stratigraphicSuperunitOf

Given a predicate that represents a relationship or action between entities, generate a one-sentence description explaining its meaning.  
# Instructions
Focus on describing the relationship, not the entities themselves. 
# Response Format
Begin the description with \' Indicates...\'

Predicate: stratigraphicSuperunitOf

Indicates that one stratigraphic unit is a higher-level or more encompassing unit that contains or groups together another stratigraphic unit within a geological stratigraphic hierarchy.