Our first photo set looks back to the east. You do remember that last time, before we stopped for our little
As explained previously, that fault appears to wrap around to become what I've drawn in as the same fault strand, high on the cliffs in the upper right. I've postulated a lower strand, drawn in hachured bright blue. The exact position of the proposed fault is questionable, possibly higher on the hill than I've shown it, as is the formation contained within in the resulting "middle plate," which I've shown as Bonanza King. In this first photo, taken in late February of this year, things look pretty brown, because spring has just barely arrived.
The cliffs on the side of the road are captivating in that they look iron stained and possibly brecciated. I think they make a great backdrop to a photo that's very similar to the first one, but which was taken on a green spring day in early May, 2009. The creosote was in bloom, and so were some cacti and other wildflowers.
I'm not sure what rock formation is exposed in this almost-always shadowed cliff. It might be Carrara, as labeled, or it might be Bonanza King. |
Here we are, a little to the north of the last spot, along an old wash channel paralleling the road, still looking to the east. |
The same photo with geologic labeling by moi. (H/t to Dana Hunter for the "moi.") |
Looking back to the first photo set, there’s a huge alluvial fan coming off the higher cliffs south of the road. On our most recent trip through the canyon in early 2016, I became fascinated by the massive alluvial fans within this part of the Grapevine Mountains. It looked like one hell of a lot of erosion to me—and probably all taking place fairly rapidly and fairly recently when the Grapevine Mountains were uplifted radically in the late late Cenozoic—and so I took a number of photos of fans, some that looked active, like this one, and others that looked older.
A steep side canyon area south of the road has filled with coarse alluvial debris, forming an alluvial fan complex. |
A closer view of part of the alluvial fan. |
A reddish color in alluvium is often indicative of an older age. Rocks above the fan are all Bonanza King Formation. |
Google Earth image of our second fan complex; magenta lines are related to my idea(s) of the TCFZ. |
A little bit of alluvial air-photo mapping. |
I then turned to the west, zooming in to see what I thought might be some reddish talus, possibly small alluvial fans, high on the slope.
Reddish talus high on the slope below dark gray and reddish outcrops of the Bonanza King Formation. |
Here is my best guess of the geology, taken from Niemi (2012) and Google Earth air-photo interpretation. |
Meanwhile, back on the lower slopes:
Bloomin’ cactus! |
These leafy green plants were everywhere. |
Barrel cactus, yellow wildflowers, and ephedra (the olive green plant behind the barrel clump). |
Related Posts:
The Approach to Titus Canyon: Tan Mountain
The Approach to Titus Canyon: Up and over White Pass
The Approach to Titus Canyon: To Red Pass
The Approach to Titus Canyon: Just Below Red Pass
A Hike at Red Pass, Titus Canyon Road, Death Valley, CA
Titus Canyon Road: A Little History and a Few Maps
Down into Titus Canyon: We Leave Red Pass Behind (Finally!)
Scribbles
Titus Canyon: The Upper Part of Lost Canyon
Leadfield: Scams with a Side of Geology
Leadfield: Views from Old Mine Buildings
Leadfield: Geology...and a Cactus...on the Way Back to the Parking Area
Almost Titus Canyon: Is This a Fold? And... Apparent Dip with Post-it® Notes
Titus Canyon: The TCFZ, the FCFZ, and a few Other Faults
Titus Canyon: Another Look at the Titus Canyon Fault and A Scramble
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