Grand canyon relative dating exercise Free online dating and sex games

You can use principles of relative geologic age to determine sequences of geologic events, including rock formations, intervals of erosion, tilting, folding, and faulting like those represented in the block diagrams and cross-sections below.

For more information on these systems, see the isotopes and half-lives section of the Geologic Time Basics page.You can click on each of the images in Part 2 for a larger version in a separate browser window.The figure above is a block diagram represents three horizontal geologic strata (layered formations of rock).The mathematical formula can be used to determine exactly how much time has elapsed, for any fraction of parent/daughter isotope, without having to make a visual estimate from a graph.The mathematical formula is expressed as follows: where age is the absolute age (typically using years as the time unit), ln is the natural logarithm, D is the amount of daughter isotope, and P is the amount of parent isotope.

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