There are two main categories by which they do this: relative age dating and absolute age dating.
In relative age dating, scientists study a material and compare it to other similar materials in order to establish a timeline.
Some scientists prefer to call it calendar age, because the term suggests that the age can be plotted on a calendar.
The Mayan calendar used 3114 BC as their reference.
More recently is the radiocarbon date of 1950 AD or before present, BP.
Dating methods is the area that attempts to establish a chronological sequence through various methods including relative comparisons, scientific analysis and level of accuracy.
This paper will introduce absolute dating based on the scientific research methodology of Korean archaeology, including its principle, history and achievements.