Absolute dating of fossils definition Aunty with online chat without registration
Darwin and his contemporaries could never have imagined the improvements in resolution of stratigraphy that have come since 1859, nor guessed what fossils were to be found in the southern continents, nor predicted the huge increase in the number of amateur and professional paleontologists worldwide.
Imagine braving the desert heat for days or even weeks as you dig for dinosaur bones.
Most scientists and many Christians believe that the radiometric dating methods prove that the earth is 4.5 billion years old.
Some critics, particularly religious fundamentalists, argue that neither fossils nor dating can be trusted, and that their interpretations are better.
Other critics, perhaps more familiar with the data, question certain aspects of the quality of the fossil record and of its dating.
So in order to date most older fossils, scientists look for layers of igneous rock or volcanic ash above and below the fossil.
Scientists date igneous rock using elements that are slow to decay, such as uranium and potassium.
As discussed before, the assumptions influence the interpretation of the data.