English Dictionary

geologic time

noun

Time in relation to specific geologic features or events recorded in the Earth's rock strata.

Geologic time is divided into different periods and epochs.

意味（1）

Time in relation to specific geologic features or events recorded in the Earth's rock strata.

Geologic time is simply time used in the context of earth history, determined by geologic methods. Our only record of the passage of geologic time lies in the Earth's rock strata. This record is imperfect, but it is our only one.