The following is a list of rock types recognized by geologists. There is no agreed number of specific types of rock. Any unique combination of chemical composition, mineralogy, grain size, texture, or …

Jul 9, 2023 · Learn about the three types of rocks: igneous, sedimentary, and metamorphic. Learn their characteristics and get examples of each type.

Jun 19, 2025 · List of all Igneous, Sedimentary, and Metamorphic Rock Types with Pictures and Links to Specific Articles about each Type of Rock.

Dec 19, 2025 · Learn about rocks, their types, formation processes, characteristics, and uses. A clear guide to igneous, sedimentary, and metamorphic rocks.

Nov 25, 2025 · 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 …

In summary, the three primary types of rocks — igneous, sedimentary, and metamorphic — are distinguished by their formation processes, mineral composition, and texture.

The three main rock types are igneous, sedimentary, and metamorphic. Crystallization, erosion and sedimentation, and metamorphism transform one rock type into another or change sediments into rock.

To grasp the significance of rocks, one must delve into the three primary types: igneous, sedimentary, and metamorphic. Each serves a unique role in geology, telling stories of formation, erosion, and …

There are three basic types of rock: igneous, sedimentary, and metamorphic. Extremely common in the Earth's crust, igneous rocks are volcanic and form from molten material.

Photographs and information for a large collection of igneous, metamorphic and sedimentary rocks. Geology.com