Lava vs. Water: The Fascinating Geology of Idaho's Menan Buttes

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  • เผยแพร่เมื่อ 26 ก.ย. 2024

ความคิดเห็น • 206

  • @Laserblade
    @Laserblade 11 หลายเดือนก่อน +6

    Thank you for explaining that puzzle Professor. Geology is how time writes, and that was a fascinating story to read.

  • @TheDevice9
    @TheDevice9 ปีที่แล้ว +33

    It was interesting that during the Teton Dam Flood of 1976, all that water that tried to follow the Snake River channel backed up when it got to the Buttes as it sort of tried to follow it's ancient path that went through them rather than around them.

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว +17

      Wow. Interesting. Look for a Teton dam video very soon.

  • @josephmartin1540
    @josephmartin1540 ปีที่แล้ว +13

    Thank you for exceeding travel videos by adding science! Without typing a wordy explanation, 66 with difficulties… seeing places I would love to or have seen with a science added… is not only entertainment, it is refreshing to my brain, my existence. I can support you beyond saying that, but carry on Prof. Carry on!

  • @Anne5440_
    @Anne5440_ ปีที่แล้ว +17

    Since watching your videos I'm amazed how much volcanic activity is in Southern Idaho. When I was young and traveling through that area I only knew about Craters of the Moon. Back then I was only excited by the road runners. My mother was a lifelong passionate bird watcher. Dad and I learned to pay attention to birds out of self defense.

  • @oscarmedina1303
    @oscarmedina1303 6 หลายเดือนก่อน +3

    Thanks Shawn. I learned a lot. At my age, I don't make it out into the field as often as I like. Your virtual field trips fill the gaps and teach me new things. Thank you!

  • @cherylwood5202
    @cherylwood5202 ปีที่แล้ว +6

    Thank you! Very interesting!

  • @lonthrall5613
    @lonthrall5613 ปีที่แล้ว +3

    Thank you!

  • @spinderella3602
    @spinderella3602 ปีที่แล้ว +6

    Very enlightening 🎉 Thank you!

  • @LanceHall
    @LanceHall ปีที่แล้ว +11

    Love being able to see these great geologic locations

  • @user-wk1mw9nj3i76
    @user-wk1mw9nj3i76 3 หลายเดือนก่อน

    Thanks for hiking up 700 feet to show us the wonders of the place. Blows the imagination, thinking about how much the landscape has changed over time.

  • @glenncourtney4876
    @glenncourtney4876 ปีที่แล้ว +2

    Phreatomagmatic. I'm going to have to work that word into conversation today.

  •  10 หลายเดือนก่อน +2

    Your students are really lucky to have such a great teacher ! As are all of us subscribers!

  • @charleymitchell5461
    @charleymitchell5461 ปีที่แล้ว +3

    Cool stuff, Professor. I am a new fan, I am a Zentnerd. Idaho has so much great geology.

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว

      Welcome aboard! Have fun perusing the existing videos.

  • @mortillery2306
    @mortillery2306 10 หลายเดือนก่อน +1

    Thanks. Was on top this weekend, family has a home in the area so this was wonderful.

  • @TheDevice9
    @TheDevice9 ปีที่แล้ว +7

    Thanks for doing this one. I grew up and spent most of my first 30 years within sight of the N. Menan Butte, but I never made the hike up to the crater. In fact, I didn't know there was a parking lot and trail... there probably wasn't when I was a kid. I always had a fascination with it when I was little and when I would find a big "lava rock" in the garden, I'd look up at the "Butte Volcano", as we called it, and imagine that rock flying out of it and landing in my back yard, miles away. I really appreciate what you do Shawn, thanks again.

    • @Sylvan_dB
      @Sylvan_dB ปีที่แล้ว +2

      The parking lot and trail were a surprise to me when I saw them a year or two ago! As a kid in a school field trip the school bus just parked on the side of the dirt road, and we all did a scramble up the side. That trip was the first time I saw a scorpion. Saw a couple out there last summer as well.

  • @stevewhalen6973
    @stevewhalen6973 9 หลายเดือนก่อน +1

    Thanks! I appreciate your continued explaining earths geological processes. As a long-term active hiker I'm seeing and appreciating more and more as I slowly continue to recognize and grasp on to remembering more of the many geological features explained in your greatly informative videos .

