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15 relations: Crystal, Lithic fragment (geology), Maar, Martinique, Mount St. Helens, Nuclear explosion, Phreatomagmatic eruption, Pyroclastic fall, Pyroclastic flow, Pyroclastic rock, Saint-Pierre, Martinique, Taal Volcano, Types of volcanic eruptions, United States Geological Survey, Volcanologist.
Crystal
A crystal or crystalline solid is a solid material whose constituents (such as atoms, molecules, or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.
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Lithic fragment (geology)
Lithic fragments, or lithics, are pieces of other rocks that have been eroded down to sand size and now are sand grains in a sedimentary rock.
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Maar
A maar is a broad, low-relief volcanic crater caused by a phreatomagmatic eruption (an explosion which occurs when groundwater comes into contact with hot lava or magma).
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Martinique
Martinique is an insular region of France located in the Lesser Antilles of the West Indies in the eastern Caribbean Sea, with a land area of and a population of 385,551 inhabitants as of January 2013.
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Mount St. Helens
Mount St.
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Nuclear explosion
A nuclear explosion is an explosion that occurs as a result of the rapid release of energy from a high-speed nuclear reaction.
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Phreatomagmatic eruption
Phreatomagmatic eruptions are volcanic eruptions resulting from interaction between magma and water.
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Pyroclastic fall
A pyroclastic fall is a uniform deposit of material which has been ejected from a volcanic eruption or plume such as an ash fall or tuff.
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Pyroclastic flow
A pyroclastic flow (also known as a pyroclastic density current or a pyroclastic cloud) is a fast-moving current of hot gas and volcanic matter (collectively known as tephra) that moves away from a volcano reaching speeds of up to.
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Pyroclastic rock
Pyroclastic rocks or pyroclastics (derived from the πῦρ, meaning fire; and κλαστός, meaning broken) are clastic rocks composed solely or primarily of volcanic materials.
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Saint-Pierre, Martinique
Saint-Pierre is a town and commune of France's Caribbean overseas department of Martinique, founded in 1635 by Pierre Belain d'Esnambuc.
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Taal Volcano
Taal Volcano (Bulkang Taal) is a complex volcano located on the island of Luzon in the Philippines.
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Types of volcanic eruptions
Several types of volcanic eruptions—during which lava, tephra (ash, lapilli, volcanic bombs and volcanic blocks), and assorted gases are expelled from a volcanic vent or fissure—have been distinguished by volcanologists.
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United States Geological Survey
The United States Geological Survey (USGS, formerly simply Geological Survey) is a scientific agency of the United States government.
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Volcanologist
A volcanologist or vulcanologist is a geologist who studies the processes involved in the formation and eruptive activity of volcanoes and their current and historic eruptions, known as volcanology.
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