地殻(ちかく)

ちかく
noun
earth's crust
academicgeography
1. earth's crust, crust (geology)
The outermost solid layer of the earth, above the mantle. A geological term frequently encountered in discussions of earthquakes, plate tectonics, and earth science.
地殻(ちかく)変動(へんどう)が起(お)きた。
A crustal movement occurred.
日本(にほん)は地殻(ちかく)変動(へんどう)が活発(かっぱつ)な地域(ちいき)にある。
Japan is located in a region with active crustal movements.
地殻(ちかく)は大陸(たいりく)地殻(ちかく)と海洋(かいよう)地殻(ちかく)に分(わ)けられ、それぞれ厚(あつ)さや構成(こうせい)が異(こと)なる。
The earth's crust is divided into continental crust and oceanic crust, each differing in thickness and composition.

Usage

地殻(ちかく) is a scientific term that appears frequently in Japanese news and education because Japan is located in a seismically active zone. The compound 地殻(ちかく)変動(へんどう) (crustal movement/deformation) is particularly common.

Common collocations

Related Words

Related: 地中(ちちゅう) (underground)
general
Added 2026.2.20 17:59 · Revised 2026.9.2 13:01
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