  • @julescaru8591
    @julescaru8591 ปีที่แล้ว +2

    Well between your good self , Nick and skye I have been having a great time on virtual field trips to places that I will never see in real life , thanks for sharing and furthering my love of the earth and her machinations!
    All the best Jules 👍

  • @andyhampsten4252
    @andyhampsten4252 4 หลายเดือนก่อน

    Watched a lot of these. Geo 10 many years ago in college sparked a life long interest in how things got the way they are. These 20 minute posts are short enough and informative enough for all tastes. And they're fun. Thanks.

  • @bottomup12
    @bottomup12 ปีที่แล้ว +4

    140,000 to 10,000 years ago you replied. So this was happening during the last glacial maximum period? Amazing to imagine what it must have looked like! Thanks for showing us!

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว

      My pleasure. Thanks for your support!

  • @hestheMaster
    @hestheMaster ปีที่แล้ว +6

    The formation of these volcanoes must have been a wild sight to see. Need to remember at 10,000 to 13,000 years ago
    there was a shallow set of lakes around here. It was colder here for a long period of time. Water from melting glacier
    activity formed an ancient Snake River system or maybe an early Snake River fork. With much more water just sitting
    there compared to today and with a great amount of groundwater no doubt, it then met a newly forming volcano with
    obviously explosive results. This kind of volcano is very rare in North America but I believe both Iceland and Hawaii have
    had their respective shares of this type of volcano. Thanks for a really great video Shawn.

  • @jayprice4543
    @jayprice4543 ปีที่แล้ว +49

    I live 5 miles to the east across the Snake River. I take my grandkids up the R-Mountain, as we call it, at least a couple of times a year. They call the big bowel at the end of the video the “toilet bowel”.
    I’m a former USGS geologist. Love your videos.

  • @Rachel.4644
    @Rachel.4644 ปีที่แล้ว +3

    This is really interesting! Very fun, I love seeing the places, to get to experience what you've talked about. And cool intro....
    👍🏻👍🏻💞😊

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว +1

      My awesome wife designed the intro. Beyond my skill set.

    • @Rachel.4644
      @Rachel.4644 ปีที่แล้ว

      @@shawnwillsey lucky guy (and wife) 😁👍🏻

  • @davidk7324
    @davidk7324 ปีที่แล้ว +2

    Thanks Shawn, this is now on my list.

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว +1

      Fantastic!

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว +1

      Look for more eastern Idaho videos over next few days.

  • @theclearsounds3911
    @theclearsounds3911 4 หลายเดือนก่อน

    I can see these buttes from my deck and hiked it once a few years ago. Great that you can come here to Eastern Idaho to teach us all the technical details about how things like this formed. Makes it beautiful here!

  • @utahammocan2578
    @utahammocan2578 9 หลายเดือนก่อน

    FANTASTIC Shawn. Love these insights in my back yard!
    Regards,
    Richard

  • @runninonempty820
    @runninonempty820 ปีที่แล้ว +2

    Live all your videos, will see if I can get to that site next month when we go to southern Idaho.

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว

      Awesome. Look for a few more videos from this area in the coming weeks.

  • @stephenmorton8017
    @stephenmorton8017 ปีที่แล้ว +3

    excellent! thanks.

  • @KA7EII
    @KA7EII ปีที่แล้ว +3

    Thank you for the great geology tour of the Menan Buttes. Looking forward to exploring it for myself soon.

  • @jwardcomo
    @jwardcomo ปีที่แล้ว +2

    Thank you. Really enjoy your videos!

  • @rockweiler777
    @rockweiler777 ปีที่แล้ว +2

    Right on! This is a great class.

  • @lmgaab
    @lmgaab ปีที่แล้ว +3

    I assume that you know this, Shawn, your program is unique in the world. I have searched may
    times for actual "in the field" geology programs. None, except...for Shawn Willsey! Not only that,
    your presentation is enthusiastic, curious, pro camera work, excellent lens and camera, and great
    subject matter. I usually watch through streaming rather than TH-cam site on my mac, so I can't
    comment to you that way. Onward and Upward, Professor Willsey! your devoted viewers,
    Larry and Shirley Gaab

    • @Sylvan_dB
      @Sylvan_dB ปีที่แล้ว +2

      See also Nick Zentner. Mix of field and lectures in classroom and community (and some in his back yard during the pandemic).

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว +4

      Thanks Larry and Shirley for your kind words. These videos are a fun way for me to share awesome geology and locations. There are a few other geologists out there doing similar things but we each have our own style and focus. Thanks again for your loyal viewership.

  • @Qigate
    @Qigate ปีที่แล้ว +2

    Great video and wonderfully explained... Thanks!

