Have you ever wondered, “How do geologists know how old a rock is?” Geochronology is the science of determining how old rocks, sediments and fossils are. Whether they formed 4 billion years ago or within the historic record, geologists can employ geochronologic methods to determine either the relative or absolute ages of these materials. Radiometric dating–which measures… Continue reading Introduction to Geochronology
Emily Zawacki, Ph.D. 