It is less dense than basalt, which causes oceanic plates to subduct below tectonic plates made of this type of rock.
This rock is similar in composition to pegmatite and aplite, and it can be classified as I or S type. This rock is a common component of batholiths. It has relatively high sodium and potassium levels compared to magnesium and calcium. A finer-grained form is rhyolite. It is rich in alkali feldspars and (*) quartz. It is less dense than basalt, which causes oceanic plates to subduct below tectonic plates made of this type of rock. For 10 points, name this light-colored felsic igneous rock which makes up a major portion of the continental crust.
This rock is similar in composition to pegmatite and aplite, and it can be classified as I or S type.
granite