  • @grandparocky
    @grandparocky ปีที่แล้ว +1

    Great Video thank you Shawn!

  • @dianeehlers3234
    @dianeehlers3234 9 หลายเดือนก่อน +1

    I live in Houghton Michigan in the upper peninsula . There are mountains of basalt here from an ancient rift. The geology here is fascinating.

  • @jeffcooper3434
    @jeffcooper3434 ปีที่แล้ว +1

    Excellent video. I live in western Oregon now, but I grew up in southern Idaho, near Idaho Falls. This video shows my old stompin' grounds. I wish I had known more about what I was looking at when I was doing all that stompin'!

  • @robertmeyersMeyers-cm9fy
    @robertmeyersMeyers-cm9fy 7 หลายเดือนก่อน

    Your videos are great, I feel like I’m right there with you, so much great information, really appreciate your time and effort to produce these.

  • @bonniearmstrong6564
    @bonniearmstrong6564 ปีที่แล้ว +1

    Thanks Shawn for the tour of your area. I’ve always enjoy history of areas in the U.S., but at this stage of my life, I’m unable to go to these areas except by the internet by people like you. Again, thank you.

  • @cyndikarp3368
    @cyndikarp3368 ปีที่แล้ว

    Thanks for sharing your field trips. We do enjoy learning geology from you.

  • @GregInEastTennessee
    @GregInEastTennessee ปีที่แล้ว +1

    Great video. I've added the North Butte to my "Want To Go" list for when I get out there in August.

  • @brianpeers
    @brianpeers ปีที่แล้ว +2

    If google let me I would give this post two thumbs up!

  • @sdmike1141
    @sdmike1141 ปีที่แล้ว +1

    Thanks! Phreatomagmatic!!

  • @ja6995
    @ja6995 ปีที่แล้ว +1

    I feel so lucky to have lived in Island Park and currently live in Northern Utah

  • @gigistrus490
    @gigistrus490 10 หลายเดือนก่อน

    Thank you for sharing your knowledge. I'm absorbing best I can.

  • @charlierumsfeld6626
    @charlierumsfeld6626 ปีที่แล้ว +1

    Thank you

  • @stevewhalen6973
    @stevewhalen6973 ปีที่แล้ว +1

    Thanks!

  • @CitizenJane-
    @CitizenJane- ปีที่แล้ว +5

    Hi Shawn. Great video. I have a black, half oval sort of shape piece of rock that looks like it should be pumice, but it's heavy like granite. In the middle is a quartz crystal. You've just explained how it was made. Thank-you! As to how it came into my possession, I can't recall. But I am in Australia, so hopefully it didn't come from Menan Buttes !

  • @nycbearff
    @nycbearff ปีที่แล้ว +2

    The vegetation up there is varied and lush - I'd like to see your excellent video of a landscape like this unraveling the story of it's making, along with a video by one of your botanical colleagues, going over the same ground but looking at and describing the plants and their relationship to that landscape. And to be triply interesting, a video by one of your other colleagues covering exactly the same ground again, but looking at the wildlife, both big and small, that use it. Perhaps all three edited to be interleaved together - or just one after the other. Same place, different complex perspectives.

    • @marcellaobdrzalek8435
      @marcellaobdrzalek8435 11 หลายเดือนก่อน

      The YT channel 'Crime pays but botany doesn't ' does just that, links botany to geology.

  • @Cinnemax77
    @Cinnemax77 ปีที่แล้ว +1

    As always- great vid

  • @loisrossi841
    @loisrossi841 หลายเดือนก่อน

    I love a good story, thank you.

  • @laurenrobinson9219
    @laurenrobinson9219 ปีที่แล้ว +2

    Love your cool videos! Wish there was someone doing something cool like this in Pennsylvania!

  • @choppering
    @choppering 8 หลายเดือนก่อน

    Thank you again for the interessting video. You are a Good pedagog.

  • @michaelnancyamsden7410
    @michaelnancyamsden7410 ปีที่แล้ว +2

    Love these videos. Thank you.

  • @skagited9617
    @skagited9617 ปีที่แล้ว +1

    Thanks again, Shawn!! Very interesting! (and great to see more $upport...)

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว

      My pleasure. Thank you for your kind donation.

  • @rogercotman1314
    @rogercotman1314 ปีที่แล้ว +3

    Thanks Shawn, great video providing more information regarding what happens when magma comes in contact with water. 242 like ...... When temperatures get cooler, I plan to revisit some areas in LMNRA (North Shore Road) that possibly have similar geological issues.

