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The word lava comes from Italian and is probably derived from the Latin word labes, which means a fall or slide. [2] [3] An early use of the word in connection with extrusion of magma from below the surface is found in a short account of the 1737 eruption of Vesuvius, written by Francesco Serao, who described "a flow of fiery lava" as an analogy to the flow of water and mud down the flanks of ...
The tubes, which were spotted in the midst of the 2021 eruption, were first explored in June 2022 after work crews rebuilding roads over the hardened lava. The system, which extends between 65 feet (20 m) to 200 feet (61 m) under the hardened lava flow, is made up of three distinct levels and may be the longest in Europe.
Stratovolcano. Mount Rainier, a 4,392 m (14,411 ft) stratovolcano, the highest point in the US state of Washington. Exposed internal structure of alternating layers of lava and pyroclastic rock in the eroded Broken Top stratovolcano in Oregon. A stratovolcano, also known as a composite volcano, is a conical volcano built up by many alternating ...
The volcano previously erupted in March and April of 1984. HONOLULU (AP) — Lava from the world's largest volcano is no longer an imminent threat to the main highway across the Big Island of ...
The volcano spread lava over 26 km 2, with 52 km 2 covered in volcanic sand. [9] The town of Parícutin, which once had a population of 733, is now completely gone, and all that remains of the town of San Juan Parangaricutiro, with a former population of 1,895, are parts of its main church which stand out among the hardened lava flow. [7] [11] [13]
The extremely hot, relatively buoyant plutons, also called plutonic diapirs, intruded through denser, native country rock and sediments, never reaching the surface. At the same time, some magma managed to reach the surface as volcanic lava flows, but most of it cooled and hardened below the surface and remained buried for millions of years.
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. The process that forms volcanoes is called volcanism. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and because most of Earth ...
Mount Etna, or simply Etna (Italian: Etna or Mongibello [mondʒiˈbɛllo]; Sicilian: Muncibbeḍḍu [mʊntʃɪbˈbɛɖɖʊ] or 'a Muntagna; Latin: Aetna; Ancient Greek: Αἴτνα and Αἴτνη [5]), is an active stratovolcano on the east coast of Sicily, Italy, in the Metropolitan City of Catania, between the cities of Messina and Catania.