The Many Active Volcanic Provinces Throughout the Lower 48 States

[@jjMcCartan9686]

The most concise fact based channel on KZbin.

[@edwardlulofs444]

This answers many questions for me. Fascinating. I expect that I will watch this several times. Thank you very much. 🙂

[@xwiick]

Thanks for all the hard work on these videos!

[@williammahley4876]

Excellent synopsis!

[@kennyjones559]

No. 1. My favorite YT channel.

[@TheSpaceEnthusiast-vl6wx]

Thanks as always, Geology Hub!

[@render1802]

Another great video as always! You discuss geologic topics I've always wondered about, and bring up stuff I never knew existed - all in a no fluff format which neither wastes my time nor skimps on details. You and Myron Cook are my favorite earth science channels. :) For future video ideas, could you talk about the Dakota Badlands? What formed them and whatnot.

[@ticksunbs4944]

thanks for the video

[@mikenesseth9645]

Best segment AWESOME JOB!!!

[@brianreddeman951]

I was never taught about the Rio Grande rift zone. Thank you. It's time to pester a few college professors 😊

[@alij7047]

Ah! I have noticed the near constant minor seismic activity near Clear Lake, without knowing the cause. Now I know! Thanks!!!

[@jamesleatherwood5125]

Great, informative video on the volcanic zones of the lower 48 states of the USA. Thank you. This was cool!

[@gali01992]

Back in the mid 70s, I was stationed in the US Army at Holloman Air Force Base as a meteorological observer. One of the weather stations I was assigned to was right along the edge of the Carizozo lava field. We would take surface observations and then go a little way into the lava field to measure the lava temperature. It was a stunning contrast between the very light colored desert and the black lava.

[@michiganrailfan2141]

A few months ago I asked for an explanation of the lava fields and 3 buttes around Idaho Falls. While I was hoping that there would be one video dedicated solely to them, this did answer my questions. Thank you.

[@Leyrann]

Actually, GeologyHub did a video dedicated to the Craters of the Moon at some point (which is one of the lava fields there).

[@michiganrailfan2141]

@Leyrann I'll have look for that one. But I was more interested in The 3 Buttes and Hell's Half Mile lava fields since I drove by them everyday on my way to work.

[@johnlord8337]

This whole video can easily be explained with ancient subcontinents, the Farallon and Pacific plate tectonics. Ancient Laramidia was the ancient volcanic island arc landmass that held the evolving Rocky Mountains (80-55 MYA), and the most-ancient of Sierras (250 MYA) and the recent modern Sierras (30 MYA-). The Farallon plate subducted under Laramidia like a spatula, a waffle and the cast iron griddle. It uplifted the Rockies even further, uplifted the northern Midwest states, draining out the Western Inner Seaway, and conflicting against the older Appalachia sub-continent stopped, and broke at the proto-West Coast states of WA, OR, and CA, forming the 2nd generation of Cascade Mountains, (the original Cascades having long ago uplifted and eroded), and the secondary coastal mountains down at the ocean shorelines. It is the Pacific plate coming north, uplifting and breaking apart the Farallon plate to the west and east of the Rockies (40 MYA - ) that the Rockies were pushed up even further. The Colorado Plateau was uplifted by the Pacific plate, and the modern Sierra Nevadas were uplifted and scrunched into place, alongside the CA coastal mountain range. All of the Cascade volcanoes, all of the many extinct and eroded volcanoes of the Rocky Mountain range, ... and the once active, now extinct Sierras are from these times of plate tectonics, uplifts, erosions, ....

[@AwesomeCats-k9n]

Taal Volcano just erupted today!

[@raymondricci5323]

Mt. St. Helens was fun. My father and I were motorcycle camping nearby when it erupted. We had to drive through the ash to get home. I had to take a shower and a bath to get the ash off my hair and body and it took my dad about 5 hours to clean his BMW motorcycle.

[@brianmckee3991]

Great Video! Thanks!

[@CTP1111]

The Walker lane is so fascinating as it is a fairly recent geological discovery

[@Dragrath1]

Yeah there are lots of provinces out west but they probably aren't all independent. For example base don the geologically recent appearance of Ocean island Basalt derived melts in parts of the Cascades and potentially the high lava plains etc. I'm pretty sure that Yellowstone is contributing some degree of melt to these areas even if the signature is getting diluted. And even if the current activity isn't related to Yellowstone from seismic tomography past volcanism definitely is since there is a huge slab window which dates to 16 and 17 Ma which involved the simultaneous initiation of slab rollback across much of the cascades, the formation of the Columbia river flood basalts and the onset of Basin and range extension. From the tomography it appears that the Farallon plate fell away deep into the mantle as the Yellowstone hotspot burned its way through the slab by uplifting and melting it producing the Adakite volcanic activity from ~30 to ~20 Ma culminating in the initiation of voluminous flood basalts. The youngest activity is related to the Colorado plateau and the Rio Grande rift (as well as the overlapping Jemez lineament ) but I can't help but note that the largest thermal anomaly associated with this activity is directly below and adjacent to Yellowstone which makes me wonder if this activity might being fed/boosted by Yellowstone's plume likely as hot material is being increasingly deflected west from the plumes current location beneath the Wyoming craton. On that note it has been recognized form tomography how suspiciously thin the Wyoming craton is and I learned this past year that there are young Lamproite pipe eruptions in this region which I have to wonder may be a consequence of Yellowstone melting its way through the craton and the vast slab wall which the plume is currently entrained in. Yeah the plume head appears to be further east that I had thought it just seems that the fattest part of the tail is currently the main path of least resistance. I wonder has anyone geochemically tested the young Rio Grande rift melts? Anyways the Rio Grande rift itself seems to be predominately driven by western NA moving or trying to move with the Pacific frame of reference.

