Thank you for choosing GTECTON. 
The code is source-controlled with GIT. 
Major version number is 2023.7

The code was initially developed under the name TECTON by Jay Melosh and Arthur Raefsky. 
GTECTON was developed from TECTON version 1.4 (release 1989). 
More on the early history of GTECTON can be found in file HISTORY.

GTECTON is a research code that has been under continual development. 
The research publications below document some of the more outstanding developments. 
I hope that the code is of some use to you for your research. 
Should scientific publications result from your work with GTECTON, 
I ask that you cite relevant papers from the list below so that I get some credit for the work.

The source code consists of the finite element codes themselves (src/04_simulating subdirectory), 
source codes for post-processing (src/06_postprocessing), 
i.e., turning the FE output into files for plotting with GMT, 
and other stuff like mesh generation.

To compile and install the codes, 
start with the INSTALL file in the gtecton subdirectory (after unpacking the tarball).

Currently the code is developed and maintained by 
Rob Govers (r.govers@uu.nl) and Lukas van de Wiel (l.y.vandewiel@uu.nl). 


REFERENCES

Melosh, H. J., and A. Raefsky, The dynamical origin of subduction zone topography,Geophys. J. R. Astr. Soc., 60, 333-354, 1980. First publication with the predecessor of GTECTON (TECTON).

Melosh, H. J., and A. Raefsky, A simple and efficient method for introducing faults into finite element computations, Bull. Seismol. Soc. Am. 71(5), 1391-1400, 1981. First publication about split (faulted) nodes in TECTON.

Melosh, H.J., and C.A. Williams, Mechanics of graben formation in crustal rocks: a finite element analysis, J. Geophys. Res., 94, 13,961-13,973, 1989. First publication about slippery nodes in TECTON.

Govers, R., Wortel, M.J.R., 1993. Initiation of asymmetric extension in continental lithosphere. Tectonophysics 223, 75–96. First publication with the thermo-mechanical GTECTON code, including temperature dependent viscosities, traction boundary conditions, residual force update, and Von Mises plasticity.

Govers, R.M.A., Dynamics of lithospheric extension: A modeling study, PhD Thesis, Geologica Ultraiectina, 105, 240 pp., 1993. First publication with the consequences of surface processes on lithosphere dynamics.

Hall Wallace, M., and H.J. Melosh, Buckling of a pervasively faulted lithosphere, Pageoph., 142(2), 1994. Description of handling of geometric non-linearity.

Govers, R., Meijer, P., 2001. On the dynamics of the Juan de Fuca plate. Earth and Planetary Science Letters 189, 115-131. First publication with the spherical plane stress GTECTON code.

Govers, R., Wortel, M., 1995. Extension of stable continental lithosphere and the initiation of lithospheric scale faults. Tectonics 14, 1041-1055. First publication with strain weakening and large deformation update in the GTECTON code.

Govers, R., Wortel, M., 1999. Some remarks on the relation between vertical motions of the lithosphere during extension and the necking depth parameter inferred from kinematic modeling studies. Journal of Geophysical Research 104, 23,245-23,253. First publication with Winkler pressure boundary conditions

Buiter, S., Govers, R., Wortel, M., 2002. Two-dimensional simulations of surface deformation caused by slab detachment. Tectonophysics 354, 195-210. First publication with self-orienting slippery fault displacements.

Govers, R., Wortel, M., 2005. Lithosphere tearing at STEP faults: response to edges of subduction zones. Earth and Planetary Science Letters 236, 505-523. First publication with 3D version and sparse solver implementation of GTECTON.

Schmalzle, G., Dixon, T., Malservisi, R., Govers, R., 2006. Strain accumulation across the Carrizo segment of the San Andreas Fault, California: Impact of laterally varying crustal properties. Journal of Geophysical Research 111. First publication with out-of-plane version of GTECTON.

De Franco, R., Govers, R., Wortel, R., 2007. Numerical comparison of different convergent plate contacts: subduction channel and subduction fault. Geophysical Journal International 171, 435-450. First publication with solution of steady state solution to diffusion-advection equation in GTECTON.

De Franco, R., Dynamics of subduction and continental collision: influence of the nature of the plate contact, Ph.D. thesis Utrecht University, Geologica Ultraiectina, 284, 129 pp., 2008. First publication with remeshing procedure.

Plattner, C., Malservisi, R., Govers, R., 2009. On the plate boundary forces that drive and resist Baja California motion. Geology 37, 359-362. First publication on handling fault intersections and triple junctions in GTECTON.

Baes M, Govers R, Wortel R. Subduction initiation along the inherited weakness zone at the edge of a slab: Insights from numerical models. Geophysical Journal International. 2011;184(3):991-1008. doi:10.1111/j.1365-246X.2010.04896.x. First paper with updated and expanded plasticity formulation and plastic strain softening. 

George OA, Malservisi R, Govers R, Connor CB, Connor LJ. Is uplift of volcano clusters in the Tohoku Volcanic Arc, Japan, driven by magma accumulation in hot zones? A geodynamic modeling study. Journal of Geophysical Research. 2016;121:4780-4796. doi:10.112/2016JB012833. First paper with the axisymmetric implementation of GTECTON.