An isolated reservoir untouched for up to 2.64 billion years has been found at a mine in Ontario.
The water has been cut off for so long that it dates back to when the first multicellular life appeared on Earth. Rich in dissolved gases the reservoir is located deep underground and could potentially play host to primitive microbial life. If this turns out to be the case then it could mean that water trapped deep beneath the surface of other planets could also prove hospitable.
"What we can be sure of is that we have identified a way in which planets can create and preserve an environment friendly to microbial life for billions of years," said geochemist Greg Holland. "This is regardless of how inhospitable the surface might be, opening up the possibility of similar environments in the subsurface of Mars."
"Water found in a deep, isolated reservoir in Timmins, Ont."
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