“Crucial for Life” –Ancient, Hidden Origin of Earth’s Plate Tectonics Unveiled

St Andrews Geology Team

 

Earth’s tectonic activity of some 15 moving plates may be crucial for life–and rare in our galaxy. The cycle of rigid tectonic plates in constant horizontal motion across the surface of the planet—makes Earth unique within the rocky planets of the solar system. Except, perhaps, for Jupiter’s icy moon Europa, regarded as perhaps one of the solar system’s best bets to host alien life, where massive slabs of ice are sliding over and under each other above a global ocean that reaches down 100 kilometers below the base of the ice –a depth 10 times greater than the Marianas Trench.

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“Extraterrestrial” –Solar System Dynamics Triggered Earth’s Plate Tectonics

Asteroid Impact

 

“It is remarkable to think that our oldest animal ancestors—and therefore all of us—may owe our existence, in part, to an unusual episode of plate tectonics over half a billion years ago” said Tim Lenton, professor of Climate Change and Earth System Science with the University of Exeter’s Global Systems Institute in June, 2019 about the most dramatic moment in the history of evolution when the spectacular supernova of biology, the Cambrian Explosion, was detonated and the world of animal life was born with the rise in oxygen levels during the formation of the supercontinent Gondwana and a major increase in continental arc volcanism—chains of volcanoes often thousands of miles long formed where continental and oceanic tectonic plates collided.

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Planet Earth Report –“Worst Day in Earth’s History to Japan’s ‘Ghost’ Wolves”

 

Earth from ISS

 

The “Planet Earth Report” connects you to headline news on the science, technology, discoveries, people and events changing our planet and the future of the human species.

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Planet Earth Report –“NASA Invention May Violate Laws of Physics to the Interspecies Internet”

Earth from ISS

 

The “Planet Earth Report” connects you to headline news on the science, technology, discoveries, people and events changing our planet and the future of the human species.

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“Planet Earths” –Common in the Universe

 

White Dwarf Star

 

“We have just raised the probability that many rocky planets are like the Earth, and there’s a very large number of rocky planets in the universe,” said Edward Young, UCLA professor of geochemistry and cosmochemistry. “We’re studying geochemistry in rocks from other stars, which is almost unheard of.”

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“The Venus Zone” –It was Once Habitable and Radically Different from Today

Venus from the ISS

 

“Our models show that there is a real possibility that Venus could have been habitable and radically different from the Venus we see today,” said Michael Way of The Goddard Institute for Space Science about Earth’s ‘twisted sister’ planet. “This opens up all kinds of implications for exoplanets found in what is called the ‘Venus Zone’, which may in fact host liquid water and temperate climates.”

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