2 Noun 0 Verb 0 Adj. 0 Adv.
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ENgeological periodNoun
EN
A unit of geological time during which a system of rocks formed
periodepoch
bn:00040167n Concept
English:
geology
EN
The geologic time scale or geological time scale is a representation of time based on the rock record of Earth.
geologic time scale
bn:20238685n Concept