👉 Undiluvial is a geological formation that consists of one or more layers of sedimentary rock, which are separated by fractures and faults. The term "undiluvial" refers to the fact that these rocks do not contain any mineral content, such as quartz, feldspar, or other minerals. This means that they are completely solid and unbreakable. Undiluvial formations can be found in a variety of locations around the world, including sedimentary basins, volcanic fields
