1. Basalt: A dark-colored, fine-grained volcanic rock, common in oceanic crust.

2. Granite: A light-colored, coarse-grained intrusive rock, often found in continental crust.

3. Rhyolite: A light-colored, fine-grained volcanic rock, often associated with explosive eruptions.

4. Gabbro: A dark-colored, coarse-grained intrusive rock, often found in oceanic crust.