Im 16 and writing a project for school about glacial rebound and isostacy. I was wondering if anyone could explain to me how the viscosity of the upper and lower mantle effect the rates of uplift of the crust after an ice sheet has melted.
I thought that if the viscosity of the mantle is low then rebound should be faster than if the mantle had a higher viscosity, but i've read that sometimes this is not the case. I dont understand why.How do rates of uplift change over time? Please help. :?