Earths core and mantle producing plate tectonics?

  • Thread starter KTevolved
  • Start date
  • #1
16
0

Main Question or Discussion Point

If Earths core were larger taking up say 70% of its radius and the mantle were smaller. Would there be more or less plate tectonics?
 

Answers and Replies

  • #2
4,464
64
Is that an interesting question? Science is about using the scientific method, in short, observe - analyse - hypothesis - predict - find evidence to refute prediction.

So questions about hypothetical -but untrue- situations are outside the scientific method. Anyway, plate tectonics is thought to believe the result of mantle convection, which in turn is the effect of heat produced in the Earth core by some mechanism. So hypothetically, if there was more heat generated in the earth core, you might expect stronger mantle convection and more plate tectonics.

But it remains highly speculative.
 
  • #3
16
0
Thats what i was thinking but i wanted to be sure because with a larger core you get more eat and heat loss would slow down. I was mainly confused about what a thinner mantle would do for the movement of the plates. but thx.
 
  • #4
4,464
64
Again, the question is, the heat source, surely there must be some to a lot of radiogenic heat but some heat is also generated due to friction between the core and mantle due to irregulaties in spinning, see for instance this and this.

So if the size of the core was different, what effect would that have on the various heat sources? I don't know.
 

Related Threads for: Earths core and mantle producing plate tectonics?

  • Last Post
2
Replies
33
Views
16K
  • Last Post
Replies
11
Views
8K
  • Last Post
Replies
6
Views
4K
Replies
4
Views
2K
  • Last Post
Replies
1
Views
2K
Replies
6
Views
2K
  • Last Post
Replies
1
Views
2K
  • Last Post
Replies
5
Views
2K
Top