The geological map of the Quaternary shows the lithological (material) composition, genesis (origin) and age of the sediments forming the surface of the territory. The color on the map indicates the origin of the deposits, and the darkness of the color reflects the age of the deposits (the darker the color, the older the deposits). The age is additionally indicated by bright red lines marking: the maximum spread of the last - Nemunas - glacier, the edge of the Baltic stage of this glacier and the boundaries of the southern, central and northern phases of the Baltic stage glacier. The lithological composition of the sediments is marked with dotted and dashed or other symbols. The geological map of the Lithuanian Quaternary covers the entire territory of Lithuania.