Why Isn't Mount Denali a Volcano?

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/scien...
www.uaf.edu/news/archives/new...
noise.earth.utah.edu/Rabade_J...
academic.oup.com/gji/article/...
agupubs.onlinelibrary.wiley.c...
pubs.geoscienceworld.org/gsa/...
agupubs.onlinelibrary.wiley.c...
agupubs.onlinelibrary.wiley.c...
www.gi.alaska.edu/alaska-scie...
www.imperial.ac.uk/news/19879...
www.usgs.gov/faqs/how-many-vo...
education.nationalgeographic....
www.bgs.ac.uk/discovering-geo...
Image Sources
www.gettyimages.com/detail/vi...
www.gettyimages.com/detail/ph...
commons.wikimedia.org/wiki/Fi...
www.gettyimages.com/detail/ph...
www.nps.gov/media/photo/galle...
www.gettyimages.com/detail/ph...
commons.wikimedia.org/wiki/Fi...
d9-wret.s3.us-west-2.amazonaw...
commons.wikimedia.org/wiki/Fi...
commons.wikimedia.org/wiki/Fi...
agupubs.onlinelibrary.wiley.c...
www.gettyimages.com/detail/il...
www.gettyimages.com/detail/ph...
commons.wikimedia.org/wiki/Fi...
www.gettyimages.com/detail/il...
www.gettyimages.com/detail/ph...

Пікірлер: 416

  • @ssl3546
    @ssl3546Ай бұрын

    I like this lady, she speaks clearly and dynamically.

  • @Trip_Ts

    @Trip_Ts

    Ай бұрын

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

  • @fumfering

    @fumfering

    Ай бұрын

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

  • @JAT985

    @JAT985

    Ай бұрын

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

  • @icostaticrebound6007

    @icostaticrebound6007

    Ай бұрын

    i like this lady cause shes pretty

  • @Couchintheclouds

    @Couchintheclouds

    Ай бұрын

    I like the dynamic eye brow movements

  • @theanyktos
    @theanyktosАй бұрын

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

  • @chumbucketjones9761

    @chumbucketjones9761

    Ай бұрын

    'communicators'. that's a new one.

  • @bellenesatan

    @bellenesatan

    Ай бұрын

    ​@@chumbucketjones9761KZread shows previous comments you've made on this channel. You're really a unique type of weird, yeah?

  • @PrinceAndTheHarper

    @PrinceAndTheHarper

    Ай бұрын

    agreed, Niba gave a great explanation!

  • @100GTAGUY

    @100GTAGUY

    Ай бұрын

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

  • @martinstoyanov5180

    @martinstoyanov5180

    Ай бұрын

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

  • @emyra_3293
    @emyra_3293Ай бұрын

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

  • @101rotarypower
    @101rotarypowerАй бұрын

    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!

  • @jessebob325
    @jessebob325Ай бұрын

    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!

  • @akpsyche1299
    @akpsyche1299Ай бұрын

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

  • @mandygershon8603

    @mandygershon8603

    Ай бұрын

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

  • @callmeshaggy5166

    @callmeshaggy5166

    Ай бұрын

    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

    @akpsyche1299

    Ай бұрын

    @@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

    @mandygershon8603

    Ай бұрын

    @@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

    @xitheris1758

    Ай бұрын

    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.

  • @maiaallman4635
    @maiaallman4635Ай бұрын

    Excellent presenter!

  • @SirHeinzbond

    @SirHeinzbond

    Ай бұрын

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

  • @Psycro

    @Psycro

    Ай бұрын

    Not really.

  • @bobpickering1
    @bobpickering1Ай бұрын

    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

    @TiredMomma

    Ай бұрын

    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

    @skyem5250

    Ай бұрын

    I've heard both.

  • @DysClaimer

    @DysClaimer

    Ай бұрын

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

  • @TheSpiritombsableye

    @TheSpiritombsableye

    Ай бұрын

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

  • @DysClaimer

    @DysClaimer

    Ай бұрын

    @@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.

