Ways dating artifacts
The business of archeology is done in an extremely careful manner in order to provide the most accurate results; this is often very time consuming and can last days, months, or even years.Over the years, archaeologists have compiled their findings into large databases containing information about the types of artifacts that correspond with difference civilizations, and the types of soil in which they usually found. In typology, a researcher studies the material of an artifact, its form, and its most likely purpose.After death the amount of carbon-14 in the organic specimen decreases very regularly as the molecules decay.
By examining the object's relation to layers of deposits in the area, and by comparing the object to others found at the site, archaeologists can estimate when the object arrived at the site.
However, writing was only invented in 5000 BCE, and even then, few people were literate and archival methods were very poor.
Therefore, information of about 99% of the human history can only be retrieved through the study of artifacts and fossils.
Index fossils are fossils that can be used to date the rock in which they are found.
The best examples are fossils of animals or plants that lived for a very short period of time and were found in a lot of places.