[CIG-LONG] FW: Convergence issues with long-term extension models

[Tim Rawling]

Thanks Walter

I think I can get by with the rotated box.  Ill see how I go.

Thanks for the suggestion.

Cheers
Tim

On Mon, 15 Mar 2010 15:56:45 -0700 (PDT)
Walter Landry <walter at geodynamics.org> wrote:

> Tim Rawling <tim at modeltheearth.com> wrote:
> > Hi cig-long group
> > 
> > sorry for the email I sent earlier, I meant for it to go just to
> > Gilly but I am happy for any suggestions from the group.  I am new
> > to using Gale but have been working with Gilly on some problems
> > related to collision and closure of asymmetric basins constrained
> > by some deep reflection seismic we acquired recently.  I am now
> > extending the work Gilly did a little by looking at how the
> > variation in rheology of that accreted basement may have effected
> > the geometry of a subsequent extensional event.  
> > 
> > I am currently trying to set up a model that has a pre-existing
> > weakness that cuts diagonally across the model volume (a relay
> > fault if you like).  The shape would intersect the model front and
> > right boundaries but not the back or left boundaries. Is it
> > possible to create a shape like this in 3D using PolygonShape or is
> > there are better way to do it that anyone can suggest?
> 
> How complicated is the shape of the weakness? If the weakness runs in
> a straight line, you can use a box and rotate it.  Otherwise, you
> could create an arbitrary shape by using lots of tiny boxes.
> 
> Cheers,
> Walter Landry
> walter at geodynamics.org
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