Diverse Microbial Life Forms Existed At Least 3.75 Billion Years Ago, Study Confirms paleontology science
3.75- to 4.28-billion-year-old microscopic filaments and tubes, which appeared to have been made by iron-loving bacteria, in rocks from the Nuvvuagittuq Supracrustal Belt in Québec, Canada. However, not all scientists agreed that these structures — dating about 300 million years earlier than what is more commonly accepted as the— were of biological origin.
“This means life could have begun as little as 300 million years after Earth formed. In geological terms, this is quick — about one spin of the Sun around the Milky Way Galaxy.”“If life is relatively quick to emerge, given the right conditions, this increases the chance that life exists on other planets.”
The paleontologists sliced the rock into sections about as thick as paper in order to closely observe the tiny fossil-like structures, which are made of hematite and encased in quartz. They found modern-day equivalents to the twisting filaments, parallel branching structures and distorted spheres, for instance close to the Loihi undersea volcano near Hawaii, as well as other vent systems in the Arctic and Indian oceans.
In their analysis, they concluded that the hematite structures could not have been created through the squeezing and heating of the rock over billions of years, pointing out that the structures appeared to be better preserved in finer quartz than in the coarser quartz .
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