  • @susiesue3141
    @susiesue3141 3 หลายเดือนก่อน

    😊 Thank you for sharing!

  • @alanl.simmons9726
    @alanl.simmons9726 ปีที่แล้ว +1

    Professor. enjoy your vids. I was inspired to obtain Roadside Geology Of Ohio. TY.

  • @earth2wendy
    @earth2wendy 20 วันที่ผ่านมา

    This is terrific-thanks so much! As you pointed out the Tetons your hand hovered above our house of 30 years. The north Menan butte is a hike we routinely do with visiting friends and family, relating as best we can the story of its formation using info we gleaned from the book Idaho for the Curious by Cort Conley, as well as an article in the Post Register’s Nature column, by the wonderful Terry Thomas, titled “Menan Butte was a huge volcanic explosion.” A highlight the smooth river cobbles embedded in the lava right up on the rim, and imagining what the indigenous people already present in the landscape might have seen over the reportedly four or so months during which the Menan buttes formed. You’ve added much to the story with this video, and you can be sure we’ll be referring to it again and again. We’ll undoubtedly make it required viewing for all future visitors! Your video on the City of Rocks was really helpful to our understanding of that geology as well. You have a gift for condensing some complex geological concepts into digestible bites for the uninitiated. Very happy to have discovered your channel!

    • @shawnwillsey
      @shawnwillsey  18 วันที่ผ่านมา

      Many thanks for your kind comments and donation. Glad to hear this and other videos are helpful to understanding this amazing landscape.

  • @mirandamom1346
    @mirandamom1346 ปีที่แล้ว +1

    It must be fun to see the world through geologist eyes!

  • @DebiBrady
    @DebiBrady 10 หลายเดือนก่อน +1

    Just discovered your channel as I'm following the increased EQ activity on Iceland that may be the precursor to another volcanic eruption. I will have to watch some of your backlog!

  • @d2sfavs
    @d2sfavs 7 หลายเดือนก่อน

    excellent video thank you shawn

  • @willhandy5345
    @willhandy5345 ปีที่แล้ว +1

    Thank you. Informative. I knew tuff, but I’d never heard of a tuff cone. Your clarity about phreatomagmatic eruptions rounded out my slightly vague understanding. Both the basaltic and quartzite zeoliths (also a new term for me) were fascinating.

  • @ichaukan
    @ichaukan 4 หลายเดือนก่อน

    I've been visiting Rexburg for work over the last few months. Driven by here a few times but haven't stopped yet. I'll make sure to make time and visit this feature properly in the future.

  • @DonnaCsuti-ji2dd
    @DonnaCsuti-ji2dd 10 หลายเดือนก่อน

    Thanks very interesting and well explained.

  • @JanetClancey
    @JanetClancey 6 หลายเดือนก่อน

    Fascinating stuff!!

  • @lorenmorelli9249
    @lorenmorelli9249 ปีที่แล้ว

    Excellent Presentation!!

  • @Reziac
    @Reziac ปีที่แล้ว +4

    Pulsating effect might be from ground water being steamed out and refilling until it again reaches critical volume.

  • @briane173
    @briane173 ปีที่แล้ว +6

    I'd think that even irrespective of the available water around the confluence of the Snake and Henry's Fork, the sheer size of the Snake River Plain aquifer that runs through there would provide ample water for a phreatic eruption at that location.

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว +3

      Yep. Likely groundwater was largest contributor of water.

    • @briane173
      @briane173 ปีที่แล้ว +2

      @@shawnwillsey I was _stunned_ at the amount of water in that aquifer when you went to 1,000 Springs. I was like wow, what CA would give for an aquifer like that one.

  • @normaallred7568
    @normaallred7568 ปีที่แล้ว

    Thank you, so interesting

  • @brianpeers
    @brianpeers ปีที่แล้ว +1

    Thanks

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว

      Thank you for your donation.

  • @shawnwillsey
    @shawnwillsey  ปีที่แล้ว

    You can support my field videos by clicking on the "Thanks" button just above (right of Like button) or by going here: www.paypal.com/donate/?hosted_button_id=EWUSLG3GBS5W8

  • @darrenmarney8577
    @darrenmarney8577 ปีที่แล้ว +21

    You are providing a great opportunity to learn geology Shawn & that's awesome when universities are not always convenient in the cycle of working life 😢 I just realised that donating Aussies dollars to US is economically embarrassing 😂

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว +10

      Thanks for your kind words and viewership. I really enjoy making these videoed and sharing with great folks like you. Thanks for your support!

