LABORATORY PROCEDURES

Lithologic Symbols

Basic lithologic symbols are provided as guidelines. Symbols similar to these are generally acceptable for use as patterns both on sediment distribution maps and in lithologic columnar sections, such as on core description forms. Although the symbols shown are the most commonly used symbols for each of the respective lithologies, the patterns must still be explained separately in a key. As with most graphics, users should also be mindful of the eventual publication scale when choosing line weights.