Mafic igneous rock. ( due to Ferromagnesian minerals).
igneous rock
The magma is primarily granitic/rhyolitic, but there are occasional basaltic lava flows.
If the magma cools on the surface of the crust, it is called extrusive igneous rock, such as pumice, basalt or rhyolite. If the magma cools inside the crust, it is called intrusive igneous rock, such as granite.
Intrusive igneous rocks are formed by slow cooling magma below the earth's surface. Extrusive igneous rock is formed by magma cooling quickly, at or near the surface.
Shield volcanoes are fed by basaltic magma.
When magma cools, it forms igneous rock.
Igneous rocks form from magma as it cools and solidifies. Examples include granite, basalt, and obsidian.
igneous rock
Igneous rocks
Intrusive Igneous Rock.
Basaltic magma is produced at the coolest temperatures because it has a lower silica content and therefore has a lower melting point compared to other types of magma. This type of magma typically erupts quietly and forms basaltic rock, such as the kind found at mid-ocean ridges.
Pegmatite is an igneous rock that forms in the final stage of magma crystallization. It typically contains large crystals due to the slow cooling of the magma.
Extrusive igneous rocks. The type of extrusive igneous rock is determined by the composition of the lava.
Rhyolite is an igneous rock that forms near the Earth's surface through the rapid cooling and solidification of silica-rich magma.
The magma is primarily granitic/rhyolitic, but there are occasional basaltic lava flows.
Basaltic magma usually produces a Hawaiian or Stombolian style of eruption.
Usually a dense basaltic magma with low water content.