Examples of igneous rocks. Granite; Basalt; Pumice; Gabbro; Metamorphic Rock Type. Metamorphic rocks form from a previously existing rock, be it igneous, sedimentary or even an older metamorphic rock.

Examples of sedimentary rocks include limestone, sandstone shale and mudstone. Sandstone is rough to the touch, porous and its sedimentary layering is often visible.

Organisms that live in topographically low places (such as lakes or ocean basins) have the best chance of being preserved. This is because they are already in locations where sediment is likely to ...

Rock Types: Igneous, Sedimentary, and Metamorphic Rocks Explained. Posted: March 12, 2025 | Last updated: March 12, 2025. This 1930s educational film explores the natural landscapes, geological ...

Sedimentary and extrusive igneous rocks are originally laid down in horizontal layers and any change from that is viewed as a disturbance of those layers (something happened later) - folding, tilting ...

This is a beginner's guide to identifying UK rock types. The guide has two main sections: background information on the structure and forces affecting the Earth in relation to rock formation; a more ...