explain with example different types of landform produced by volcanic eruption
Answers
Volcanoes and Vents
The most obvious landforms created by lava are volcanoes. These are mostly cinder cones, composite volcanoes, and shield volcanoes. Eruptions also take place through other types of vents, commonly from fissures (Figure below). The eruptions that created the entire ocean floor are essentially fissure eruptions.
A fissure eruption on Mauna Loa in Hawaii travels toward Mauna Kea on the Big Island
A fissure eruption on Mauna Loa in Hawaii travels toward Mauna Kea on the Big Island
Lava Domes
When lava is thick, it flows slowly. If thick lava makes it to the surface, it cannot flow far from the vent. It often stays right in the middle of a crater at the top of a volcano. Here the lava creates a large, round lava dome . Lava flows often make mounds right in the middle of craters at the top of volcanoes
Lava domes forming in the crater of Mount St. Helens
Lava domes may form in the crater of composite volcanoes, as at Mount St. Helens.
Lava Plateaus
A lava plateau is made of a large amount of fluid lava. The lava flows over a large area and cools. This creates a large, flat surface of igneous rock. Lava plateaus may be huge. The Columbia Plateau covers over 161,000 square kilometers (63,000 square miles). It makes up parts of the states of Washington, Oregon, and Idaho.
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Explanation:
Volcanic eruptions pull materials up from deep within the earth to form various volcanic landforms, such as lava domes, lava plateaus, fissure eruptions, craters and calderas.
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