Program GTB was written to perfom calculations of geothermometers and geobarometers and to plot the results as lines of constant equlibrium constant on a P-T diagram. The goal was to make a program that was relatively easy to use that would incorporate all published geothermobarometers.
Input to the program is via a dialog box (keyboard input) or data file (tab delimited format), which can be created using most spread sheets.
An extensive manual describing the options comes with the program in PDF format (Acrobat Reader required).
The program is being updated regularly, so keep posted for new versions.
Download program GTB:
Version February 21, 2001
(requires a Power Macintosh computer and System 8.1 or later)
Program GTB (.hqx) (1 Mb) (bin hex - Stuffit archive)
Version August, 2006 - Compiled to run under OSX v 10.4 (PPC - NOT universal)
GTB OSX program (.zip file)
Version April, 2014 - Compiled to run under OSX v 10.9 (Mavericks)
GTB OSX10.9.2 (Mavericks) program (.zip file)
Matthew J. Kohn
Department of Geosciences
Boise State University
1910 University Dr.; MS1535
Boise, ID 83725-1535
Frank S. Spear
Department of Earth and Environmental Sciences
Rensselaer Polytechnic Institute
Troy, New York 12180