the gravel being deposited at the
surface at the very same time was
subsequently faulted and rotated down
against the underlying of underlying
mylonites following along so as
these rocks came from deep levels up
toward the surface the surface rocks
were coming down toward the deep levels
to meet them and rotating at the same
time so you have this this gravel that's
now a rock we call conglomerate that's
about 22 million years old according to
our best estimates that's been
rotated down and juxtaposed or faulted
against this underlying mylonite and
the zone where you see this dramatic
juxtaposition of the Earth's surface
rocks down against these kind of very
deep-seated rocks is here just you know
less than half a meter thick marked by
this red zone of finely comminuted or
ground-up fault gouge and that flat line
horizon extending across the top of this
outcrop is the famous Ruby Mountains East Humboldt Range
Detachment fault we call normal fault that
takes upper crustal levels and faults them down against deep crust.
them down against the deep crust
