Geochemical refers to the study of the chemical composition and processes of the Earth and its materials. This field examines how elements and compounds interact within the Earth's crust, atmosphere, and oceans. Geochemists analyze soil, water, and rock samples to understand natural processes and human impacts on the environment. The discipline is essential for various applications, including mineral exploration, environmental monitoring, and climate change research. By understanding the distribution of elements and their chemical behavior, scientists can make informed decisions about resource management and environmental protection.