Talk:Emerald Lake (Yukon)

Infobox

Did my best to add. Might need some cleanup, & definitely needs some more info if it is to live up to its name.

Untitled

Help! Can somebody explain (or add a good ref to) the actual chemistry behind marl formation -- either in general or in this lake in particular? (That's what I was actually looking for when I came here -- and discovered Wikipedia didn't even have a disambiguation entry for this Emerald Lake...). I'm sure it must be straightforward, but I know better than to try to figure it out on my own. And all I've been able to find online are either geology papers, which assume you know the basics already, or nontechnical handwaving explanations. Sure, the CaCO3 comes from the limestone -- but why does it end up on the bottom? And what does the hypoxia have to do with it? Is it blooms of diatoms growing in the spring & then dying in the summer as they outstrip their O2 supply & the lake becomes hypoxic? Or is it some sort of inorganic annual cycle leading to CO3 precipitation?

For that matter, where does the clay come from?

But none of that answers the real question: why is the color of this lake so unusual -- what's different about the chemistry here?

Oh: and the Palaeos ref is just the first decent "define:marl" Google hit I got; feel free to replace it with something better. Gould363 (talk) 03:02, 19 March 2010 (UTC)

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