Igneous rocks close igneous rockIgneous rocks ... If magma erupts on the surface as lava, it will form extrusive rock, e.g. basalt. These rocks are formed when magma solidifies.

The word igneous comes from the Latin for fire ‘ignis’. This gives us a clue as to their formation because they are the result of massive volcanic activity millions of years ago. Basalt is ...

Rose says in the middle of the Keweenaw basalt is a middle layer of pegmatoids, a type of igneous rock with notably coarse grains that produce giant crystals. Keeping a tradition alive ...

Geodynamics Modeling; Large Igneous Provinces and Global Climate Perturbations; Tectonics and Magmatism at Large Igneous Provinces and Divergent Plate Boundaries I have intrinsic motivation in ...