I have a perfect unobstructed view of Mt. Jefferson from work. I can see a nice stretch of the Cascades from Mt. Hood to Three Sisters, and I often wonder which one will go first
I lived and worked in the shadow of Mount Jefferson for a number of years, with the Forest Service and for ODOT on highway maintenance. It is an absolutely beautiful place.
I used to fly a turboprop airliner between the Redmond airport and Portland International. Many times, the ATC vectoring would take us right over the peak of Jefferson and the sharp crag atop. It's a stunningly beautiful mountain. Between Seattle and Portland if the weather allowed, we'd get a "St. Helen's Tour" and orbit the crater at 11,000' in a figure 8 allowing both sides of the aircraft to see the steaming lava dome. When you're the captain with a degree in Physical Science any chance to explore the geology from above is taken!
I love this Cascades ark we've been on. Oregon is awesome, our geology is almost all volcanic and I love this place! Cold, snowing today, love that too!
May I once again humbly ask for a video about Steens Mt? You got pretty close with Diamond Craters, but the Steens itself, with its surrounding sharply column-bounded flows, is not only incredibly beautiful, but a geologist’s paradise.
Could you please do a video on the Three Sisters volcanic complex? I find it to be fascinating and very relevant if you're covering more Oregon volcanoes in the future. Thanks!
I think I recall that he has looked at the slow uplift a few kilometers west of South Sister. A longer video on that unusually active section of the Cascade Arc would be interesting. It's possible the High Lava Plains magmatic, uh, situation, has something to do with the atypical levels of silicic volcanism in that stretch
I live in oregon, and in oregon we think everything is a volcano. We're even suspicious of ant hills being volcanoes. But seriously, I'm in a small community 40 miles southeast of Crater Lake National Park. We have a cinder pit a couple miles out back in the national forest. Most of our national forest roads are 'paved' with red cinder gravel. Have to be blind not to know we're in an active volcanic region.
Cool video! Have you considered about doing Oillaie Butte? They're less known shield volcano bit north from Jefferson. Could be interesting for you to look up. :)
I have a feeling the main cone of Jefferson isn't quite done yet. Volcanoes that we thought were extinct are Bolshaya Udina in Kamchatka and Davidof in Alaska to name a couple. Thought to be extinct just to discover their magma chambers had seemingly been reactivated. Quilotoa, the western most volcano of the Ecuadorian - Andes had been dormant for 14,000 years prior to it's cataclysmic VEI-6 caldera forming eruption in 1280. The fact of the matter is that these volcanoes are unpredictable and can remain silent for many thousands of years.
Yeah its a possibility and based on the analysis of crystal growth layers within erupted volcanic products it can happen surprisingly quickly on the order of months when fresh hot lava intrudes into a dead or dying largely solidified volcanic system. Along with magma mixing volcanic rejuvenation is the source for many of the most explosive volcanic eruptions. The fact that you can go from a quiescent largely solidified magma body to an active siliceous volcanic system on the verge of an eruption in a timescale of mere months to years is fascinating and a major warning for such volcanic systems. The difference between a dying volcano and a rejuvenated one could be as little as one large magmatic intrusion onto an old magma body batholith.
I love your videos. Could you please cover Volcán Barú in Panama 🇵🇦, it had a huge edifice collapse much bigger than Mt St Helens. I think it’s notable enough
Hello. Great video! I was wondering if you could do a video on either the recent deep earthquakes in Brazil (and the cause of them) or the Cranberry Island volcano in Maine? Thanks and keep doing what you do!
Can you discuss the recent eruption on goat rock in wa? I seem to have flund subglacial or glacialy carved conder cones along ridgeline, there are 3 prominant features towards the east of goat rocks.
I personally don’t think Mt Jefferson is dying or becoming extinct. 280,000 years is relatively young for a cascade volcano (rainier is 400,000 years old) and many cascade volcanos tend to have lifespans of 1.5-2 million years. IMO, I would just think that Jefferson is entering a dormant period between eruptive periods. Eventually it will reawaken in a few hundred to few thousands years
My theory is that the main peak of the Mount Jefferson complex might not erupt again for a specific reason. The ice sheet likely forced magma intrusions to build up in and around the main peak for Mount Jefferson as the overlying ice sheet likely forced the magma towards the central peak. Once those ice sheets melted, magma could intrude more freely in the area, meaning it could form cinder cones away from the main peak.
What eruption generated all the ash which killed all the animals at the Ashfall Fossil bed in Eastern Nebraska? Nebraska doesn't have any volcanoes, so it must have come from quite a distance away.
Any interest in covering larger features like the Mid-Ocean Ridges? The cracking apart of the Red Sea or of African and South America must have been monumental.
Mt. Jefferson, despite it's height, often remains hidden from many places. There are few roads that go near it and those that do often have other ridges that obscure it, so you must know when and where to look and have good weather. Best observed from the east, however. Often Mt Hood and other peaks end up stealing the show.
@@poponachtschnecke That area burned badly a few years ago but is on my list for a visit when they reopen it, hopefully this year. The pictures are amazing.
When a child I lived in Madras from which Mt. Jefferson is visible. There are several old lava flows and large canyons as far as Madras. I was looking at the mountain on Google earth a few years back and noticed what appears to be some ridges on the sides of it but broken up and not completely surrounding it. This suggested to me that there may have been a larger mountain that subsequently collapsed then the mountain now in place erupted within that footprint.
Will we see any of these volcanoes erupt again in our lifetimes? The answer is no but they can and will become active eventually again in the far off future. Earthquake activity will be the deciding factor before anything happens volcano wise.
As a still young geologist, I expect he has been studying this area recently. He is an American, and while current erruptions are more sensationalistic, it's often better to learn/teach about what you know better, rather than sensationlize current topics. I actually like this style, I get the deep indepth learning so I can understand more later.
In geologic lifespans of volcanoes, 300,000 year old Mt. Jefferson is actually relatively young; compared to middle-aged 500,000 year old Mt. Hood. Assumptions about Mt. Jefferson’s eruptive category as inactive due to its eroded state are incorrect. Volcanoes build, self-destruct (Mt. St. Helens,) erode and rebuild (Mt. St. Helens.) Mt. Jefferson will eventually refill its glacial cirques and edifice eons from now, which is a blink of a geologic eye.
Pro tip: Your thumbnail doesn't know the difference between a _colon_ and a _semi-colon._ You used a semi-colon, but should have used a colon. Colons introduce things, especially lists. Semi-colons separate closely-related but complete sentences, or act as a super-comma.
