Why Isn't Mount Denali a Volcano?
HTML-код
- Опубликовано: 22 апр 2024
- 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)
----------
Support SciShow by becoming a patron on Patreon: / scishow
----------
Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Adam Brainard, Alex Hackman, Ash, Benjamin Carleski, Bryan Cloer, charles george, Chris Mackey, Chris Peters, Christoph Schwanke, Christopher R Boucher, DrakoEsper, Eric Jensen, Friso, Garrett Galloway, Harrison Mills, J. Copen, Jaap Westera, Jason A Saslow, Jeffrey Mckishen, Jeremy Mattern, Kenny Wilson, Kevin Bealer, Kevin Knupp, Lyndsay Brown, Matt Curls, Michelle Dove, Piya Shedden, Rizwan Kassim, Sam Lutfi
----------
Looking for SciShow elsewhere on the internet?
SciShow Tangents Podcast: scishow-tangents.simplecast.com/
TikTok: / scishow
Twitter: / scishow
Instagram: / thescishow
Facebook: / scishow
#SciShow #science #education #learning #complexly
----------
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...
I like this lady, she speaks clearly and dynamically.
it was kinda hard for me to understand, her voices resonated or something but I did enjoy watching.
@@Trip_Ts Interesting--maybe it's because the tone of her voice is rich and melodic; it might make some speakers vibrate.
@@Trip_Tsi found understanding her voice is dependent on speaker quality. Speakers that arent meant for voices muffle her.
i like this lady cause shes pretty
I like the dynamic eye brow movements
I really love that you're bringing in other science communicators
'communicators'. that's a new one.
@@chumbucketjones9761RUclips shows previous comments you've made on this channel. You're really a unique type of weird, yeah?
agreed, Niba gave a great explanation!
@@bellenesatan even if they are a troll you're going to have to do better than stooping to falacies man, for science.
@@chumbucketjones9761 seasoned scishow hater is insane 😂😂😂😂
Niba is an amazing presenter! I hope we get to hear more from her in the future!
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.
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.
I've heard both.
I lived in Alaska a long time and I never heard anyone say “Mount” Denali. It’s just Denali.
All major mountains start with the word "Mount" on Earth.
@@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.
As someone from Alaska, it’s always nice to see an episode focusing on something from my home state.
Indeed; it's nice to know I'm pretty much safe from being Pompeii'd. ;)
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.
@@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.
@@callmeshaggy5166 It wasn't a triggering issue, if that's what you're asking. It just seemed more appropriate to call it Mt. Denali.
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.
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!
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!
Excellent presenter!
wonderful voice... not to fast ( not natural english speaker here) and also interesting content...
Not really.
I love this host's voice and mannerisms. More from her!
Aw thank you so much!
Thanks Niba!
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 RUclips 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.
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
@@djenebasidibe468 indeed I did! Hahaha. We’re starting to take over the scene with Nick as our Pied Piper
@@PlayNowWorkLater lol
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.
@@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.
i know its a bit of topic but those earrings are amazing!
agreed! i want!
Ikr? Was my first thought, then her.. beautiful, then her clothing, beautiful as well.
This lady is really amazing at communicating
Thank you so much!
nice to 'meet' you Niba. great presentation on something new. I learned a lot and found it quite interesting
Welcome, Niba!
Glad to be here :)
Welcome Niba!
That surprise second camera angle was fun. XD
And not overused which I've seen some do to the detriment of the content flow
Yes it was very well done!
Girl you are a phenomenal science communicator. -alaska checking in-
Such a great calming voice
Fell asleep twice watching this video.
Niba in long-form scishow content? Nice. Love the way she presents.
So glad you enjoyed!
Niba is great. Perfectly fits in with the style of the SciShow family. Hope we see more!
I like these new sets and styles of presentation. Keep it up.
Niba has a great presentation and articulates herself well 👍🙏🏻
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).
This is my new favorite SciShow ep. It answers some questions for me.
Me too. “Who is the cutest scishow host?” ❤
She is quite beautiful.
Wow, a second camera angle, how fancy
Great video! Always happy to see geology content.
Hi new person! Welcome to SciShow :)
The merging of SciShow and NotesbyNiba. Well done!
We want more of Niba!!! She’s so fun to watch and easy on the ears!!!!
Very easy to understand , yes excellent presentation
Niba your fashion is 🔥
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)!
Hi Niba, welcome! Great first video :)
Good presentation. Welcome aboard, Niba.
