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Working in Moab from Bend Oregon( fixing hail damage on cars) Been here several months exploring and reading about the geology, This is a fun and timely episode for me! Between here and home I'm in geology heaven!!!
Thanks, Shawn! Nicely recycled ;) It was a pleasure to watch this video again! All seems calm on the Icelandic and Hawaiian volcano fronts, just lots of steaming/degasing going on... À bientôt ! :)
Going back to the kiluaea talk I wouldn't be surprised if we see an eruption from the upper part of the east rift zone this year since activity is around the summit area but I believe we will see more upper and middle east rift zone eruptions now then the lower section
With these erosion patterns, does this leave a quasi-dike, or this ridge is of harder material (sandstone), making this landed barrier ? Then, its weak spot developed with water, weather, and wind erosion, becoming a hole, turned into a tunnel, becoming an eventual arc.
Very informative Prof. I'm heading to SE Utah in the fall. I'll put this on my must visit list. I noticed a person standing on the bridge in the thumbnail picture. Is this permitted?
Shawn, I've seen other videos that I believe explained some of these bridges as being formed by wind? Your explanation seems to be more feasible or is there more than one process?
I recall from material mechanics the arch shape of either a rock window or a bridge is caused by the loading stress being along the arch form and why Roman bridges and bridges still today are arches. You make a formation thin enough for failure, it fails along the arch stresses. Hence no small round erosion tunnels of significant size. Why? Who knows... hint rocks fail in tension, not compression.
can you sometime explain how ancient dunes get preserved? It would seem as they start subsiding below sea level, that wave action would destroy them and that the sands would be dispersed.
I undersand your explanation of how erosion caused the riverbeds to move round. However, I didn't see explanation on how erosion didn't cut the top part and just eroded a huge hole below the "bridge deck". how come the top part didn't get eroded away as water dug its channel?
Thank you Shawn, as always, I found that really interesting. It makes sense. I am spending 3 nights, 2.5 days in Reykjavik next week. In fact this time next week I will just have checked into the hotel, er posh hostel! 😂. I can't wait. Got The Lava Show booked and The Golden Circle. Question, please 🙏. What are the chances of an eruption while I am there. I am both apprehensive and excited at the same time! Whatever happens, as a keen amateur photographer my main aim is to get some awesome shots!
Please LIKE and SUBSCRIBE. I also appreciate your continual support of these geology education videos. To do so, click on the "Thanks" button just above (right of Download button) or by going here: www.paypal.com/donate/?hosted_button_id=EWUSLG3GBS5W8 Or: www.buymeacoffee.com/shawnwillsey
What beautiful landscape with an interesting geological history. Thank you.
I've learned somthing new today. Thank you.
Thanks Shawn. This ancient process goes on, we're just a blip along the continuum.
Thanks for all the hard work on these videos Prof. Willsey
Whoot....another Prof Wilsey video. Been watching your channel for years, never gets old! Thanks again Prof! 👍
Working in Moab from Bend Oregon( fixing hail damage on cars)
Been here several months exploring and reading about the geology, This is a fun and timely episode for me! Between here and home I'm in geology heaven!!!
I love that lil spot! Thank you, as always
Many bridges are deteriorating beyond repair in the US but these endure.
Man-made vs. God-made.
Very interesting, Shawn! Thanks for the insights. 👍
Love Natural Bridges NM, one of the hidden gems of the park service. And a nice little campground as well.
Thank you for this video! I was at a natural Arch just yesterday (day before you posted). :) Now I know more about it.
Thanks, Shawn! Nicely recycled ;) It was a pleasure to watch this video again!
All seems calm on the Icelandic and Hawaiian volcano fronts, just lots of steaming/degasing going on... À bientôt ! :)
Going back to the kiluaea talk I wouldn't be surprised if we see an eruption from the upper part of the east rift zone this year since activity is around the summit area but I believe we will see more upper and middle east rift zone eruptions now then the lower section
Very cool! ❤✌️👍
Really ox bow lakes forming islands
With these erosion patterns, does this leave a quasi-dike, or this ridge is of harder material (sandstone), making this landed barrier ? Then, its weak spot developed with water, weather, and wind erosion, becoming a hole, turned into a tunnel, becoming an eventual arc.
Very informative Prof. I'm heading to SE Utah in the fall. I'll put this on my must visit list. I noticed a person standing on the bridge in the thumbnail picture. Is this permitted?
Shawn, I've seen other videos that I believe explained some of these bridges as being formed by wind? Your explanation seems to be more feasible or is there more than one process?
More than one process.
I recall from material mechanics the arch shape of either a rock window or a bridge is caused by the loading stress being along the arch form and why Roman bridges and bridges still today are arches. You make a formation thin enough for failure, it fails along the arch stresses. Hence no small round erosion tunnels of significant size. Why? Who knows... hint rocks fail in tension, not compression.
i'd be hesitant to stand on one of those in fear of it giving out lol
Amazing area. Thanks Teddy Roosevelt. Bully for you!
can you sometime explain how ancient dunes get preserved? It would seem as they start subsiding below sea level, that wave action would destroy them and that the sands would be dispersed.
I undersand your explanation of how erosion caused the riverbeds to move round. However, I didn't see explanation on how erosion didn't cut the top part and just eroded a huge hole below the "bridge deck". how come the top part didn't get eroded away as water dug its channel?
You should come to Kentucky and see our natural bridges. 🙂
Thank you Shawn, as always, I found that really interesting. It makes sense.
I am spending 3 nights, 2.5 days in Reykjavik next week. In fact this time next week I will just have checked into the hotel, er posh hostel! 😂. I can't wait. Got The Lava Show booked and The Golden Circle.
Question, please 🙏. What are the chances of an eruption while I am there. I am both apprehensive and excited at the same time! Whatever happens, as a keen amateur photographer my main aim is to get some awesome shots!
Were these rocks buried then uplifted or buried then revealed by erosion over 270 million years?
I reported someone for walking across this. Entirely against park rules.