Here's why:
* Low Silica Content: Mafic rocks are characterized by a low silica content (typically 45-52%). This makes them less viscous, meaning they flow more easily.
* High Iron and Magnesium Content: Mafic rocks are rich in iron and magnesium, giving them a darker color. These minerals have lower melting points, contributing to their fluidity.
* Common Examples: Basalt is a common example of a mafic igneous rock. It's often found in volcanic flows and is responsible for many oceanic crust formations.
Other mafic rocks:
* Gabbro: A coarse-grained mafic rock formed underground.
* Diabase: A fine-grained, intrusive mafic rock.
In contrast to mafic rocks, felsic rocks have a high silica content and are more viscous, making them less likely to flow easily.
