Basalt - Wikipedia
Basalt (UK: / ˈ b æ s ɒ l t,-ɔː l t,-əl t /; [1] [2] US: / b ə ˈ s ɔː l t, ˈ b eɪ s ɔː l t /) [3] 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 ...
Basalt: Igneous Rock - Pictures, Definition, Uses & More - Geology.com
Basalt 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 …
Basalt | Definition, Properties, & Facts | Britannica
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 | Properties, Formation, Composition, Uses - Geology Science
2023年4月23日 · Basalt is one of the most common rock types on Earth, and it can be found in various locations around the world, both on land and under the ocean floor. Basalt is known for its dark color, typically ranging from black to dark gray, and its fine-grained texture.
A Guide to Basalt: A Common, Fine-grained, Dark-Colored …
2023年8月17日 · Basalt is a common and widely used, fine-grained, dark-colored mafic volcanic rock. It has mainly calcic plagioclase feldspar and augite.
Basalt: Composition, Properties, Types, Uses – Geology In
Basalt is defined as a fine-grained, dark-colored igneous rock composed mainly of plagioclase and pyroxene minerals, with or without olivine. It is formed from the rapid cooling of basaltic lava exposed at or very near the surface of the Earth (extrusive or volcanic rock).
Basalt | Properties, Formation, Composition, Uses - Geology Hub
Basalt is a dark-colored, dense rock composed primarily of plagioclase feldspar and pyroxene. It is the most common rock type found in oceanic crust and is an important component of the Earth’s continental crust.
Basalt - Simple English Wikipedia, the free encyclopedia
Basalt is a type of intrusive rock meaning it forms inside of the volcano. Basalt has also formed on Earth's Moon , Mars , Venus , and even on the asteroid Vesta . The crustal portions of oceanic tectonic plates are made mostly of basalt, produced …
Basalt - (Intro to Geology) - Vocab, Definition, Explanations
Basalt is a fine-grained, dark-colored igneous rock that forms from the rapid cooling of lava at or near the Earth's surface. It is the most common type of volcanic rock and is primarily composed of plagioclase feldspar and pyroxene, giving it a distinctive texture and mineral composition.
What is basalt ? - A geologist explains - YouTube
2022年6月19日 · #geology #basalt What is basalt and what are basaltic rocks? Geologist Dr Brooke Johnson explains in this video and gives a quick introduction to basaltic ig...