  • @acetophenone820
    @acetophenone820Ай бұрын

    Thanks Niba!

  • @PlayNowWorkLater
    @PlayNowWorkLaterАй бұрын

    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 KZread 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

    @djenebasidibe468

    Ай бұрын

    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

    @PlayNowWorkLater

    Ай бұрын

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

  • @djenebasidibe468

    @djenebasidibe468

    Ай бұрын

    @@PlayNowWorkLater lol

  • @Dragrath1

    @Dragrath1

    Ай бұрын

    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

    @PlayNowWorkLater

    Ай бұрын

    @@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.

  • @lindareed8265
    @lindareed8265Ай бұрын

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

  • @NotesByNiba

    @NotesByNiba

    Ай бұрын

    Aw thank you so much!

  • @vcostor
    @vcostorАй бұрын

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

  • @morenosandiego
    @morenosandiegoАй бұрын

    This lady is really amazing at communicating

  • @NotesByNiba

    @NotesByNiba

    Ай бұрын

    Thank you so much!

  • @MichaelS-pr9qn
    @MichaelS-pr9qnАй бұрын

    Welcome Niba!

  • @LatenightLyle
    @LatenightLyleАй бұрын

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

  • @ShintarufromdA
    @ShintarufromdAАй бұрын

    That surprise second camera angle was fun. XD

  • @conwaymj88

    @conwaymj88

    Ай бұрын

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

  • @quantum2940

    @quantum2940

    Ай бұрын

    Yes it was very well done!

  • @bluestormpony
    @bluestormponyАй бұрын

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

  • @UKfeath

    @UKfeath

    Ай бұрын

    agreed! i want!

  • @beingsneaky

    @beingsneaky

    Ай бұрын

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

  • @davesatxify
    @davesatxifyАй бұрын

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

  • @MrMudbill
    @MrMudbillАй бұрын

    What a pleasant voice to listen to

  • @Orchids.and.Endlers
    @Orchids.and.EndlersАй бұрын

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

  • @amcdowell1493
    @amcdowell1493Ай бұрын

    Good presentation. Welcome aboard, Niba.

  • @osmia
    @osmiaАй бұрын

    Welcome Niba :)

  • @DoctorX17
    @DoctorX17Ай бұрын

    Hi new person! Welcome to SciShow :)

  • @metamorphiczeolite
    @metamorphiczeoliteАй бұрын

    Great video! Always happy to see geology content.

  • @melodyszadkowski5256
    @melodyszadkowski5256Ай бұрын

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

  • @summer-west

    @summer-west

    Ай бұрын

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

  • @danajoseph6705

    @danajoseph6705

    20 күн бұрын

    She is quite beautiful.

  • @musewinter9369
    @musewinter9369Ай бұрын

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

  • @kaylatellefsen9438
    @kaylatellefsen943816 күн бұрын

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

  • @glasslakes
    @glasslakesАй бұрын

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

  • @Jsmith2024
    @Jsmith2024Ай бұрын

    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).

  • @Corqii
    @CorqiiАй бұрын

    Niba your fashion is 🔥

  • @Larixlaricina
    @LarixlaricinaАй бұрын

    Welcome, Niba!

  • @NotesByNiba

    @NotesByNiba

    Ай бұрын

    Glad to be here :)

  • @Hooch420
    @Hooch420Ай бұрын

    Very easy to understand , yes excellent presentation

  • @frattman
    @frattmanАй бұрын

    Hi Niba, welcome! Great first video :)

  • @DJB01
    @DJB01Ай бұрын

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

  • @NotesByNiba

    @NotesByNiba

    Ай бұрын

    So glad you enjoyed!

  • @joshborchardt5050
    @joshborchardt5050Ай бұрын

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

  • @racecarrik
    @racecarrikАй бұрын

    Best guest presenter for sure

  • @NotesByNiba

    @NotesByNiba

    Ай бұрын

    thank you!

  • @conwaymj88
    @conwaymj88Ай бұрын

    Niba is the new powerhouse of the cell

  • @NotesByNiba

    @NotesByNiba

    Ай бұрын

    this made me laugh so hard, thank you!

