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A continental divide that runs through a valley

14,000 years ago there was direct connection between what is now the Red River basin and the Minnesota River basin. Today, there’s a continental divide – with the Red flowing toward Hudson Bay and the Minnesota flowing toward the Mississippi and Gulf of Mexico. But what a strange continental divide it is – for it runs through the former outlet of Lake Agassiz, in what is now known as the Traverse Gap. This divide is not so much a high point in the landscape, but a just-not-quite-as-low area.

A selected few Eyjafjallajokull links

The eruption of Eyjafjallajokull (which means Island Mountain Glacier in Icelandic) started out in March as a relatively quiet and tourist-friendly Hawaiian style eruption. That petered out and then a few days later, the magma reemerged subglacially, producing the spectacular ash-producing phreato-magmatic eruption that has transfixed the world and stranded …

My picks of the September literature

Haggerty, Roy; Martí, Eugènia; Argerich, Alba; von Schiller, Daniel; Grimm, Nancy B. 2009. Resazurin as a “smart” tracer for quantifying metabolically active transient storage in stream ecosystems J. Geophys. Res., Vol. 114, No. G3, G03014 (Roy will be talking about this work in our session at the GSA Annual Meeting …