* Granite is an igneous rock: Formed from cooling magma, granite is composed of minerals like quartz, feldspar, and mica.
* Sandstone is a sedimentary rock: Formed from the accumulation and cementation of sand grains, usually derived from the weathering and erosion of other rocks, including granite.
* Quartzite is a metamorphic rock: Formed when sandstone is subjected to intense heat and pressure, causing the quartz grains to recrystallize and fuse together.
Here's a more accurate explanation of the rock cycle process:
1. Weathering and Erosion of Granite: Over time, granite mountains are weathered by wind, rain, and ice. This breaks the granite down into smaller fragments.
2. Transportation and Deposition: The granite fragments are transported by wind, water, or glaciers and deposited in a new location, often in layers.
3. Sandstone Formation: If the deposited fragments are mostly sand-sized, they can be cemented together by minerals dissolved in groundwater, forming sandstone.
4. Metamorphism: If the sandstone is buried deep underground and subjected to intense heat and pressure, it undergoes metamorphism. This process transforms the sandstone into quartzite, where the quartz grains recrystallize and interlock.
In summary, the transformation from granite to quartzite involves a series of steps within the rock cycle:
1. Igneous rock (Granite) -> Sedimentary rock (Sandstone) -> Metamorphic rock (Quartzite)
It's important to remember that the rock cycle is a continuous process, and rocks can be transformed from one type to another over millions of years.
