Dating techniques based on radioactive decay

Among these modern methods are radiometric dating techniques.

Radiometric dating techniques are based on the principle that naturally occurring materials contain variants of particular chemical elements (called isotopes), and some of these variants are unstable and undergo radioactive decay over time as the atoms transform into more stable forms.

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These demonstrate that, of course, we do not know everything (and clearly never will), but we know enough.

Today, innovative techniques provide further confirmation and understanding of the history of life.

New discoveries have filled in the gaps, and shown us in unimaginable detail the shape of the great ‘tree of life’.

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.

All these labors have not led to a single unexpected finding such as a human fossil from the time of the dinosaurs, or a Jurassic dinosaur in the same rocks as Silurian trilobites.

Paleontologists now apply sophisticated mathematical techniques to assess the relative quality of particular fossil successions, as well as the entire fossil record.

Other critics, perhaps more familiar with the data, question certain aspects of the quality of the fossil record and of its dating.

These skeptics do not provide scientific evidence for their views.

Also includes info on how fossils are formed, the “cleaning, preparing, & repairing” of fossils, and other useful resources.

Dating methods continue to evolve and improve over time…

Repeated, and tough, regimes of testing have confirmed the broad accuracy of the fossils and their dating, so we can read the history of life from the rocks with confidence. Educators have permission to reprint articles for classroom use; other users, please contact [email protected] reprint permission. Currently, he is studying certain basal dinosaurs from the Late Triassic and the quality of different segments of the fossil record.