C14 dating wikipedia

Six fragments from a single diamond exhibited essentially identical C-14 values – 69.3 ± 0.5 ka – 70.6 ± 0.5 ka BP as reported by Taylor and Southon.

Materials and Methods Geology of the Montana Badlands: Most of the strata are the brownish-grey sediments of the Hell Creek formation thought to date back 65 million years (when the Rocky Mountains were rising in the West and there was much volcanic activity).

Perhaps the most informative documentation of Figs.

Samples from different interior locations were easily removed by hand with a with a stainless steel scoop-type instrument as shown in Fig.3c and placed in plastic bags for further study.The age of the clay was estimated to be between 5000-50,000 years old by J. All were less than 40,000 RC years except for 21; most of the latter 21 were about the same age as for unfossilized wood from drill core samples deep in the permafrost of Prudhoe Bay Alaska: (a) 43,380 ± 380 RC years at 60m depth Vasil'chuk et al. Agenbroad, "The warm spring waters that infiltrated the sinkhole leached out the collagen in the bones." The RC ages for a musk ox carcass frozen in Alaskan, USA, muck gave dates of 24,140 ± 2200 years and 17,210 ± 500 RC years BP respectively for scalp muscle tissue and hair according to R. One case in point came from the study of tektites in Victoria, Australia [Lake Torrens and Lake Eyre regions] called australites. Younger ages for fission tracks were ascribed to partial annealing of fission tracks by reheating on the earth's surface. concluded: "Although RC ages were inconsistent, field work on geology of australite occurrences favored the ‘younger' C-14 age of charcoal believed associated with australites, as well as geologic evidence, indicated age between last glacial and 6000-7000 BP." 50 times younger RC dates suggest that a major asteroid impact occurred in that region only several thousand years ago not 800,000 years BP. RC dating of core drilling specimens from the more famous Chicxalub crater in the Yucatan Peninsula of Mexico should also be RC dated since the explosion of the volcano or asteroid that produced that crater is thought to have caused the supposed demise of the dinosaurs 65 millions years ago.summarized these extensive mammoth RC dating studies but collagen content was not discussed. reported on C-14 dating of small mammoths on Wrangell Island in the Arctic Ocean north of Siberia: The eight mammoth bones, tusks and teeth gave RC ages at 4000 to 5000 RC years BP using purified collagen. Three dacite components from the final lava flow of A. Furthermore, fossil materials other than dinosaur bones and amber that should be free of C-14 but contain significant amounts include anthracite coal, fossil natural gas, fossil wood and marble resulting from the metamorphism of limestone.Geology of the Triceratops and Hadrosaur excavation sites: The Triceratops and Hadrosaur femurs were found in popcorn clay. The color varies from grey to grey-green to green to tan; it is found in distinct thick strata.It contains much volcanic material such as bentonite, or clays such as montmorillonite or vermiculite.

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