The actual rock depends on what type of eruption you're talking about. The general classification would be igneous rock. Here are some specific examples:
Lahars are mainly produced by stratovolcanoes, which are tall, steep-sided volcanoes composed of layers of hardened lava, ash, and volcanic rocks. These volcanoes are prone to explosive eruptions that can melt snow and ice, triggering lahars when the volcanic material mixes with water and flows down the volcano slopes.
Mount Etna in Sicily, Italy, is a stratovolcano that typically experiences effusive eruptions, characterized by the gentle outpouring of lava. However, it can also have explosive eruptions, which involve the ejection of ash, gas, and volcanic rocks into the air. The type of eruption can vary depending on the specific circumstances at the time of the eruption.
Volcanoes contain a variety of rocks and minerals such as basalt, andesite, rhyolite, obsidian, pumice, and granite. Volcanic rocks are typically rich in silicate minerals like quartz, feldspar, and olivine, with varying amounts of volcanic glass and pyroclastic material. Minerals like sulfur, pyrite, and magnetite can also be found in volcanic environments.
Low silica magma typically forms mafic rocks, which are rich in iron and magnesium and contain lower amounts of silica. Common examples of these rocks include basalt and gabbro. Due to their lower viscosity, low silica magmas tend to flow more easily, resulting in relatively gentle volcanic eruptions.
Mt. Hibok-Hibok is classified as a stratovolcano, which is a tall, conical volcano composed of layers of hardened lava, ash, and volcanic rocks. It is located on Camiguin Island in the Philippines and has had multiple eruptions in history.
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Metamorphic, along with volcanic and plutonic igneous rocks.
Lahars are mainly produced by stratovolcanoes, which are tall, steep-sided volcanoes composed of layers of hardened lava, ash, and volcanic rocks. These volcanoes are prone to explosive eruptions that can melt snow and ice, triggering lahars when the volcanic material mixes with water and flows down the volcano slopes.
Volcanic activity produces extrusive igneous rock.
A mixture of volcanic and sedimentary rocks -AlanKeo
Rocks formed by volcanic activity are called igneous rocks. These rocks form when molten magma cools and solidifies either above or below the Earth's surface. Examples of volcanic igneous rocks include basalt, andesite, and rhyolite.
Mount Etna in Sicily, Italy, is a stratovolcano that typically experiences effusive eruptions, characterized by the gentle outpouring of lava. However, it can also have explosive eruptions, which involve the ejection of ash, gas, and volcanic rocks into the air. The type of eruption can vary depending on the specific circumstances at the time of the eruption.
Volcanoes contain a variety of rocks and minerals such as basalt, andesite, rhyolite, obsidian, pumice, and granite. Volcanic rocks are typically rich in silicate minerals like quartz, feldspar, and olivine, with varying amounts of volcanic glass and pyroclastic material. Minerals like sulfur, pyrite, and magnetite can also be found in volcanic environments.
Japan experiences typhoons, earthquakes, tsunamis, volcanic eruptions, floods, and occasional tornadoes.
Mt. Hibok-Hibok is classified as a stratovolcano, which is a tall, conical volcano composed of layers of hardened lava, ash, and volcanic rocks. It is located on Camiguin Island in the Philippines and has had multiple eruptions in history.
Clastic sedimentary rocks.
Yes, there is early warning before most volcanic eruptions. The primary sign is small earthquakes or land tremors and shakes near the volcano.