igneous nghĩa là gì

Ví dụ về igneous

• The granular cause of igneous fabrics is often complex and the magnetic lineation cannot invariably be linked to flow direction.

• We tested one greywacke and three igneous compositions as contaminants.

• Primary hornblende is commonly partially replaced by fine decussate biotite indicative of some static recrystallization, although plagioclase retains igneous zoning.

• All divisions exhibit igneous layering on a variety of scales.

• The preservation of abundant igneous plagioclase, however, indicates that the body largely failed to equilibrate at eclogite-facies conditions.

• These coarse-grained patches are igneous in origin and grade into finer-grained gabbro at the edges.

• Igneous lithologies vary from diorite through granodiorite, and granite to pegmatitic granite.

• For the geologist, these two plume types are identified respectively with the large igneous province, and the hotspot trail.