Why Isn't Mount Denali a Volcano?

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Alaska has the most volcanoes out of all the US states, but researchers think they don't have enough. Here's the weird science behind looking for Alaska's volcanoes, and what we've learned about volcanism along the way.
Hosted by: Niba @NotesbyNiba (she/her)
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Sources:
www.adn.com/alaska-news/science/2024/01/27/possible-discovery-of-magma-beneath-volcano-less-part-of-alaska-warrants-closer-look/
www.uaf.edu/news/archives/news-archives-2010-2021/continued-mystery-denali-gap.php
noise.earth.utah.edu/Rabade_JGR_2023_Denali.pdf
academic.oup.com/gji/article/182/2/613/568363?login=false
agupubs.onlinelibrary.wiley.com/doi/10.1029/2001GL014088
pubs.geoscienceworld.org/gsa/geology/article-abstract/45/7/647/207873/Plateau-subduction-intraslab-seismicity-and-the?redirectedFrom=fulltext
agupubs.onlinelibrary.wiley.com/doi/pdfdirect/10.1029/1999TC001152
agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2011JB008493
www.gi.alaska.edu/alaska-science-forum/mystery-denali-gap
www.imperial.ac.uk/news/198796/study-reveals-water-deep-earth-triggers/#
www.usgs.gov/faqs/how-many-volcanoes-are-alaska
education.nationalgeographic.org/resource/denali/
www.bgs.ac.uk/discovering-geology/earth-hazards/volcanoes/how-volcanoes-form-2/
Image Sources
www.gettyimages.com/detail/video/mount-denali-at-sunset-alaska-usa-stock-footage/1360379029?adppopup=true
www.gettyimages.com/detail/photo/denali-alaska-usa-royalty-free-image/1132999090?phrase=denali&adppopup=true
commons.wikimedia.org/wiki/File:Geophone_hg.jpg#/media/File:Geophone_hg.jpg
www.gettyimages.com/detail/photo/smashed-cake-royalty-free-image/1033298372?phrase=smashed+cake&adppopup=true
www.nps.gov/media/photo/gallery-item.htm?pg=6350009&id=fef90964-1971-4b51-ad75-c7a7f0b2cf6b&gid=CAAD8BDA-D153-4793-A339-954872D6A88B
www.gettyimages.com/detail/photo/denali-at-sunrise-royalty-free-image/537762635?phrase=mt+mckinley&adppopup=true
commons.wikimedia.org/wiki/File:Cabaray.jpg#/media/File:Cabaray.jpg
d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/thumbnails/image/alaska-haz.jpg
commons.wikimedia.org/wiki/File:%D0%91%D0%B0%D0%B7%D0%B7%D0%B0%D1%80%D0%B4_%D0%9A%D1%80%D0%B8%D0%BA.jpg#/media/File:%D0%91%D0%B0%D0%B7%D0%B7%D0%B0%D1%80%D0%B4_%D0%9A%D1%80%D0%B8%D0%BA.jpg
commons.wikimedia.org/wiki/File:Flat_slab_subduction.png#/media/File:Flat_slab_subduction.png
agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017GL076583
www.gettyimages.com/detail/illustration/sign-yellow-rhombus-vector-royalty-free-illustration/1033307272?phrase=speed+bump&adppopup=true
www.gettyimages.com/detail/photo/mount-denali-or-mtmckinley-alaska-usa-royalty-free-image/1220640065?phrase=mt+mckinley&adppopup=true
commons.wikimedia.org/wiki/File:Wonder_Lake_and_Denali.jpg#/media/File:Wonder_Lake_and_Denali.jpg
www.gettyimages.com/detail/illustration/volcanic-activity-at-subduction-zones-royalty-free-illustration/1472682836?phrase=subduction&adppopup=true
www.gettyimages.com/detail/photo/alaska-topographic-relief-map-3d-render-royalty-free-image/1454442590?phrase=alaska&adppopup=true

Опубликовано:

23 апр 2024

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Комментарии : 411

@ssl3546 24 дня назад

I like this lady, she speaks clearly and dynamically.

@Trip_Ts 24 дня назад

it was kinda hard for me to understand, her voices resonated or something but I did enjoy watching.

