| Navn | Type | Lengde | Multiplisitet | 
                
                    
                        |  | LithologyValue |  | 1..1 | 
                    
                        |  | QuantityRange |  | 1..1 | 
                    
                        |  | CompositionPartRoleValue |  | 1..1 | 
        
     
    
        
            
                
                    | Name | Type | English | Description | 
            
                
                    | material | LithologyValue |  | The material that comprises part or all of the geologic unit. 
-- Description --
This refers to a vocabulary of lithological terms. | 
                
                    | proportion | QuantityRange |  | Quantity that specifies the fraction of the geologic unit composed of the material. | 
                
                    | role | CompositionPartRoleValue |  | The relationship of the composition part to the geologic unit composition as a whole.
-- Description --
EXAMPLE: vein, interbedded constituent, layers, dominant constituent. |