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Next, the descriptions for each lithologic layer can be entered. The lithology consisted of 2.5 feet of sand and gravel, underlain by 9.5 feet of silty clay, underlain by sand. When entering layers the top layer should be entered first. To enter the lithologic layers, click on the Description column with the left mouse button. To add a new layer, click on the Add button on the Lithologic Layer form below.
Name/Title: Sand and Gravel Fill
Description: Loose, heterogeneous, medium to fine sand with ½ to ¾ inch sub-angular gravel (To set the text to italics, select the text and then press the Italics button).
Top Depth: 0
Horizontal Alignment: Left
Next, click on the Symbol tab at the top of the form to select a lithologic symbol for the layer. The tab shown below will be displayed. Select the USCS Symbols library and the second symbol.
To add a second layer, select the Description tab and press the Add button. The following information can be entered for this layer.
Name/Title: Silty Clay
Description: Mottled brown and grey silty clay with embedded sand and gravel.
Top Depth: 2.5
Horizontal Alignment: Left
Press the Symbol tab to select a symbol for this layer. Select the first symbol on the third row of the USCS Library.
Press the Add button and the Description tab again to add the third layer. The following information can be entered for this layer.
Name/Title: Sand
Description: Compact, medium to coarse sand.
Top Depth: 9
Horizontal Alignment: Left
Press the Symbol tab to select a symbol for this layer. Select the fifth symbol on the first row of the USCS Library.