@fumfering 24 дня назад

@@Trip_Ts Interesting--maybe it's because the tone of her voice is rich and melodic; it might make some speakers vibrate.

@JAT985 24 дня назад

@@Trip_Tsi found understanding her voice is dependent on speaker quality. Speakers that arent meant for voices muffle her.

@icostaticrebound6007 24 дня назад

i like this lady cause shes pretty

@Couchintheclouds 24 дня назад

I like the dynamic eye brow movements

@emyra_3293 24 дня назад

Niba is an amazing presenter! I hope we get to hear more from her in the future!

@theanyktos 24 дня назад

I really love that you're bringing in other science communicators

@chumbucketjones9761 24 дня назад

'communicators'. that's a new one.

@bellenesatan 24 дня назад

@@chumbucketjones9761RU-vid shows previous comments you've made on this channel. You're really a unique type of weird, yeah?

@PrinceAndTheHarper 24 дня назад

agreed, Niba gave a great explanation!

@100GTAGUY 24 дня назад

@@bellenesatan even if they are a troll you're going to have to do better than stooping to falacies man, for science.

@martinstoyanov5180 23 дня назад

@@chumbucketjones9761 seasoned scishow hater is insane 😂😂😂😂

@bobpickering1 24 дня назад

Great presentation. I understand that the natives named the mountain Denali, meaning the high one. The state of Alaska recognized the native name, and mountaineers generally called it Denali. For a long time, the federal government called it Mt. McKinley, but they eventually recognized Denali, making it unanimous. It took two attempts, but I’ve been on the summit of Denali. Until today, I had never heard anyone call it MOUNT Denali.

@TiredMomma 24 дня назад

My grandfather, who served in Coast Guard, including for Juneau, had it in his Will to have his ashes be spread across Mt. McKinley, years before they finally agreed it should just stay as Denali. The area of Denali is also where he passed away, on his last family trip with us. It has always made me wonder if he knew he was dying and planned the trip so he could be there. *The US Coast Guard said they won't spread his ashes over the mountain.

@skyem5250 24 дня назад

I've heard both.

@DysClaimer 24 дня назад

I lived in Alaska a long time and I never heard anyone say “Mount” Denali. It’s just Denali.

@TheSpiritombsableye 24 дня назад

All major mountains start with the word "Mount" on Earth.

@DysClaimer 24 дня назад

@@TheSpiritombsableye this is not even remotely true. Look up the names of the 20 tallest mountains in the world. Mt. Everest is literally the only one that routinely uses “mount” in its name. And that’s only cause the English version became more commonly used than the local name.

@101rotarypower 23 дня назад

Nailed it with this presenter, so natural, enthusiastic, and get a feeling the content is understood rather than just reading off a script, hope to see this new presenter as a regular on the channel!

@akpsyche1299 24 дня назад

As someone from Alaska, it’s always nice to see an episode focusing on something from my home state.

@mandygershon8603 24 дня назад

Indeed; it's nice to know I'm pretty much safe from being Pompeii'd. ;)

@callmeshaggy5166 24 дня назад

As someone from Alaska, is or was the whole Denali/McKinley issue actually a thing up there? Because as someone from New Jersey, I was fine with it, if not totally indifferent.

@akpsyche1299 24 дня назад

@@callmeshaggy5166 nope. McKinley never even set foot in Alaska. As far as I know, most Alaskans are in favor of using the native name. It feels more Alaskan.

@mandygershon8603 24 дня назад

@@callmeshaggy5166 It wasn't a triggering issue, if that's what you're asking. It just seemed more appropriate to call it Mt. Denali.

@xitheris1758 24 дня назад

I'm not an Alaskan, but I've always thought Denali was a much more timeless and evocative name for such a formidable mountain. McKinley was a formidable President, but no man can be compared to Denali.

@jessebob325 24 дня назад

Niba is a delightful presentator. She has a clear and easy to understand voice (to my old ears at least). The information presented was very interesting indeed. Cheers!

@maiaallman4635 24 дня назад

Excellent presenter!

@SirHeinzbond 24 дня назад

wonderful voice... not to fast ( not natural english speaker here) and also interesting content...

@Psycro 24 дня назад

Not really.

@lindareed8265 24 дня назад

I love this host's voice and mannerisms. More from her!

