noun
stable land-mass; craton
Geological term for a large, stable portion of continental crust, often used in academic contexts.
アフリカ大陸の大部分は安定陸塊で構成されている。
Most of the African continent is composed of stable land-masses.
クラトン is a direct loanword for 'craton' and is more common in modern geology texts, while 安定陸塊 is the native Japanese term.
Compound of 安定 (stable) + 陸塊 (land-mass). The term is a calque from Western geological terminology.