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#continents

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New research suggests a hidden force may be causing continents to rise. This discovery could revolutionize how we model Earth’s surface changes and resource distribution, offering insights into seismic activity, groundwater accumulation, and even climate shifts. Knowing how landmasses move can help predict natural events and optimize resource management. #Geology #EarthScience #Continents #Tectonics #Research

sciencefocus.com/news/mysterio

Our #Earth is around 4.5 billion years old.

Way back in its earliest years, vast #oceans dominated. There were frequent volcanic eruptions and, because there was no free #oxygen in the #atmosphere, there was no #ozone layer. It was a dynamic and evolving #planet.

Cratons are pieces of ancient #continents that formed billions of years ago.

Studying them offers a window into how processes within and on the surface of Earth operated in the past.

phys.org/news/2024-02-earth-ea

Phys.org · Earth's early evolution: Fresh insights from rocks formed 3.5 billion years agoBy Jaganmoy Jodder

Earth's #biosphere was able to increase as #continents emerged.

But when could continents first appear on rocky #planets of nearby #stars?

Radiogenic heating of the planetary mantle is evaluated through stellar metallicities.

The heat per unit mantle mass is compared to a threshold on Earth after which continents appeared.

Longer delays are inferred for some #exoplanets, but earliest continents could have arisen 2 Gyr before those on Earth.

#astrobiology #astronomy
iopscience.iop.org/article/10.

iopscience.iop.orgWhen were the First Exocontinents? - IOPscience