@NotesByNiba 23 дня назад

Aw thank you so much!

@PlayNowWorkLater 24 дня назад

Fun fact. There is some brilliant research by Karin Sigloch whose Baja-BC model has the Yakitat plate you mention as subducting below Denali, that it once was connected to another plate that subducted below Washington State. When they were connected it was part of a sea floor spreading, similar to the mid Atlantic sea floor spreading. Also similar to the mid Atlantic, with Iceland sitting on top of that ridge (and hotspot) there was a similar large island called Siletzia. Eventually it split in half with the sea floor spreading, half of it accreted to Washington, and the other half became Yakitat and made its way to Alaska and started subducting. The Interesting connection to both these places is they BOTH HAVE VOLCANIC GAPS. There has to be a connection there! Most of what I’ve learned about Baja-BC, Siletzia and Yakitat has been from Nick Zentner’s RU-vid channel, online classes, lectures and series. I’m fascinated by the idea that this island called Siletzia, which essentially was a large collection of Basaltic Lava flows, like Iceland, could be responsible for blocking volcanoes from forming. Very interesting correlation between Washington and Alaska. Gaps between volcanoes.

@djenebasidibe468 24 дня назад

Another Zentnerd here. LOL You probably also guessed that they might be talking about the Yakitat accreting before they even mentioned it in above vid. :D

@PlayNowWorkLater 24 дня назад

@@djenebasidibe468 indeed I did! Hahaha. We’re starting to take over the scene with Nick as our Pied Piper

@djenebasidibe468 23 дня назад

@@PlayNowWorkLater lol

@Dragrath1 18 дней назад

Hi fellow Znetnerd, I think you may have accidently written the wrong Washington, with the "DC" likely having been meant to be BC British Columbia? Nick doesn't live in DC and there hasn't been subduction in Washington DC for hundreds of millions of years. Anyways Siletzia is fascinating with the interesting thing about the seismic tomography showing that the ridge like geometry of the upper mantle still largely preserves a Mid Ocean Ridge configuration which connects to the East Pacific Rise. Its so clear in imagery that it is shocking and also perfectly outlines the Basin and Range + Colorado plateau.

@PlayNowWorkLater 18 дней назад

@@Dragrath1 I see that now. I didn’t do that on purpose. I am well aware he lives in the state of Washington. Been there a few times. I’m a west coaster myself. But in Canada. Cheers for the heads up. Edited above. No DC anymore. Hahaha. Gotta love auto fill.

@acetophenone820 24 дня назад

Thanks Niba!

@bluestormpony 24 дня назад

i know its a bit of topic but those earrings are amazing!

@UKfeath 24 дня назад

agreed! i want!

@beingsneaky 24 дня назад

Ikr? Was my first thought, then her.. beautiful, then her clothing, beautiful as well.

@DoctorX17 24 дня назад

Hi new person! Welcome to SciShow :)

@LatenightLyle 23 дня назад

Niba is great. Perfectly fits in with the style of the SciShow family. Hope we see more!

@davesatxify 24 дня назад

nice to 'meet' you Niba. great presentation on something new. I learned a lot and found it quite interesting

@morenosandiego 24 дня назад

This lady is really amazing at communicating

@NotesByNiba 23 дня назад

Thank you so much!

@MichaelS-pr9qn 24 дня назад

Welcome Niba!

@MrMudbill 24 дня назад

What a pleasant voice to listen to

@ShintarufromdA 24 дня назад

That surprise second camera angle was fun. XD

@conwaymj88 24 дня назад

And not overused which I've seen some do to the detriment of the content flow

@quantum2940 23 дня назад

Yes it was very well done!

@vcostor 24 дня назад

Such a great calming voice Fell asleep twice watching this video.

@maximilianmorse9697 24 дня назад

Wow, a second camera angle, how fancy

@Corqii 24 дня назад

Niba your fashion is 🔥

@conwaymj88 24 дня назад

Niba is the new powerhouse of the cell

@NotesByNiba 23 дня назад

this made me laugh so hard, thank you!

@Larixlaricina 24 дня назад

Welcome, Niba!

