Rock, Definition, Characteristics, Formation, Cycle, Classification, Types, & Facts

Rock, in geology, naturally occurring and coherent aggregate of one or more minerals. Such aggregates constitute the basic unit of which the solid Earth is composed and typically form recognizable and mappable volumes. The three major classes of rock are igneous, sedimentary, and metamorphic rock.

What is Rock, Types of Rocks and Classification

Types of Rocks

Igneous Rocks – Definition, Types, Examples, & Pictures

Foliated Metamorphic Rocks Definition & Examples - Video

Developing Criteria to Distinguish Rocks

The Rock Cycle: Learn The Types Of Rocks & Minerals

Classification of Rocks with Examples - The Constructor

Geography: Types of Rocks

Metamorphic Rocks : Definition, Types, Classification, Examples

Rocks and minerals - British Geological Survey