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Based on a discipline of geology called stratigraphy, rock layers are used to decipher the sequence of historical geological events.
It is also important not to forget that throughout the history of humankind any discovery that shakes the status quo is always under attack until it becomes established, and we are in an era where many of the things that we once considered certain will become errors of our past.
By John Black Dr John (Ioannis) Syrigos initially began writing on Ancient Origins under the pen name John Black.
This method is based on the fact that when a material is heated or exposed to sunlight, electrons are released and some of them are trapped inside the item.
Once you heat this item again using high temperatures, the trapped electrons become excited and recombine with the item’s material.
Though still heavily used, relative dating is now augmented by several modern dating techniques.
Radiocarbon dating involves determining the age of an ancient fossil or specimen by measuring its carbon-14 content.Until this century, relative dating was the only technique for identifying the age of a truly ancient object.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.Carbon-14, or radiocarbon, is a naturally occurring radioactive isotope that forms when cosmic rays in the upper atmosphere strike nitrogen molecules, which then oxidize to become carbon dioxide.Green plants absorb the carbon dioxide, so the population of carbon-14 molecules is continually replenished until the plant dies.One of the most important dating tools used in archaeology may sometimes give misleading data, new study shows - and it could change whole historical timelines as a result.Tags: Adult Dating, affair dating, sex dating