A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Scientists found rock deep in the earth and determined it was 3 billion years old. This rock is most likely which type of rock igneous sedimentary metamorphic limestone

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @arek

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @is3535

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @MrNood

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    im stuck between c or d

  5. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @CallMeKiki

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    I wouldn't be. Let's look at two things, how age is determined and how each type of rock is made. Age is determined by isotopic analysis of some chemicals like argon. The thing is though, if the material undergoes great changes, like melting, being crushed, or extremely high temps it can change things with the isotopes. Example, the dating of a bone with carbon isotope analyses vs. the dating of a part of the same bone that has been severely burned would be different. The burned bit would appear younger, the age difference would be relative to the time between the bone and then the burning. So, if part of the bone is burned 300 years later it would appear to be 300 years younger. Rocks: igneous, solidified magma/lava that has not been modified via temp or pressure since its original formation metamorphic rock is igneous rocks that have been under tremendous pressure and/or temp to alter the igneous rock into something different. Example, compress and heat limestone and you have marble. sedimentary rocks are igneous or metamorphic rocks that have been deposited and incorporated into a new rock, but you can still see parts of the original rocks. @geny55

  7. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @mrdoldum

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    c?

  9. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    It is very old. Earth is only 4.7 billion. That means it has been unchanged for 3 billion years. Which of the types of rocks is the most likely to be the oldest with the least changes.

  10. BioEpic
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Hint: it is found deep inside the earth.

  11. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @arek

  12. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.