Is volcan Lanin a shield volcano?
To the southeast, Quetrupillán volcano (39.5°S/71.7°’W) is a compound stratovolcano that comprises a basalt to dacite rock-suite. It has an extensive postglacial explosive record, which includes many pyroclastic flow and ash-fall deposits. Its morphostructural features show two nested calderas.
When did Lanin erupt?
about 2200 years ago
A small lava dome at the summit fed blocky lava flows to the north about 2200 years ago. Lanín was reported active after an earthquake in 1906, but Sapper (1917) stated that newspaper accounts are strongly disputed, and no historical eruptions are known.
How is a shield volcano different from a stratovolcano?
That’s because the viscous volcanic material doesn’t flow that far from where it is erupted, so it builds up in layers forming a cone-shaped volcano known as a stratovolcano. Shield volcanoes, on the other hand, have gentle slopes that are less than 10° and erupt more fluid lavas called basalt.
When did shield volcano last erupt?
| Kīlauea | |
|---|---|
| Age of rock | 210,000 to 280,000 years old |
| Mountain type | Shield volcano, hotspot volcano |
| Volcanic arc/belt | Hawaiian–Emperor seamount chain |
| Last eruption | September 29, 2021 – present |
Where is Lanin volcano in Argentina and Chile?
Lanín is an ice-clad, cone-shaped stratovolcano on the border of Argentina and Chile. It forms part of two national parks: Lanín in Argentina and Villarrica in Chile.
Why is Lanin volcano important to Neuquen Province?
Nowadays Lanín volcano is one of the symbols of Neuquén, a province with deep Mapuche roots, being a main part of the provincial badge and anthem: “ The reason for its idea came to look over distances / And discovered another dawn standing over Lanín “
Where did the name Lanin volcano come from?
The origin of the Lanín name is quite confusing, as there are several different version on the subject: for some, it comes from and old Mapuche word meaning “dead rock”. Some others say that the meaning of that word in Mapuche language is “sink” or “we are sinking”, referring to the difficulty of walking through the volcanic ashes and the snow.
What kind of climate does Lanin volcano have?
Higher than 3,000 m the climate is the one typical of high mountains, with a great accumulation of snow and the presence of glaciers. Geologically Lanín is a stratovolcano, a conical volcano built up by many strata of hardened lava, tephra, pumice and volcanic ash.