Rubidium strontium dating example

Then, by assessing the isotope concentrations of rubidium and strontium, scientists can back-calculate to determine when the rock was formed.

The radiogenic daughter, 87Sr, is produced in this decay process and was produced in rounds of stellar nucleosynthesis predating the creation of the Solar System. concept behind rubidium—strontium dating is that the original rock has some initial amount of 87Rb, some initial ratio of 87Sr/868r and some initial ratio of 87Rb/ge' Sr.This function is able to tell researchers how old a sample is. But there’s a wrinkle in the process that has been overlooked.The ratios of strontium-86 to rubidium and strontium-87 are thought to only be influenced by the radioactive decay of the rubidium-87 into strontium-87.An oversight in a radioisotope dating technique used to date everything from meteorites to geologic samples means that scientists have likely overestimated the age of many samples, according to new research from North Carolina State University.To conduct radioisotope dating, scientists evaluate the concentration of isotopes in a material.

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