1 / 11

Journal Entry #3 – Fossils and Relative Dating

Journal Entry #3 – Fossils and Relative Dating.

miyoko
Download Presentation

Journal Entry #3 – Fossils and Relative Dating

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Journal Entry #3 – Fossils and Relative Dating Yay! Old rocks that look like dead stuff! Woooooo!!!! The only thing that could possibly be more exciting would be if the people who made The Hunger Games and the people who make Hungry Hungry Hippos (you know…the board game) decided to make a new movie where hungry hippos eat teenagers in front of a cheering crowd. That’ll be awesome! Fossils!!!

  2. Fossil: The remains of an organism preserved in petrified form or as a mold or cast in rock.

  3. Fossil: The remains of an organism preserved in petrified form or as a mold or cast in rock. • How?

  4. Fossil: The remains of an organism preserved in petrified forum or as a mold or cast in rock. • How? • The organism/track/etc. must generally be covered by sediment quickly

  5. Types of fossilization • Permineralization – Empty spaces within an organism are filled with mineral-rich water. The minerals precipitate from the water, eventually occupying the empty space.

  6. Types of fossilization • Casts/Molds – Original remains are completely dissolved, leaving an organism-shaped hole in the rock

  7. Law of Superposition • In an undisturbed horizontal sequence of rocks, the oldest layers will be on the bottom, with successively younger layers of rock on top of these.

  8. Law of Original Horizontality • All layers of sediment are originally deposited horizontally. Sedimentary rocks that are no longer horizontal must have been shifted from their original position.

  9. Index fossil – Fossil that is used to define and identify geologic time periods. • Generally based on organisms that only lived during specific time periods.

More Related