Addressing fundamental unknowns about the earliest history of Earth's crust, scientists have precisely dated the world's oldest rock unit at 4.02 billion years old. Driven by the University of Alberta, the findings suggest ...
Earth Sciences
Sep 19, 2016
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47
(PhysOrg.com) -- New research by a team of British Earth scientists shows that while the Earth’s crust was made up of new material for much of its early life, it later began to recycle material three billion years ago, ...
(PhysOrg.com) -- Upward movement of the Earth's crust transformed the Straits of Gibraltar into a dam. Approximately five million years ago, the Mediterranean Sea dried up after it was sealed off from the Atlantic Ocean. ...
Earth Sciences
Feb 16, 2009
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Scientists have found a key indicator in determining whether the presence of carbon, found in the Earth's mantle, is derived from continental crust - a step toward better understanding the history of crustal formation on ...
Earth Sciences
Nov 9, 2016
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411
The rocks at the surface of the modern Earth are broadly divided into two types: felsic and mafic. Felsic rocks are generally relatively low density—for a rock—and light in color because they are made from whitish minerals ...
Earth Sciences
Jun 18, 2020
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37
According to a new study by geologists at the University of Toronto and the University of Maryland, the wealth of some minerals that lie in the rock beneath the Earth's surface may be extraterrestrial in origin.
Earth Sciences
Oct 18, 2009
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Geologists have long known that around 155 million years ago, a 5,000 km long piece of continent broke off western Australia and drifted away. They can see that by the 'void' it left behind: a basin hidden deep below the ...
Earth Sciences
Oct 23, 2023
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40
In an international collaboration, Earth scientists at the University of Cologne and Freie Universität Berlin have discovered that some magmas on Earth, which made their way through the deep terrestrial mantle and erupted ...
Earth Sciences
Apr 28, 2022
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143
(PhysOrg.com) -- New research from The Australian National University has shed light on the secrets of the deep Earth and will lead to better understanding of important geological processes.
Earth Sciences
Apr 11, 2011
1
0
Rock samples from northeastern Canada retain chemical signals that help explain what Earth's crust was like more than 4 billion years ago, reveals new work from Carnegie's Richard Carlson and Jonathan O'Neil of the University ...
Earth Sciences
Mar 16, 2017
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