The Geologic Oddity in California; Half Dome

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One of the most impressive features within California is a towering volcanic edifice called Half Dome. This ancient mass of rock contains an abundance of granite which rises 1,362 feet above the surrounding landscape. It is part of an ancient volcano, which was uplifted and eroded over time. This video will discuss how Half Dome in Yosemite National Park formed, and mention some nearby related geologic features.
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[Sources]
[1] www.usgs.gov/faqs/how-did-hal...
[2] sanfrancisco.cbslocal.com/201...
[3] news.stanford.edu/2015/12/11/...
[4] www.yosemite.ca.us/formation/
[5] en.wikipedia.org/wiki/Half_Dome
[6] en.wikipedia.org/wiki/Half_Do...
Google Earth imagery used in this video: ©Google & Data Providers
Thumbnail Photo Credit: Wallula, Pixabay, Pixabay license, pixabay.com/photos/half-dome-...
Pixabay License: pixabay.com/service/terms/#li...

Опубликовано:

13 июн 2021

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Комментарии : 515

@GeologyHub 2 года назад

Update: I made a legitimate mistake in this video. When I said volcanic rock, I meant to say intrusive igneous rock, NOT infer an extrusive igneous rock.

@chrisward4576 2 года назад

I caught that but you're cool , I spent a lot of time around the yosemite area it's an awesome Place been here all my life, most of the volcanic stuff is to the east on the Eastern flank of the Sierras, interesting geological area, a lot of hot water too. Most of Yosemite were formed by glaciers half dome just happened to be in the right position and is being pushed up still.

@Foxtrap731 2 года назад

Fair enough. I get it. Now let’s discuss Stone Mountain, GA

@MidnightMiik Год назад

Either way, it used to be magma.

@sherylcascadden4988 Год назад

When I took a semester of geology in Jr college, this formation was called a pluton. Thank you for correcting yourself, recognizing and accepting/correcting mistakes is becoming a rare trait these days.

@georgesheffield1580 Год назад

Thank you for correcting this BUT this area is all an intrusive igneous uplift . This should have been caught before publication .

@TheAverageGuy12 2 года назад

As an Aussie I have to say driving into Yosemite Valley is like experiencing one of the wonders of the world. Half Dome's impact on the visitor is overwhelming...and now I know its geology.

@kalebtittle5083 2 года назад

I felt the same way when I summited half dome. Quite the hike

@jasonworks1454 Год назад

I've only been there once, and it was when I was less than 4'.... 1.25m tall. I got lost in the park in the 80's, and I don't remember what my ADHD mind on Ritalin got distracted by, but the trees and park were amazing to get briefly lost in. The short search I wasn't aware of was over in hour or two I think. California volcanos and quakes were fun, but 5-7.5, maybe 8 magnitude potential is deviation, but I'm kinda partial to the cascadia quake potential after the teaser 6.8 western Washington got in 2001. Happy Shakey swirly splashy.

@leechjim8023 Год назад

From the Outback!?? That's one HELL OF A DRIVE!!!😆

@TheAverageGuy12 Год назад

@@leechjim8023 hop, skip and a jump🦘

@SonOfTheOne111 Год назад

It actually is a wonder of the world! 😂

@GuantanamoBayBarbie2 2 года назад

I visited Yosemite in 1970 on a day trip from my sister's home in Gardinerville, Nevada. I saw Half Dome at sunset, lit up and looking like it was made entirely of gold! Yosemite is a place of many wonders, to be sure.

@louisliu5638 Год назад

wasn't it party time in Yosemite as that summer was the first year half dome was climbed free style?? we had been up the valley for eight weeks and came down to a a great time. !!!

@youngnutsack17 Год назад

I wonder what it would’ve looked like 1000 years ago when the only humans around were native Americans, no roads, no signs, no cables and lights everywhere.

@rummy98 Год назад

The most beautiful thing I found in Yosemite was how dark it was and how many stars are visible. I spent two full nights just out in the woods looking up at the sky. I wish there were a dark zone nearby where I live but they are getting harder and harder to find.

