dating rubidiumstrontium method the radioactive decay of rubidium87 87rb to strontium87 87sr was the first widely used dating system that utilized the isochron method rubidium is a relatively abundant trace element in earths crust and can be found in many common rockforming minerals in which it substitutes for the major element potassium.
potassium is a chemical element with symbol k from neolatin kalium and atomic number 19 it was first isolated from potash the ashes of plants from which its name derivesin the periodic table potassium is one of the alkali metalsall of the alkali metals have a single valence electron in the outer electron shell which is easily removed to.
potassium is one of the alkali metals the alkali metals are the elements that make up group 1 ia of the periodic table the periodic table is a chart that shows how chemical elements are related to one another.
the isochron method many radioactive dating methods are based on minute additions of daughter products to a rock or mineral in which a considerable amount of daughtertype isotopes already exists.
Table 1 principal parent and daughter isotopes used in radiometric dating parent isotope end product daughter isotope halflife years potassium40 40 kargon40 40 ar125 215 10 9 rubidium87 87 rbstrontium87 87 sr488 215 10 10 carbon14 14 cnitrogen14 14 n573 215 10 3 uranium235 235 olead207 207 pb704 215 10 8.
For many people radiometric dating might be the one scientific technique that most blatantly seems to challenge the bibles record of recent creation for this reason icr research has long focused on the science behind these dating techniques along with scores of other biblebelieving.
the various dating techniques available to archaeologists by michael g lamoureux marchapril 2009 introduction todays archaeologist has a wide variety of natural electromagnetic chemical and radiometric dating methodologies available to her that can be used to accurately date objects that are just a few hundred years old.
argon is a noble gas the noble gases are the six elements in group 18 viiia of the periodic table the periodic table is a chart that shows how the chemical elements are related to each other.
A further example from a lava flow off the coast of hawaii shows similar discrepancies if dated with the carbon14 method the flow appears to be less than 17000 years old but dating with the potassium argon method gives dates of 160000 to 43 million years.