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True/False Igneous Rock Formation Question

  • #1
RJLiberator
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Homework Statement


Huge volumes of igneous rock can be erupted and/or intrude in the middle of tectonic plates?
True or False

Homework Equations




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?
 

Answers and Replies

  • #2
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Google "flood basalts," Hawaii, Siberian Traps, Deccan Traps.
 
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  • #3
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Google "flood basalts," Hawaii, Siberian Traps, Deccan Traps.
Columbia River Basalts and the flows around Craters of the Moon in Idaho are a couple of examples on this (N. America) continent.
 
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  • #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.
 
  • #5
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Volumes relative to...?
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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