  • @MyWoodpecker
    @MyWoodpecker ปีที่แล้ว +1

    Nice video Shawn. Enjoyed watching. Look forward to seeing the next video. :D

  • @v.skeggjoar7307
    @v.skeggjoar7307 ปีที่แล้ว

    I live on the coast here in oregon but I was born in Sun Valley and grow up in Hailey and Shoshone, and grandad would always take us to Redfish Lake and Alturas Lake on the boat for fishing. This was back when you could still catch the fish that redfish lake is named after, the Red Drum fish. I thank you for your show I have the worst case of homesickness, and unfortunately I'll never make it home again do to injuries received in the service. The hourglass' sand is down to the last few grains, but at least your show has shown me the beauty I remember from the 60s and 70s. Thank You!

  • @garysimon7765
    @garysimon7765 ปีที่แล้ว +1

    Bumps make water go fast and make rivers.
    Darn right, I subscribed. Very clear geological explanations

  • @Fryed_Bryce
    @Fryed_Bryce ปีที่แล้ว

    Beautiful basalt buttes, bro. Belching breccia. Behaving bees

  • @farmboypresents9977
    @farmboypresents9977 ปีที่แล้ว +2

    Really interesting, thanks. I noticed as you climbed that you have got rid of that pesky cough that was bugging you last year.

  • @Faelani38
    @Faelani38 ปีที่แล้ว

    An awesome lesson thank you. I definitely learned something new. I never learned about this type of volcano in my volcano class a few years ago.

  • @ThunderChasers
    @ThunderChasers 3 หลายเดือนก่อน

    I drove through here on the way to Yellowstone. Had no idea those were there. I probably saw them and didn't even blink. I'm going to have to make the trip again.

  • @mawi1172
    @mawi1172 ปีที่แล้ว

    I love it too! ❤❤❤❤❤

  • @alicemiller3139
    @alicemiller3139 ปีที่แล้ว +2

    Shawn, if you cracked open one of those xenolith bubbles of basalt, what would be on the inside?

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว +2

      More basalt. It’s a solid chunk of rock.

  • @alanclark639
    @alanclark639 ปีที่แล้ว

    Said it before but you guys are so damned lucky to have all that geology and space open to everyone - not only are we in U.K. limited by every inch of everywhere being owned by someone but a debateable number of Ice Ages rolled over the place eradicating many features and then the weather improved so much that loads of trees covered the place! All we are left with is a few quarries and the coast - unless you live near Wales or Scotland. Look forward to seeing more great country Shawn.

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว

      Thanks for your support and viewership.

  • @tthappyrock368
    @tthappyrock368 ปีที่แล้ว +1

    Thank you for the virtual field trip! I took a year of geology in college and loved it! My prof at BMCC took us on field trips that were out of this world amazing! Your video sparks a question: t. Hood is considered an active volcano. The part of the cone where it likely last erupted faces the Columbia and would be the path of least resistance if it erupted from the cone. While the Columbia is far enough that lava is unlikely to reach the river, what would the scenario be if did do that?

  • @darlenericotta
    @darlenericotta ปีที่แล้ว

    Nick Zenter teaches a lot of this as well. He teaches in Washington State, very interesting! Both of you are so interesting!

  • @IgorIglesias
    @IgorIglesias ปีที่แล้ว

    Looks like a great place for ham radio too!

  • @fredericklegrande4564
    @fredericklegrande4564 ปีที่แล้ว

    Snakes love it

  • @qiangwangwu6323
    @qiangwangwu6323 ปีที่แล้ว +1

    💯💯💯

  • @BretBerger
    @BretBerger ปีที่แล้ว +1

    The tuff with smooth surface near the summit is attractive. Any thoughts on the erosional mechanism? Wind?

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว +2

      Mostly water and freeze-thaw. Maybe a bit of wind abrasion but wind is almost always over hyped as an erosional agent.

  • @alexbradmckay
    @alexbradmckay ปีที่แล้ว +1

    Awesome videos. Thanks. What kind of camera and gimbal do you use?

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว +1

      Thanks. Glad you liked this. I use a GoPro for most videos.

  • @AndrewGrey22
    @AndrewGrey22 ปีที่แล้ว

    Thanks for right away pinpointing the exact location you are discussing. Many people do not do that leaving you wondering where the location is. And when do you finally get those dreaded braces off, brother?

