👉 An asthenolith is a type of sedimentary rock that consists primarily of silicate minerals, such as quartz and calcite, in addition to other minerals like feldspar. These rocks are typically found in areas where there is a high concentration of silica-rich sand or gravel, which can be transported by wind or water. The term "asthenolith" comes from the Greek word asthenos, meaning "without heat," referring to the lack of heat within the rock itself. This means
