Here's why:
* Weathering is the process of breaking down rocks into smaller fragments due to exposure to elements like wind, water, ice, and temperature changes.
* Rock types are classified based on how they were formed (igneous, sedimentary, metamorphic).
So, if you start with a granite rock (igneous), weathering will break it down into smaller pieces of granite, not transform it into a sedimentary or metamorphic rock.
However, the weathered pieces of rock can become part of the process of forming a new sedimentary rock. This happens when:
1. Erosion: The weathered pieces are transported away by wind, water, or ice.
2. Deposition: The pieces settle and accumulate in a new location.
3. Compaction and Cementation: Over time, the weight of overlying sediments compresses the pieces together, and minerals dissolved in water act as cement, binding them into a solid rock.
So, while weathering doesn't change the rock type directly, it plays a crucial role in the formation of sedimentary rocks.
