Helen’s obituary in the New York Times will start to give you a sense of just how remarkable she was as a reporter and public health expert.

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In the forest yesterday…

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I'm sure you're all as excited as I am to see this dolomite-rich colluvium that's moved downhill over sandstone on a slope in the Driftless Area. It's a patchy sheet, thickening in hollows in the sandstone, thin or completely absent elsewhere. If you were an oak tree you might care about this.

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lots of coarse fragments) compares to the weathered sandstone in terms of moisture availability for plants. Whole-profile organic matter content is quite high in soils formed in the dolomite-rich colluvium, even on very steep slopes. Also high organic N and P.

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Taken from the road, I don't want to piss off the owner(s) if there's a chance they'd let me go up there and take a closer look. I spent a lot of time studying colluvium like this in southeast Minnesota. Now I'm interested in how the dolomite-rich colluvium (silty matrix but...

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