HolcombeCoughlinOliver Valenta Global

Google Earth... |Acrobat Reader...
Rod Holcombe | Tim Coughlin | Nick Oliver
Consulting | 3D modeling | Training | Hydrothermal systems analysis | QA/QC services | Target Generation |
GEOrient | GeoCalculator | GeoMapSymbol | GeoMapVector | Strain Calculator | GeoFryplots | Ghoshflow
Entry-level | Underground & Pit mapping | Basic structure | Alteration mapping | Hydrothermal systems workshops | Thin-skinned structure | Ductile structure | Advanced Structure
Oriented Core material | Structural plotting templates | Hydrothermal systems manuals | Field Training Manual | Database fundamentals manual | animations
subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link
subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link

Structural Geology - Mapping/GIS Software

small logo
stereo-rose diagrams

GeoCalculator© v4.x

is based on the familiar Windows Calculator but takes geological structural data for input and output. Calculations include most common structural geometrical calculations as well as drillhole calculations for oriented, partially oriented, and unoriented core.

- see bugfix history for the most recent changes

Payment GraphicsPurchase...
Note: If you have any concerns about downloading programs from these sites please see the MacAfee site adviser information at: http://www.siteadvisor.com/sites/holcombe.net.au

Download | Installation | Registration | Limitations | Academic use | Disclaimer


The software is specific to Microsoft Windows. (Users have reported that it does not install under Windows emulations on Macs)

GeoCalculator opens initially in its unregistered form, displaying an unregistered notice and inviting registration. The unregistered program contains all the features of full registration except that the number of data that can be batch processed by file Input/Output is strongly restricted. Registration (paid) removes this restriction.

*ACADEMIC USE: GeoCalculator packages can be used freely as an unregistered version by academics (teachers and students) for teaching and non-commercial research purposes. Academic users who wish to use the registered version, which removes the file Input/Output restrictions, must also purchase registration.
For commercial users the unregistered download version can be used for evaluation purposes only, and must be registered for continued commercial use.

Although every effort is made to rectify bugs as they are recognised, the author cannot guarantee that these packages are without error, and assumes no responsibility for their use, or for interpretations based on their use.
Frequent field work commitments may occasionally delay my ability to handle email queries promptly

Download GeoCalculator:

See the bugfix text file or the What's New section in the GeoCalculator Help file for details on progressive changes to the program

Note: Version 4.9.6 contains an important debug of the 'Oriented Core routines'. (That is, where a known reference plane is used to determine the orientation of an unknown plane in core that has not been oriented). All users who use such drillhole calculations should upgrade with the version shown here.

Zip file (.zip) containing the full set of installation files for the current version of GeoCalculator [v4.98 ~4.8MB].

Download the bugfix history (.txt file)

Compiled HTML Help file for GeoCalculator[~800kB]
[This file is now also linked from within GeoCalculator, but may need to be unblocked before it displays correctly [See topic below]

Zip file of the same containing the current Geocalc32_49.exe file and the GeoCalcHelp.chm alone [~960kB]
 [If you have trouble running GeoCalculator after replacing the old.exe file alone then download and install the full setup file set from above] [Note that version 4.9.7 includes an internal link in the help menu to the compiled .chm file. This file must reside in the same directory as the .exe file. If the Help file contents can not be viewed then follow the procedure for unblocking the file as outlined at right.

As part of Microsoft's security measures you now have to Unblock any .chm file in order view it. This site explains the procedure...
This link is another site that discusses the issues with viewing .chm files across networks.

Address all software correspondence to Rod Holcombe at: Note: I will attempt to answer all email promptly, but I am commonly absent doing field work. Please bear with me if that causes a delay

email for software enquiries:

About Us | Legal notice | Services | | ©2015 HCOV GLOBAL