@peterf.229 Год назад

central AZ ( rural parts not Phx area) is great , Perry Mesa is a great place to see the stars , rural Maine and along the tracks along the Empire Builder ( train line from Chicago to Seatlle WA is also good. at night i was in MT , ID and E WA and the sky views were neat)

@v.e.7236 Год назад

I hiked for two days to get to the backside of Half Dome w/ my hang glider, just to get a good flight where "no man had gone before." It was an amazing flight that lasted over four hours and got me a $176 ticket (compliments of Mr. Ranger), but SO worth it. Some of the best thermaling I've ever experienced. I also flew off Rushmoore and got the another ticket upon landing, this time for $250 - still worth it. Those big heads put out some awesome thermals. lol

@Space-2-2 6 месяцев назад

You were in the air for 4 hours? How?

@v.e.7236 6 месяцев назад

@@Space-2-2 Thermals.

@frzferdinand72 2 года назад

I highly recommend visiting Hetch Hetchy Valley, which is the next valley over but within the boundaries of Yosemite National Park. Stunningly beautiful and a highly underrated part of the park.

@markiangooley Год назад

Also a truly strange name. Most people think a water project with a troubled history first and valley second, and, if Californian, might not bother to visit.

@ChildSpaceMethod Год назад

Some say before the reservoir that valley was as beautiful (if not more) than Yosemite Valley. Others say John Muir died of a broken heart not long after the dam was filled.

@dboconnor57 2 года назад

Thank you so much for doing this. My parents, who have now passed, used to take me to Yosemite every other year. I loved it then, and now.

@pixelatedgalaxy9131 2 года назад

Some of the most beautiful places in the World were formed by volcanoes and geological activity, and people often don't know they were. But you make enlightening videos and inform people about this, absolutely wonderful. Your channel is amazing and is one of my favourites, thank you for all your videos.

@thomfisher1100 2 года назад

Beautiful yes. Formed by a volcano. No.

@OddPoodle Год назад

I live right near here and have visited countless times. The view from within the valley, seeing all those mountains towering over you, never gets old. Never. I could see it a thousand more times before I die and still be just as awe-struck.

@townazier 2 года назад

I have never even realized Half Dome must've been volcanic, its awesome to know a mountain so high above sea level today, formed underground :O

@Muskoxing 2 года назад

Technically all mountains on Earth formed underground! Since mountains are made of rock, even the summit of Mount Everest must have once been deep enough underground for the sediments that make it up to lithify into rock.

@cornbreadfedkirkpatrick9647 2 года назад

scary it can burp just as bad

@nebtheweb8885 2 года назад

@@Muskoxing Actually the top of Mt Everest was once the bottom of the ocean. The yellow band below the top layer is marble, a metamorphosis of limestone. Its all right here. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-3-oYON9V8tA.html

@Muskoxing 2 года назад

@@nebtheweb8885 I'm familiar! Himalayan geology is fantastic.

@kevinf37 2 года назад

This presentation is inaccurate. The granodiorite of Yosemite is NOT volcanic. It never extruded onto the surface. The correct term is plutonic, signifying molten rock that solidified deep under the surface of the earth, after which is was exposed due to erosion, long after it solidified.

@1.4142 2 года назад

Correction: Plutonic rock, not volcanic rock.

@GeologyHub 2 года назад

Yep!

@melodiefrances3898 2 года назад

Yes, exactly. It was a bit jarring to see that headline.

@marlinweekley51 Год назад

Climbed half dome 3 years ago. Spectacular. One thing to note if your planning on hiking up: the hike up the sub dome has large areas of no hand holds or steps making coming down a bit more “interesting” than even the climb up the cables. Wear running shoes with good grip.

@peterf.229 Год назад

i hate rock climbing but there are granite rocks here in AZ that despite being super steep are very grippy , but yes down is always more scary than up . i wear Merrill hiking boots and the grippy stuff on them works great

@JohnDeck1 2 года назад

I hiked from the east side of the Sierra’s to King’s Canyon in 1970. In the inner Sierra’s we went past another rounded dome struture, though much smaller.

@mapleleaf902 2 года назад

I hiked King's Canyon area specifi cally Lamarck Col and Piuite's pass. There was a rounded done called the Hermit. I was in the area in the early 1980. Too old to go back now.

@MountainFisher 2 года назад

@@mapleleaf902 You're too old to go back now? LOL I hiked the JMT twice in 1972 and later in 74 or 75, not exactly sure as memory isn't what it used to be. I would love to go back and spread my son's ashes and my own at the base of Mt. Banner at Garnet Lake. Garnet Lake is probably the most beautiful spot on the JMT. Look it up on Google maps under Mt Ritter and click on the photos.

