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Astrobiology: 3.5 Billion-year-old Bacterial Ecosystems Found In Australia


Mapping the rise of life during the period of Earth s early history is challenging. Earth s oldest sedimentary rocks are not only rare, but have almost always altered by hydrothermal and tectonic activity.
But sometimes there are dramatic finds. A new study has revealed the well-preserved remnants of a complex ecosystem in a nearly 3.5 billion-year-old sedimentary rock sequence in Australia. 
The Pilbara district of Western Australia constitutes one of the famous geological regions that allow insight into the early evolution of life. Mound-like deposits created by ancient photosynthetic bacteria, called stromatolites, and microfossils of bacteria have been described by scientists in detail. However, a phenomenon called microbially induced sedimentary structures (MISS) had not previously been seen in this region. These structures are formed from mats of microbial material, much like mats seen today on stagnant waters or in coastal flats. ....

South Africa , Western Australia , David Wacey , Daniel Christian , Robertm Hazen , Carnegie Nora Noffke , Nora Noffke , Carnegie Institution , Dresser Formation , Solar System , Ancient Ecosystem , Year Old Dresser Formation , Astrobiology November , மேற்கு ஆஸ்திரேலியா , டேனியல் கிறிஸ்துவர் , கார்னகி நோரா ஞோப்ப்கே , நோரா ஞோப்ப்கே , கார்னகி நிறுவனம் , டிரஸ்ஸர் உருவாக்கம் , சூரிய அமைப்பு , பண்டைய சுற்றுச்சூழல் அமைப்பு , ஆண்டு பழையது டிரஸ்ஸர் உருவாக்கம் ,

10 Simple And Enduring Mysteries Of Our World


10 Simple And Enduring Mysteries Of Our World
With all our modern technology, it can be easy to assume that we know everything. With a few swipes of our finger, any of us can view detailed photos of the surface of Pluto or take a Google Street View tour through Antarctica’s McMurdo Station. Truly, the age of mystery is over.
Or is it? In spite of all our miraculous tech, we’re still a long way from understanding even some basic things about our planet. Here are 10 intriguing mysteries still surrounding our world.
10 The Unmapped Regions Of Our Greatest Cities ....

Mexico City , Distrito Federal , City Of , United Kingdom , Mount Everest , New South Wales , United States , Dave Ebert , Robertm Hazen , Jennifer Owen , Mount Everest Screening Committee , International Union For Conservation Of Nature , Carnegie Institute For Science , Enter The National Happiness Index , Google Street View , Unmapped Regions Of Our Greatest , Mysterious Unclimbed , Western Australia , Carnegie Institute , Endangered Many Species , International Union , City Is Growing The , National Happiness Index , மெக்ஸிகோ நகரம் , திஸ்திரிதோ கூட்டாட்சியின் , நகரம் ஆஃப் ,