Deposit: Grouping of deposits by type Sorted: Are the deposits sorted? Gravel: pri=primary, sec=secondary Sand: pri=primary, sec=secondary Silt and Clay: pri=primary, sec=secondary Organic: Is the deposit organic? Unit definition: how well defined is the unit? Drainage: How good is the drainage of the unit? Thickness: Approximate depth of surficial layer in meters. Age: The age of the unit.