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Definition of chronometric dating

Which of these does a better job of describing my age? So, in both geology and paleontology, we want to be able to point to an object and say exactly how old it is.

To do that, we have to learn a little bit about radioactive decay.

Scientists piece together a story of how one event came before or after another.

Relative dating cannot tell us the actual age of a rock; it can only tell us whether one rock is older or younger than another.

Scientists know that the layers they see in sedimentary rock were built up in a certain order, from bottom to top.

Stratigraphic and fossil succession are good tools for studying the relative dates of events in Earth's history, but they do not help with numerical dating.

The most common form of relative dating is called stratigraphic succession.

This is just a fancy term for the way rock layers are built up and changed by geologic processes.

One of the biggest jobs of a geologist is establishing the absolute age, in years, of a rock or fossil.

Unlike relative dating, which only tells us the age of rock A compared to rock B, numerical dating tells us the age of rock A in x number of years.


  1. Recommended Lessons and Courses for You. Related Lessons; Related Courses. Numerical and Relative Geological Dating. What is Relative Dating? - Law of Superposition, Principles of Original Horizontality & Cross-Cutting Relationships. Principles of Radiometric Dating. Stratification Definition, Theory & Examples.

  2. Dates are imprecise because of errors that can occur during the collection and measurement of samples. Therefore, they are given with a range of values. –E.g. 1.75 + 0.2 million years means that there is a 67% chance that the date falls into the range of 1.55 - 1.95 million years, and a 33% chance that the true date is.

  3. University of California, USA. Keywords Dating methods, chronometric dating, seriation, stratigraphy, geochronology, radiocarbon dating, potassium-argon/argon-argon dating, Pleistocene. Quaternary. Contents. Since a fundamental definition of evolution is “change over time,” chronology is a fundamental archaeological.

  4. Get information, facts, and pictures about Dating Techniques at Make research projects and school reports about Dating Techniques easy with credible articles from our FREE, online encyclopedia and dictionary.

  5. Dendrochronology is a method that studies the rings of tree trunks to define characteristic sequences by analyzing the morphology of growth rings for a given species. R. E. Taylor and M. J. Aitken editors, Chronometric Dating in Archaeology 1997; W. Y. Adams and E. W. Adams, Archaeological Typology and Practical.

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