gneissy

A geologist examines a gneissy rock sample in the field.

Definition

1. Adjective:
   • Composed of or resembling gneiss: "gneissy" describes a rock that has the characteristics of gneiss, a metamorphic rock with distinct banding and a coarse-grained texture.

Usage Examples

• (The rock formation exhibited the typical layered structure of gneiss.)
• (The path contained pieces of rock that looked like gneiss.)

Advanced Usage

• "gneissy structure": a geological term referring to the foliated, banded appearance typical of gneiss.

  • The gneissy structure of the sample indicated it had undergone intense metamorphism. (The rock's layered pattern revealed its transformation under heat and pressure.)

• "gneissy texture": the coarse, granular quality of a rock that resembles gneiss.

  • The granite here has a gneissy texture due to regional metamorphism. (The rock feels grainy and banded like gneiss.)

Variants and Related Words

• Gneiss (n): a metamorphic rock with banded minerals.

  • Gneiss is commonly used in construction for its durability. (The rock is strong and often cut into slabs.)

• Gneissic (adj): a synonym for gneissy, meaning of or relating to gneiss.

  • The gneissic layers were clearly visible in the quarry. (The rock's banding was easy to see.)

Synonyms

• Gneissic: directly equivalent, describing the same rock type.
• Foliated: having a layered or banded structure, though this term is broader and applies to other metamorphic rocks like schist.

Related Idioms