there is a reddish brown falls which extentds a few kilometers were found in Antarctica. An Australian geologist Griffith Taylor, who first explored the valley that bears his name. He thought it was because of red algae. That supposition was held for 100 or so years.
In comes geomicrobiologist Jill Mikucki at the University of Tennessee, who was interested in this phenomena since her graduate days. Ultimately she got funded and took a crew to Antarctica to investigate. She found a massive salt water lake under the ice. ,The brine is 3 times more concentrated with salt than normal. There is no oxygen. Her crew found there; a rare subglacial ecosystem of autotrophic bacteria developed that metabolizes sulfate and ferric ions, in the lake. So the problem solved huh?
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Do you think this explanation is outdated?
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