noun
horse; block of rock separated from surrounding rock
Geological term for a block of rock completely detached from the surrounding rock by mineral veins or fault planes. The gloss 'horse' is a direct translation of the Japanese term 中石, but the explanatory gloss is clearer for learners.
この鉱山では、中石が頻繁に見つかる。
In this mine, horses are frequently found.
断層によって周囲の岩から完全に分離した中石が観察された。
A horse completely separated from the surrounding rock by a fault was observed.