Results are out! Find what you Get quick advice or join the chat
Hey! Sign in to get help with your study questionsNew here? Join for free to post

Biological Origin of: Coal, Oil and Limestone?

Announcements Posted on
Let our uni choice search tool match you with your perfect university 19-11-2015
  1. Offline


    Title is pretty self explanatory, but what are the biological origins of coal, oil and limestone?


    what geological reservoirs (sinks) can act as a source of carbon?
  2. Offline

    Both coal and oil are formed from organic matter (dead plant and animal material). The organic matter is buried under layers of sediment and put under intense heat and pressure. This prevents it from decomposing properly due to the lack of oxygen. After millions of years, carbon-rich deposits are formed, which we use as fossil fuels. To distinguish between the two, I think coal is formed only from plant matter (mainly trees) while oil may be a mixture of both animal and plant material.

    Limestone is a sedimentary rock, which means it's formed from layers of sediment being consolidated under great pressure for millions of years. Sometimes, the shells of marine organisms become part of this sedimentation process. These shells are largely responsible for the presence of calcite (calcium carbonate) in limestone.

    I'm not sure whether I've danced around your questions a bit there, but hopefully that's of some use. Can't answer the last one though, sorry.
  3. Offline

    i'm not 100% sure but i think some "sinks" are coal, limestone, oil/gas, and plant and animal tissues.

    but like i said; i'm not positive so if that sounds really off then it most likely is.


Submit reply


Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. By joining you agree to our Ts and Cs, privacy policy and site rules

  2. Slide to join now Processing…

Updated: September 30, 2009
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Today on TSR

Find your perfect uni

Let us match you to your ideal course

What class are you?
Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.