groundmass

• Termo geológico que designa o material cristalino de granulação fina que forma a matriz de uma rocha ígnea, na qual estão incrustados cristais maiores (fenocristais).

A geological term referring to the fine-grained crystalline material that forms the matrix in which larger crystals are embedded in an igneous rock.

incontável

1. Geological matrixC2formalscientific

   The fine-grained crystalline material in which larger crystals are embedded in igneous rocks.

   Matriz geológica

   • The groundmass of the basalt contains tiny crystals of feldspar.
   • Geologists study the groundmass to understand the cooling history of the rock.
   • Phenocrysts are often surrounded by a finer groundmass in porphyritic textures.

   Sinônimosbasematrix