Rock Classification

The Settings page → Rock Classification tab offers customization of the rock characteristics dropdowns used in RSLog.

To access the Rock Classification tab on Settings page:

1. Go to the left-hand navigation menu and select Settings,
2. Click Rock Classification tab,
3. Make desired changes as necessary,
4. These tabs don't have a Save button as everything will be saved automatically.

These customizations include the following sub-tabs:

• Rock Types: User can add rock types to the three major rock types. These rock types are used by the layer description compiler.
• Slaking: The process in which earth materials disintegrate and crumble when exposed to moisture.
• Hardness: Describes the hardness of intact rock core. The default values are after USBR 2001.
• Grain Size: Describe the grain or clast size. The default values are after USBR 2001.
• Bedding Spacing: Describes the bedding thickness or spacing of sedimentary or bedded volcanic rock. The default values are after USBR 2001.
• Fracture Density: The fracture density is based on the fracture spacing observed in recovered core, excluding mechanical breaks, measured along the core axis. The default values are after USBR 2001.
• Healing: Describes the fracture healing. The default values are after USBR 2001.
• Weathering: The physical (and sometimes chemical) decomposition of a rock due to exposure.
• Alteration: Any change in the mineralogic composition of a rock brought about by physical or chemical means.
• Strength: Strength classification is based on the Unconfined Compressive Strength (UCS) of core specimens. When assessing strength, the geologist/engineer should be aware that you are estimating the intact strength (a sample of rock breaking along a defect provides an invalid strength estimate and the strength should be reassessed).
• Defects: Divided into several categories including: Type, Surface Shape, Roughness, Infill Type, Infill Thickness, and Infill Character.

Editing a Classification

To edit a default rock classification property:

1. Select the corresponding tabs for each classification system and adjust the default settings accordingly:
2. To add a new item to the list, click + New button from the toolbar located on top of the table.
3. To edit an item simply click on the cell and start editing,
4. If you want to ‘reset to default’, click the corresponding button from the toolbar.

Re-ordering the Entries

In a rock classification table (e.g. Weathering) you can order the entries by grabbing the handle (on the left end of that row) and dragging the row to the desired position.