Relative dating of geological strata

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In 1788 John Playfair came to see Hutton’s Unconformity in Inchbonny.The unconformity consists of many vertical tilted layers of grey shale overlaid by many layers of horizontal red sandstone.The Geological column is then used to support the theory of descent with modification on which it is based. Stratigraphy is a branch of geology that studies rock strata with an emphasis on distribution, deposition, age and evidence of past life.

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The fossils in the strata are used to determine relative dates, the simpler the fossil the older the fossil.Time factors of millions and billions of years is difficult even for adults to comprehend.However, "relative" dating or time can be an easy concept for students to learn.131) and by Georges Cuvier (1769-1832), a French anatomist, and Alexandre Brongniart (1770-1847), a French naturalist and geologist, during their work on the deposits of the Paris Basin.Brongniart was the first to use fossils to date rock strata., which states that geologic events are caused by natural processes, many of which are operating in our own time.

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