In Visible Geology you can create block diagrams for illustrating bedding, faulting, folding and intrusions (dykes).You can keep this blocks as a simple cube, or what is really nice, is that you can modify the topography. You can model top surface of the cube with a couple of easy options, drawing contour lines or selecting predefined patterns (like valleys, slopes, mountain tops, etc.).
But it doesn't end there. Once you are happy with your model, you can even do cross-sections!
So, easy to use, quick (very quick), very nice results... I am just looking forward having the chance of using it for some report!
But surely the best thing is to start watching one of the available tutorials in video:
Visible Geology is in a beta status at the moment. I would suggest the following features for future versions:
- Capability for choosing bed thickness.
- Variable scale.
- Folding would improve several orders of magnitude if it would be possible to change basic parameters such as amplitude, wavelength, etc.
It is really a great program, and I am sure it will be soon widely used in education. Go to use it, go!