@MrScott1171 2 года назад

I visited Yosemite National Park in the 1992. It was a very Beautiful park. I did not know that it was a lava dome that never erupted onto the surface. I learned something new. This coming from an amateur Volcanologist.

@ACHistory 2 года назад

California also has some other extinct volcanoes. One is in Pinnacles National Park, two are next to Lake Tahoe (Mt. Pluto & Mt. Rose), there's Mt. Calavera in San Diego, and the Sibley Volcano near Oakland.

@MidnightMiik Год назад

Fantastic! I've been there several times and only knew the glacier part of the story. It's hard to imagine it being 6 miles deep! There are many rock formations in the eastern Sierra that exhibit exfoliation. It's fun to climb around on the "smoothed" surfaces. Half Dome is a little extreme climbing though. Even with the chain path, it is very steep and a very long way down.

@augustolobo2280 2 года назад

This video was VEERY COOL! I really like these different stories about other types of geologic features such as ancient volcanoes and mountain ranges. Well done, this last series of videos were a little bit unnusual compared with the majority of videos on this channel, but gotta say that they're my favourites! Devils Tower, Mole Hill and this one were veeery interesting, because they go beyond just the volcanoes themselves, they explore a lot of the past geologic setting of millions of years. That history of ancient tectonic plates, seas, mountain ranges, oceanic ridges, continents truly fascinates me.

@Vinlyguyx420x Год назад

Have you ever heard of the Canadian mountain town of Banff? It’s a world famous tourist destination There’s a mountain directly outside of Banff called Mount Rundle. When you’re in town you cannot miss it because it’s 1/4 of the sky. It would be VERY COOL to see how that mountain was formed

@tdreff Год назад

I’ve made the hike up to Half Dome. Standing at the summit, looking out at the Yosemite Valley was an incredible experience.

@thomasdrivas5317 2 года назад

There's a ancient volcano in Australia called the Cerberean Caldera which underwent a super eruption 374 Mya, which in turn contributed to the Late Devonian Extinction event. Please I would love to see a video on this extinct volcano

@BlGGESTBROTHER 2 года назад

As far as I understand it exfoliation domes have more to do with pressure gradients than temperature changes. The center of the dome is surrounded by rock on all sides and is therefore under extreme pressure while the "skin" of the dome is under less pressure and from one direction only. This difference in pressure causes the outer surface to relax and expand which leads to it cracking and eventually sluffing off in flakes.

@angelapsaltou4613 2 года назад

That is a great explanation of exfoliation dome! I am not sure, however, that Half Dome is an exfoliation dome - I thought it was erosionally formed instead. I could be wrong, but I'd look further.

@denyscpoyner Год назад

@@angelapsaltou4613 I'm sure that freezing water has a bit to do with it as well. Water seepage into tiny cracks then freeze expansion cracks the rock even more.

@Jmoneysmoothboy Год назад

Pressure is more or less equal to temperature

@GeologyHub 2 года назад

Due to a few requests, I decided to cover how half dome formed! Yosemite National Park is truly a beautiful area within California. As for tomorrow's video, you all will decide which of three videos I will post by replying to this comment. The options are all active volcanoes: [1] Bulusan in the Philippines [2] Longonot in Kenya [3] Raoul in New Zealand

@KaiserStormTracking 2 года назад

I say Raoul. Been a bit since the last NZ video

@Eric_Hutton.1980 2 года назад

Raoul in New Zealand

@pixelatedgalaxy9131 2 года назад

Raoul, I always love NZ geology

@nooneherebutuschickens5201 2 года назад

Longonot. The African volcanoes are so different.

@BrilliantDesignOnline 2 года назад

All would be interesting, but 2.

@need100k Год назад

I've been to the top of Half Dome 3 times, and I would strongly recommend it to anyone who can get up there. It's much more difficult nowadays due to having to get a permit, which is difficult to get. I went up in the 80's and 90's. Yosemite is truly one of the most magnificent places on earth. Should be on everyone's bucket list.

@SharpBalisong Год назад

You only need a permit to take the cables up during the “on” season. There are other ways up, albeit, most would consider more difficult. :)

@chriscooper654 Год назад

Grew up visiting Yosemite; all its wonders and especially Half Dome never failed to impress me.

@MihzvolWuriar 2 года назад

I'm playing Gran Turismo 4, there's a race in Yosemite, I'm gonna look for it now.

@ravingcyclist624 2 года назад

Excellent video! It's amazing that so many people actually climb up the face of that everyday. Some have posted YT videos.

