Print this article Print all entries for this topic Cite this article. The relative dating is the technique to ascertain the age of the artifacts, rocks or even sites while comparing one from the other. This process results in a "rain" of pollen that falls over many types of environments. The amount of 40Ar formed is proportional to the decay rate half-life of 40K, which is 1. If a certain kind of pollen is found in an archaeological site, scientists can check when the plant that produced that pollen lived to determine the relative age of the site. Eventually, a regional master chronology is constructed. An Interdisciplinary Perspective.
Mountains have been built and eroded, continents and oceans have moved great distances, and the Earth has fluctuated from being extremely cold and almost completely covered with ice to being very warm and ice-free.
Relative Vs. Absolute Dating: The Ultimate Face-off
Once one reversal has been related to the GPTS, the numerical age of the entire sequence can be determined. Some volcanic minerals and glasses, such as obsidian, contain uranium U. The force causing materials, particularly those made of iron and other certain metals, to attract or repel each other; a property of materials that responds to the presence of a magnetic field normal polarity: Potassium-argon dating relies on the fact that when volcanic rocks are heated to extremely high temperatures, they release any argon gas trapped in them. The half-life of U is 4. Dating techniques are procedures used by scientists to determine the age of an object or a series of events.