Crossword puzzle clue "geological units"

Here are the possible solutions for geological units clue

Answer
Clue
Relevancy
eons
Clue
Huge geological time units
Geological units
Definition
EON, a long period of time, also AEON
aeon
Clue
Geological period
Geological time
Geological span
Geological time period
Longest division of geological time
Geological age
Definition
the largest division of geological time, composed of several eras, also EON

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