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Thus today’s measured radioisotope compositions of these O and E chondrites may reflect a geochemical signature of that “primordial material,” which included atoms of all elemental isotopes.
Keywords: meteorites, classification, ordinary (O) chondrites, H chondrites, L and LL chondrites, enstatite (E) chondrites, radioisotope dating, Allegan, Forest Vale, Guarena, Richardton, St. Furthermore, many meteorites appear to have consistently dated around the same “age” (Dalrymple 1991, 2004), bolstering the evolutionary community’s confidence that they have successfully dated the age of the earth and the solar system at around 4.57 Ga.
Marguerite, Barwell, Bjurbole, Bruderheim, Olivenza, St. It has also strengthened their case for the supposed reliability of the increasingly sophisticated radioisotope dating methods.
Some of the links below will take you to the Talk Origins website response.
As OEM responses are written, these will be replaced. These rebuttals are shortened versions of many of our full length articles.
Furthermore, he only focused on the U-Th-Pb model ages published in that paper, apparently ignoring the excellent Pb-Pb isochron age of 4.553 ± 0.004 Ga based on some twenty isotopic analyses of the matrix, magnetic separates, aggregates and chondrules reported in that same paper, as well as the U-Pb concordia isochron age of 4.548 ± 0.025 Ga based on those same samples.