Why does excess gravitational potential cause mountain belts to be unstable?

Watch
NimbleNeil
Badges: 10
Rep:
?
#1
Report Thread starter 2 years ago
#1
Doing the Wilson Cycle theory, one of the reasons listed in the slide is in the title of the thread, I don't get why this causes mountain belts to become sites of future rifting.
0
reply
Plagioclase
Badges: 21
Rep:
?
#2
Report 2 years ago
#2
(Original post by NimbleNeil)
Doing the Wilson Cycle theory, one of the reasons listed in the slide is in the title of the thread, I don't get why this causes mountain belts to become sites of future rifting.
Not entirely sure but qualitatively, if you've got a gravitationally unstable mountain belt, it is (1) going to flow laterally away from peaks in gravitational potential over time and (2) the thickened continental crust might also cause the mantle material below to flow laterally. This is the basic kind of motion you'd expect in a rifting zone (mantle flowing up to the ridge axis and then flowing away, and the crust above moving with it) so perhaps that sets up mantle flow that results in rifting?
0
reply
X

Quick Reply

Attached files
Write a reply...
Reply
new posts
Back
to top
Latest
My Feed

See more of what you like on
The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

Personalise

With HE fairs postponed, would a virtual HE fair be useful?

Yes (80)
61.54%
No (50)
38.46%

Watched Threads

View All