Development of rubidium-strontium dating

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The rubidium-strontium dating method is a radiometric dating technique used by scientists to determine the age of rocks and minerals from the quantities they contain of specific isotopes of rubidium 87 Rb and strontium 87 Sr, 86 Sr. Development of this process was aided by German chemists Otto Hahn and Fritz Strassmann , who later went on to discover nuclear fission in December The utility of the rubidium — strontium isotope system results from the fact that 87 Rb one of two naturally occurring isotopes of rubidium decays to 87 Sr with a half-life of In addition, Rb is a highly incompatible element that, during partial melting of the mantle, prefers to join the magmatic melt rather than remain in mantle minerals. As a result, Rb is enriched in crustal rocks. The radiogenic daughter, 87 Sr, is produced in this decay process and was produced in rounds of stellar nucleosynthesis predating the formation of the Solar System.
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Radiometric dating

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During the s and s, it became evidentthat the earth was at least millions of years old through a number oflines of observation:. The vast quantity of known sedimentary rocks would have taken enormousamounts of time to form. In fact, there were so many strata in the geologiccolumn although from different localities , the geologic column was morethan km thick. This implies that the earth was partially moltenwhile its final shape was being determined and this means that an enormousamount of time would have been required for the earth to cool from thissemi-molten state to its present temperature. With the development of radiometric dating,it was possible to absolutely date rocks from the earth, the moon, meteorites,etc. This occurs at a regular rate and each radioactive element has what is known as a half-life--the amount of time needed for the transformation or decay of half of the original quantity.
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Rubidium-strontium dating

Following the somewhat serendipitous discovery of radioactivity by Becquerel, many prominent scientists began to investigate this new, intriguing phenomenon. During the beginning of the twentieth century, many radioactive substances were discovered, the properties of radiation were investigated and quantified, and a solid understanding of radiation and nuclear decay was developed. The spontaneous change of an unstable nuclide into another is radioactive decay.
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Research article 22 Oct Correspondence : Hugo K. Olierook hugo.
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