Range of potassium argon dating
Since our dating technique is named Potassium-Argon dating Why do we need Potassium-Argon or K-Ar dating while another dating techniques such as C-14 work just fine.
Other dating techniques work fine, but have their limitations.
discovered the β-activity of Potassium atom in 1905.
After this discovery later they found the γ-activity of Potassium atom in 1928 by KOHLHÖRSTER.
Later as a good guess KLEMPERNER and two other independent scientists, NEWMAN and WALKE, in 1935, turned themselves to a rare isotope of K in the Earth’s atmosphere and the difficulty of making a correction for “nonradiogenic” argon, it did not appear likely that this method of age determination would be capable of extensive application.” Earlier, when we were not being introduced with this great discovery, it was considered as a hypothesis that the Earth, our blue planet, changes and reverses it magnetic field by changing the poles, which is given named as geomagnetic reversal The theory being given, in this case, is when an igneous rock acquires the solid state and entire phenomena cool down then “the magnetic minerals in it become cool to their curie point then they become magnetized”.
The magnetization becomes in the direction of the Earth’s magnetic field and although the magnetic field is very week but it is very stable. Raman Malik is one of the co-curator for the archaeological dating exhibition.
In the vast field of archaeology, determining the age of any object is very crucial and difficult.
Since the morphology of a fossil cannot be changed, it is obvious that the dating is the more subjective element of the two items.This technique helped the scientists to solve some unsolved mysteries of human past and helped to put the pieces together and arrange or rearrange them for example; the case study of Zinjanthropus Dalrymple, G. And, we simply can use, archaeological dating as a utensil to find out the answer.Evolution places severe demands upon fossils used to support it.Yet, accurate dating of fossils is so essential that the scientific respectability of evolution is contingent upon fossils having appropriate dates.Popular presentations of human evolution show a rather smooth transition of fossils leading to modern humans.
This coverage gap lies beyond what is considered the effective range for radiocarbon and prior to what is considered the effective range for potassium-argon.