What are lost continents, and why are we discovering so many?
For most people, continents are Earth's seven main large landmasses.
Earth Sciences
Nov 25, 2019
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News tagged with continental crust
New model suggests lost continents for early Earth
A new radioactivity model of Earth's ancient rocks calls into question current models for the formation of Earth's continental crust, suggesting continents may have risen out of the sea much earlier than previously thought ...
Earth Sciences
Jul 1, 2019
3
12
Sedimentary, dear Johnson: Is NASA looking at the wrong rocks for clues to Martian life?
In 2020, NASA and European-Russian missions will look for evidence of past life on Mars. But while volcanic, igneous rock predominates on the Red Planet, virtually the entire Earth fossil record comes from sedimentary rocks.
Space Exploration
May 17, 2019
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189
Geologists find out how over 2.6 Ga years old rocks were formed at Limpopo Complex
Cratons (from the Greek "power" or "might") are the areas of the oldest continental crust on Earth, and are preserved only in only a few places around the world. According to scientists, the Kaapvaal Craton in the South Africa ...
Earth Sciences
Jul 17, 2018
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10
Deep biosphere microbes expand the chemical signatures of life
Search for signs of ancient microbial life in the geological record is challenging due to degradation of the primary organic material. Therefore, proof of biogenic origin often relies on chemical signatures that microorganisms ...
Earth Sciences
Jun 27, 2018
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23
Earth could have supported crust, life earlier than thought
The early Earth might have been habitable much earlier than thought, according to new research from a group led by University of Chicago scientists.
Earth Sciences
Jun 5, 2018
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205
Europium points to new suspect in continental mystery
Clues from some unusual Arizona rocks pointed Rice University scientists toward a discovery—a subtle chemical signature in rocks the world over—that could answer a long-standing mystery: What stole the iron from Earth's ...
Earth Sciences
May 16, 2018
2
89
How the Pilbara was formed more than 3 billion years ago
The remote Pilbara region of northern Western Australia is one of Earth's oldest blocks of continental crust, and we now think we know how it formed, as explained in research published today in Nature Geoscience.
Earth Sciences
Apr 17, 2018
2
93
Researchers discover missing ingredient from Earth's continental crust
Researchers from Curtin University have identified a missing ingredient in the composition of the continental crust, opening up a new chapter in the Earth's geological history.
Earth Sciences
Feb 14, 2018
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15
Analysis of titanium in ancient rocks creates upheaval in history of early Earth
The Earth's history is written in its elements, but as the tectonic plates slip and slide over and under each other over time, they muddy that evidence—and with it the secrets of why Earth can sustain life.
Earth Sciences
Sep 22, 2017
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