In , some of the best-known dinosaurs were first discovered by Arthur Lakes, a professor at the Colorado School of Mines in Golden. In , during the construction of West Alameda Parkway, dinosaur tracks were discovered on the east side of Dinosaur Ridge in the million-year-old rocks of the Dakota Group, representing the Early Cretaceous Period. These tracks are those of duck-billed herbivores and ostrich-like carnivorous dinosaurs. Recent research has revealed that these tracks represent only a small part of the extensive track-bearing beds of the Dakota Group, which can be traced from Boulder, Colorado, to northern New Mexico.
5.1: Measuring the Ages of Objects- Radiometric Dating
Radiometric Age Dating - Geology (U.S. National Park Service)
Radiometric dating of rocks and minerals using naturally occurring, long-lived radioactive isotopes is troublesome for young-earth creationists because the techniques have provided overwhelming evidence of the antiquity of the earth and life. Some so-called creation scientists have attempted to show that radiometric dating does not work on theoretical grounds for example, Arndts and Overn ; Gill but such attempts invariably have fatal flaws see Dalrymple ; York and Dalrymple Other creationists have focused on instances in which radiometric dating seems to yield incorrect results. In most instances, these efforts are flawed because the authors have misunderstood or misrepresented the data they attempt to analyze for example, Woodmorappe ; Morris HM ; Morris JD Only rarely does a creationist actually find an incorrect radiometric result Austin ; Rugg and Austin that has not already been revealed and discussed in the scientific literature. The creationist approach of focusing on examples where radiometric dating yields incorrect results is a curious one for two reasons.
How Do Scientists Determine the Ages of Human Ancestors, Fossilized Dinosaurs and Other Organisms?
Several tests were done by the University of Georgia using accelerator mass spectrometry. The age for all these fossils was found to be less than 50, years. Each of the two thousand meeting participants was given a disc which included the abstract of the carbon dating report.
Radiometric dating dinosaurs. Radiometric dating tools M. If the earth? Mummies, lived is and c14 the discoveries of dinosaur fossils or other animal lived million years old?