Relative versus absolute dating techniques
This method is based on the assumption (which nearly always holds true) that deeper layers of rock were deposited earlier in Earth's history, and thus are older than more shallow layers.
The successive layers of rock represent successive intervals of time.
The style of the artefact and its archaeology location stratigraphically are required to arrive at a relative date.
For example, if an artefact, say an oil lamp, is found co-located on the same floor of a governor's dwelling, and that floor can be dated in archaeology terms by reason of the patterns employed in the mosaic, then it is assumed that in relation to the floor that the lamp is of the same age.
When museums and collectors purchase archaeological items for their collections they enter an expensive and potentially deceptive commercial fine arts arena.
Healthy profits are to be made from illicitly plundered ancient sites or selling skillfully made forgeries.
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.
The main relative dating method is stratigraphy (pronounced stra-TI-gra-fee), which is the study of layers of rocks or the objects embedded within those layers.How much of your life do you spend thinking about time? Time comes in different forms in geology, mainly absolute and relative.They are both important in terms of Earth's history and its geological timeline, and they work together in concert to build the planet's geological record.The underlying principle of stratigraphic analysis in archaeology is that of superposition.This term means that older artefacts are usually found below younger items.