<< Click to Display Table of Contents >> Navigation:  Data Entry > Borings and Wells > Editing a boring or well log > Lithology

Lithologic layers are used to indicate the subsurface strata encountered during drilling. The lithologic descriptions are displayed in the Description column and the lithologic symbols are usually displayed in the Symbol column of the borehole log.

 

At the top of the tab there are buttons to Add and Delete layers. The following information can be edited for each layer:

 

Top: This is the top depth of the layer and should be between the start and end depths of the log.

 

Bottom: The bottom depth of the layer is optional. If it is not specified or is less than the top depth, the top depth of the next layer is used.

 

Name: This is the layer name selected from the list of lithologic macros. It is used to quickly fill in the symbol, title, and description of the layer using the information specified in the lithology macro.If the template for the log specifies the Title Edit mode as “Text” for the lithology description column, the Name column will not appear on this form. To select a layer name tap on the Name column, the Lithology Macros form below will be displayed. For more information see the section on Selecting Lithology Macros.

 

Title: The optional name of the layer displayed above the description.

 

Description: The description is used to describe the lithology of the layer.

 

Symbol: This is the symbol used for the layer in the Lithology Symbol column. The symbol can be changed by clicking on it with the left or right mouse buttons. For more information see the section on Selecting Lithology Symbols below.

 

Top Line Style: This is the line style to be used for the top layer boundary.

 

Lithology: Depending on the template used for the borehole, this is used to select the lithology descriptor of the layer from a predefined list.

 

Color: Depending on the template used for the borehole, this can be used to select the color descriptor of the layer from a predefined list.

 

Porosity: Depending on the template used for the borehole, this is used to select the porosity descriptor of the layer from a predefined list.

 

Consistency: Depending on the template used for the borehole, this is used to select the consistency descriptor of the layer from a predefined list.

 

Odour: Depending on the template used for the borehole, this is used to select the odour descriptor of the layer from a predefined list.

 

Custom List Data: Custom list data can be entered for each layer using the Lithologic Custom column in the template. The name of this column will be the name of the data column in the template. When this column is selected a drop down list showing the symbols and description in the custom list is displayed. The text can be selected from this list. Up to 5 custom list columns can be added for a layer.