Science

New Period in Earth’s History named as ‘Meghalayan Age’

Meghalayan Age

Meghalayan Age: Geologists classify the last 4,200 years as being a distinct age in the story of our planet.

Geologists have now classified it as being a distinct age and are calling it as the Meghalayan Age. Sediments collected from a stalagmite in a cave in the north-eastern Indian state of Meghalaya helped define this period. It begun with a drought that destroyed a number of civilisations around the world.

The Meghalayan is unique because it is the first interval in Earth’s geological history that has coincided with a major cultural event, as agricultural societies struggled to recover from the shift in climate. The Meghalayan Age began with a mega global drought that devasted ancient agricultural civilisations from Egypt to china.

International Commission on Stratigraphy (ICS) announced the new division in time, which will now appear on all official charts depicting Earth’s geological past.

International Commission on Stratigraphy has officially subdivided Holocene into three stages. We are now in Meghalayan (for past 4200 years.) Seems to correspond to return of neoglaciation in Northern Hemisphere.

The latest version of the is now available! New Holocene subdivisions:

Greenlandian (11,700 yr b2k)

Northgrippian (8326 yr b2k)

Meghalayan (4200 yr before 1950)

International Chronostratigraphic Chart/Geologic Time Scale
International Chronostratigraphic Chart/Geologic Time Scale

The new age is the most recent section of a longer period known as the Holocene Epoch, which reflects everything that has happened over the past 11,700 years. The Meghalayan is unique. Every age is characterised by its global impact and a notable change in rocks and sediments. The concept of the Meghalayan was first proposed seven years ago. Due to specific chemical signatures found in stalactites and stalagmites.

A stalagmite found in the north eastern Indian state of Meghalaya has provided the best evidence of this, so far and therefore gave its name to the new age. Two other new phases within the Holocene – the Greenlandian and Northgrippian stages – are also identified based on ice cores sampled in Greenland, and together with the stalagmite they have been placed in protected archives for further study.

 

Tags

Leave a Reply

Your email address will not be published. Required fields are marked *

Close