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 …

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 …

Apr 23, 2023 · Definition, composition, and characteristics of basalt: Basalt is a fine-grained volcanic rock that forms from the rapid cooling of lava at or near the Earth’s surface. It is …

Mar 8, 2025 · 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 …

Basalt is an extrusive igneous rock composed primarily of plagioclase feldspar and large amounts of mafic minerals like pyroxene. It has an aphanitic texture, meaning its interlocking crystals …

Basalt is a fine-grained, dark-colored igneous rock that makes up over 90% of the Earth's volcanic rock and covers vast areas of the ocean floor. It's formed from the rapid cooling of molten lava, …

Aug 17, 2023 · Basalt rock is fine-grained, dark-colored volcanic rock with essentially Mg-rich plagioclase and augite. It is basic or low in silica (42-52 wt. %) mafic (Mg- and Fe-rich) rock, …

Basalt is one of the most common and widespread igneous rocks on Earth, making up much of the oceanic crust and significant portions of continental crust. This dark-colored volcanic rock …

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 …

Basalt is a finely granulated igneous rock, which is usually black or gray in color. Most basalt rocks are primarily composed of the minerals pyroxene and feldspar. These rocks are formed …