EGU Blogs

Geology Photo of the Week #38

This photo is a bit of a change of pace. This past weekend I was at the cottage (Garden Island, just outside of Kingston, Ontario) and was lucky enough to get pretty close to a Northern Water Snake that slithered over our swimming area. It later approached my girlfriend with a fish in his mouth as well…maybe it wanted to share? I dunno.

Of course, this wouldn’t be a photo of the week without geology so the rock that the snake is an Ordovician limestone that is part of the Black River Group. It is fairly fossiliferous and contains lots of large cephalopods and rugose corals.

A mature Northern Water Snake. They darken as they age. (Photo: Matt Herod)

A mature Northern Water Snake. They darken as they age. (Photo: Matt Herod)

This particular Nerodia sipedon is about 1m in length so a pretty large example. (Photo: Matt Herod)

This particular Nerodia sipedon is about 1m in length so a pretty large example. (Photo: Matt Herod)

We also had a massive Bullfrog move into the garden pond. Hope the snake doesn't get him! (Photo: Matt Herod)

We also had a massive Bullfrog move into the garden pond. Hope the snake doesn’t get him! (Photo: Matt Herod)

Matt Herod is a Ph.D Candidate in the Department of Earth Sciences at the University of Ottawa in Ontario, Canada. His research focuses on the geochemistry of iodine and the radioactive isotope iodine-129. His work involves characterizing the cycle and sources of 129I in the Canadian Arctic and applying this to long term radioactive waste disposal and the effect of Fukushima fallout. His project includes field work and lab work at the André E. Lalonde 3MV AMS Laboratory. Matt blogs about any topic in geology that interests him, and attempts to make these topics understandable to everyone. Tweets as @GeoHerod.