@susanl7514 Год назад

45+ years ago (as a teenager) I took a one-day rock climbing class at Yosemite, of course not on this particular rock face. I knew by the end of the day that this would never be my sport.

@celestialrift Год назад

It must be so wonderful to study geology in America. I'm a British student and while we have a brilliant landscape and history here, there is just so much diversity, so many different environments in the USA to work with. It is a beautiful country.

@striker44 Год назад

Hiked to the top in early 90s and been there many times since. Have the same angle shot that you showed with hikers lined up the cable. Thank you for the geology lesson.

@CBeard849 Год назад

When I was younger I day hiked from Happy Isles via the Mist Trail to the top of Half Dome and back a total of 3 times. It is a long hard hike and not for the out of shape or unprepared......that being said, it is doable and is well worth the effort because it will leave the hiker with memories that will last a lifetime.

@Jillysmom63 2 года назад

Wow that’s so fascinating. I’ve always wondered how things like that were formed. Thanks!

@darkwingduck5006 Год назад

I'd love to see a video on carbonatites!!! Going to be doing an exploration geo internship this summer in search of REEs found in some carbonatites here in Montana.

@critters16 2 года назад

Thank you so much, that was great. Appreciate the enlightenment on Half Dome! 👍👍

@MountainFisher 2 года назад

The Granite Batholith of what is now called Yosemite Valley is estimated as taking over a few hundred thousand years to cool down. The Valley itself was formed by massive glaciers eroding the Granite Batholith. In 1971 my friends and I climbed the western side of Half Dome using the "Death Slabs" path instead of using the established " cables path" on the eastern side as we had a guy who knew the route. Note; you must be an experienced mountaineer/rock climber to take this route, but it isn't as bad as it sounds and it is very helpful to take the route like we did with a guide. It is easy to get off the "path" (there is no path, it's solid granite) and then it gets dangerous. This path is used by experienced climbers.

@GeologyHub 2 года назад

Although I did not calculate the time it needed to cool, the rough figure you cite definitely seems in the range of possibility :).

@mikelouis9389 2 года назад

Thanks for the great video. It's pretty amazing to consider that every drop of granite was formed in the basement of a volcano. This gives me a whole new appreciation of New Hampshire, the Granite State!!!

@angelapsaltou4613 2 года назад

I hope you will look further than this video - it is not common for granites to be a base of a volcano. Most cooled magma bodies never reached the surface, and most did not spawn volcanoes.

@biketech60 2 года назад

One international travel writer with extensive travel experience was of the opinion that Yosemite valley is the most beautiful place he's visited . It's grandeur is inexpressible .

@mapleleaf902 2 года назад

Love geology, new fan to your channel. Thank you for your information Would be interested in Amboy Crater/cinder cone in So California, near 29 Palms and Mitchell Caverns near Blythe, CA

@blessedheavyelements8544 2 года назад

Very cool! Thank you Sir. Best Regards and Best Wishes for 2022!!

@kenwaldron8548 Год назад

As a child I loved volcanoes and you explain it in a way that anyone can understand

@doxielain2231 Год назад

Granodiorite! When I was climbing and trekking in Nepal in the late 90's I was so frustrated that I knew nothing of the details of the rocks around me, and a black and white one really caught my eye. it was Granodiorite! Thank you for indirectly solving that little mystery for me.

@GeologyHub Год назад

I’m glad I was able to help! :). Granodiorite is the intrusive equivalent of dacite

@robertturner1308 2 года назад

Thanks for the video! I hiked to the top of Half Dome but did not know it’s geological history. This was fun to learn.

@FOBfangirl89 Год назад

I used to live 30 miles away, didn't get to go to Yosemite often but have been quite a few times. Half dome and those mountains have my heart ❤

@WootTootZoot 2 года назад

I live in the southern Willamette valley. I have always been interested in the Missoula glacial outburst floods and how they affected the Willamette valley.

@angelapsaltou4613 2 года назад

That is a great piece of geology! There are several documentaries about it.

@jupavero Год назад

I love this explanation of this wonderful geologic formation I've had the privilege to visit.

@BubbaDukems Год назад

Fun fact: The black streaks going down the center of the Half Dome were created in the 70s. A helicopter was used to transport logs to the summit. Park employees (perhaps rangers) would ignite the logs and burn them to the point where they would break up into embers upon sudden impact but keep the log(s) solid enough to roll. The logs were then pushed off of the Half Dome to create a "fiery waterfall" for spectators in the Yosemite Valley. This was done either close to sunset or after.

