Relative dating of fossil Chat hard no reg

In a way this field, called geochronology, is some of the purest detective work earth scientists do.There are two basic approaches: relative age dating, and absolute age dating.

However, unlike tree-ring dating -- in which each ring is a measure of 1 year's growth -- no precise rate of deposition can be determined for most of the rock layers.

He concluded, after studying rocks at many outcrops, that each layer represented a specific interval of geologic time.

Further, he proposed that wherever un-contorted layers were exposed, the bottom layer was deposited first and was, therefore, the oldest layer exposed; each succeeding layer, up to the topmost one, was progressively younger.

Relative dating is a dating method that used to determine determine the relative ages of geologic strata, artifacts, historical events, etc.

This technique does not give specific ages to items.