Wouldn't this melt "quickly" due to solar radiation based on how dark it is? That is to say, I wouldn't it most likely be closer to 100 years old than 100,000 years old?
That's for new soot depositing on ordinary, existing glaciers with previously high albedo. That causes a spiraling feedback effect of more forest fires and accelerating glacier melt,
It's probable that these dark glaciers are mostly sludge with only a bit of ice. We won't know until some field researchers go out there and gather data and samples.
This post--which actually engages with the content of the article--is being downvoted, while "Do black Labrador icebergs also have webbed feet, to swim better?" is being upvoted.
Where do we run once the redditification of HN is complete?