slgwv

slgwv club

Posted: 25 May 2017


Taken: 02 Apr 1992

12 favorites     23 comments    1 064 visits

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USA
New Mexico
Navajo Reservation
Shiprock
volcanic neck


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Shiprock, New Mexico

Shiprock, New Mexico
A classic volcanic neck seen in many textbooks. (There are lots better photos out there than mine! This was a drive-by when I passed thru the area 25 years ago.) A neck is the erosional remnant of a volcano, where all that's left of the edifice is the harder rock that filled the throat, i.e., the conduit that carried magma up the middle. Some radial dikes, representing magma that filled cracks within the volcano, are also weathered out. The inset shows one, with Shiprock in the background.
Shiprock is one of a number of necks in the area, where magma conduits poked up thru the flat-lying sedimentary cover. It's on the Navajo Reservation, and for that reason is no longer open to climbing as it's a sacred area.

Anton Cruz Carro, Alan Mays, Nouchetdu38, Ruebenkraut and 8 other people have particularly liked this photo


23 comments - The latest ones
 Cold War Warrior
Cold War Warrior
Navajo Ayres Rock then?
6 years ago.
slgwv club has replied to Cold War Warrior
Pretty much--except there are a lot of other sites that _also_ are now off-limits. In the last few decades the tribe has gotten considerably less relaxed about non-members wandering around the Rez. Not like when I lived in Flagstaff in the 70s--
6 years ago.
 Pam J
Pam J club
One more for my wish list

Admired in ~ I ❤ Nature
6 years ago. Edited 6 years ago.
slgwv club has replied to Pam J club
It's worth it!
6 years ago.
 tiabunna
tiabunna club
Indeed so very similar in shape to Ball's Pyramid, Steve - just lacking some ocean. :-)
6 years ago.
slgwv club has replied to tiabunna club
LOL! Details, details... ;)
6 years ago.
 Don Barrett (aka DBs travels)
Don Barrett (aka DBs… club
Whereas Chimney Rock, closer to 4-corners, is eroded plateau and not volcanic?
6 years ago.
slgwv club has replied to Don Barrett (aka DBs… club
Yep. There are a number of erosional buttes on the Rez elsewhere as well--Owl Rock by Kayenta, for example, and Sontsela (sp?) Butte near Lukachukai, not to mention Spider Rock in Canyon de Chelly. All also sacred sites, of course--
6 years ago.
Don Barrett (aka DBs… club has replied to slgwv club
I'm sightly confused... What we see, for example,in the relatively nearby Valley of the Gods (link below) are NOT volcanic necks, correct?
www.flickr.com/photos/donbrr/2633760301
6 years ago.
slgwv club has replied to Don Barrett (aka DBs… club
Those are indeed erosional, not necks. Note how you can follow the layers (strata) consistently from one spire into the next. By contrast, a neck is an intrusive igneous feature and so will cross-cut the country rock. The constituent igneous rock will also have a wildly different composition than the country rock, evidenced by different color(s) and textures. If you look at the contact of the rock types in detail, you'll typically see the country rock broken off; there may even be pieces entrained in the igneous rock, and some alteration ("contact metamorphism") due to the heating.

Here are some necks--or dikes; thin intrusive bodies, anyway--elsewhere on the Rez, somewhere off US 160 (outlined).
www.ipernity.com/doc/289859/23519399/in/album/451867
They have names, but at this point I'm not sure exactly which they are! Shiprock itself is visible in the distance on the skyline. Note the dark gray-green color and different weathering style, which contrasts strongly with the surrounding red, even-bedded sedimentary rocks.
6 years ago. Edited 6 years ago.
Don Barrett (aka DBs… club has replied to slgwv club
These help me technically understand the difference, but I need to see it more closely. I'm doing a long trip in a couple of weeks roughly up the Rio Grande, through Gunnison, and down along the Colorado, so will see if I can sort this out better visually.
6 years ago.
 Gudrun
Gudrun club
It does look like the prow of a ship from this viewpoint! We do have quite a few volcanic necks in Germany, only not quite as spectacular.
6 years ago.
slgwv club has replied to Gudrun club
I like to say about geology in the Southwest that it's not cluttered up with green growing things! ;)
6 years ago. Edited 6 years ago.
Gudrun club has replied to slgwv club
:-) In Germany it's certainly cluttered up with the green stuff,-)
6 years ago.
 slgwv
slgwv club
Thanks, Les!
6 years ago.
 Peggy C
Peggy C club
Beautiful shot and thank you for the details.

Thank you for posting in our group.
www.ipernity.com/group/virtualexplore
6 years ago.
 Roger (Grisly)
Roger (Grisly) club
An iconic rock even this side of the pond.
6 years ago.
 slgwv
slgwv club
Thanks, everyone! The place is indeed iconic, and I'd like to get better photos--if the Navajos allow it!
6 years ago.
 Ruebenkraut
Ruebenkraut club
great shot and interesting text
6 years ago.
 Nouchetdu38
Nouchetdu38 club
Amazing and beautiful!!!!!!!!!!!!!!!!
6 years ago.
slgwv club has replied to Nouchetdu38 club
True on both counts! ;)
6 years ago.
 Anton Cruz Carro
Anton Cruz Carro club
An other wonderful place ....and very beautiful picture !
Wish you a nice day.
5 years ago.
 slgwv
slgwv club
Thanks, Anton!
5 years ago.

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