What is absolute and relative age dating

To discuss the divisions of geologic time, it is necessary first to discuss the concepts of relative and absolute time.

The term relative refers to a quality or quantity that is comparative, or dependent on something else.

In radiometric dating, the radioactive minerals within the rocks are used to know about the age of the object or the sites.

The study of geologic time is encompassed within the larger subject of historical geology.

Contrary to this, the absolute dating is the technique, using which the exact age of the artifacts, fossils, or sites are ascertained.

As the word relative tells that defining the object with respect to the other object, it will be pertinent to mention here that actual numerical dates of the rocks or sites are not known in this type of dating.

Other than rocks, fossils are the other most important elements in the relative dating as many organisms have there remain in the sedimentary rocks.

The relative dating is the technique to ascertain the age of the artifacts, rocks or even sites while comparing one from the other.

In relative dating the exact age of the object is not known; the only thing which made clear using this is that which of the two artifacts is older.

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The chronostratigraphic scale likewise has six time units, analogous to those of the geologic scale: eonothem, era them, system, series, stage, and chronozone.

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  1. This just goes to show that just because independent estimates of age seem to agree with each other doesn't mean that they're correct - despite the fact that this particular argument is the very same one used to support the validity of radiometric dating today.