Linked from

The 8 pages that link to Volcanic glass, each with the reason it gives.

• ObsidianNarrower topic: Obsidian is the best-known natural example of this noncrystalline material.

• PumiceRelated: Pumice’s glassy material records the rapid cooling of gas-rich lava.

• TephraRelated: Many tephra fragments contain volcanic glass broken from rapidly cooled magma.

• TuffRelated: Many tuffs contain glass shards created when magma fragments explosively.

• PāhoehoeRelated: Rapidly chilled pāhoehoe surfaces can develop a thin glassy skin.

• Volcanic rockBroader topic: It shows how rapid cooling can suppress crystallization in volcanic material.

• Submarine volcanoRelated: Rapid quenching at the ocean floor can produce glassy volcanic crusts.

• Extrusive rockBroader topic: Extremely rapid cooling can leave extrusive rock with no crystals.