首页 >  Term: volcanic glass
volcanic glass

A natural glass produced by the cooling of molten lava, or a liquid fraction of it, too rapidly to permit crystallization. Examples are obsidian, pitchstone, tachylyte, and the glassy mesostasis of many extrusive rocks. Compare: glass

0 0

创建者

  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 分数
  • 100% positive feedback
© 2024 CSOFT International, Ltd.