Mass Extinction
Posted: Thu Feb 16, 2017 4:05 pm
Rocky outcrops in Canada and Japan hold clues to why most of the world’s
ocean life died out 250 million years ago – and why it took ages to bounce
back. Anthea Batsakis reports. The end-Permian mass extinction, or “great
dying”, saw more than 90% of all life wiped out a quarter of a billion years
ago – the biggest mass extinction Earth has ever seen – and it took a slow
10 million more to recover.
To obtain records of Earth conditions all those millions of years ago, the
team unearthed pyrite from rocky outcrops in Canada and Japan that were
once submerged in the Panthalassic Ocean – the enormous body of water
created at the start of the Permian Period when the landmasses dubbed
Gondwana and Euramerica collided and formed the supercontinent Pangea.
https://cosmosmagazine.com/palaeontolog ... extinction
ocean life died out 250 million years ago – and why it took ages to bounce
back. Anthea Batsakis reports. The end-Permian mass extinction, or “great
dying”, saw more than 90% of all life wiped out a quarter of a billion years
ago – the biggest mass extinction Earth has ever seen – and it took a slow
10 million more to recover.
- early-triassic - 2.jpg (144.94 KiB) Viewed 1142 times
team unearthed pyrite from rocky outcrops in Canada and Japan that were
once submerged in the Panthalassic Ocean – the enormous body of water
created at the start of the Permian Period when the landmasses dubbed
Gondwana and Euramerica collided and formed the supercontinent Pangea.
https://cosmosmagazine.com/palaeontolog ... extinction