地層(ちそう)

ちそう
noun
geological stratum, rock layer
technicalscience
1. geological stratum, rock layer
A layer of sedimentary rock or soil with internally consistent characteristics that distinguishes it from adjacent layers.
この崖(がけ)には何(なん)百万(びゃくまん)年(ねん)も前(まえ)の地層(ちそう)が見(み)える。
Strata from millions of years ago are visible on this cliff.
地層(ちそう)を調(しら)べることで過去(かこ)の環境(かんきょう)がわかる。
By studying the geological strata, we can understand the environment of the past.
化石(かせき)は特定(とくてい)の地層(ちそう)から発見(はっけん)される。
Fossils are discovered from specific geological strata.

Usage: 地層(ちそう) is a technical term used in geology and earth science to describe layers of rock and sediment.

Common collocations

Related words

Stratigraphy: 地層(ちそう)の年代(ねんだい)測定(そくてい) (dating of strata) uses methods like radiocarbon dating and fossil correlation to determine the age of rock layers.

Related Words

Related: 断層(だんそう) (fault)
Related: 堆積岩(たいせきがん) (sedimentary rock)
Compare: 褶曲(しゅうきょく) (fold)
Related: 峡谷(きょうこく) (canyon, gorge)
Related: 化石(かせき) (fossil)
general
Added 2026.1.17 20:31 · Revised 2026.10.11 9:21
06000/06366_chisou