ARENAL By: Corben Davis, and Sam Gomez GE151j Costa Rican Volcano Alujela Provence, Costa Rica Tectonic formation/location Formation History Formed 7000 Years Ago Erupted along with Chato Volcano until about 3500 years ago Formed 7000 Years Ago Erupted along with Chato Volcano until about 3500 years ago Class: Stratovolcano Characteristics Steep Slope Conical Layered Stratified appearance Dimensions Summit: 1670m (5480ft) Consists of 3 craters Eruption History 7:30 AM July 29, 1968 VEI: 3 Killed: 87 Buried 3 villages Eruption Style Pyroclastic flows Lava flows Volcanic mudflows (lahars) Recent Activity Eruption from Recent activity of gas emissions Eruption from Recent activity of gas emissions The Eruption Hazards Local Population: 5KM: 3,429 30KM: 96, KM: 3,027,485 Explosive Hazards: Potential flows diverted away from locals Rock Deposits, Lava Type Major: Andesite/Basaltic Andesite Basalt/Picro-Basalt Local Tourism Geothermal hot springs Hiking, climbing, mountain biking Volcanic activity observation Geothermal hot springs Hiking, climbing, mountain biking Volcanic activity observation PREDICTING ERUPTIONS: VOLCANO MONITORING Four seismic stations located around Volcano 2 more located within 8km of volcano Bibliography overview.htmoverview.htm vn= vn= noes_work/stratovolc_page.htmlnoes_work/stratovolc_page.html valley/arenal-volcano/valley/arenal-volcano/ overview.htmoverview.htm vn= vn= noes_work/stratovolc_page.htmlnoes_work/stratovolc_page.html valley/arenal-volcano/valley/arenal-volcano/