What is geochronology?

Geochronology is the scientific discipline dedicated to determining the age of rocks, fossils, and sediments using signatures inherent in the materials themselves. Absolute dating can be achieved through radioactive isotopes, while relative dating methods rely on tools like paleomagnetism and stable isotope ratios. By combining multiple indicators, scientists can significantly improve the precision of geological timelines.

What we know

• Geochronology is the science of determining the age of rocks, sediments, and fossils. [1, 2]
• Absolute geochronology is accomplished using radioactive isotopes, whereas relative geochronology uses tools such as paleomagnetism and stable isotope ratios. [2]
• Geochronology serves as the prime tool used in chronostratigraphy to derive absolute age dates and determine Earth's geologic history. [2]
• Combining multiple geochronological and biostratigraphic indicators improves the precision of the recovered age. [2]

Where to go next

• compared withHow does biostratigraphy differ from geochronology?
• what followedWhat is chronostratigraphy?
• a case in pointHow does monazite geochronology work?
• the bigger pictureWhat are Earth sciences?
• how it workedHow do radioactive isotopes determine absolute age?
• an unexpected connectionHow does geochronology study extraterrestrial bodies?Geochronology is not restricted to Earth and serves as a prime tool in chronostratigraphy to determine the geologic history of extraterrestrial bodies as well.

Sources

• [1]geochronology (Wikidata Q213891) · CC0 1.0
• [2]Geochronology · CC BY-SA 4.0
• [3]Outline of Earth science · CC BY-SA 4.0
• [4]Index of branches of science · CC BY-SA 4.0
• [5]Monazite geochronology · CC BY-SA 4.0