Two posts in one-day! I must be jacked up on coffee something fierce!
Anyway, I was going through my photos from the recent industry-sponsored field trip to Wyoming, and I realized I had taken some panoramas that needed some stitching, stat. So I put a pot of coffee on, started up Photoshop, and got to work (as an aside, using a computer is, for me, an experience I would best describe as "harrowing"). I persevered, however, and present the fruits of my labor, below.
Anyway, this panorama is of the Triassic Chugwater Formation, exposed at the Alcova Reservoir in Wyoming (which is a completely awesome place, I might add). I expect Jeannette, who was also on the field trip, might start posting some stuff too, so I'll wait and see what she puts up before going into to much detail on the trip (I know that both of us got some pretty slick pictures, too).
Anyway, the Chugwater Fm is largely composed of silts and fine sands, and has been seriously messed up by a fair bit of gypsum. Sed structures are very rare, sadly. On the plus side, it is really really really red. Separating the lower Chugwater from the upper Chugwater is the Alcova Ls, representing a phase of shallow-water, carbonate-rich lake sedimentation that contrasts with the heavily oxidized, pedogenically-altered alluvial and fluival intervals of the rest of the formation. Unfortunately, we didn't get to spend much time looking at the unit on the trip, as we were focused on hitting the underlying Pennsylvanian Tensleep Sandstone.
Anyway, if you find yourself with some time in Wyoming, I would heartily suggest checking out the Alcova Reservoir. Rent yourself a boat at the marina and go for a paddle; there are a lot of really nifty exposures in the area.