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Mount Erebus. Beth Fleming and Christine Francis. Ross Island, Antarctica World's southernmost active volcano!. Discovered: 1841 Latitude: 77°32'0"S Longitude: 167°10'0"E. http://eye-maps.com/wp-content/uploads/2011/11/erebus-map.gif. Form and Dimensions. Mt. Erebus. - PowerPoint PPT Presentation
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Kamresse Bounds & Ben Howard Dept. of Geology, Colby College
Mount Erebus
www.gopixpic.com
Basic Information:
Discovered in 1841 by James Ross
Ross Island, Antarctica
Located on Antarctic plate
Elevation of 3794 meters
Stratovolcano
4 active vents
Lava lake
Inner crater, main crater floor, side crater and a “phreatic” crater
http://uofa.ualberta.ca/science/science-news/2014/october/fire-and-ice-part-i
http://ngm.nationalgeographic.com/2012/07/mount-erebus/peter-photography
http://ngm.nationalgeographic.com/2012/07/mount-erebus/judson-text
Eruptive History:
Has erupted roughly 13 times since 1900
Currently erupting
Current eruption began in 1972
Frequent strombolian eruptions with rare lava flows and infrequent ash eruptions
http://de.wikipedia.org/wiki/Mount_Erebus
Observed Eruptions and Hazards:
Eruptions cause lava bombs
Bombs up to 10 feet wide
50 bombs ejected a day
No real hazards posed to humans due to lack of population
Eruptive styles tend to be timid
Air New Zealand Flight 901 crashed into Mount Erebus in 1979, 257 killed
http://commons.wikimedia.org/wiki/File:Phonolite_Volcanic_Bombs_from_Mt_Erebus.jpg
Rocks and Deposits:
The petrology consists mostly of phonolite, basanite and phono-tephrite deposits
Minor deposits include trachyte and trachyandesite
Chemistry of lava flows consists largely of Si02 (64%)
Al2O3 (15%), FeO (6%), Na2O (7%), K2O (5%)
http://www.crpg.cnrs-nancy.fr/Science/Collection/Volcaniques.html
http://en.wikipedia.org/wiki/Basanite https://www.studyblue.com/notes/note/n/igneous-rocks/deck/9290123
http://www.quazoo.com/q/Trachyandesite
Volcanic Form:
Cinder cone on top of shield volcano
Cinder cone at summit created over the past 1000 years
Although there are rare lava flows inside of crater, much activity comes from lava lake
http://voices.nationalgeographic.com/author/kensims/
Active Monitoring: Mount Erebus Volcano Observatory provides seismic activity reports
Frequent images are posted by Mount Erebus Volcano Observatory
Other information such as wind speed, tilt and temperature are reported
http://imgarcade.com/1/mount-erebus-eruption-2011/
Ice Caves:
Ice tongue created from steam off of Erebus
33 feet high
Ice caves extend off from tongue
Stalactite icicles
Attraction for research station occupants
http://ngm.nationalgeographic.com/2012/07/mount-erebus/peter-photography
Firsthand Footage
https://www.youtube.com/watch?v=c6qOT0Xirvg
Works Cited:
"Erebus." Smithsonian Institution Global Volcanism Program. Smithsonian Institution, 2103. Web. 24 Jan. 2015. <http://volcano.si.edu/ volcano.cfm?vn=390020>.
"Erebus Ice Tongue." Wikipedia. N.p., 1 Dec. 2014. Web. 25 Jan. 2015. <http://en.wikipedia.org/wiki/Erebus_Ice_Tongue>.
Helmuth, Laura. "Antarctica Erupts!" Smithsonian Dec. 2006: n. pag. MAS Ultra - School Edition. Web. 24 Jan. 2015. <http://lw5cz6wa6g.search.serialssolutions.com/ ?ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info:sid/ summon.serialssolutions.com&rft_val_fmt=info:ofi/ fmt:kev:mtx:journal&rft.genre=article&rft.atitle=ANTARCTICA+ERUPTS&rft.jtitle=Smi thsonian&rft.au=Laura+Helmuth&rft.date=2006-12-01&rft.pub=Smithsonian+Magazine&rf t.issn=0037-7333&rft.eissn=1930-5508&rft.volume=37&rft.issue=9&rft.spage=58&rft.e xternalDocID=1174853701¶mdict=en-US>.
Judson, Olivia. "Life in an Icy Inferno." National Geographic. N.p., July 2012. Web. 24 Jan. 2015. <http://ngm.nationalgeographic.com/2012/07/ mount-erebus/judson-text>.
"Mount Erebus." Wikipedia. N.p., 23 Jan. 2015. Web. 25 Jan. 2015. <http://en.wikipedia.org/wiki/Mount_Erebus>.
Mount Erebus Volcano Observatory. N.p., n.d. Web. 24 Jan. 2015. <http://erebus.nmt.edu/index.php>.
NASA Earth Observatory. N.p., n.d. Web. 24 Jan. 2015. <http://earthobservatory.nasa.gov/NaturalHazards/view.php?id=37043>.