1 / 21

Piton de la Fournaise ( Peak of the Furnace )

Piton de la Fournaise ( Peak of the Furnace ). By Joseph Barnes and Papa Moda Loum . Dept. of Geology, Colby College. Geographic and tectonic setting. Sits on a mantle plume (hot spot) Western Indian Ocean Latitude: 21.231°S 21°13'51"S Longitude: 55.713°E 55°42'45"E.

alea-pacheco
Download Presentation

Piton de la Fournaise ( Peak of the Furnace )

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Piton de la Fournaise (Peak of the Furnace) By Joseph Barnes and Papa ModaLoum. Dept. of Geology, Colby College

  2. Geographic and tectonic setting • Sits on a mantle plume (hot spot) • Western IndianOcean • Latitude:21.231°S 21°13'51"S Longitude:55.713°E 55°42'45"E

  3. Dimensions • 530,000 yearoldshieldvolcano • Base: 135 miles (220 km) in diameter • 21,600 feettall (6600 meters) • The base of the volcanois 24 times largerthan the one in Mount St.Helens

  4. Calderas, lava shield, craters & vents

  5. Eruptive history • One of the most active volcanoes in the world (lava eruptions) • Recordederuptions: • First : 1640 • Last: 2010

  6. Eruptive style • Hawaiian style : pahoehoe and aaflows. Pahoehoe AA

  7. Volcanicdeposits • Depositsfrom lava flows: • Pahoehoe and AA • Pyroclasticflows Piton de la Fournaise 2010 eruption

  8. Positivecontributions • Power source • Tourism In the 1977 eruption, the local people cried miracle because the lava spared the church. Sincethen, the entrance has been cleared and the churchrepainted and renamed "Notre Dame des Laves" (litterally: "Our Lady of the Lavas").

  9. Volcanichazards • Small population , verylittle danger and damage • 1977 : village of Piton-Sainte-Rose wasinundated by lava flows.

  10. On 6 July 2001, police and security personnel watch as molten lava from Piton de la Fournaise blocks the main national RN 2 road, which connects Réunion island from E to S.

  11. Observederuption • April 2007 : • 3,000,000 cubicmeters of lava • caldera collapse • One of the largesteruptions of lava in the past 100 years

  12. Caldera’s collapse consequences • The 6 April collapse affected the Dolomieu's Northern part. • SO₂ release • Decreasedgas content of unerupted magma

  13. Hydrothermal activity • No major hydrothermal activity • Potential hydrothermal system from the summit area to the magma reservoir

  14. Petrology and volcanicdeposits Basalt rock Olivine based, plagioclase-phyricbasedbasalt

  15. Lava flows and pyroclasticblankets

  16. Monitoring of the volcano Tiltmeters Differential GPS receivers Extensometers

  17. Monitoring (continued) Figure A: Daily earthquakes at Piton de la Fournaise during 1 March to 1 July 2006. Courtesy of OVPF. Seismicitywaslowfrommid-Januarythrough March. From March untilmid-July, seismicitygraduallyincreased.

  18. Tourism • 1990 – 2005 : the golden era • 2001: • 424,000 tourists • 271.5 million € revenue B. 2005 – 2006: the crisis • 27 and 60% drops in 2005 and 2006, respectively

  19. Geothermalenergy

  20. Bibliography • Works cited http://volcano.oregonstate.edu/book/export/html/139http://www.volcanolive.com/piton.htmlhttp://www.alaingerente.com/ehistoire.htmlhttp://www.volcano.si.edu/world/volcano.cfm?vnum=0303-02=&volpage=weeklyhttp://en.wikipedia.org/wiki/Piton_de_la_Fournaisehttp://onlinelibrary.wiley.com/doi/10.1029/2010GL046183/fullhttp://en.wikipedia.org/wiki/Tourism_in_R%C3%A9unionhttp://publishing.cdlib.org/ucpressebooks/view?docId=ft6v19p151&chunk.id=d0e13525&toc.id=d0e12419&brand=ucpress

  21. https://www.google.com/search?q=piton+de+la+fournaise+caldera&hl=en&client=firefox-a&hs=sft&tbo=u&rls=org.mozilla:en-US:official&channel=fflb&biw=1440&bih=679&tbm=isch&source=univ&sa=X&ei=_9gBUevjC5Lh0AHCxYGgDw&ved=0CC0QsAQhttps://www.google.com/search?q=piton+de+la+fournaise+craters&hl=en&client=firefox-a&hs=pKE&tbo=u&rls=org.mozilla:en-US:official&channel=fflb&biw=1440&bih=679&tbm=isch&source=univ&sa=X&ei=5NgBUaCaO8a60AH6w4DICA&ved=0CD4QsAQhttp://volcano.oregonstate.edu/oldroot/volcanoes/piton/index.html http://www.gsi.ie/Education/Geology+for+Everyone/Volcanoes.html • http://www.picstropical.com/reunion/index_files/index_reunion_map.gif • http://farm5.staticflickr.com/4082/4770746257_158e07d3a5.jpg • http://www.alaingerente.com/ehistoire.html • http://www.sainte-rose-reunion.org/images/stories/coulee1977.jpg • http://geology.com/rocks/pictures/basalt-380.jpg • http://jfmoyen.free.fr/IMG/jpg/bplagio.jpghttp://tanoutout.com/sites/default/files/images/8.gif

More Related