What is an interesting fact about Erta Ale?
Erta Ale was discovered in 1906, making it the longest-known lava lake. For a lava lake to exist, the surface of the lake and the magma chamber below must form a constant convecting system, or the entire thing will cool and solidify. Beneath the ground surrounding Erta Ale is an enormous pool of active magma.
What is amazing about the Erta Ale volcano?
It is famed for its persistent lava lake which has been active during most of the past decades since it was first discovered in the 1960s. Erta Ale is only 613 m high, but as typical for a shield volcano has a very gentle slopes and a large 40 km diameter base.
Is Erta Ale an explosive volcano?
Hazards: Lava flows – the volcano has a long-lived active lava lake, possibly as long as the last 100 years (Oppenheimer and Francis, 1998). There is also evidence of more explosive eruptions (VEI 2) in the last 150 years from Erta Ale, but its remote location makes accurate records sparse.
What type of volcano is Erta Ale?
basaltic shield volcano
“Erta’Ale is a basaltic shield volcano, 500 m high, with a base 50 km across.
When was the last eruption of Erta Ale?
2009Erta Ale / Last eruption
Why is Erta Ale unique?
Erta Ale: a Unique Place to Visit It was first discovered in the 1960s and since then, its popularity has grown mostly due to the ongoing activity and numerous eruptions. Its persistent lava lake has been active throughout most of the past decades, a feature that is shared with just a few other volcanoes in the world.
How did Erta Ale get its name?
Erta Ale means “smoking mountain” in the local Afar language and its southernmost pit is known locally as “the gateway to Hell”. In 2009, it was mapped by a team from the BBC using three-dimensional laser techniques, in order for the mapping team to maintain a distance and avoid the lakes’ searingly hot temperatures.
When did Erta Ale first erupt?
Erta Ale has undergone seven eruption events in the past 125 years. Three of the early eruption dates, 1873, 1903, and 1904 are uncertain. However, 1906, 1940, 1960, and 1967 are well established events. Erta Ale has been erupting continuously since 1967.
How was Erta Ale volcano formed?
Erta Ale is centered over the East African Rift system, which is a triple junction setting whose movements are resulting in the formation of a pull-apart basin or rift. The volcano comprises mainly mafic material which has been brought up to the surface caused by unroofing of the mantle due to this rift formation.
Where is Erta Ale volcano?
NE Ethiopia
Erta Ale volcano, located in the similarly named range in the hostile Danakil depression in NE Ethiopia, is a basaltic shield volcano known for persistent lava lake activity since early in the 20th century. Whilst only 613m high, the volcano has a base with a diammeter of nearly 30km.
What type of volcano is Mount Popocatepetl?
Popocatepetl, the second highest volcano in Mexico, is a giant stratovolcano, 70 km (~45 miles) southeast of downtown Mexico City, and 45 km (~30 miles) southwest of the city of Puebla. Popo – as many people call it rather than struggling with its full name (Popo-cat-e-petal) – became active just before Christmas after five decades of quiet.
What type of eruption is a composite volcano?
Cinder cones. C inder cones are the simplest type of volcano.
What type of volcano is most eruptive?
Hawaiian Eruption. In a Hawaiian eruption,fluid basaltic lava is thrown into the air in jets from a vent or line of vents (a fissure) at the summit or on
What type of lava is in a composite volcano?
What type of lava is in a composite volcano? Composite volcano magma is felsic, which means it contains silicate-rich minerals rhyolite, andesite, and dacite. Low-viscosity lava from a shield volcano, such as might be found in Hawaii, flows from fissures and spreads. Popular.
https://www.youtube.com/watch?v=tYr43j1kIXU