地質(ちしつ)

ちしつ
noun
geology, geological features
1. geological features, geological composition
The nature and composition of the ground or earth in a particular area, including rock types, soil, and underground structures.
この地域(ちいき)の地質(ちしつ)は不安定(ふあんてい)だ。
The geology of this area is unstable.
地質(ちしつ)調査(ちょうさ)の結果(けっか)、断層(だんそう)が見(み)つかった。
A geological survey found a fault line.
建設(けんせつ)前(まえ)に地質(ちしつ)調査(ちょうさ)を行(おこな)う必要(ひつよう)がある。
It is necessary to conduct a geological survey before construction.
2. geology (as a field of study)
The scientific study of the earth's physical structure and substance.
地質(ちしつ)学(がく)を専攻(せんこう)している。
I am majoring in geology.
地質学 = geology (academic subject)
地質(ちしつ)学者(がくしゃ)が火山(かざん)地帯(ちたい)の岩石(がんせき)を分析(ぶんせき)している。
Geologists are analyzing rocks from the volcanic zone.
地質(ちしつ)学(がく)は地球(ちきゅう)の歴史(れきし)を岩石(がんせき)や地層(ちそう)から読(よ)み解(と)く学問(がくもん)だ。
Geology is a discipline that reads the history of the Earth from rocks and strata.

COMMON COMPOUNDS:

  • 地質(ちしつ)調査(ちょうさ) (geological survey)
  • 地質(ちしつ)学(がく) (geology - the science)
  • 地質(ちしつ)学者(がくしゃ) (geologist)
  • 地質(ちしつ)図(ず) (geological map)
  • 地質(ちしつ)時代(じだい) (geological era)

RELATED TO CONSTRUCTION:

Before building, 地質(ちしつ)調査(ちょうさ) is conducted to assess:

  • Ground stability
  • Soil composition
  • Earthquake resistance
  • Underground water

This is especially important in earthquake-prone Japan.

general
Added 2026.1.13 20:35 · Revised 2026.3.3 9:40
04000/04055_chishitsu