👉 In the context of science and geography, a geologist is an individual who studies Earth's geological processes and their effects on its inhabitants. Geologists study rocks, minerals, and other natural materials to understand how they have been formed, transformed, or changed over time. Geologists are usually trained in fields such as geophysics, mineralogy, palaeontology, and geology. They use a variety of methods, including drilling, sampling, and laboratory analysis, to gather information about the Earth