Last Updated
：2025/11/20
geologic time scale
Noun
Japanese Meaning
地球の歴史や地質時代を年代順に区分した尺度 / 相対的または絶対的な年代を測定するための、地質時代の各部分を示す時間の基準 / 地層や地球の長い歴史を、時間的な順序で整理したシステム
（ plural ）
Quizzes for review
A chronological scale of the earth's history used to measure the relative or absolute age of any part of geologic time.
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geologic time scale
Students learned to read the geologic time scale to understand when major events like mass extinctions occurred.
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Students learned to read the geologic time scale to understand when major events like mass extinctions occurred.
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