@josephwirtz8352 2 года назад

Outstanding video, very informative! Thank you sir!

@thomasjephson7639 2 года назад

Very interesting. I visited a couple of years ago and wondered how it all formed. Now I know!

@alwaysyouramanda Год назад

It feels like a land for giants out there. I was lucky enough to hike 9 hours to a water fall. There was a staircase-like part of the trial that wound around for what seemed like forever- such high steps and long strides…

@alwaysyouramanda Год назад

Trail**but trial is a great word for it 😅 it was GRUELING

@pjmlegrande Год назад

Saw the sunrise atop Half Dome last July. An experience that will remain vivid in memory till I head on out of here

@GeraColorz Год назад

Please take a look at a place called Cochamo in Chile. The wall called anfiteatro and the zone in general has a very similar geology to Yosemite, huge granite walls in a forest valley.

@RicoLen1 Год назад

I've visited Yosemite many times in my life. Today I live less than an hour away from its south entrance. It's been YEARS since I last listened to what any rangers or tour guides have said about Half Dome, but I learned that the dome was much more rounded before the last ice age and glaciation was the cause for it being so flat in the front as the glacier that carved Yosemite Valley cut through the rock. That of course appears to conflict with what you're saying, but since the information I got is likely 30+ years old I'd be willing to believe your information, being more up to date is thus more accurate as well.

@greggusan Год назад

Cool explanation of how Half Dome became a dome. But I was also interested in how it became half of one. I've heard it's related to erosion caused by glaciers, but wished this vid explained that too.

@jimf671 Год назад

Quite a landmark from the air as well. I was surprised to find it prominent and readily identifiable from an aircraft headed to SFO.

@benwinkel 2 года назад

Thanks again for your interesting explanation. Would you consider talking about the "Rheingraben" in Germany and its related volcanics?

@mitchellmaerz8429 Год назад

Love the video and that little program

@rideauriverrafter Год назад

Nice explanation of the geology of the feature. After you have visited The Half Dome, head north to Squamish, British Columbia Canada to see the 'Stawamus Chief" - a half dome with much the same history as this one but a tad higher: 2900 feet to the summit.

@grrlpurpleable 2 года назад

I'd love to hear some of these on the extinct volcanic craters and plugs in and around the Scottish Highlands, such as Achnaha in Lochaber, Arthur's Seat in Edinburgh or Ailsa Craig (the island that produces the world's professional granite curling stones) :)

@Sutterjack Год назад

Thanks for the video - I always thought half dome was solely the product of glaciation. I've climbed it twice and even though Yosemite valley is a congested mess now, it's still magnificent to see this in person.

@PoulCurl Год назад

I did enjoy the video. Thank you.

@peterresetz1960 2 года назад

How about a video about the Great Lakes region, and most importantly about the Mountain range that was eroded by the glaciers. Also the rebounding of the surrounding lands.

@SMartinTX 2 года назад

Half Dome is a laccolith, not a volcano. What was described in the video is the formation of a laccolith, which is when magma intrudes between layers of rock but never reaches the surface, instead forming a dome-like structure.

@greasyfoil6765 Год назад

I was just there a few days ago and I must say that Yosemite Valley is a paradise!

@joelmccoy9969 Год назад

Yosemite is so beautiful it is over-run with tourists even at the highest altitudes, it is nearly a theme-park even in the offseason it is stressful.

@jeany545 Год назад

It's still my dream to visit Yosemite before I die, man I would LOVE to go

@jackreisewitz7219 2 года назад

An upthrust of molten material does not = a volcano.

@dougmcclendon.9027 Год назад

Thank you for this interesting video. Do you have information on the formation of Enchanted Rock in Texas?

@gwenderp6229 Год назад

Reminds me of Morro Rock, seen as you enter Kings Canyon/Sequoia National Park.

@tgmccoy1556 2 года назад

The Blues and the Wallowas in Oregon are Dacite type rock.

@rojeliocastillo1480 2 года назад

@geologyhub since you did the half dome I was wondering if you ever looked up the Tehipite Dome in Kings Canyon

@Ekstrax Год назад

Man geology blows my mind every time

@maxpower19711 2 года назад

Will you be doing a vid on Mt Kelud? It has a history of devastating eruptions and I remember seeing it listed as one of the most likely volcanoes to produce a caldera forming eruption in the near future

@GeologyHub 2 года назад

Eventually, yes. It’s one of the most dangerous volcanoes on the planet; and has been largely ignored despite its history.