  • @maximilianmorse9697
    @maximilianmorse9697Ай бұрын

    Wow, a second camera angle, how fancy

  • @spamsausage
    @spamsausageАй бұрын

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

  • @NotesByNiba

    @NotesByNiba

    Ай бұрын

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

  • @lasertheboy
    @lasertheboyАй бұрын

    Woahh it's Niba!!! amazing video!

  • @quirkemovez
    @quirkemovezАй бұрын

    I like this lady, she's a great orator

  • @jokerzyo
    @jokerzyoАй бұрын

    Great new host! Welcome!

  • @Gizathecat2
    @Gizathecat2Ай бұрын

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

  • @zeratullotus2790
    @zeratullotus2790Ай бұрын

    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

    @NotesByNiba

    Ай бұрын

    Thank you!

  • @PalaeoJoe
    @PalaeoJoeАй бұрын

    Yay! New host person!

  • @poopymcface9792
    @poopymcface9792Ай бұрын

    The merging of SciShow and NotesbyNiba. Well done!

  • @saschamaj
    @saschamajАй бұрын

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

  • @blazethealaskanmalamute4633
    @blazethealaskanmalamute4633Ай бұрын

    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)!

  • @davidlist7507
    @davidlist7507Ай бұрын

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

  • @NotesByNiba

    @NotesByNiba

    Ай бұрын

    thank you!

  • @just_kos99
    @just_kos99Ай бұрын

    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.

  • @dvoiceotruth
    @dvoiceotruthАй бұрын

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

  • @stevenperry9762
    @stevenperry9762Ай бұрын

    What a wonderful teacher, Niba is

  • @emmanuelsanchez9303
    @emmanuelsanchez9303Ай бұрын

    I definitely dig the new background/presentation format 🙂

  • @_maxgray
    @_maxgrayАй бұрын

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

  • @megatronjenkins2473
    @megatronjenkins2473Ай бұрын

    An excellent episode about my home state!!!

  • @dapeach06
    @dapeach06Ай бұрын

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

  • @ursaltydog
    @ursaltydogАй бұрын

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

  • @mattbreitenbach2512
    @mattbreitenbach2512Ай бұрын

    Great presentation. Niba is an excellent communicator!

  • @semaj_5022
    @semaj_5022Ай бұрын

    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

    @akakscase

    Ай бұрын

    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

    @semaj_5022

    Ай бұрын

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

  • @hamiljohn
    @hamiljohnАй бұрын

    Welcome to Sci Show!

  • @NotesByNiba

    @NotesByNiba

    Ай бұрын

    Glad to be here!

  • @SnarkNSass
    @SnarkNSassАй бұрын

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

  • @andyjay729

    @andyjay729

    Ай бұрын

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

  • @SnarkNSass

    @SnarkNSass

    Ай бұрын

    @@andyjay729 😆😆😆😆🏆

  • @chumbucketjones9761

    @chumbucketjones9761

    Ай бұрын

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

  • @entropybentwhistle

    @entropybentwhistle

    Ай бұрын

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

  • @HeavyForge
    @HeavyForgeАй бұрын

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

  • @connorjoyce98
    @connorjoyce98Ай бұрын

    Thanks!

  • @annasfischer
    @annasfischerАй бұрын

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

  • @PrinceAndTheHarper

    @PrinceAndTheHarper

    Ай бұрын

    same thing went through my head

  • @raeperonneau4941

    @raeperonneau4941

    Ай бұрын

    😂

  • @Hooch420

    @Hooch420

    Ай бұрын

    You have to rewatch it then she tells you

  • @annasfischer

    @annasfischer

    Ай бұрын

    @@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

    @gab.lab.martins

    Ай бұрын

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

  • @psycho5946
    @psycho5946Ай бұрын

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

  • @modhusudhon2778
    @modhusudhon2778Ай бұрын

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

  • @idratherbe_inspace5430
    @idratherbe_inspace5430Ай бұрын

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

  • @NotesByNiba

    @NotesByNiba

    Ай бұрын

    Thank you! I wanted to make the visuals interesting :) More of my fashion and science over at kzread.info

  • @idratherbe_inspace5430

    @idratherbe_inspace5430

    Ай бұрын

    @@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

    @NotesByNiba

    Ай бұрын

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

  • @fabiola4166
    @fabiola4166Ай бұрын

    I'm loving this video!!!!

