Dipping Cordillera Models

plate_smash.png
particle0000.png
plate_smash.png
particle0000.png

Dipping Cordillera Models

0.00

The goal of the models in this section is to

  1. Produce delamination with uplift similar to the magnitude and timing observed in the Cordillera.
  2. Retain some fragment in the upper mantle after delamination to be compared to the tomography

As a starting point I ran a simplified forward model of a normal thickness plate colliding with a wedge shaped craton by means of an imposed surface velocity. This model was computationally time intensive and prone to non convergence. 

This starting model gave me a geometry to start new models (so as to avoid the above problem in the testing phase) in the absence of imposed plate velocity and in order to test the parameter space needed to achieve goal 1&2.

This starting model implies that if a normal lithosphere was driven into a wedge shaped craton you would thicken the upper crust, lower crust and lithosphere similar to a  dipping cordillera into a wedge shaped craton.

The intent of this modeling is to test in low resolution for the behaviour I prefer, test at high resolution to reproduce the results I want and then move to fully evolving models, plate smash, crust thickening and delamination occuring.

In these models posted in this section, I have experimented with heating from below and imposing plate velocities in low resolution models but on reflection it is probably better to run models without too many parameters before the key rheologic and density parameters are found to produce the desired result. Sensitivity testing can be run later.

Note, resolution is important in delamination as small scale convection along the lower crustal boundary drives the delamination (propagation). So the results at high resolution will still need to be iterated upon for best fit and will not be replicas of low res.

Testing suduction scenario:

density

particle

 

OK now testing dimensional verison of this code

 

Add To Cart

Excel summary sheet

PS_AL_1 Movies

PS_AL_2 Movies

PS_AL_3 Movies

PS_AL_4 Movies

PS_AL_5 Movies

PS_AL_6 Movies

PS_AL_7 Movies

PS_AL_8 Movies

PS_AL_9 Movies

PS_AL_10 Movies

PS_AL_11 Movies

PS_AL_12 Movies

PS_AL_14 Movies

PS_AL_15 Movies

PS_AL_16 Movies

PS_AL_17 Movies

PS_AL_18 Movies

PS_AL_19 Movies

PS_AL_20 Movies

PS_AL_21 Movies

PS_AL_22 Movies

PS_AL_23 Movies

PS_AL_24 Movies

PS_AL_25 Movies

PS_AL_26 Movies

PS_AL_27 Movies

PS_AL_28 Movies

PS_AL_29 Movies

PS_AL_30 Movies

PS_AL_31 Movies