High Water Across the West: The Humboldt River in Carlin Canyon — With the Carlin Canyon Unconformity!

Well, there we have it: the Carlin Canyon unconformity with the Humboldt River running nearly bankfull on April 11th of this year.

Looking downstream, back toward the tunnels, we're actually still looking at the unconformity, but it's cropping out poorly on the slope below the tilted limestone beds of the Pennsylvanian-Permian Strathearn Formation.

I went ahead and cropped the best photo I took so we could zoom in on the unconformity in it's classic exposure, and then drew a line right along the contact.

The Strathearn lies unconformably over the near-vertical (to locally overturned) Mississippian-Pennsylvanian Diamond Peak Formation, which is sometimes mapped as the equivalent Tonka Formation in this area.

Zoom in on this feature with a GigaPan by Ron Schott. And if you click the Google Earth link below his GigaPan, you can view the feature *and* the GigaPan in Google Earth!