  • @General12th
    @General12thАй бұрын

    Hi Niba! Denali is such a cool word.

  • @LivinRob

    @LivinRob

    Ай бұрын

    Every other dog is named that here....

  • @rithikamadhusha1708

    @rithikamadhusha1708

    Ай бұрын

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

  • @tiffanymarie9750
    @tiffanymarie9750Ай бұрын

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

  • @catylotl
    @catylotlАй бұрын

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

  • @teddymanguerra
    @teddymanguerraАй бұрын

    Niba rocks! ❤

  • @icollectstories5702
    @icollectstories5702Ай бұрын

    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.

  • @chrissscottt
    @chrissscotttАй бұрын

    Like the new presenter. Very professional.

  • @silviavalentine3812
    @silviavalentine3812Ай бұрын

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

  • @kla_613
    @kla_613Ай бұрын

    Oh I love this host! Interesting theories!

  • @chumbucketjones9761
    @chumbucketjones9761Ай бұрын

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

  • @simix6915
    @simix6915Ай бұрын

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

  • @lucidmoses
    @lucidmosesАй бұрын

    Hey! It's Tangent Cam!

  • @winterwatson6437
    @winterwatson6437Ай бұрын

    hi niba!!

  • @NotesByNiba

    @NotesByNiba

    Ай бұрын

    hi there! excited to be here :)

  • @_andrewvia
    @_andrewviaАй бұрын

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

  • @douglaswims5763
    @douglaswims5763Ай бұрын

    Cute and smart. Great combo

  • @greatestaxolotl4933
    @greatestaxolotl4933Ай бұрын

    bro is just casually wearing stays 🔥❤️ love the style

  • @sunny_muffins
    @sunny_muffinsАй бұрын

    One of the best hosts ever!

  • @souravjaiswal-jr4bj
    @souravjaiswal-jr4bjАй бұрын

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

  • @andrewbecker1013
    @andrewbecker1013Ай бұрын

    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.

  • @andyjay729
    @andyjay729Ай бұрын

    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.

  • @CorCorAK
    @CorCorAKАй бұрын

    Im from Alaska!! Great video

  • @nBasedAce
    @nBasedAceАй бұрын

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

  • @mcdade7489

    @mcdade7489

    Ай бұрын

    Nope. Thinking about quiche.

  • @yahm0n
    @yahm0nАй бұрын

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

  • @dapeach06

    @dapeach06

    Ай бұрын

    Maybe in millions of years, yeah.

  • @cmaven4762
    @cmaven4762Ай бұрын

    Good stuff! 👍👍

  • @IanBourneMusic
    @IanBourneMusicАй бұрын

    Cool video

  • @TiggerIsMyCat
    @TiggerIsMyCatАй бұрын

    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?

  • @crains8087
    @crains8087Ай бұрын

    "the science behind looking for Alaska's volcanoes" hehe 😄😄😄

  • @IsabelleShae
    @IsabelleShaeАй бұрын

    Welcome to scishow!

  • @LThorsen78
    @LThorsen78Ай бұрын

    Amazing content about a often confused bit of geology. Also glad to see young people dressing like 1975 Stevie Nicks again.

  • @Bigandrewm
    @BigandrewmАй бұрын

    When the conditions for the magma trapped "puddle" do change in the far future, does this mean that the Denali area is a potential major flood basalt eruption area?

  • @uplink-on-yt
    @uplink-on-ytАй бұрын

    Got that SciShow cadence down to a T.

  • @mandygershon8603
    @mandygershon8603Ай бұрын

    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

    @tuunaes

    Ай бұрын

    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.

  • @fightfanian
    @fightfanianАй бұрын

    She did well, Bravo