Granite and feldspar. The term "granitic" means granite-like and is applied to granite and a group of intrusive igneous rocks with similar textures and slight variations in composition and origin. These rocks mainly consist of feldspar, quartz, mica, and amphibole minerals, which form an interlocking, somewhat equigranular matrix of feldspar and quartz with scattered darker biotite mica and amphibole (often hornblende) peppering the lighter color minerals. Occasionally some individual crystals (phenocrysts) are larger than the groundmass, in which case the texture is known as porphyritic. A granitic rock with a porphyritic texture is known as a granite porphyry. Granitoid is a
Bohus granite the time of the formation of the Sub-Cambrian peneplain in the Late Neoproterozoic the rocks were at surface. Subsequently, the granites were buried in sediments and then intruded by NNW-SSE oriented basic dykes in the Permian. In the Mesozoic the rocks were subject to significant weathering resulting in the formation an irregular grand-scale relief called the Sub-Mesozoic hilly peneplain. At a smaller scale the weathering is thought to have produced numerous small rock basins now seen near the coast. Bohus granite The Bohus granite () is a type of granite that crops out along the Swedish West Coast in Bohuslän.