Showing posts with label 128. Show all posts
Showing posts with label 128. Show all posts

Thursday, February 5, 2009

Camping at Fisher Towers

sign You can camp at Fisher Towers, and I have camped there, although maybe not in winter. They have a campground up near the cliffs, just below the trailhead parking lot. I've camped there, a long time ago, not alone, maybe just once.
hill+cliff I've camped at Fisher Towers since that long ago time, at least once, maybe more than once, alone or with one dog. When camping, I don't always like to camp in set-up campgrounds where other people are nearby, almost hovering. It depends on the campground; it depends on my frame of mind.

The main time I remember camping outside the campground, that time with one dog [link not accessible on 11Feb2012], I camped on the small hill you see in the photo above and below. I camped inside the back of my truck, a different truck than the one I have now, a light green Ford with a nice Caravan camper and good setup in the back for sleeping and storing things. The dog liked to sleep on the floor of the truck bed; I slept above in a raised plywood bed.
hill Here's the little two-track road to the top of the hill upon which I once, at least once, camped. The view from the top of the hill was 360, with cliffs and sky all around, the towers behind.
closed The road to said former campsite is now closed. That is the way of the west at present. I can see closing this road to vehicular travel, but don't really get closing it to camping. No tents, the sign says! Probably one can just walk off around the hill to another hill and find another site, if one does not want to camp in the company of strangers. I, myself, will probably drive up some other side road the next time I come here, but will also consider camping in the maintained campsite if it is not too crowded and not too noisy.
road The road in and out of Fisher Towers is made of red dirt, which can get mucky or slippery in the snow and mud of winter. Here, it crosses a red sand wash on the way out from the towers.
wash closed As you can see, the sand wash to the right is also closed, this time specifically to motor vehicles of all kinds. I recommend paying attention to this sign. Walk, if You want to Go Down There! [It reminds me of Little Big Man: "You go down there," he says to Custer.]
wash1 The sand wash to the left, more or less back towards the towers, does not have the same sign, and shows at least one set of tracks. Someone probably removed the warning sign, or maybe this is supposed to be a travelway. Again, I recommend walking, unless you happen to have an actual road map.
wash2 What I find more interesting than the truck tracks, however, is the patterns made by the red sediment - clay, silt, sand, and gravel - when it was deposited by snowmelt water, a rainshower, or a tiny flash flood: mini-alluvial fan-type deposits, little eroded stream channels, and an overall braided to rippled texture.

Sunday, February 1, 2009

First Carnival of the Arid!

The first ever Carnival of the Arid is up, hosted by Chris Clarke of Coyote Crossing. The carnival links to numerous articles and photos from deserts all over, and includes a few posts of mine on the Fisher Towers area and my recent tribute to Edward Abbey.

The Carnival of the Arid is now scheduled to be a monthly thing, to be published on the first day of every month, so consider contributing in the future, if you haven't already. A few others from the GeoBlogosphere, also here and here, were included this month.

The photo above, is from Utah Route 28 south of I-70 on the way into Fisher Towers. The rock formation is probably Navajo Sandstone or possibly Entrada Sandstone.

Friday, January 23, 2009

Friday Fault Photos #10

airphoto If you'll go back to one of my earlier aerial views of the Fisher Towers and Professor Valley areas on the Colorado River, you'll see that I've enlarged one corner - and added in a couple lines indicating two faults that cut through the area. The faults, also seen on the geologic maps of the area, here and here, appear to be closely related to the northwest-trending Arches National Park uplift or anticline.
faulted areaThe photo above shows the dropped down and possibly folded or slumped graben, as seen from the dirt road just below Fisher Towers. The camera was looking just a little bit south of west (WSW).
sketch And here's a little field sketch of the same faulted area, as drawn in 1997 from a slightly different angle, showing how all units in the center of the two faults have been dropped down. The cliff-forming, Jurassic Wingate Sandstone is a good marker bed to follow in the photos and in the cartoon-like field sketch.

If you drive Utah Route 128 from I-70 to Moab, you will pass right by these structures. And actually, because they cross the river and the road, you will drive right over them.

This post, and others, were submitted to the first Carnival of the Arid at Coyote Crossing.

