A new geological age has been entered by the Earth: the Meghalayan, the 3rd and final age since the start of the Holocene era began nearly 12,000 years ago, as declared by the ISC (International Stratigraphy Commission), the organization accountable for instituting the planet’s geological timescale.
This age would have begun more specifically 4,250 years before, when a worldwide drought hot our planet, evaluates the IUGS (International Union of Geological Sciences). The Meghalayan among the 3 recently named period: the other 2 are the Nordgrippian (between 8,326 and 4,250 ago) and the Greenlandian (between 11,700 and 8,326 ago).
The diverse ages of the history of Earth since its creation 4.54 billion years before have been named and divided systematically by the geologists. These durations are called as the eons, era, periods, epochs, and ages. At present, we are in the Phanerozoic eon, in the Cenozoic era, in the Quaternary period, during the Holocene epoch, and lastly in the Meghalayan age.
To conclude the beginning date of every age, the researchers look at the exclusive chemical signatures discovered in the samples of the rock: each of them is connected with a huge climatic occurrence. The Greenlandian, the initial Holocene (Early Holocene) age, started before 11,700 years, as the Earth headed off from the last ice age. The Middle Holocene (NorthGrippian) started around 8,300 years before when the Earth started to cool, most likely for the reason that huge quantities of fresh water melted from the glaciers in the North Atlantic and disturbed the ocean currents.
For the meantime, the Late Holocene (Meghalayan) started before 4,250 years, when a mega-drought distraught the civilizations across the globe, comprising Greece, Egypt, Palestine, Syria, the Middle East, and Mesopotamia. This drought—that would have remained 200 years—would have been resulted by the variations in ocean and atmospheric circulation.