and its size -at 3794 m above sea level and ~200km km^3 in volume, it is among the largest volcanoes of the world . Past research has included gaseous emission concentration, composition and flux as well as thermal image stills, visible and IR video, seismic, and infrasonic studies of the volcano.Mount Erebus is an alkaline stratovolcano just off the shore of the Antarctic main land (77 33'S, 167 10'E). The research, led by scientists from New Zealand and the United States, will yield the clearest picture yet of the volcano’s. The work force at LEH, which is composed of senior research scientists, professors and graduate students, maintains both scientific and logistical equipment on the mountain. An international collaboration of scientists is using electromagnetic emissions from lightning strikes and solar wind to map the inner workings of Antarctica’s Mount Erebus, the world’s southernmost active volcano. LEH is used as a base of operations for the monitoring of Mt Erebus, other scientific studies, and maintenance of such equipment. Major support for all operations at LEH are conducted through McMurdo Station run by a division of NSF, the United States Antarctic Program (USAP). The location facilitates trips to the crater rim where the volcano's persistent lava lake is visible. LEH is located on the northern side of Mount Erebus within its caldera rim. It is notable for its persistent convecting. The permanent LEH was built in November 1992 as a replacement for the Upper hut and other semi-permanent Jamesway huts. Mount Erebus is an alkaline stratovolcano just off the shore of the Antarctic main land (77 33S, 167 10E). From basanite to phonolite: a simple magmatic evolution. The installation comprises two huts, one kitchen and recreation building and one working and storage building. Petrological, geochemical, and isotopic evolution of Erebus volcano from source to lava lake. The hut served as the seasonal base of the Mount Erebus Volcano Observatory (MEVO), run by New Mexico Institute of Mining and Technology (NMT). ![]() The Lower Erebus Hut (LEH) is a permanent field facility located on Mount Erebus on Ross Island, Antarctica. ![]()
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