Traces of primitive Earth organisms found in stalactites almost 3.5 billion years old in Australiaa discovery that could push the hunt for extraterrestrial life even further.
It’s the Stalactite slabs contain stromatolite Since Dresser training in Western Australia. Stromatolites are intrinsically strong, multilayered structures thought to reflect the complex intertwining of microbial communities and the environment that hosts them, although they have been controversial for many years.
In new research, a team of scientists led by the Natural History Museum in London, England, examined 3.48 billion-year-old stalactites using light and electron microscopes and tomography… and many other advanced tools to authenticate the biological origin of these stalactites. Stromatolite.
They managed to highlight numerous characteristics linked to biological origin in a scientific report which has just been published in the journal Geology.
An ancient stalactite containing stromatolite
An ancient stalactite containing Stromatolite – (Photo: Hickman-Lewis).
Theo Sci-Newssigns include heterogeneous layer morphologies, voids resulting from degassing of decomposing organic matter, cylindrical structures associated with phototrophic microorganisms…
This discovery contributed to Western Australia’s potential in research into the origin of life on Earth, as it was also the land that revealed biological signs in sediments more than 3 to 4 billion years old. years.
Additionally, this also opens another interesting door, as the stromatolite component is largely replaced by hematite due to recent alteration that scientists have exploited from Western Australian stalactites that are very similar to sedimentary rocks of Mars.
This is not surprising, because many studies show that Venus, Earth and Mars were born very similarly and configured for life, although it seems that only one planet has actually succeeded in hosting life and keeping it alive until today.
“Sedimentary rocks on the surface of Mars have been oxidized in a similar manner and are also primarily composed of iron oxides.” – said the authors.
Therefore, the discoveries on Earth will become a model, an important guide for Mars exploration devices, the most anticipated of which is the rover that functions as NASA’s Perseverance robot, exploring the mouth of the giant Jerzero hole, where an ancient impact created a vast river delta that the space agency says once supported life.
Article source: NLD
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Traces of the first land creatures were recently found in stalactites around 3.5 billion years old in Australia, a discovery that could pave the way for the hunt for life…