What is cone in cone?

Cone in cone is a geological structure that consists of smaller cones or structures that are nested inside larger cones or structures. It is a rare type of sedimentary structure that commonly occurs in sandstones and mudstones. Cone in cone structures are typically cylindrical in shape and can range in size from a few millimeters to several meters in diameter.

The origin of cone in cone structures is not completely understood, but several theories have been proposed. One theory suggests that the structures are the result of mineral precipitation or crystal growth that occurs within the pores of the sediment. Another theory suggests that cone in cone structures are formed by the compression of sedimentary layers over time.

Cone in cone structures can be important indicators of past sedimentary environments and can provide valuable information about the depositional history of rocks. They are also sometimes used as building stones due to their unique appearance and durability.