火か山ざん毛もう

noun

Pele's hair

Geological term for fine threads of volcanic glass formed when lava is ejected and stretched by the wind. Also called ペレーの毛.

See also: ペレーの毛

• 火か山ざん毛もうは、噴ふん火かの際さいに溶よう岩がんが風かぜで引ひき伸のばされてできるガラス質しつ