The Brain Poke
The Goods
Overview of intrusions from the geologic record
As a geologist, it is quite hard to get information on molten magma chambers- so we look at old magma chambers instead. Let's see what Ben has to say about this, and what this means for magma bodies beneath Krafla!
The Knowledge Tester
Which of the following statements best describes shallow intrusions at Krafla from borehole geology?
Nice! Check this out:
Oh Snap! Have a look at this diagram, it might help:
Which measurements best describe the dimensions of the shallow intrusions at Krafla?
Width (x axis, not thickness):
Length (y axis):
Thickness (z axis):
Nice!
Oh Snap! Re-watch Ben's video and look at the feedback from the previous question.
What intrusive features are likely to have been at Krafla in the past (more than one possible answer)?
Nice!
Oh Snap! Krafla has had a varied history of different sizes of rhyolitic and basaltic eruptions, andesite only forms through mixing so it is unlikely to exist in large magma bodies.
The Brain Poke