Basalt - Wikipedia
WEBBasalt (UK: / ˈ b æ s ɔː l t,-əl t /; [1] US: / b ə ˈ s ɔː l t, ˈ b eɪ s ɔː l t /) [2] is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon. More than 90% of all volcanic rock on ...
Basalt | Properties, Formation, Composition, Uses - Geology Science
WEBApr 23, 2023 — Basalt is a mafic volcanic rock that forms from the solidification of basaltic magma and exhibits a characteristic fine-grained texture. Its composition, texture, and classification provide insights into the processes involved in its formation and the geochemical characteristics of the mantle and crust.
Basalt: Igneous Rock - Pictures, Definition, Uses & More - Geology.com
WEBBasalt is a dark-colored, fine-grained, igneous rock composed mainly of plagioclase and pyroxene minerals. It most commonly forms as an extrusive rock, such as a lava flow, but can also form in small intrusive bodies, such as an igneous dike or a thin sill. It has a composition similar to gabbro.
Basalt | Properties, Formation, Composition, Uses - Geology Hub
WEBRaw Material for Mineral Wool: Basalt is used in the production of mineral wool, which is a type of insulation material. When basalt is melted and spun into fibers, it forms a lightweight and fire-resistant insulating product.
Basalt: Identification, Pictures & Info for Rockhounds
WEBBasalt is usually gray, brown, or black, and often contains features like vesicles and phenocrysts. The vesicles in basalt are the remnants of gas bubbles that became trapped in the lava as it cooled. They are usually oval in shape and can range in size from very small to golf ball sized or larger.
Basalt | Definition, Properties, & Facts | Britannica
WEBSep 27, 2024 — Basalt, extrusive igneous (volcanic) rock that is low in silica content, dark in color, and comparatively rich in iron and magnesium. Basalts may be broadly classified on a chemical and petrographic basis into two main groups: the tholeiitic and the alkali basalts.
Basalt Rocks: Identification, Characteristics, Pictures, and More
WEBMar 17, 2024 — As basalt rocks cool rapidly from molten lava, their physical characteristics emerge, revealing important details about their composition and properties. Basalt rock formations are primarily the result of volcanic activity and can be found in various geological settings worldwide.
Basalt - Igneous rocks - Sandatlas
WEBBasalt is the original constituent of the crust from which almost all other rock types have evolved. Basalt forms when mantle rocks (peridotite) start to melt. Rocks melt incongruently. It basically means that melt that forms has a different composition from the source rocks.
Basalt: characteristics, formation, uses - ZME Science
WEBJan 4, 2024 — Basalt is a fine-grained, extrusive igneous rock predominantly formed from the rapid cooling of mafic lava, which is low in silica and rich in magnesium and iron. In geology, “extrusive”...
Basalt - Natural Atlas
WEBBasalt (US: , UK: ) is a fine-grained extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or a moon. More than 90% of all volcanic rock on Earth is basalt.
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