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Basalt 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 Earth is basalt. Rapid-cooling, fine-grained basalt … See more
Basalt is composed mostly of oxides of silicon, iron, magnesium, potassium, aluminum, titanium, and calcium. Geologists classify igneous rock by its mineral content whenever possible, with the relative volume … See more
Earth
Basalt is the most common volcanic rock type on Earth, making up over 90% of all volcanic rock on the … See moreThe common corrosion features of underwater volcanic basalt suggest that microbial activity may play a significant role in the chemical exchange between basaltic rocks and … See more
• Basalt fan structure – Rock formation
• Basalt fiber – Structural fibres spun from melted basalt
• Bimodal volcanism – Eruption of both mafic and felsic lavas from a single volcanic centre See moreBasalt is used in construction (e.g. as building blocks or in the groundwork), making cobblestones (from columnar basalt) and in making See more
Wikipedia text under CC-BY-SA license Basalt - Simple English Wikipedia, the free encyclopedia
WebBasalt is a common grey to black rock. It is pushed out ( extruded) by volcanos. The lava is rich in magnesium and iron. It has olivine and pyroxene minerals which make it dark in …
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Basalt - Wikipedia, den frie encyklopædi
Basalt er en bjergart opstået ved størkning af magma. Basalt består af diverse silikater f.eks. olivin, pyroxen, amfibol og anorthit (Ca-rig feldspat). Densiteten af basalt er mellem 2,8 og 3,011 g pr cm .
Havbunden under de sedimentære aflejringer består af basalt. Den er den hyppigst forekommende bjergart på overfladerne af Jorden, Merkur, Venus, MarsWikipedia · Text under CC-BY-SA license- Estimated Reading Time: 2 mins
Basalt - Wikiwand
WebBasalt is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron exposed at or very near the surface of a …
Basalt | Definition, Properties, & Facts | Britannica
WebMay 24, 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 …
Basalt: Igneous Rock - Pictures, Definition, Uses
WebLearn about basalt, a dark-colored, fine-grained igneous rock that forms from the cooling of magma. Find out how basalt is distributed on Earth, the Moon and Mars, and how it is used in construction and industry.
Basalt | Properties, Formation, Composition, Uses
WebApr 23, 2023 · Basalt is a dark-colored, fine-grained volcanic rock that is common on Earth. Learn about its composition, characteristics, types, and applications in geology, construction, and culture.
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