Thin section of dredged rocks. Overview of the Dredged Rock CollectionDredged rock material in the Collection date. ... and manganese nodules as well as very rare igneous, metamorphic, and mantle ...

Microbiologists have made a groundbreaking discovery in a 2-billion-year-old rock located in northeastern South ...

Characteristics of igneous rocks. These rocks are formed when magma solidifies. As the magma cools, mineral crystals will begin to grow. These crystals will grow and interlock to form a hard ...