Potassium dating method
Quite convincing dates are sometimes arrived at by importing parallels from other contemporaneous cultures.This parallelism is formed due to trade relations, particularly wehen trade followed in both directions.Even when the absolute dates are available, we have to supplement the information with relative dating.The various methods of relative dating are; This method depends on the common observation that the height of the habitational area increases as the people continue to live at the same place.
But, even when the scientific methods of absolute dating are available, this method of dating has not lost its importance, as many a time we have to depend solely on relative dating.
Whenever and where ever such antiquities are found, associated finds are automatically dated.
For example Mauryan terracottas, Roman amphorae, Harappan pottery, NBP , PGW,etc.
In such cases subjective element cannot be ruled out.
But, for a single culture site the method is quite reliable.