Rock core refers to cylindrical samples of rock that are extracted from the Earth using a drilling process. These samples provide valuable information about the geological layers beneath the surface, including their composition, structure, and history. Rock cores are essential for various fields, such as geology, mining, and petroleum exploration, as they help scientists and engineers understand the subsurface environment. The process of obtaining rock cores involves drilling into the ground with specialized equipment, which removes a core of rock from the surrounding material. This core is then analyzed in laboratories to determine its physical and chemical properties. The data gathered from rock cores can inform decisions related to resource extraction, environmental assessments, and earthquake studies.