Start Relative dating principles of rocks

Relative dating principles of rocks

Unlike people, you can’t really guess the age of a rock from looking at it.

The geologic timescale is a chronology (calendar) of events on Earth based on obtaining ages of past events.

(relative geologic timescale) (b) Absolute Dating Following the discovery of radioactivity in 1895, radiometric dating techniques were developed to determine the absolute ages, i.e. In the succession of strata, each layer represents the geographical conditions that occurred over that area at the time the layer was deposited.

In each period of earth's history different fauna and flora evolved with similar faunas being characteristic of similar beds.

In a way this field, called geochronology, is some of the purest detective work earth scientists do.