So, those sediments we saw yesterday? They’re faulted in the area around the Crucifix Site.

As this image shows, the style of faulting is normal faulting:

Annotated with some color to jazz things up a bit:

In normal faults, the upper block moves downward with respect to the lower block. They are typical of extensional tectonic settings.

Numerous small faults here — a little bit of displacement on each:

Ditto for this exposure (same place, just zoomed out a bit):

Nice! Two horsts and a central graben:

The normal faults exposed at the Crucifix Site are a lot like those we observe a kilometer to the north, up on the Volcanic Tableland. The difference is that the Volcanic Tableland faults disrupt the stiff upper layer of the Bishop Tuff (“Ig2”), while these Crucifix faults are smaller and more subtle — cutting through weaker stuff.