Sand must first undergo compaction and cementation, turning it into sedimentary rock, and then additional heat and pressure must be applied to transform the sedimentary rock into metamorphic rock.
For sand to transform into metamorphic rock, it typically undergoes processes such as heat and pressure, which cause the sand grains to recrystallize, interlock, and form a solid rock with new mineral compositions and textures. This can occur deep within the Earth's crust where temperature and pressure conditions are suitable for metamorphism.
The process of forming metamorphic rock from sand involves burial, where the sand is subjected to high pressure and temperature deep within the Earth's crust, causing the sand grains to recrystallize and interlock, forming a solid, dense rock with new mineralogy. This process, known as metamorphism, can occur due to tectonic forces or the intrusion of magma.
