Outrageously Funny Word Dictionary :: Sandkey

👉 In the context of geology, a sand key is a feature in sedimentary rock that marks the location where two rocks meet. It is formed by the accumulation of fine-grained sand particles over time. Sand keys are often visible on top of the bedrock and can be seen from above or below the surface. They are an important characteristic of many types of sedimentary rocks, including sandstone, siltstone, and quartzite.

sandkey