1. A method for modelling physical geological structures, the method comprising: accepting geological data; generating an initial three-dimensional (3D) transformation between a 3D present day model having points representing present locations of the physical geological structures and a 3D past depositional model having points representing locations where the physical geological structures were computed to be originally deposited; accepting an indication to locally change the 3D transformation for a subset of points in a first model of the models; re-computing the 3D transformation representing the geological structures from the initial 3D transformation to an updated 3D transformation by locally changing the 3D transformation for the subset of points; and displaying a locally altered version of the first model.