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These include radiometric dating of volcanic layers above or below the fossils or by comparisons to similar rocks and fossils of known ages.Knowing when a dinosaur or other animal lived is important because it helps us place them on the evolutionary family tree.
Sedimentary rocks are rarely useful for dating because they are made up of bits of older rocks.
For those of you who are familiar with PRI manual techniques presented in our Postural Respiration™ and Cervical-Cranio-Mandibular Restoration™ courses, you will be happy to hear that we have filmed the manual techniques for a DVD.
The date for filming was on May 30th and the finished project is expected by early summer.
Uranium is present in many different rocks and minerals, usually in the form of uranium-238.
This form of uranium usually decays into a stable lead isotope but the uranium atoms can also split – a process known as fission.
Students have the best chance for building technique and musicality by working on short selections in a variety of different musical styles.