@NotesByNiba 23 дня назад

Glad to be here :)

@musewinter9369 24 дня назад

Girl you are a phenomenal science communicator. -alaska checking in-

@osmia 24 дня назад

Welcome Niba :)

@Orchids.and.Endlers 24 дня назад

Niba has a great presentation and articulates herself well 👍🙏🏻

@hamiljohn 24 дня назад

Welcome to Sci Show!

@NotesByNiba 23 дня назад

Glad to be here!

@spamsausage 24 дня назад

I love her! She’s such an amazing presenter? Orator? Professional talker? Idk what it is. She’s just fun to listen to

@NotesByNiba 23 дня назад

Thank you so much! I'm so happy to be here :D

@Gizathecat2 23 дня назад

I didn’t find out that Denali wasn’t a volcano until very recently, and now I know why. Thank you SciShow!

@melodyszadkowski5256 24 дня назад

This is my new favorite SciShow ep. It answers some questions for me.

@summer-west 17 дней назад

Me too. “Who is the cutest scishow host?” ❤

@danajoseph6705 7 дней назад

She is quite beautiful.

@annasfischer 24 дня назад

because it's passover: "why is this area of the subduction zone not like all the other areas of the subduction zone?"

@PrinceAndTheHarper 24 дня назад

same thing went through my head

@raeperonneau4941 24 дня назад

😂

@Hooch420 24 дня назад

You have to rewatch it then she tells you

@annasfischer 24 дня назад

@@Hooch420 I know. It's a joke about part of the passover obervance. On the first night of passover, as part of seder, we ritually ask the question, "why is this night different from all other nights?" She asked the question, roughly, "why is this part of the subduction zone not acting like the rest of the subduction zone," before then answering that question, and that question was enough like the format of the passover question, that since passover started last night, it reminded me of it and I put it in the format of that question as a joke.

@gab.lab.martins 24 дня назад

Because this one doesn’t rise. It’s flat and thin. חג פסח שמח!

@blazethealaskanmalamute4633 24 дня назад

I spent my grade school years in Yakutat❤back in the 80’s-90’s! Best childhood anyone could imagine! My father was a meteorologist there ❤ the beach life was the best! Also learned many life skills not taught in most main stream schools! Thank you Y.E.S.! (Yakutat Elementary School)!

@amcdowell1493 24 дня назад

Good presentation. Welcome aboard, Niba.

@DJB01 24 дня назад

Niba in long-form scishow content? Nice. Love the way she presents.

@NotesByNiba 23 дня назад

So glad you enjoyed!

@SnarkNSass 24 дня назад

Can Dyslexia be a late onset thing? Probably not. Coulda swore it said Mount Denial 😂

@andyjay729 24 дня назад

Denial's not just a river in Alaska. Or a mountain in Egypt.

@SnarkNSass 24 дня назад

@@andyjay729 😆😆😆😆🏆

@chumbucketjones9761 24 дня назад

It's a symptom of our mental rewiring by the A.I.

@entropybentwhistle 24 дня назад

Could be Denial for the people who keep saying Mt. McKinley

@frattman 24 дня назад

Hi Niba, welcome! Great first video :)

@PalaeoJoe 24 дня назад

Yay! New host person!

@just_kos99 24 дня назад

I thought it might be similar to the Olympic Mountains in Washington State, which are on the Olympic Peninsula. This area was the last exotic terrane to attach to North America, called Siletzia. So it's the Pacific Ocean with the East Pacific Rise and Juan de Fuca plate, Olympic Mountains, Puget Sound and lowlands (which includes Seattle) then the volcanic Cascades Mountains. The Olys are what's called a "fore-arc" and have never been volcanic.

@metamorphiczeolite 24 дня назад

Great video! Always happy to see geology content.

@kazempire5553 24 дня назад

I like these new sets and styles of presentation. Keep it up.

@kaylatellefsen9438 3 дня назад

We want more of Niba!!! She’s so fun to watch and easy on the ears!!!!

@Hooch420 24 дня назад

Very easy to understand , yes excellent presentation

@Jsmith2024 24 дня назад

I really did like this video. It;s a good length, the presenter does a great job and the science is intelligible to me (I was in college 50 years ago, so I'm rusty).

@ursaltydog 24 дня назад

Nice voice. Not irritating at all. Thank you for a good presentation..

