The Karstosphere consists of two large masses, — Eurasiatic–African and American, which divided by the Pacific and Atlantic Ocean floors and pierced by crystalline shields.
[2] The term and concept "karstosphere" in geographical literature was introduced by Georgian geographer professor Levan Maruashvili (respectively, 1969–70)[2][3][4] who defined it as a spatially discontinuous layer composed of the global areas of karstifiable rocks.
When discussing the concept of the kartosphere professor Maruashvili proposed the possible existence of karst phenomena within the entire sedimentary mantle of the earth.
Levan Maruashvili suggested that karst processes are restricted to sedimentary rocks.
The karstosphere is also defined as the assemblage of those parts of the sedimentary cover composed of the readily soluble rocks that experience intensive chemical action of waters and which possess the complex of characteristics known as karst.