Geological age

GEOLOGICAL AGE (EN: geological age; DE: geologisches Alter; FR: age geologique; ES: edad geologica; RU: век геологический) is the geochronological sub-division, which is subordinated to the geological epoch; the interval of time, during which there has deposited itself the stratum of the rocks, which are forming the geological stage. According to the data of the isotopic determinations, the duration of the geological age is approximately 10 million years during the Paleozoic, and 5-6 million years during the Mesozoic and Cenozoic.