Basalt - Wikipedia
WEBBasalt (UK: / ˈbæsɔːlt, - əlt /; [ 1 ] US: / bəˈsɔːlt, ˈbeɪsɔːlt /) [ 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 …
Basalt: Igneous Rock - Pictures, Definition, Uses & More
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 | Definition, Properties, & Facts | Britannica
WEB3 days ago · 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
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.
A Guide to Basalt: A Common, Fine-grained, Dark-Colored …
WEBAug 17, 2023 · Basalt is a common and widely used, fine-grained, dark-colored mafic volcanic rock. It has mainly calcic plagioclase feldspar and augite.
Basalt | Properties, Formation, Composition, Uses - Geology Hub
WEBBasalt 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 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 …
What Is Basalt? - ThoughtCo
WEBFeb 2, 2019 · Basalt is the dark, heavy volcanic rock that makes up most of the world's oceanic crust. Some of it erupts on land, too, but to a first approximation, basalt is an oceanic rock. Compared to the familiar granite of the continents, basalt ("ba-SALT") is darker, denser and finer grained.
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”...