What a pleasant voice to listen to
I love her! She’s such an amazing presenter? Orator? Professional talker? Idk what it is. She’s just fun to listen to
Thank you so much! I'm so happy to be here :D
Welcome Niba :)
Welcome to Sci Show!
Glad to be here!
Perfect pitch, pace, and tone. Easy to listen. Bravo!
Great new host! Welcome!
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.
because it's passover: "why is this area of the subduction zone not like all the other areas of the subduction zone?"
same thing went through my head
😂
You have to rewatch it then she tells you
@@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.
Because this one doesn’t rise. It’s flat and thin.
חג פסח שמח!
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.
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.
@@akakscase Thanks for the tip! If there's campgrounds along the way I think taking an RV would be super cool.
I definitely dig the new background/presentation format 🙂
Niba is the new powerhouse of the cell
this made me laugh so hard, thank you!
Great presentation. Niba is an excellent communicator!
Instant crush! Oh yeah, and the stuff about the magma was interesting as well. ☺️
Excellent presentation! Had never heard enough about Mt. Denali.
I didn’t find out that Denali wasn’t a volcano until very recently, and now I know why. Thank you SciShow!
0:58 this piece right here was so nicely written! Very simple and direct.
Heyy it's a long form video with Niba, this is great!
An excellent episode about my home state!!!
What a wonderful teacher, Niba is
Niba is great! I love her presentation style, and her fashion sense too!!
Yay! New host person!
Niba is a beautiful and excellent host, thank you Niba for doing a very good presentation, Peace!
thank you!
Thanks!
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.
Can Dyslexia be a late onset thing?
Probably not.
Coulda swore it said Mount Denial 😂
Denial's not just a river in Alaska. Or a mountain in Egypt.
@@andyjay729 😆😆😆😆🏆
It's a symptom of our mental rewiring by the A.I.
Could be Denial for the people who keep saying Mt. McKinley
Hi Niba!
Denali is such a cool word.
Every other dog is named that here....
@LivinRob so you could say Denali isn't just a mountain in Alaska?
Oh I love this host! Interesting theories!
love learning about my home state❤ i grew up in sitka with mt edgecumbe and miss the mountains where i live now :'(
Hi Niba!
At last found you on IG & FB!!
Woahh it's Niba!!! amazing video!
Nice voice. Not irritating at all. Thank you for a good presentation..
I like this lady, she's a great orator
I'm loving this video!!!!
Best guest presenter for sure
thank you!
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"
Thank you!
Bwaaahh? New host?? Awesome
I like this lady, its like she talking to you directly like a curious friend
That background reminds me of something that may or may not have originally aired in the 1990's.
Good stuff! 👍👍
Niba rocks! ❤
I see scishow has entered it's 90s background era.
Born and raised in Alaska, live in Anchorage and I remember when Mt. Spurr erupted in 92.
One of the best hosts ever!
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?
Her outfit is amazing!!! Everything about it is perfectly coordinated and cool 🤩 I just might have to make an outfit inspired by hers
Thank you! I wanted to make the visuals interesting :) More of my fashion and science over at ruclips.net/user/notesbyniba
@@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 😆
@@idratherbe_inspace5430 yay! That is so kind of you!
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.
Im from Alaska!! Great video
bro is just casually wearing stays 🔥❤️ love the style
Denali is also mainly composed of granite, and granite rock formations are the remains of large magma chambers, like the Yosemite national park peaks
If the pressure keeps building, it can become a supervolcano like Toba.
With magma in a large area being unable to get to the surface, this sounds like the site of a future super volcano.
Maybe in millions of years, yeah.
Niba is an awesome narrator. She reminds me of Michael, whom I miss.
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?
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.
Does anyone else keep thinking about pizza everytime crust is mentioned in this video?
Nope. Thinking about quiche.
"the science behind looking for Alaska's volcanoes" hehe 😄😄😄
Cool video
Like the new presenter. Very professional.
Welcome to scishow!
Amazing content about a often confused bit of geology. Also glad to see young people dressing like 1975 Stevie Nicks again.
Another interesting fact related to the Yakutat terrane is that it share sits origin with Siletzia likely in the form of what was a former oceanic plateau at or near the East Pacific Rise fed by the Yellowstone Hot spot prior to their collision with North America, an Iceland of the Pacific if you will.
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.
Cute and smart. Great combo
I ask myself this every day
+10 points for using the correct name for the mountain. Denali is a very cool mountain, and you can see over 300 miles away.
Hey! It's Tangent Cam!