石せっ灰かい華か

noun

calcareous sinter; travertine

A mineralogical term for a porous, banded limestone deposited by mineral springs, especially hot springs. Often encountered in geology or onsen contexts.

• この温おん泉せん地ちでは、石せっ灰かい華かの美うつくしい段だん丘きゅうが見みられる。

  At this hot spring area, you can see beautiful terraces of travertine.