geothermal features
type: Concept
definition: Geothermal features are surface manifestations of the internal heat of Earth interacting with groundwater. Earth's internal heat developed during the early evolution of the planet, and additional heat is generated by the decay of radioactive elements, primarily uranium, thorium, and potassium. [Source: Encyclopedia of Geography; Geothermal Features]
broader: geomorphology

geomorphology
type: Concept
narrower: geothermal features

concepts
type: Collection
type: ConceptGroup
member: geothermal features