Relative dating unconformities


(Be as specific as you can, such as "between the Jurassic and Tertiary periods," or "Within the Triassic period.") This unconformity is in the Proterozoic Eon.5.



Angular unconformities An angular unconformity consists of tilted or folded sedimentary rocks that are overlain by younger, more flat-lying strata.In Part 2 you will use the principles of relative dating to determine sequences of geological events as indicated by the layers and structures in the rocks.Part 2 ends with an application of the principles of relative dating to the rocks of the Grand Canyon.Thus, carbon-14 is of no use in determining the absolute ages of, for example, dinosaur fossils.

The only materials that start out with usable amounts of carbon-14 in them are carbon-bearing materials which derived their carbon immediately from the atmosphere or from shallow water.

PART 1: DETERMINING ABSOLUTE GEOLOGIC AGES Go to the Virtual Dating Web page and earn your Virtual Radiochronologist Certificate by completing the exercise entitled Virtual Dating Isochron for rocks and minerals.