Can carbon 14 used dating lava flows
The solar estimate was based on the idea that the energy supply for the solar radioactive flux is gravitational contraction.
These two independent and agreeing dating methods for of the age of two primary members of the solar system formed a strong case for the correctness of his answer within the scientific community.
The measurement is based on an isotope of potassium that radioactively decays at a known rate into argon.
K-Ar dating has been used to date lava flows above and below archaeological deposits that contain important hominid fossils in Africa's Olduvai Gorge.
This technique can determine ages between a few hundred years to more than 100,000 years.
It has been used at Willandra to date the layers above and below the location of Mungo Lady and Mungo Man , and the layers above and below the footprints horizon.
It uses the fact that natural carbon contains a known ratio of ordinary carbon and the radioactive isotope carbon-14, and that this mix is reflected in carbon taken up by living organic materials such as wood, shells and bones.
To determine the year age (absolute age) of an object, a number of chemical and radioactive techniques can be used.Four main methods have been used in Willandra archaeology.This well known method was the first technique that became available for accurate dating of old materials.Artefacts and other materials can be dated in relative terms by observing which layer of sediments they are found in.This applies the geological principle that under normal circumstances younger layers of sediment will be deposited on top of older layers.