Thursday, January 8, 2009

Where in the West: Fisher Towers

towers

View of Fisher Towers from the trail-head parking lot.

After driving down Utah Route 128 from I-70 about 20 miles, you will come to a red dirt road and a sign pointing left toward Fisher Towers. As you probably recall, Fisher Towers is in the Richardson Ampitheater, in Professor Valley, within view of the red Colorado River. Fisher Towers and all the Permian and Triassic rocks making up the Richardson Ampitheater are very good examples of why the Colorado River sometimes runs red.

Follow the dirt road - this time of year I strongly recommend 4WD and caution - to the parking lot below the towers. A nice campground sits in the shadow of the towers, in case you want to spend the night. I thought it was a little chilly for that, however, and didn't stay.
tower Above, an excellent view of one of the towers looming overhead, with its dark red Moenkopi cap (Triassic), and red to dark purplish red Cutler Formation walls and base (Permian). If you follow the trail from the parking lot, you can walk beneath the towers, cross gullies and drainages, and generally have a good time.
towers closeup Another close-up view of the towers behind a cliff in the Cutler Formation.
cutler towers Above, a detail of mini-towers in the Cutler Formation.
cutler and cliffs In this photo, above, you can see what the Permian Cutler Formation looks like: the irregularly-bedded, orange-red to pinkish to purplish-red red beds below the red cliff of the Triassic Moenkopi, below the slope-forming Triassic Chinle Formation, which is below the Triassic Wingate Sandstone cliff at the very top of the slope.
cliffs The Moenkopi Formation does not appear to be very thick at Fisher Towers. In this last photo, it consists of just the dark red cliff in the center of the view, along with the medium red cliff just below that. The Cutler Formation starts at the first sign of the slope-forming, mostly talus-covered lighter purplish or pinkish red rocks below the cliff of Moenkopi. I think that the little ledge above the dark red Moenkopi cliff is part of the Chinle Formation, but am not entirely sure of where the upper Moenkopi contact lies. Individual ledges in the Chinle can be used as local marker beds, because they can be followed for some distance. Here, the Chinle is mostly reddish, but it can be various colors, as in the Painted Desert and Petrified Forest of Arizona.

This post, and the two preceding it in this series, were submitted to the first Carnival of the Arid, at Coyote Crossing.

Monday, January 5, 2009

Where in the West: Professor Valley

David B. Williams of Stories in Stone correctly identified the mystery area in the January-09 WITW as the Professor and Castle valleys, which are located along the Colorado River about 20 miles northeast of Moab, Utah, on backroad Route 128, which heads south from I-70 at exit 204, the westernmost of the Cisco exits. See the topographic map area here.

I've shown the original photo again, below, with major geologic units and contacts added to the duplicate photo below that. It turns out that the central portion of the area, which is the somewhat bowl-shaped Richardson Ampitheater, is underlain by the dark red Permian Cutler Formation, and that red and red-orange Triassic to Jurassic formations make up most of the rest of the picture back to about where I've drawn the Dakota Sandstone, which is Cretaceous.

no geo
geologyPlease note that the contacts between formations, especially between the Permian Cutler Formation and the Triassic Moenkopi Formation, are inexact. Additionally, the contacts between the Wingate Sandstone, Kayenta Formation, Navajo Sandstone, and Entrada Sandstone are inexact, possibly mislocated in some places on the photo, and more complex than shown. Generally speaking, I've left out the Kayenta Formation between the Wingate and Navajo formations, and have only shown a few formations above the Entrada Sandstone for some semblance of simplicity. Do not rely on my lines for any kind of mapping in the area other than crude, for-fun stuff; instead, go to the original sources!

For precise geologic details, please see the three geologic quadrangle maps of the area, the Fisher Towers quadrangle, the Big Bend quadrangle, and the Dewey quadrangle, also referenced below. Other nearby geologic maps can be found here. I noticed geologic explanations and descriptions of map units (map legends) only on the second and third of the above quadrangles. Another, smaller-scale map, covers the entire area, the geologic map of the Moab and eastern part of the San Rafael Desert 30' x 60' quadrangles. To follow along with the general stratigraphy of the area, see the strat column below for nearby Arches National Park.
strat

Arches National Park Stratigraphy from the USGS.