[@AaronGeo]

Can you do a video on the 1692 Jamaica earthquake that hit Port Royal, a pirate city, and destroyed it? It's quite a crazy story. Day 2 of requesting

[@g3heathen209]

A lot of videos on you tube on that but would like to hear geohub's take on it.

[@alrinaleroux9229]

From what I've heard, various attempts at rebuilding it have been unsuccessful due to a range of disasters (hurricanes, fires, another earthquake). The little that remains basically functions as a tourist attraction. It almost seems biblical, reminding me of what God sometimes said about some places, that He would destroy it and that it would never be inhabited again.

[@skidwarrior4025]

Reminds me of the 1755 Libson earthquake

[@SaiIndryana]

The shore giant quicksand from earthquake that can engulp people and building from Jamaica

[@user-xu4kr6nw7o]

​@alrinaleroux9229 Jamaica is like Haiti or Somalia, they don't have the intellectual capacity to build or maintain it. It'll never be done unless America or England do it for them

[@raphaelivanfernandez7994]

I remembered Structural Geology 🥲

[@davidegomez3026]

You should do a video on the geologic oddity that is the lack of recent volcanism between Mt Rainier and Glacier Peak

[@dready7450]

Can you do a video idea of Volcanos near the Big Bend area, I know that most are eroded but a cone in Mexico near the Big Bend area called Cerro Colorado really peaked my interest. Its cords are 29°14'42.0"N 102°10'35.6"W if anyone wants to look.

[@larry7898]

So cool that a 1.8B year old geological occurrence impacts volcanism today!!

[@Sptn051]

I'm surprised you didn't mention the Fish Lake Caldera in South Central Utah, when it last erupted it covered the surrounding sandstone buttes with granite boulders and has obsidian vents nearly 100 miles away.

[@awesomeabsol]

I would be interested in a video about how closely spaced volcanoes are distinguished from each other. Specifically, why is Novarupta considered a new volcano when it used Katmai's magma chamber? What distinguishes these from Trident Volcano and other surrounding volcanoes?

[@cacogenicist]

We have the first mention of the Walker Lane.on this channel, if I'm not mistaken. 😊

[@StuffandThings_]

I remember reading that Medicine Lake, Yamsay Mountain, and Newberry are all influenced by the Basin and Range extension as well as the Cascade subduction, so would best be classified as both. Interestingly, from satellite you can see a series of linear features across all three volcanoes which are dotted with flank vents, probably representing some local faulting that acts as a path of least resistance for dike intrusions.

[@atrobey1]

Did you not cover the two volcanos in Virginia do to it being so long since they erupted? I recall you saying that Mole Hill can potentially erupt in the future.

[@johnrottler4000]

Day 1 of requesting The Meers fault in Oklahoma and talk about other intraplate faults and how large earthquakes can hit away from plate boundaries

[@electroerio7174]

Hey GeologyHub! I’d love to see a video on the ancient Wahwah Supercaldera in Utah. There’s currently little information about it online and I’m curious about how it was formed and if it’s related to the many other extinct volcanoes in Utah and Nevada

[@TheDanEdwards]

He did Wahwah a while back.

[@electroerio7174]

@@TheDanEdwards Oh for real? Do you happen to know which video he talked about it in because I couldn’t find it…

[@Vesuviusisking]

@@electroerio7174 the video got copyright warning

[@Deltaflot1701]

All that potential for volcanism in the Lower 48/Mainland, and sometimes I feel like the eruptions I'll ever be able to witness is Mt St Helens (1980/2004-2008), although I would imagine the people that live in the these areas would prefer them to be quiet volcanic areas :p

[@lainiegames1358]

Just a note.. Canada has provinces and territories the United States of America has States and territories

[@jayburn00]

There is an extinct volcano near the Chesapeake bay, on an island in the middle of the Susquehanna river called garret Island. The evidence for the volcano is still obvious in the form of a change in elevation, basically a mound in the middle of the island.

[@valentinsantiago277]

Can we monitor these "Paths of least resistance", and "Lithospheric Drips"?

[@Flugmorph]

Vulcanoes.

[@itsmyrum9219]

Although no one had said it's related to volcanic activity. The SW Washington to Portland Oregon region was dealing with a strong sulfer smell for about a week recently. Amy chance thus could be related to volcanic activity?

[@ChaosEarth-p8i]

are there any recent seismic activities or volcanic monitoring reports in the region that might correlate with the sulfur smell?

[@Lilyjeanbolt]

Basically the whole American landmass is highly volcanic!

[@robmcelwee389]

Ever looked at this volcano? The Door Point Volcano?

[@valentinsantiago277]

Or would they be a surprise situation.

[@jonasferencz8569]

Why do people always ignore the Canadian portion of the cascade volcanos? We don't need our arbitrary political lines getting in the way of geology!

[@cupsoflove1245]

Mugillon Rim 🙏

[@jacobvoracek2349]

Which one of these volcanoes should we be worried about erupting,ending humanity as we know it?

[@davidcranstone9044]

None

[@jacobvoracek2349]

@@davidcranstone9044 Is the super volcano in California extinct,or is it dormant?

[@Sweden4ever]

Guess its fine, but I wish americans in generall, would act more like "pangeases" . Even thou this channel often talk about places around the world, its centered around USA. Lost count of the US based shows you have aired. Iknow more about Arizonas bedrock than the old bedrocks in nothern Europe, the lost land of Doggerland and the forces from which it decends...etc Really finds this geology thing interesting ,but its hard to find fact based, high quality channels/information like this one, which have a wide "target" areas🗺 I have tons of questions but no one to ask. 😟

[@StHelens1980]

1st

[@Vesuviusisking]

I love your name