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True/False Igneous Rock Formation Question

  1. Feb 12, 2015 #1

    RJLiberator

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    1. The problem statement, all variables and given/known data
    Huge volumes of igneous rock can be erupted and/or intrude in the middle of tectonic plates?
    True or False

    2. Relevant equations


    3. The attempt at a solution

    I am being thrown off by this rather simple problem.
    I understand that at the border of tectonic plates, a lot is happening and I would expect there to be huge volumes of igneous rock formed through volcano activity. However, in the middle of tectonic plates?
    I did a google search and found that there are some earthquakes that occur in the middle of tectonic plates, so I am leaning towards answering 'true.'

    Anyone have any insight here?
     
  2. jcsd
  3. Feb 12, 2015 #2

    Bystander

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    Google "flood basalts," Hawaii, Siberian Traps, Deccan Traps.
     
  4. Feb 12, 2015 #3

    Mark44

    Staff: Mentor

    Columbia River Basalts and the flows around Craters of the Moon in Idaho are a couple of examples on this (N. America) continent.
     
  5. Feb 12, 2015 #4

    RJLiberator

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    So, the answer they were looking for was: True.

    I got this correct due to luck, but it seems like an odd question.

    Volumes relative to...?
    Etc.

    Nonetheless, thank you guys for the comments.
     
  6. Feb 12, 2015 #5

    Bystander

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    Siberian traps are several million cubic kilometers over span of several million years. Compare that to the mid-ocean ridge, ~ 10 cm per year times 3 km crustal thickness times 40,000 km length is 12 cubic kilometers per year.
     
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