Mafic and ultramafic magmas are high in dark, heavy minerals like pyroxene, amphibole, and olivine, which contribute to an igneous rock being dark in color with a higher specific gravity than felsic and intermediate magmas and rocks.
Igneous rocks that are dense and dark-colored are called basaltic rocks. They are formed from magma that is rich in iron and magnesium and poor in silica content.
Basalt froms from basaltic lava is heavy, dark-colored, dense lava. Basaltic lava is dark because it contains high amounts of iron and magnesium.
igneous rock
Liquid magma is more dense than the solid material around it.
All igneous rock is the product of hardened magma from the upper mantle, except for igneous rock formed from extraterrestrial impacts.
Igneous rocks that are dense and dark-colored are called basaltic rocks. They are formed from magma that is rich in iron and magnesium and poor in silica content.
basaltic
Basalt froms from basaltic lava is heavy, dark-colored, dense lava. Basaltic lava is dark because it contains high amounts of iron and magnesium.
Igneous rocks are created when magma cools and solidifies either below the Earth's surface (intrusive igneous rocks) or on the surface as lava (extrusive igneous rocks). The rate of cooling affects the crystal size and texture of the rock, with slower cooling producing larger crystals. Examples of igneous rocks include granite, basalt, and obsidian.
Igneous
Mafic and ultramafic magmas are high in dark, heavy minerals like pyroxene, amphibole, and olivine, which contribute to an igneous rock being dark in color with a higher specific gravity than felsic and intermediate magmas and rocks.
Mafic and ultramafic magmas are high in dark, heavy minerals like pyroxene, amphibole, and olivine, which contribute to an igneous rock being dark in color with a higher specific gravity than felsic and intermediate magmas and rocks.
Granitic igneous rocks are light colored rocks of a low density. Granitic magma is thick and stiff and contains a lot of silicon and oxygen. Granitic magma can build up a great deal of pressure, which is released during violent volcanic eruptions.
Mafic igneous rocks, like basalt and gabbro.
Magma is molten rock, and igneous rock is cooled magma.
magma cools to form igneous rock
Igneous rocks are formed by cooling magma.