Radioactive dating in massachusetts

Snelling (2014a, b, c, 2015a) then sought to discuss the possible significance of this clustering in terms of various potential creationist models for the history of radioisotopes and their decay. “Rb-Sr Chronology of Volatile Depletion in Differentiated Protoplanets: BABI, ADOR and ALL Revisited.” Earth and Planetary Science Letters 374: 204–14. He favored the idea that asteroids and the meteorites derived from them represent residual “primordial material” from the formation of the solar system, which is compatible with the Hebrew text of Genesis that could suggest God made “primordial material” on Day One of the Creation Week, from which He made the non-earth portion of the solar system on Day Four. Keywords: meteorites, classification, groups of asteroidal meteorites, chondrites, stony achondrites, pallasites, mesosiderites, irons, Rb-Sr, Lu-Hf, Re-Os, Pb-Pb, U-Pb, Sm-Nd, Mn-Cr, Hf-W, isochron ages, agreement of isochron ages, scattering of isochron ages, accelerated radioisotope decay, thermal disturbance, resetting, cosmic-ray exposure ages, fission tracks, “primordial material,” geochemical signature, inheritance, mixing, Day Three Great Upheaval, the Flood. In 1956 Claire Patterson at the California Institute of Technology in Pasadena reported a Pb-Pb isochron age of 4.55 ± 0.07 Ga for three stony and two iron meteorites, which since then has been declared the age of the earth (Patterson 1956). “The Oldest Zircons in the Solar System.” Earth and Planetary Science Letters 109 (1–2): 1–10. Snelling (2014c) subsequently compiled all the radioisotope ages for 12 eucrite (basaltic) achondrites. The data for many of these meteorites again strongly clustered at 4.55–4.57 Ga, dominated by Pb-Pb and U-Pb isochron and model ages but confirmed by Rb-Sr, Lu-Hf, and Sm-Nd isochron ages. Snelling (2014b) grouped together all the radioisotope ages obtained for ten ordinary (H, L, and LL) and five enstatite (E) chondrites and similarly displayed the data. “Rhenium-Osmium Isotope Constraints on the Age of Iron Meteorites.” Science 255 (5048): 1118–21. They generally clustered, strongly in the Richardton (H5), St.

And again, no pattern was found in these meteorites’ isochron ages indicative of past accelerated radioisotope decay having occurred in these achondrites, and therefore on their claimed parent asteroids.

Otherwise, due to their 4.55–4.57 Ga “ages” these meteorites and their parent asteroids are regarded as originally representing “primordial material” that God made on Day One of the Creation Week, from which He made the non-earth portion of the solar system on Day Four, which is compatible with the Hebrew text of Genesis.

Thus today’s measured radioisotope compositions of these meteorites could reflect a geochemical signature of that “primordial material,” which included atoms of all elemental isotopes. “Sm-Nd Isotopic Evolution of Chondrites.” Earth and Planetary Science Letters 50 (1): 139–55.

There was also scatter of the U-Pb, Pb-Pb, Th-Pb, Rb-Sr, K-Ar, and Ar-Ar model ages, in most cases likely due to thermal disturbances resulting from metamorphism or impact cratering of the parent asteroid, identified as 4-Vesta. “U Systematics in Terrestrial Uranium-Bearing Minerals.” Science 335 (6076): 1610–14.

Again, no pattern was found in these meteorites’ isochron ages similar to the systematic patterns of isochron ages found in Precambrian rock units during the RATE project, so there is no evidence of past accelerated radioisotope decay having occurred in these eucrites, and therefore on their claimed parent asteroid.

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2010) determined Pb-Pb isochron ages at 4.553 ± 0.004 Ga and 4.56718 ± 0.0002 Ga respectively being essentially the same.

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