According to a press release from the International Commission on Stratigraphy, the governing body responsible for delineating these segments of time, the Meghalayan Age is unique amongst intervals in the Geologic Time Scale because its start represents a global cultural event-the rebuilding of decimated agricultural societies-sparked by a global climatic event-the mega-drought, which wreaked havoc over the first 200 years of the stage.
After the end of last Ice Age.
"The Holocene is now defined by three stages: the Lower Holocene Greenlandian Stage, the Middle Holocene Northgrippian Stage, and the Upper Holocene Meghalayan Stage", the IUGS International Commission on Stratigraphy (ICS) said in a statement.More news: Anthony Joshua: 'I'd rather lose than be a drugs cheat'
Geologists have officially classified the past 4,200 years as a distinct age in time.
The Geologic Time Spiral depicting Earth's history. The International Union of Geological Sciences said that this age, dubbed the Meghalayan, started 4,250 years ago when drought struck the planet.
As per Stanley Finney who is a professor at Long Beach State University in the USA and Secretary General of the International Union of Geological Sciences (IUGS) in France. Analysis of stalagmite growing on the ground of Mawmluh Cave revealed that each of the stalagmite layers had different levels of oxygen isotopes. The Meghalayan's lower level is determined in a single stalagmite from a cave in northeast India, and is thus named for the state where it is found. The Meghalayan, the youngest stage, runs from 4,200 years ago to 1950. It began with a destructive drought, whose effects lasted two centuries, and severely disrupted civilizations in Egypt, Greece, Syria, Palestine, Mesopotamia, the Indus Valley and the Yangtze River Valley, the BBC report added.
"The isotopic shift reflects a 20-30% decrease in monsoon rainfall", said Mike Walker, from the University of Wales, UK. Dubbed the "4.2 kiloyear climatic event", this time period has rocked cultures and is evidenced in sediments on all seven continents.More news: Daily Show host defends joke about 'Africa winning the World Cup'
As the Inquisitr previously reported, the Anthropocene is meant to describe the human impact on the planet's geological record, marking the beginning of anthropogenic climate change. Depending on which events are deemed the most impactful, the periods can be further broken down into smaller stages.
Expressing his disappointment with the new ICS stages, he told the BBC: "We have lots of new definitions that perhaps now contradict the Anthropocene Working Group and go against what most scientists perceive to be the most important change on Earth in the last 10,000 years".
However, Walker points out that the newly-established Holocene subdivision don't come into conflict with a future designation of the Anthropocene.More news: Mark Wahlberg launching Chevy dealership in Ohio