Scientists recently unveiled the nation's newest "oldest known" rock — discovered in Michigan's Upper Peninsula. Michigan, Minnesota and Wisconsin all feature ancient rocks known as gneisses — ...
Scientists recently unveiled the nation's newest "oldest known" rock — discovered in Michigan's Upper Peninsula. Michigan, Minnesota and Wisconsin all feature ancient rocks known as gneisses — ...
More than 3.5 billion years ago, the Earth was not the hospitable world we know today. The atmosphere lacked oxygen, the seas ...
A new analysis of rocks thought to be at least 2.5 billion years old helps clarify the chemical history of Earth's mantle -- the geologic layer beneath the planet's crust. The findings hone scientists ...
Deep in some of Earth’s oldest rocks, traces of ancient life still linger, even when every cell has crumbled. You would not see shells, bones, or clear microfossils in these rocks. Instead, you would ...
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