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Stereonet3D (previously OSXStereonet) plots lines and planes in spherical, equal angle or equal area, projections. The program can produce various types of plots such as scatter plots, great or small circles, arc segments, contours, rose diagrams, stereonets from any view direction, latitude-longitu ...
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Structural geology deals to a great extent with the operation of vectors and tensors. GeoKalk (previously GeoCalc) is a calculator for vectors (lines and planes), and tensors (strain and stress). GeoKalk is a document based application. Multiple calculators can be opened and saved as independent doc ...
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SSPX is a full fledged inverse modelling program to calculate best fitting strain tensors given displacement or velocity vectors in two or three dimensions. SSPX works equally well on small deformation problems such as computing strain rates from GPS data, or large deformation problems such as compu ...
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Trishear3D is a program to run 3D, forward trishear models. The program is based on algorithms by Cristallini and Allmendinger (2001), and Cristallini et al. (2004). Trishear3D can model the geometry and finite strain of fault propagation folds, fault bend folds, and lateral propagating faults. More ...
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The subsidence of a sedimentary basin is due to: tectonic subsidence, water and sediment loading, and sediment compaction. These three components can be estimated from a stratigraphic section using "backstripping" (Allen and Allen, 1990). This removes from each sedimentary layer the effects of sedim ...
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The displacement profile of the surface of the earth under crustal loads (e.g. mountain chains) can be well reproduced by an elastic flexural model. In this model, the uppermost layer of the earth responds to crustal loads as an elastic beam floating in a weaker, fluid-like foundation (i.e. the aste ...
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Archive of thin-plate and thin-shell finite element programs written by Peter Bird at the University of California in Los Angeles (UCLA).

Simple program that illustrates the enormity of the Geological Time. Allows the user to enter a date before present (using different units of time) and the program calculates the corresponding date and time using the calendar year as a scale representing the age of the Earth. Available only in Spani ...
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This package contains an Excel spreadsheet v. 5.0 designed for capturing and manipulating data orientation, whether data field or laboratory (universal plate, etc.). The spreadsheet has been described in formal publications and the detailed descriptions are in Annexes text files.

Program for easier viewing of planes susceptible to be reactivated under a user tax efforts weakness. Reactive is based on the Navier-Coulomb criteria for fracture and slip and provides a graphic display of the orientations of recovery plans interactively given a set of user-modifiable physical para ...
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