Shale is a sedimentary rock primarily formed from clay and silt particles. These particles are typically derived from the weathering and erosion of other rocks, such as granite, basalt, or sandstone.
While coral skeletons can contribute to some sedimentary rocks, they are more likely to form limestone or dolostone. These rocks are formed from the accumulation of calcium carbonate, which is the main component of coral skeletons.
Here's a summary:
* Shale: Formed from clay and silt, primarily from weathering of other rocks.
* Limestone/Dolostone: Formed from the accumulation of calcium carbonate, often from the remains of marine organisms like coral.
