Geosciene Careers Related to the Geosphere The geosphere encompasses Earth’s solid components, including the crust, mantle, and core. Careers that study the geosphere investigate Earth’s structure, processes such as plate tectonics, volcanism, and seismic activity, and the distribution of minerals and resources. They utilize fieldwork, laboratory analysis, and advanced imaging techniques to explore geological formations, assess natural hazards like earthquakes and landslides, and conduct mineral exploration for use as raw materials and energy sources.