@jokerzyo 24 дня назад

Great new host! Welcome!

@joshborchardt5050 19 дней назад

Perfect pitch, pace, and tone. Easy to listen. Bravo!

@icollectstories5702 24 дня назад

Perhaps the material of the Yakutat platelet melts at a higher temperature than the underlying Pacific plate, so it takes a long time for the heat carried in the Pacific plate magma to melt through to the surface. This should result in a thinning of the Yakutat plate over time and it would be thinnest near volcanoes.

@saschamaj 22 дня назад

Instant crush! Oh yeah, and the stuff about the magma was interesting as well. ☺️

@semaj_5022 24 дня назад

That was really interesting! I always wondered why, with all the volcanoes in Alaska, the tallest mountain there wasn't also one. I'd love to see Denali in person one day. Also I really enjoyed Niba's presentation! I hope we can see more of her soon.

@akakscase 23 дня назад

Well when you do get up to Alaska, if you come up in the summer I recommend flying into Anchorage, renting a car or RV and driving up the Parks Highway. About an hour and a half out of Anchorage, you'll start seeing a prominent mountain peaking out from above the trees. That is Denali, and you'll know you are only about a 2 and 1/2 hour drive from it. Denali Park is about a 4 hour drive from Anchorage in good weather and about a 2 hour drive from Fairbanks. But the drive from Anchorage is much more scenic in the summer. In the winter it is dark most the time so you won't see much anyways.

@semaj_5022 22 дня назад

@@akakscase Thanks for the tip! If there's campgrounds along the way I think taking an RV would be super cool.

@lasertheboy 23 дня назад

Woahh it's Niba!!! amazing video!

@emmanuelsanchez9303 24 дня назад

I definitely dig the new background/presentation format 🙂

@quirkemovez 24 дня назад

I like this lady, she's a great orator

@megatronjenkins2473 24 дня назад

An excellent episode about my home state!!!

@modhusudhon2778 23 дня назад

Hi Niba! At last found you on IG & FB!!

@poopymcface9792 24 дня назад

The merging of SciShow and NotesbyNiba. Well done!

@_maxgray 22 дня назад

Heyy it's a long form video with Niba, this is great!

@mattbreitenbach2512 17 дней назад

Great presentation. Niba is an excellent communicator!

@General12th 24 дня назад

Hi Niba! Denali is such a cool word.

@LivinRob 24 дня назад

Every other dog is named that here....

@rithikamadhusha1708 24 дня назад

@LivinRob so you could say Denali isn't just a mountain in Alaska?

@silviavalentine3812 24 дня назад

0:58 this piece right here was so nicely written! Very simple and direct.

@racecarrik 24 дня назад

Best guest presenter for sure

@NotesByNiba 23 дня назад

thank you!

@tiffanymarie9750 24 дня назад

I see scishow has entered it's 90s background era.

@HeavyForge 23 дня назад

Born and raised in Alaska, live in Anchorage and I remember when Mt. Spurr erupted in 92.

@dvoiceotruth 24 дня назад

Excellent presentation! Had never heard enough about Mt. Denali.

@stevenperry9762 20 дней назад

What a wonderful teacher, Niba is

@connorjoyce98 24 дня назад

Thanks!

@catylotl 24 дня назад

love learning about my home state❤ i grew up in sitka with mt edgecumbe and miss the mountains where i live now :'(

@davidlist7507 23 дня назад

Niba is a beautiful and excellent host, thank you Niba for doing a very good presentation, Peace!

@NotesByNiba 23 дня назад

thank you!

@dapeach06 21 день назад

Niba is great! I love her presentation style, and her fashion sense too!!

@zeratullotus2790 23 дня назад

Niba did well. I liked the camera play. Now I want to read the science fiction novel "After Denali Erupted" or see the B movie depicting the delve into the caves under Denali... "The Denali Finale"

@NotesByNiba 23 дня назад

Thank you!

@kla_613 23 дня назад

Oh I love this host! Interesting theories!

@chumbucketjones9761 24 дня назад

That background reminds me of something that may or may not have originally aired in the 1990's.

@psycho5946 18 дней назад

I like this lady, its like she talking to you directly like a curious friend

@fabiola4166 24 дня назад

I'm loving this video!!!!

