The extreme temperatures of the magma would just destroy the bones. Today direct isotopic dating for sedimentary rocks is possible. By measuring the radioactivity of plant samples freshly formed, 1 0 is obtained, remembering that the rate of synthesis of 14 C is constant. So that it may be preserved in different sedimentary rocks. Radioactive decay is a spontaneous process and it occurs at a definite rate characteristic of the source. Scientists have also made improvements to the standard radiometric measurements. You can learn more about fossils, dinosaurs, radiometric dating and related topics by reading through the links below.
Types of Radioactive Decay With Diagram.
One of these is glauconite, a silicate minerals that contains potassium. So to determine the age of sedimentary rock layers, researchers first have to find neighboring layers of Earth that include igneous rock, such as volcanic ash. Dinosaur bones, on the other hand, are millions of years old -- some fossils are billions of years old. An age limit of about 50, years applies to this technique because of the short half-life of 14 C. The method is based on the fact that C 14 atoms are continuously produced in the atmosphere as a result of neutron nproton p reaction induced by slow neutrons of the cosmic ray on the atmospheric nitrogen cycle N From the atmosphere which is its birth place, C is distributed globally through the carbon cycle. Today direct isotopic dating for sedimentary rocks is possible.