Relative and absolute age dating


A few days ago, I wrote a post about the basins of the Moon -- a result of a trip down a rabbit hole of book research.

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When you find the same fossils in rocks far away, you know that the sediments those rocks must have been laid down at the same time.Just like a stack of sedimentary rocks, time is recorded in horizontal layers, with the oldest layer on the bottom, superposed by ever-younger layers, until you get to the most recent stuff on the tippy top.On Earth, we have a very powerful method of relative age dating: fossil assemblages.The more fossils you find at a location, the more you can fine-tune the relative age of this layer versus that layer.



Relative and absolute age dating comments


  • Absolute dating - Wikipedia profil de paulette60

    paulette60

    Absolute dating is the process of determining an age on a specified chronology in archaeology and geology. Some scientists prefer the terms chronometric or calendar dating, as use of the word "absolute" implies an unwarranted certainty of accuracy. Absolute dating provides a numerical age or range in contrast with.…
  • Dating Rocks and Fossils Using Geologic Methods Learn Science. profil de paulette60

    paulette60

    Unlike relative dating methods, absolute dating methods provide chronological estimates of the age of certain geological materials associated with fossils, and even direct age measurements of the fossil material itself. To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was.…