What is the Moho Discontinuity made of?
1 Answer
Apr 30, 2016
The Mohorovicic Discontinuity marks a change in the composition of rocks, from basalt in the crust to heavier silicates (peroidotite, dunite) in the mantle.
Explanation:
The precise nature of the Moho is not fully known. But the fact of a composition change is evident from seismic waves traveling faster below the boundary than above it. See here:
https://en.m.wikipedia.org/wiki/Mohorovi%C4%8Di%C4%87_discontinuity
