Earth Enters New Geological Age Named Meghalayan


According to the International Stratigraphy Commission (ISC) Earth has entered in a new Geological age: The Meghalayan, considered being the third and lasting since the Holocene era started almost twelve thousand years ago.

A global drought jump-started the phenomenon more than 4250 years ago according to the International Union of Geological Sciences.  The previous ages are considered to be the Greenlandian and the NordGrippian eras, each lasting for around 4000 years. Different eras and periods have been centralized by scientists since the Earth was formed 4.54 billion years ago. The exact sequence is eon, era, period, epoch and age. For example, we are currently in the Phanerozoic eon, Cenozoic era, Quaternary period, the Holocene epoch and Meghalayan age.  The start of every age can be determined and differentiated by analyzing the chemical traces found in rock sample as they are different for each age. The Greenlandian age, considered to be the first Holocene age, started around 11700 years ago as the last ice age was near to its end. An intensive cooling process caused by the melting of glaciers most probably triggered the NorthGrippian age 8300 years ago.

Our current era began when a generalized drought devastated civilizations around the world, from Egypt, Greece and Mesopotamia towards the Middle East. The drought was most likely caused by changes in the ocean and atmospheric circulation.  Our current age is named Meghalayen as homage to a rock discovered from Meghalaya, a state in northeastern India.  Analysis of stalagmites found in the Mawluh cave indicated that during the period when our age started, the monsoon was severely weakened.

The analysis of geological evolution further allows us to predict how will climate change based on previous events that happened in our history. While the global warming we are currently facing happened before what lead to it and its consequences may change how we should act in the future in order to prevent negative events.


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