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Reventador Nick Manning and Sonja Sepkowitz Department of Geology, Colby College. Basic Information. Ecuador lies next to a subduction zone. Reventador is located in Ecuador along the Cordillera Real within the Andes mountains. . . - PowerPoint PPT Presentation
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Megan Lasher and Natalie ThompsonDept. of Geology, Colby College
El Reventador
Location: Northern Ecuador
Photos courtesy of Google Maps ©
Plate tectonics of the Andes
http://people.rit.edu/rhrsbi/GalapagosPages/Vulcanism2.html
Reventador is located in the northern Andes, which are along the South American tectonic plate, next to the Nazca Plate.
The BasicsType: StratovolcanoElevation: 11,683 ft
Features: - 4 km.- wide caldera on the eastern side
- A dome named “El Copote”- Flank vents
- A steam and gas plume in the central cone
Eruptive history
- 22 times in recorded history, starting in 1541
- Most active in the 20th and 21st centuries, with 15 eruptions recorded since 1912
http://www.andes.info.ec/es/actualidad/alerta-amarilla-napo-orellana-sucumb%C3%ADos-ante-reactivaci%C3%B3n-volc%C3%A1n-reventador.html
Eruptive history continued
1. Basal Volcanic Complex2. Intermediate volcano growth3. Present-day Volcano Reventador
Eruption descriptions
The most recent eruptions have been characterized by: 2002:
Pyroclastic flows and major ash clouds accompanied lava flows from the summit and flank vents
2007: Lahars observed in June after ash emissions in May
2008:Categorized as a Strombolian explosion
with two lava flows.
Hazards - 2.6 million people within 100km
- The 2002 eruption caused a layer
of ash 3-5 mm thick
- The last eruption forced the Trans-Ecuadorian Oil Pipeline to shut down
Rocks
Andesite/Basaltic AndesiteBasalt/Picro-BasaltDacite
Pyroclastic flows: black basaltic andesite, olivine, augite, hypersthene, hornblende
http://poleshift.ning.com/profiles/blog/show?id=3863141%3ABlogPost%3A707141&page=26
Tremors, earthquakes, explosions, steam emissions, incandescent lava flows
Tourism- Located in the Cayambe Coca Ecological Reserve
Cameras and seismometers around El Reventador monitor the frequent seismic activity
Current Activity
Bibliography - Smithsonian Institution: Global Volcanism Program, 2013, at
http://www.volcano.si.edu/volcano.cfm?vn=352010, (accessed 22 January, 2015) - Volcano Discovery, 2014, at
http://www.volcanodiscovery.com/ecuador/reventador.html (accessed 22 January, 2015)
- Oregon State University: Volcano World, 2015, at http://volcano.oregonstate.edu/reventador (accessed 22 January, 2015)
- Vulkaner, 2014, at http://www.vulkaner.no/v/volcan/latinam/reventador_e.html (accessed 22 January, 2015)
- Ecuador Travel Guide: The Best of Ecuador, 2001, at http://www.thebestofecuador.com/revtrek.htm (accessed 22 January, 2015)
- Summit Post, 2006, at http://www.summitpost.org/el-reventador/154247 (accessed 22 January, 2015)