@jackreisewitz7219 2 года назад

Coo that you're going to do a segment about it!!! 👍👍👍

@erinmcdonald7781 2 года назад

@@GeologyHub Having not heard of this one, I definitely agree that it would be a good one to cover. Thank you, again, for the fascinating content! 💚🌎🌋✌️

@marklang5169 Год назад

Excellent data thank you

@naturaldisasterguy2687 2 года назад

Can you do Mount Washington in Oregon? It has had one eruption of spatter cones in the past 1300 years. You’ve covered almost all of Oregon but you forgot one

@ACHistory 2 года назад

If counting extinct volcanoes / maybe dormant volcanoes in Oregon, then there is also Three Fingered Jack, Olallie Butte, Simcoe Mountain, Brown Mountain, Mt. McLoughlin and the Pelican Butte.

@naturaldisasterguy2687 2 года назад

@@ACHistory and the Oregon coastal range volcanoes that are extinct

@ACHistory 2 года назад

@@naturaldisasterguy2687 There's seamounts too that are active.

@naturaldisasterguy2687 2 года назад

@@ACHistory yes, Also I did not mean that he didn’t do all of them sorry for miscommunication

@ACHistory 2 года назад

@@naturaldisasterguy2687 It's fine.

@ezybarra9252 Год назад

I live in this small town that’s maybe an hour away off of 140. Some people call it the gateway to Yosemite

@designerjackie Год назад

Stone Mountain in Stone Mountain, Georgia was also formed like this, but it is smaller than Half Dome.

@headlessspaceman5681 Год назад

I hiked it to the top without ever seeing it first, or having any idea what I had gotten myself into. I was invited along with a big group of students at my college, and we started before dawn and finished around dusk. At the time it was probably the hardest thing I had ever done. Honestly that hike is epic but not that bad if you're in shape, acclimatized to elevation, & you have absolutely no fear of heights. Also it's crowded which really ruins it for me. Years later I hiked it again on a day off when I was a hiking guide in the area. For those with less time or less tolerance for insane exposure to heights, Sentinel Dome is a 15 minute walk to the top of a nearby granitic dome just as tall. Also it should be obvious but the whole dang area is carved out of the exact same granite. I have yet to hear a sound explanation why there aren't more domes than just three or four, or what happened to the other half. Yes I know about the glaciers. Yes this was Native American Miwok land stolen from them by white armed vigilantes. Yes, we should all have to pay the Miwok, not the Interior Department of the US Gov't, for the privilege of visiting their incredible homeland.

@toddrader1470 Год назад

Yeah, it's epic, and an exhausting 1-day hike, and not for the ill-prepared (esp. wrt water)....but it also does not require any technical skills, so it's very achievable.

@KaiserStormTracking 2 года назад

So this is an unerupted magma Sweet Is that better huh?

@MihzvolWuriar 2 года назад

Just say magma, it's the same as "unerupted lava"

@KaiserStormTracking 2 года назад

@@MihzvolWuriar ik ik

@edp2260 2 года назад

It is granite, not lava. The rock solidified deep below the surface and crystalized very slowly.. A VOLCANO erupts on the surface, and emits molten magma, which solidified quickly, forming few crystals.

@KaiserStormTracking 2 года назад

@@edp2260IK jezzz stop assuming in an idiot

@josekuhn2819 2 года назад

@@KaiserStormTracking I always assume I'm an idiot first and then go forward...

@hashbrownz1999 Год назад

Knowing the geology of a breathtaking sight makes it doubly so.

@El3andro 2 года назад

Half Dome is a volcano??? Never knew about this!

@KaiserStormTracking 2 года назад

correction its a intrusion of magma exposed by millions of years of erosion

@LeahHimura24 Год назад

I would love to see a brief geologic history of the Adirondack mountains in New York State.

@deniceeverham9467 2 года назад

I just recently discovered the whole eastern Sierra is volcanic. Lots of lava flows and even a large cinder cone. It is beautiful as well. Some of the mountains look like crystals in the morning sun

@angelapsaltou4613 2 года назад

Yes, lots of volcanism in the Sierra, however the intrusive activity far outweighed the volcanism.

