Pertaining to geology

The period of time over which Earth has formed, especially the time prior to human history

A person who studies the Earth, including Earth materials and Earth processes

The study of the structure, process, and history of the solid earth.

Loose rock fragments larger than 2 millimeters and smaller than 75 millimeters.

A very high resolution image customarily created by connecting numerous smaller images into a single larger image.

A set of numbers that describes your location on or above the earth as determined by the global positioning system (GPS). GPS is a network of satellites and ground stations that forms a worldwide navigation system.

A marine, freshwater, or terrestrial invertebrate animal belonging to the Class Gastropoda of the Phylum Mollusca, and characterized by a single, coiled shell, a muscular foot for gliding, and internal asymmetry caused by an embryonic process (torsion). Gastropods include snails and slugs.