[CIG-LONG] Brittle and Ductile deformation

[Md. Tariqul Islam]

 Hi Walter,
Thanks for your previous help. Now I would like to share some issues with you. One is the brittle deformation. As you mentioned in the user manual that if the crust has both yielding and viscus rheology it should deform half the crust ; but for my case it deformed until Moho and the surface did not subsided enough indicating it could be totally brittle ( attached a strain rate invariant image).
The other issue ( this is different model) is the change of viscosity - the mantle is showing high viscosity though I used low viscosity ( the input file and image for viscosity field is attached).
As I am using non Newtonian viscosity it is very sensitive, can you suggest me how it can be consistent as it is crushing around thirty steps. The other thing is I am using the direct solver, do you think that this is making any difference?

Yours' Sincerely
Tatriq
University of Sydney, Australia
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