saddle reef
A mineral deposit associated with the crest of an anticlinal fold and following the bedding planes, usually found in vertical succession, especially the gold-bearing quartz veins of Australia.
A sharp gradient on oxygen concentration
Of a critic, giving opinions on something beyond his or her knowledge (expertise).
plural of dégustation
その古い鉱山は褶曲の鞍部に沿った豊かな鉱床を追って掘り進み、石英脈から数キログラムの自然金を産出した。
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