Carbon dating dino bones
Nonetheless, dinosaur bone apatite had been successfully RC dated in the late 1980's/early 1990's and significant amounts of C-14 were detected and reported.
1 and 2 is that they show the sequence of excavating a 122 cm long Triceratops femur from discovery, to pedestal, to plaster, to separation. Photos 3a-3c are of Triceratops femur bone during and after sawing; photo 3d is a portion of Glendive MT Dinosaur and Fossil Museum field research station; photomacrograph 3e is of material from bone interior containing bone collagen.It's important to note that the authors concluded: "There was no statistical RC difference between the bones and that of the organic material and dating of mammoth bones is [thus] reliable." S. Examples of other magafauna RC dates include 50 mammoths buried together near Hot Springs, South Dakota, USA. All contain some corrected percent of modern C-14 (PMC'S). C-14 dates for carbon-containing material from the Chesapeake Bay or Chicxalub core samples would be useful for comparison.A date of ~26,000 years BP was obtained for bones that were devoid of collagen. Some examples from many references include: marble, 0.060-0.932 PMC, A. Controversial radiometric dates have been recorded for material from Hawaiian volcanic eruptions in 1800-1801 and the Hawaiian magma there gave dates of 1.41 and 1.60 million years BP according to G. Moreover, natural diamonds thought to be "greatly in excess of 100 million years" gave apparent variable RC dates of "64.9 ± 0.4 ka BP to 80.0 ± 1.1 ka BP.The Hadrosaur location was in a dry wash which flows into Frank Creek, then into Glendive Creek and then into the Yellowstone River just North of Glendive Montana in the NW ¼, NE ¼ of Sec.32, T16N, R56 E, Dawson County, Montana about 13 km south-east of the Triceratops location according to Otis Kline (2). 1 and Fig 2 were taken during excavation for the Triceratops femur.Photos were unavailable for the Hadrosaur femur excavation. 1a -1d (right) shows the sequence of extracting the Triceratops femur.
In Fig.1-d it rests on the pedestal of earth after excavation and before adding the protective coating. 1a to 1d as the Triceratops femur bone was being extracted from about 1 m in depth, which was about 20 m below the top of the Montana Badlands [60 m of strata designated Cretaceous].
It can also be seen from Fig.1a that the femur was located very close to the surface.
Because of its proximity to the surface, the paleontologists had to contend with some roots of living plant material before reaching the bone.
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).
Total organic carbon and/or dinosaur bone bio-apatite was then extracted and pretreated to remove potential contaminants and concordant radiocarbon dates were obtained, all of which were similar to radiocarbon dates for megafauna. Walter Libby's team of collagen from "dense mid-shaft femur bones" of twelve extinct saber tooth tigers, [Smilodon] from the Le Brea Tar Pits of Los Angeles CA.