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.
GeoCalculator [enlarged screen shot] accepts and outputs structural data using a wide variety of formatting conventions for referencing lines, planes, and directions in geological space. Because input and output conventions can be set separately, GeoCalculator can be used to convert file data from one geological orientation convention and format to another.
As well as a numerical Results window, calculation results can be displayed in stereographic projection.
As well as instantaneous manual entry, batch data can be either pasted or read from Input files with no special requirements as to file formatting or data arrangement.
Oriented drillhole calculations [screen shot] include not only the commonly used oriented core calculations, but also calculations for partially oriented core, a method devised by the author for using known local structural features in unoriented core as a proxy for the orientation mark in oriented core. Thus oriented core marks can be extrapolated to unoriented sections of the same core, or old unoriented core can be processed as if it were oriented. (When ambiguities in this calculation occur the choices are output for manual selection). [Download manual for oriented drillcore procedures].
Drillhole calculations also allow the output of apparent dips in nominated section planes.
Conventions settings also include pre-setting terms used to describe structural features with variable international terminology. Most importantly this includes the terms used for describing oriented core angles, which vary widely from company to company. These can be preset to the local usage.
GeoCalculator (from v4.9) is both locale aware and flexible with respect to decimal (floating point) numbers. Decimal numbers can be entered using either period or comma decimal delimiters (even mixed) and will output to either format on demand.
Important Notice: There is a restriction on how unregistered users access some drillhole calculations and a limit on the number of data that can be input from file. (Paid registration removes these restrictions).
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
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.
GeoCalcHelp.chm 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]
GeoCalc32v49_exe.zip 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.