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原成岩 (げんせいがん) Japanese meaning | Kotomora

原げん成せい岩がん

Meanings

1

noun

primary rocks

Geological term for rocks that have not undergone significant alteration since their formation; often contrasted with secondary or metamorphic rocks.

この地ち域いきの地ち質しつは主おもに原げん成せい岩がんから成なっている。
The geology of this area consists mainly of primary rocks.

Kanji

原meadow, original, primitive
成turn into, become, get
岩boulder, rock, cliff

Etymology

Compound of 原 (gen, 'original') + 成 (sei, 'formation') + 岩 (gan, 'rock'). The exact historical derivation is uncertain; the term is a technical geological coinage.