@PikaPetey 24 дня назад

Bwaaahh? New host?? Awesome

@simix6915 24 дня назад

Denali is also mainly composed of granite, and granite rock formations are the remains of large magma chambers, like the Yosemite national park peaks

@TiggerIsMyCat 24 дня назад

So, basically this area has going on the same thing that happened with the farralon plate back in the cretaceous and eocene, and eventually caused the ignimbrite flare up in the miocene? So eventually there's going to be another time of explosive eruptions there and pyroclastic flows and massive ash deposits?

@andyjay729 24 дня назад

A flat slab may be the reason why there aren't any volcanoes in California south of Lassen Peak. The San Andreas Fault was once a subduction zone, and there's still relatively recent evidence of volcanic activity in CA as far south as San Luis Obispo. The subducted plate in central CA was the Farallon Plate (obviously named after the Farallon Islands off San Francisco), and the partially melted remnants of the plate may have bumped against the bottom of the New Madrid Fault in southern Missouri (about due east of San Francisco) and caused those enormous intraplate quakes. I'm just flying by the seat of my pants here because I'm not a geologist, but I wonder if shallow-slab subduction is also responsible for the "Big Bend" in the San Andreas, which helped form the east-west running Transverse Ranges in Southern California (most mountain ranges in CA and the Americas run north-south) as well as the long east-west jut in the CA coast from Santa Monica to Point Conception). Maybe similar activity was also responsible for the east-west jog in Japan from near Tokyo all the way to the west end of the main island of Honshu. Perhaps when a subduction angle is particularly shallow, a subduction zone can turn into a strike-slip fault, which is what the San Andreas is today.

@souravjaiswal-jr4bj 24 дня назад

If the pressure keeps building, it can become a supervolcano like Toba.

@nBasedAce 24 дня назад

Does anyone else keep thinking about pizza everytime crust is mentioned in this video?

@mcdade7489 24 дня назад

Nope. Thinking about quiche.

@yahm0n 24 дня назад

With magma in a large area being unable to get to the surface, this sounds like the site of a future super volcano.

@dapeach06 21 день назад

Maybe in millions of years, yeah.

@greatestaxolotl4933 22 дня назад

bro is just casually wearing stays 🔥❤️ love the style

@idratherbe_inspace5430 24 дня назад

Her outfit is amazing!!! Everything about it is perfectly coordinated and cool 🤩 I just might have to make an outfit inspired by hers

@NotesByNiba 23 дня назад

Thank you! I wanted to make the visuals interesting :) More of my fashion and science over at ru-vid.com

@idratherbe_inspace5430 23 дня назад

@@NotesByNiba I'm intrigued! Science and beauty topics? Two things I enjoy learning about. Thank you! Edit: I see plants in your videos, that's it I'm sold 😆

@NotesByNiba 22 дня назад

@@idratherbe_inspace5430 yay! That is so kind of you!

@lucidmoses 24 дня назад

Hey! It's Tangent Cam!

@mandygershon8603 24 дня назад

So, as the glaciers melt here in Alaska, the land should also rise because the weight is lifted. I imagine that just provides for more room for the magma to spread out and help keep volcanoes from forming as well. Yes or no?

@tuunaes 24 дня назад

If glacier is directly on top of volcanic area removing that weight can increase risk of eruption. Less weight above makes it easier for magma to start pushing crust upwards opening cracks into it and drop in external pressure can allow dissolved gasses to start expanding. Though glaciers of individual mountain aren't that massive... Unlike continental glacier hiding well over 100 volcanoes in western Antarctica.

@_andrewvia 24 дня назад

Niba is an awesome narrator. She reminds me of Michael, whom I miss.

@chrissscottt 24 дня назад

Like the new presenter. Very professional.

@cmaven4762 24 дня назад

Good stuff! 👍👍

@andrewbecker1013 23 дня назад

Fun fact, the Yakutat terrane is a part of a larger terrane -- the rest of it makes up the western third of Oregon and Washington, but the Yakutat portion was sheared off over millions of years of San Andreas fault style northward motion and sent up to collide with Alaska. Alaska is mostly a big rubble pile of accreted terranes from farther south that were originally Japan-like island chains off North America's west coast.