Tephrochronology

Tephrochronology is a scientific method used to date layers of soil or sediment by analyzing volcanic ash deposits. When a volcano erupts, it ejects ash that can fall over large areas, creating distinct layers in the geological record. By identifying the specific chemical composition and age of these ash layers, researchers can establish a timeline for when certain events occurred, such as climate changes or human activity. This technique helps scientists better understand Earth's history, environmental changes, and even archaeological findings, providing valuable insights into the past.