Dear Asem Salama,

The best method to date monument is looking at some organic matter such as horn, wood, coal, hair, spore, pollen, etc.Then you can use C-14 isotope which is widely used to date archaeological sites.

Regards,

Rzger

To date monuments you should look for the tools or any other organic remains such seeds or coal ...etc. May you use the C-14 for ti date the event when this monument done.

Many thanks

I'm not an expert in this field; however, I remember a course in glacial geology where the terminal moraines were dated by looking at the growth of lichens on the rock surfaces. The same species of lichen were identified in a near by cemetery which gave a minimum age based on the tomb stones dates. If I remember correctly, the diameter of the lichen was measured in the cemetery and was then compared to the lichens in the field. Hope this helps out.

Thank you Hermann Rivas, Rzger A. Abdula, Abdalla M. B. Abu Hamad, Arthur Smith for your answer. it was helpful for me to understand the concept