Author: Rod HolcombeStrain Calculator presents strain data and calculations graphically and numerically. Conversions of strain ratios to stretches at a given volume change can be plotted directly onto a logarithmic strain plot (see screen shot (http://www.holcombe.net.au/software/images/straincalc1.gif) ). Shear zone parameters (ellipticity, deformed and undeformed orientations, etc.) for any shear strain value or vorticity number are calculated and shown graphically (see screen shot (http://www.holcombe.net.au/software/images/straincalc2.gif) ). These tools have been developed principally as a teaching aid, and, in particular, I find the shear zone graphics a very useful way to demonstrate the development of shape fabrics

Author: Rod HolcombeGhoshFlow models graphically the orientation distribution of rigid objects of variable aspect ratio rotated in plane strain general shear flow. It is based on the equations presented by Ghosh and Ramberg (1975) and Ghosh (1993). The model tracks the deformed orientation distributions that would arise from an initial uniform orientation distribution of objects with a uniform distribution of aspect ratios. The basic plots are frequency histograms of the orientation distribution of Long Axes, and plots of the Long Axis orientations versus Aspect Ratio. In addition, a series of plots illustrate the orientation distribution of porphyroblasts that have overgrown a fabric parallel to the shear/flattening plane and in which the old fabric is preserved as an internal foliation, Si. The most useful of these are plots of Long axis orientations plotted against the orientation of the Si foliation. These plots are very sensitive to changes in either shear strain or vorticity number

The 2.5 version of the Windows installer for the Elle microstructure simulation system, associated with the book Microdynamics Simulation. This comes complete with 21 example experiments, and the source code. See http://www.microstructure.info/elle for installation instructions.

The source code associated with the book Microdynamics Simulation

Are you tired of drawing cartoons to illustrate how thrusts move up ramps? Would you like to be able to show the principals of listric normal faulting and the sediment architecture in the rift basin? IS your manager having trouble understanding what you mean by a piggy back basin? Are those funny geometries in your thrust-sheet-top basin sedimentary or structural? What you need is... Strat-o-matic another opensourced Virtual Sandbox application, written by Frank Peel, courtesy of BHP Billiton Petroleum.