Start Role of radioactive elements in dating events and artifacts

Role of radioactive elements in dating events and artifacts

Archaeologists also reexamine data, such as artifact collections, site records, and published reports from previously completed projects.

He calculated the modern rate of salt delivery to the oceans, and suggested that the present salinity of ocean water would take at least 100 million years to develop.

Radioactive dating uses the ratios of isotopes and their specific decay products to determine the ages of rocks, fossils and other substances.

Elements occur naturally in the earth, and they can tell us a lot about our Earth's past.

is a technique used by scientists to learn the ages of biological specimens – for example, wooden archaeological artifacts or ancient human remains – from the distant past.

It can be used on objects as old as about 62,000 years.

In fact, Archbishop Usher of Ireland calculated that the Earth was created at 9 AM on It was believed that prior to the Great Flood, Earths surface was flat and its climate was mild.

Mountains, erosion, and variations in climate were considered to be punishment for the sins committed by humanity.

Occasionally sites are partially or completely excavated to address specific research questions or to salvage information prior to disturbance by a development project.