mainly glassy with amygdules and glass
Mafic igneous rock. ( due to Ferromagnesian minerals).
Basalt or gabbro. Mafic igneous rock.
Shield volcanoes are formed from the extrusive igneous rock basalt.basalt
Lava flows in Hawaii are an example of Mafic Lava. Mafic Lava is composed of Basaltic rocks of which tend to have high levels of iron and magnesium.
basaltic
There sedimentary igneous and metemorphic
Intrusive rock
Mafic igneous rock. ( due to Ferromagnesian minerals).
Both are classified as igneous rock.
Greenstone is the rock that has characteristics of both igneous and metamorphic rock.When you break this rock you will see the basaltic composition but it is formed when a basalt is subjected to a different temperature and pressure.
Basalt
Basaltic Igneous Rocks
Andesitic igneous rock.
Basalt or gabbro. Mafic igneous rock.
Dark green to black.
andesitic rock
Basaltic glass