Last summer, August 20, 2011, to be exact, Dana, Intrepid Companion, and I visited Table Rock, at the south side of the Fort Rock/Christmas Lake Basin (FlashEarth location; crosshairs very close to photo location- zoom in to see details.) Table Rock is very much like Fort Rock, but much larger, filled with lava late in its eruption, and not as well known. It also has a slew of primary sedimentary structures along with secondary soft-sediment deformation and tectonic structures. While I don't know the details of its history, I love ogling its little tidbits.
I found the spot
below especially fun, and was at a loss making sense of what had
happened, because I was focused on what had gone where, and not paying
attention to the faults that had allowed those motions...
Callan, the geoblogosphere's structural go-to guy, with some comment about "the rarely seen splort structure."
A Close Look at the Irvingtonian
16 hours ago