Iceland's Southwest Tip: Sea stacks, bomb sags, and explosive eruptions - Oh My!

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Journey to the southwest tip of Iceland on the Reykjanes peninsula with geology professor Shawn Willsey. Here the Mid-Atlantic Ridge, the boundary between the North American and Eurasian plates comes ashore. Explore scenic sea stacks, volcanic rocks that record explosive eruptions, and a very cool volcanic feature called a bomb sag.
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Shawn Willsey
College of Southern Idaho
315 Falls Avenue
Twin Falls, ID 83303
Video GPS location: 63.81531, -22.72324

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5 сен 2022

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Комментарии : 32

@plymptonpleb Год назад

After watching the Iceland volcanoes that errupted last year and this, I really appreciate your explanations of Icelandic geology.

@albertteitsson9359 Год назад

Yes it's was needed.

@dancooper8551 Год назад

These are almost as good as being on an actual field trip to Iceland. Thanks!

@williamlloyd3769 Год назад

Spent 18 months serving at Naval Air Station (NAS) Keflavik in 1979-80. Appreciate your educational series / explanation of the geological structures I observed back then. PS - working my way through your other videos

@shawnwillsey Год назад

Thanks for serving. My dad spent 20 years in the USAF.

@TurnerRentz 7 месяцев назад

Navy food is better than air force food.

@gordybishop2375 Год назад

Thank you for this view of the world and explanation. You Rock

@Don.Challenger Год назад

Very good stuff again: Shawn doesn't need a dog along, he's his own rock hound - fresh air and a rocky beach to run, with plenty going on about for interest's sake. And not only interesting/entertaining, it's more importantly, educating us all.

@Danika_Nadzan Год назад

Another great explanation of what we're seeing with you. Iceland certainly provides a wide range of volcanic formations and rock types...I had no idea before your videos.

@b.a.erlebacher1139 Год назад

Thanks for these explanations and examples of the processes that formed these landscapes. I've spent most of my life on the precambrian shield and the heavily glaciated areas of southern Ontario. I can "read" that topography fairly well, but became interested in Iceland by watching the last two fissure eruptions on youtube. What a very strange and beautiful place. Having seen the recent eruptions, and what the results of older eruptions look like after thousands of years, your explanations have made the landscapes I see in videos of Iceland much more understandable.

@nitawynn9538 5 месяцев назад

Sometimes geology makes my head spin! The bomb sag was really interesting. Thanks.

@NoOne-yt6yf Год назад

That is some awesome stratigraphy!

@stevew5212 Год назад

Very informative. Thank Shawn.

@hunt4redoctober628 Год назад

Another fascinating video. Really interesting story line around the formation of this rock.

@GunsandCoasters Год назад

You had me at Frito eruption! Had to do it.

@valoriel4464 Год назад

Thx for your hard work on these top-notch videos Shawn. Fascinating topic. Stay well.

@jimbarker506 Месяц назад

Thanks Shawn, you made it to Iceland OK then, and straight to work, wow what a fantastic coastline, loved the bomb sag. But that bomb that made the sag you said was more dence, but why was it on it's own, I never saw another one near, it looked like it was the only one in the cliff? Anyway keep going Shawn, your doing a great job. Jim from Dartford UK.

@TurnerRentz 7 месяцев назад

Still trying to wrap my head around the idea of that giant plume below Iceland. Noting that this video is shot from Reykjanes. Cool! Note the comment Prof. Willsey makes at 3:29 is in fact, very true. This general area is known for good surfing, if you can stand the cold and figure out where the wind swell is going.

@ninaw6708 Год назад

Another fabulous video explaining structure, I am enjoying these so much. Iceland is very expensive to visit, are you still sleeping in your car eating oatmeal? When I visited in 2017 I lived on instant noodles with a tin of vegetables.

@shawnwillsey Год назад

I've been back for several weeks. Just posting videos every few days or so (two more to go). Sleeping in rental car wasn't too bad and I slept outside one night when I knew it wouldn't rain. Oatmeal for breakfast on the backpacking stove, had ramen noodles for dinner one night. Just trying to keep cost down. So glad I went though and caught the eruption. Now, I am back teaching students.

@marinangeli3250 Год назад

Another great installment of the Iceland visit! Really liked the juxtaposition of the light colored, rounded boulders against the basalt, tuff and sand... very visually dramatic. Thanks for taking us along! Have you been to the Sand Butte Study Area just outside of Craters of the Moon? Sand Butte, another interesting Idaho example of a phreatic tuff volcano, really stands out against the rest of the COTM landscape when viewed from the air or from Google Earth. I haven't been to it in person, yet, but the surrounding landscape looks really interesting and I hope to get out there soon. Thanks again for all the Iceland episodes, very much appreciated!

@shawnwillsey Год назад

I haven’t been to Sand Butte but have visited Split Butte and did a video there.

@marinangeli3250 Год назад

@@shawnwillsey Yes, it's a great video on a COTM maar, and also gives a nice perspective of the overall scale of the area.

@ericclayton6287 Год назад

You got your fill of shield volcanology on this trip didn’t you?

@davedavis5809 Год назад

real cool professor... thanks for sharing.ohhhh did you hear about the gold coming up in the basalt in Iceland? I'm guessing that the Dyke is cutting through some gold Rich rock and bringing it up that way.... but Im no geologist I'm just a glorified rockhound

@Rachel.4644 Год назад

This is so informational, Shawn, Thank you so much. You really made the most of your trip to Iceland! (PS, today I have your Geology Underfoot in So Idaho, checking construction stone around the Boise capital buildings. 👏)

@shawnwillsey Год назад

Thanks for the kind words, Rachel. The Boise building stone vignette was probably the hardest to write. I had to do a lot of sleuthing and uncovered some really interesting stories. Enjoy!

@Rachel.4644 Год назад

@@shawnwillsey it's incredible!!! And beautiful. And a great accomplishment to figure it out and write about it. Did you have access to original plans? Amazing.

@shawnwillsey Год назад

@@Rachel.4644 I ended up digging through historical records, archives, etc. Especially for the capitol building. The perplexing thing was the "Georgia marble." It wasn't even a marble, it was a dolostone (type of sedimentary rock). Also, it wasn't from Georgia the state or Georgia the country. It turns out it was from a small town in Vermont called Georgia. Interesting!

@Rachel.4644 Год назад

@@shawnwillsey fascinating! And the serpentinite from Vermont!