# True/False Igneous Rock Formation Question

1. Feb 12, 2015

### RJLiberator

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. Feb 12, 2015

### Bystander

Google "flood basalts," Hawaii, Siberian Traps, Deccan Traps.

3. Feb 12, 2015

### 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.

4. Feb 12, 2015

### RJLiberator

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. Feb 12, 2015

### Bystander

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.