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Nicolaus Steno (1638-1686) introduced basic principles of becoming known as “the Father of English Geology.” Nineteenth-century scientists developed a relative time scale using Steno’s principles, with names derived from the characteristics of the rocks in those areas.

The figure of this geologic time scale shows the names of the units and subunits.

By combining knowledge gained using both relative and absolute dating processes geologists have been able to produce the geologic time scale.CC BY-SA 4.0], via Wikimedia Commons' src=" alt="It shows two paths" width="254" height="300" srcset=" sizes="(max-width: 254px) 85vw, 254px"/ is when a proton in the nucleus captures an electron from one of the electron shells and becomes a neutron.This produces one of two different effects: 1) an electron jumps in to fill the missing spot of the departed electron and emits an X-ray, or 2) in what is called the Auger process, another electron is released and changes the atom into an An atom that has different number of neutrons but the same number of protons.Relative time places events or formations in order based on their position within the rock record relative to one another using six principles of relative dating.Relative time can not determine the actual year a material was deposited or how long deposition lasted; it simply tell us which events came first.

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