Thermochronology is a branch of geochronology that uses the temperature history of a rock to determine its geological age. By studying the thermal evolution of rocks, thermochronologists are able to gain insights into the timing and duration of geological processes such as mountain building, erosion, and cooling. This information can help scientists understand the tectonic history and past environmental conditions of a region. Thermochronology techniques include methods such as fission track dating, apatite (U-Th)/He dating, and zircon fission track analysis.