Earth’s First Continents Sank Into The Planet Before Rising Up Again – Sept 22 2022

Earth’s First Continents Sank Into The Planet Before Rising Up Again

Posted By: Lymerick
Date: Thursday, 22-Sep-2022 02:30:19
http://www.rumormill.news/207989

Nature
20 September 2022
By Michelle StarrA new examination of some of the oldest rocks in the world suggests that the first continents on Earth were unstable, and sank back into the mantle before making their way out again and reforming.This could explain some of the more puzzling characteristics of cratons, extremely old and stable parts of the lithosphere (the crust and uppermost mantle) that have survived continental changes over eons and record Earth’s ancient history.The new findings could help us understand Earth’s changing geology over its 4.5-billion-year lifespan.”The rocks in the core of the continents, called cratons, are more than three billion years old,” explains geologist Fabio Capitanio of the Monash University School of Earth, Atmosphere and Environment in Australia.”They formed in the early Earth and hold the secret to how continents and the planet changed over time.”SNIP

CONTINUE

https://www.rumormillnews.com/cgi-bin/forum.cgi?read=207989

This entry was posted in Uncategorized. Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s