The name of the piece is derived from the Latin word sedimentum (sediment) and the Greek word metron (measure). The title refers to the sedimentation process, which is the tendency for particles in suspension to settle out of the fluid in which they are entrained. In this process the sedimentary rocks (such as rock salt, black coal or limestone) are formed. In sedimentology, the study of cross-sections of sedimentary rocks gives the information about the transformations of their structures. It is used for the interpretation of the geological history of the Earth. Sedimetron was composed using a multi-layer technique. The musical layers of the composition can be compared to the layers of sedimentary rock. Looking at the cross-section of the rock we can see the changes of ingredients, colours and texture. Analogically, the pitch and rhythm organization slowly change in the musical progression, and the intonation and timbre of the instruments are modulated. This piece is dedicated to the memory of Andrzej Chłopecki.