{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Earth_Science_Concepts_Compatibility_Mode_

Earth_Science_Concepts_Compatibility_Mode_ - Earth Science...

Info icon This preview shows pages 1–8. Sign up to view the full content.

View Full Document Right Arrow Icon
Earth Science Concepts
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Geologic Time Scale •Two ways to measure geologic time –Relative Dating –Radiometric •The Earth is considered to be 4.6 billion years old
Image of page 2
Geologic Time Scale •Two ways to measure geologic time –Relative Dating •Tells sequence (relative age) - not exact age •Layers of rock called strata •The lower the layer, the older the rock - superposition •Strata in different regions are matched - correlation
Image of page 3

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Geologic Time Scale •Two ways to measure geologic time –Radiometric •“exact” age determined by radioactive decay rates •Uranium-238 decays to lead-206 in 4.5 billion years •Uranium-235 decays to lead-207 in 713 million years •Radiocarbon dating uses carbon-14
Image of page 4
Geologic Time Periods •Time periods divided into: –Eons(largest span), eras, periods, ephochs, millions of years –Assembled before radiometric dating techniques –Ex. - Phanerozoic, Mesozoic, Jurassic, Pliocene
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
x
Image of page 6
Earth’s Structure Geology is the study of dynamic processes occurring on the Earth’s surface and its interior.
Image of page 7

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 8
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern