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Geologists Found Remnants Of Earth's Mantle That Have Lasted Over 2.5 Billion Years And Challenge Previous Beliefs About Our Planet's Oxidation Processes
The ancient remnants from Earth's mantle were a lot less oxidized than samples from the modern mantle. That means something must have changed between now and the Archean Eon, which was over 2.5 ...
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Historic study extends chart of life by nearly 1.5 billion years
T he Proterozoic Eon, spanning from 2,500 million to 539 million years ago, marked a transformative chapter in Earth's history.Often overshadowed by the more data-rich Phanerozoic Eon, this period ...
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Deep Time
The Precambrian eon is vast, almost unimaginably so ... The Precambrian encompasses 86 percent of the history of Earth. As its name implies, this includes all of geological time prior to the ...
ung.edu12y
Lewis F. Rogers Institute for Environmental & Spatial Analysis
IESA is designed for inquisitive minds craving to cast a brighter light upon Earth's many mysterious eon-spanning processes. The curriculum directs students to discover and explore new focus areas ...
Nature3y
Earth's Earliest Climate
climate has impacted — and been impacted by — life on Earth. This paper will take you as far back in the climate record as is currently possible, to the Archean Eon, from 3.9 to 2.5 billion ...