Crossword puzzle clue "geologic study"

Here are the possible solutions for geologic study clue

Answer
Clue
Relevancy
cram
Clue
Study, study, study
Definition
to pack tightly
nerds
Clue
"Study, study, study" types
Definition
NERD, a person obsessed with computers at the expense of human interaction, also NURD
age
Clue
Geologic study
Definition
to grow old
aeon
Clue
Geologic period
Geologic time unit
Geologic time span
Definition
the largest division of geological time, composed of several eras, also EON
aeons
Clue
Geologic spans
Two or more eras in geologic time
Definition
AEON, the largest division of geological time, composed of several eras, also EON

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