Vegas/San Franciso Flights, Again

Part 2, The Red Rock Portion of the Spring Range

I took Sierra pictures on the way to San Francisco (click on this link to go back there), but this this trip also gave me some good views of the Spring Range as we left and returned to Las Vegas .  This page shows what was seen going to San Francisco, the next page shows what was seen of the Spring Range coming back (click on this link to go there).

The Spring Range is a north-south 'island in the desert' west of Las Vegas.  Here we are approaching its southern reaches from the east, with great views into the Red Rock recreation area (peaks at about 7,000 feet) with the main part of the Spring Range (approaching 12,000 feet) to the north.  The red rock on the right of the photo is what named the canyon:

We will take several snapshots as we cross the range at this southern point, directly east of the Las Vegas airport:

This is a great view of the Keystone Thrust Fault where the older limestone has been thrust over the younger sandstone by forces that have to do with the mountain-building events called the Sevier orogeny and the Laramide orogeny (click to go to a discussion of these events).  Some chunks of limestone are many miles deep and tens of miles wide, and were simply shoved over whatever existing terrain there was:

A few seconds later we see the road to Pahrump below us:

It doesn't take long before we are across the range and heading into the Pahrump Valley.  Mount Potosi lies directly below us with its 8,000 foot height and pine and scrub-oak forests:

The Pahrump Valley below us means we are done with the Spring Range Until we come back.  Its northern extent can be seen to end in desert in this photo, which shows the town of Pahrump as well as a groundwater discharge area  (lower left) where a line of vegetation shows where the Pahrump Fault forces water to the surface:

With a little neck-twist the Spring Range comes into view in the distance, with Las Vegas just beyond it to the right:

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