@Darkdragon5544 2 года назад

I'd love it if you could do the Monteregian hills (New England hot spot) in Québec (Canada)

@chrisbrowne4669 2 года назад

I have spent the night on half dome twice, once with the Boy Scouts and once with Explorers. Those were the days, before Yosemite became overpopulated.

@glenlewis8789 8 месяцев назад

25 Miles from Yosemite is the Devil's Postpile National Monument, an amazing example of columnar faulting near Mammoth Mountain. Would you consider doing a segment on the Postpile?

@mcdtropicalfishandaquarium8993 2 года назад

Do you think they'll ever get around to building a safer route up half dome and puts some bars up top?

@josephwirtz8352 2 года назад

...it’s not a good idea to have people getting drunk up there...

@virginiawaters6076 2 года назад

Silly you!!!!

@davidseymour6447 Год назад

I grew up in western Oregon, and have always wondered how the Columbia River found its way through the Cascade mountains. The mountain passes between other mountains in both Oregon and Washington are several thousand feet in elevation. Why isn't the elevation between Mt St Helen's and Mt Hood as high as the pass between St Helens and Rainier, and between other mountains in the region?

@scoutdogfsr Год назад

Spent many days on this face. Hands down the most fun bigwall climbing in the country!

@StuartHollingsead Год назад

I request an evaluation on the origins of Mt. Stuart, and a summary of the two primary theories.

@own4801 Год назад

Volcanic Theory: This theory suggests that Mount Stuart was formed by volcanic activity that took place around 25 million years ago. According to this theory, the mountain was created when lava, ash, and other volcanic debris were deposited and then solidified over a period of millions of years. The rocks that make up the mountain are mainly volcanic in nature, and the mountain itself has several volcanic features, such as lava flows, ash deposits, and volcanic vents. Metamorphic Theory: This theory suggests that Mount Stuart was formed through the process of metamorphism. According to this theory, the mountain was created when sedimentary rocks were buried deep beneath the Earth's surface and then subjected to intense heat and pressure. Over time, these rocks were transformed into the types of rocks that make up the mountain, such as schist, gneiss, and granite. Both theories have some evidence to support them, but it is likely that the mountain's formation was a combination of both processes. Studies have shown that the mountain's rocks have been subjected to both volcanic activity and metamorphism, which supports the idea that Mount Stuart's formation was complex and multifaceted. Ultimately, the origins of Mount Stuart continue to be a subject of scientific investigation and debate.

@ChrundleTGreat Год назад

Could you do a video about the Owens Valley in the Souther Sierra Nevada and the numerous extinct volcanoes in the caldera there?

@ChuckSploder Год назад

The one time I visited Half Dome, I saw people rock climbing all over it and I was legit scared for all of their lives (I was 9)

@Cheezcurdz-xx4rf 2 года назад

Can you do the Western Samoa Volcanic Field? When I look at it from google earth I can see multiple craters in a line on both Upolu and Savaii. I mean cinder cones

@ACHistory 2 года назад

Upolu and Sava'i are two giant shield volcanoes. American Samoa also have some volcanoes too.

@matthewhooper4686 Год назад

Very similar to formations in Tasmania Australia. Unique.

@CashKingMarcus Год назад

Almost thirty years ago my friends and I slept on top in a tiny cave near the edge and parachuted off half dome at sunrise.

@Australisium 2 года назад

You should go over the Sutter buttes. It was once an ancient volcano as well.

@jonathanturek5846 Год назад

I think due to how the southern California went from diverging plates to transform fault boundaries is why

@virgo714 Год назад

Can you make a video on the geology of Wild Willy’s Hot Springs by Mammoth Lakes plz 🤗 or Lake Tahoe

@bradleybriggs 2 года назад

Please cover the so called "Sugar Loaf" in Virginia City, Nevada -- Thank You

@noelvalenzarro Год назад

Are those exfoliation pictures from enchanted rock?

@marktheshark9680 2 года назад

Is it a batholith? Stone Mountain in Georgia might be an interesting one to cover too!

@uprightape100 2 года назад

Free advice: If you hike to the top.....be walking well before sunrise in order to summit by 10AM at the latest. Just get up and go with water and food already packed. Summer afternoons feature deadly lightning strikes (Google it) and mobs of people that are easily avoided by starting early.

@charliepea Год назад

I always thought that Half Dome was a result of an earthquake shaking Yosemite millions of years ago and the "full" Dome had a huge rockslide which made it slice to half. I wish I can visit Yosemite and the dome in my lifetime.