List of rock types 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 …

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.

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

Apr 19, 2025 · In this article, we’ll break down the three main types of rocks – igneous, sedimentary, and metamorphic in a way that’s easy to follow, informative, and yes, even a bit fun.

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. They include not...

Dec 29, 2025 · Rocks are commonly divided into three major classes according to the processes that resulted in their formation.

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.

These articles explore rocks of all types—from those you climb to those you collect—and explore how they formed and what they can teach us about the past.

Aug 26, 2025 · What a rock is made of, the shapes of the grains, and how the grains fit together all provide valuable clues to help us unlock the rock's history hidden within. Rocks are divided into three …