What Causes Granite To Turn Into Gneiss

More fleshed out fuller and still correct answer.

What causes granite to turn into gneiss.

Intense heat and pressure can also metamorphose granite into a banded rock known as granite gneiss this transformation is usually more of a structural change than a mineralogical transformation. If the granite gets buried deep in the crust it often changes to a gneiss. By heat or pressure sometimes both. Short succinct and correct answer.

The appearance of granular minerals is what marks the transition into gneiss. These minerals are then transported in streams and rivers and often end up as sediments in the oceans. With still more metamorphism gneisses can turn to migmatite and then totally recrystallize into granite. Granite turns into gneiss.

By heat or pressure sometimes both. All rocks undergo a series of processes called the rock cycle where one type of rock changes into another. Heat and pressure cause granite to become gneiss and change sandstone into quartzite. These rocks primarily consist of quartz feldspar and mica.

Despite its highly altered nature gneiss can preserve chemical evidence of its history especially in minerals like zircon which resist metamorphism. If it is part of a mountain it gets weathered eroded and transported to the ocean. The change from granite to gneiss is not mineralogical i e. Gneiss is a metamorphic rock granite is an igneous rock and sandstone is a sedimentary rock.

This is due to the long minerals in the original granite lining up perpendicular to a regional stress field. Granite gneiss can also form through the metamorphism of sedimentary. Minerals are seen arranged in bands in gneiss. Granites at the surface are exposed to weathering in which they break down into mostly quartz and feldspars.

The mineral composition of both granite and gneiss is same but alteration of granite because of very high pressure and temperature leads to the formation of gneiss. When subjected to intense heat and pressure granite will. Well gneiss dosent turn into granite. There are no chemical changes but structural.

Well gneiss dosent turn into granite. Granite turns into gneiss.