In the first geologic aeon, the moon was created, laying the foundation for an atmosphere rich in hydrogen, water vapor, and carbon dioxide. This period is known as the Hadean aeon.
Around 720-630 million years ago, the Cryogenian period followed the billion-year-long Boring Billion period. The Boring Billion period was characterized by a stable earth’s crust, slow evolution, and relatively unchanged climate.
The Palaeozoic era had its shortest period called the Silurian, which began after the first of Earth’s five mass extinction events. This event led to a significant decrease in marine genera diversity worldwide.
An Ancient Greek word means “new dawn,” and it’s where life forms that exist today started evolving during this epoch. It’s called the Eocene epoch.
In 2018, India state Meghalaya was confirmed as having a geologic era by international commission stratigraphy. Meghalaya is known for its longest cave where scientists found stalagmites recording evidence of geological transition leading to present era.