If you go to the original strat column page linked to above, you can click on any formation to find out more - possibly more info than you ever wanted to know - with lots of references and some nice photos! Also check out the ongoing series on the Colorado Plateau at Geotripper.

towers And hey, now for some photos! Above you can see the famous Fisher Towers, with the semi-frozen Colorado River in the foreground and the La Sal Mountains in the background. The photo was taken from Route 128 looking almost directly south, before getting into Professor Valley and the Richardson Ampitheater. For another excellent and similar view of the towers - without snow - see this post at Geotripper, which also describes the Moenkopi Formation.
towersFisher Towers is an awesome place, in my opinion, located on the east side of the Richardson Ampitheater. The towers are capped by the lower part of the Triassic Moenkopi Formation above the Permian Cutler Formation, which forms almost everything you see in the above photo, from the Moenkopi cap down. This view of the towers was taken from the red-dirt access road to Fisher Towers, looking more-or-less to the east.

From the towers, you can look all around the area, with the cliffs and towers behind you, and a grand 180-degree plus view in every other direction.

mesasTo the southeast, looking in the direction of Moab, which you can't actually see, you will have a great view of some mesas and spires. The mesas and spires are formed in the Wingate Sandstone, above the slope-forming Chinle and Moenkopi Formations. This mesa, with its several spires or pillars, is part of a series of mesas that separate Professor Valley from Castle Valley (see topo map).
spiresA closeup of part of the mesa shows the unusual rock formations in more detail. The pillars to the right of the central Wingate Sandstone cliff are called the Priest and Nuns, with the large man-like figure presumably being the priest. The larger pillar to the left of the Wingate cliff is called Castle Rock, and sometimes called Castleton or Castleton Tower. Perry, of Robert Perry Hooker, provided a link to a fabulous panorama taken from the top of Castle Rock.

Also, as mentioned in earlier comments, Jon Bon Jovi shot a video from the central Wingate mesa seen in the previous photo (and from Castle Rock?). The video is for his song Blaze of Glory. Castle Rock, the Priest and Nuns, and Fisher Towers can occasionally be seen in the video, along with other panoramas of the area.



Some References:
Doelling, H. H., 1996, Geologic map of the Dewey quadrangle, Grand County: Utah Geological Survey, M-169, scale 1:24,000.

Doelling, H. H., and Ross, M. L., 1998, Geologic map of the Big Bend quadrangle, Grand County, Utah: Utah Geological Survey, M-171, scale 1:24,000.

Doelling, H. H., 2001, Geologic map of the Moab and eastern part of the San Rafael Desert 30' x 60' quadrangles, Grand and Emery Counties, Utah, and Mesa County, Colorado: Utah Geological Survey M-180, scale 1:100,000.

Doelling, H. H., 2002, Geologic map of the Fisher Towers quadrangle, Grand County, Utah: Utah Geological Survey, M-183, scale 1:24,000.


This post, and others, were submitted to the first Carnival of the Arid at Coyote Crossing.

Sunday, January 4, 2009

Where in the West: January09

The Where in the West series was started here one year ago, in January of 08, when this LFD blog was in its infancy and in a different, unpublished format. Today's January-09 posting is the 8th posting of WITW (not counting one Where in the North in December). WITW is, therefore, a somewhat irregular quasi-monthly thing.

Once again, the unknown area, shown in two photos below, is somewhere in the western part of the United States. Where could it be? Why are some of the rocks so red (besides a slight bit of color enhancement to cancel out the haze)? What is the white unit? What is the basic geology of the area, what are some of the major rock formations, or what is the area known for? Damn, it looks like a river runs through it!

1

Photo One

2

Photo Two

The two photos were taken from an unknown altitude, looking northward, almost exactly two years ago. They could almost form stereo pairs, but don't. This is one of my favorite places in the entire world. (Uh, oh! Did I give it away?)

Btw, if you had to pick one geologic time period for the area, what would you pick?


This post, and others, were submitted to the first Carnival of the Arid at Coyote Crossing.