This command defines the table of Ferm codes. Each ferm code is assigned a full name and drawing options. These settings are user-definable and additional Ferm codes can be added. The drawing settings are used to hatch the strata in Draw Geologic Column by matching the strata Ferm code with the Ferm code definitions. Ferm codes are assigned to strata as a strata attribute. To use Ferm codes, each strata should have an attribute called "FERM". The FERM attribute needs to be defined in Define Attributes as a Non-Numeric attribute so that the Ferm code definitions are not limited to just numbers. A Non-Numeric Ferm attribute (a string) allows for Ferm codes containing letters such as 100A. The Ferm code definitions are stored in a file with a .FRM extension. If the window is empty on the initial screen, simply choose load and load the default FRM file from the Carlson DATA folder.
Ferm Codes are lithologic descriptions listed by numeric rock codes (found at http://www.uky.edu/KGS/coal/fermcode.htm), as well as English names. The Ferm codes are derived from the core-logging manual, Cored Rocks of the Southern Appalachian Coal Fields, (http://www.uky.edu/KGS/pubs/SappCoreBook/SAPP.html) by J. C. Ferm and G. A. Weisenfluh from the University of Kentucky.
Pulldown Menu Location: Drillhole
Keyboard Command: fermdef