Fine-grained rocks

Usage examples of basalts.

Throughout the massive chamber, the decorative urns and pots and amphorae and figurines were either Wedgwood basalts with Empire-period themes or Han Dynasty porcelains.

Death-by-Winter's fastness is in the Titanleg Basalts in Bythoggia Major.

The mass spectrometer told them that their samples were iron-rich basalts, no more than five hundred million years old, based on their ratio of potassium to argon.

Zircons appear in most rocks apart from basalts and are extremely durable, surviving every natural process but subduction.

The vast plains were covered by flood basalts—frozen lakes of lava, like the maria of the Moon—and punctured by thousands of small volcanoes, shield-shaped, built up by repeated outpourings of lava.