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว +1

      Ha. I can't wait. Should be in a few months (crossing fingers).

    • @AndrewGrey22
      @AndrewGrey22 ปีที่แล้ว

      @@shawnwillsey Good news. My mom had them as an adult for quite a while. They really helped.

  • @56NeilWatson
    @56NeilWatson ปีที่แล้ว +1

    Thanks again Shawn. Would love to have a pocket version of you while walking in the hills here in the UK.

    • @mirandamom1346
      @mirandamom1346 ปีที่แล้ว +1

      Right?

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว +2

      That would be cool! I’ve often joked with folks about the “Pocket Geologist app”.

  • @therevoman
    @therevoman ปีที่แล้ว

    Just came out of Shoshone Lake in Yellowstone and was fascinated by the Geology. Could you do a segment on Shoshone? What really fascinated me was the obsidian sand beaches.

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว +1

      Will try to do this when I can.

  • @candui-7
    @candui-7 ปีที่แล้ว +2

    When will the next fissure eruptions happen in the PNW? 1000 yrs plus or minus 999 yrs or so?

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว

      Who knows? Something near Craters of the Moon is most likely. Your estimate and error bars are solid.

    • @candui-7
      @candui-7 ปีที่แล้ว

      @@shawnwillsey Thank you for my education Shawn. I love you.

    • @briane173
      @briane173 ปีที่แล้ว

      @@shawnwillsey The rough equivalent of aiming a golf ball at a hole the size of a swimming pool.

    • @candui-7
      @candui-7 ปีที่แล้ว

      @@briane173 I don't like risky bets.

    • @candui-7
      @candui-7 ปีที่แล้ว

      The yellowstone conspiracy theorists will lose their asses.

  • @haroldtanner9600
    @haroldtanner9600 ปีที่แล้ว

    West and north of the Menan Buttes are much older lava flows. There are also old flows east of the Henry’s Fork that form the foundation of the Rexburg bench. Perhaps some of the black chunks of lava mixed with the tuff were incorporated in the mix as the new material came up through the older lava flows.

  • @garyoconnordbaairrepair7775
    @garyoconnordbaairrepair7775 3 หลายเดือนก่อน

    Shawn Willsey. Have you ever do anything on Mt. Shasta and Mt. Shastina? If you have or have not. I used to drive a route from Sacramento to Yreka. I have always going to and from Yreka, I noticed a Mountain due West from Mt. Shasta called Mt. Eddy. I noticed something was odd about Mt. Eddy. Mt. Eddy has lost a lot of elevation. I have tried to find information on Mt. Eddy, but none have been wriiten about Mt. Eddy. From what I cannot find. Can you do a video on Mt. Eddy?

  • @jokerace8227
    @jokerace8227 ปีที่แล้ว

    Also, the Teton River merges with the Henry's Fork in the vicinity. Maybe back then all three merged closer together roughly in the Menan Buttes footprint area.

  • @charlesward8196
    @charlesward8196 3 หลายเดือนก่อน +1

    OK, paused at 4:42 to Google Earth the buttes. Wide, shallow craters, thinking lots of gas, maybe explosive, perhaps reacting with ground water in the basalt layers, looking at the rock, seeing white crystals, maybe feldspars, thinking maybe more dacitic than andesitic, certainly steeper sides to the cones than usually seen with basaltic fissure eruptions. Now, what is the REAL story? Back to the video.
    EDIT: The “basalt xenoliths” are vesicular, showing that they may be from the upper portions of a basalt flow, the cones ARE elongated SW to NE, the prevailing wind direction in that area, lending support to a steam and gas driven extrusion due to interaction with ground water, and expelled material being distributed downwind. The two cones seem to be aligned mostly on a slightly NW-SE axis following the trend of extensional faulting that has produced other basaltic eruptions in the area. Back to the video.
    SECOND EDIT: At 18:12. There was a short phase of the most recent Icelandic eruption where there were dense clouds of brownish ash being erupted pretty close to Grindavik that subsided after a a comparatively short interval, that were described as being due to interaction with ground water. I wonder if that new phreatomagmatic deposit could be described as palagonitic, and does it have chunks of vesicular basalt incorporated in the deposit? Or was it buried by subsequent flows and inaccessible, even after it cools off?

  • @mudgetheexpendable
    @mudgetheexpendable ปีที่แล้ว +1

    Was the Tongan eruption phreatomagmatic?

    • @shawnwillsey
      @shawnwillsey  ปีที่แล้ว +1

      Yes, but very different (much more explosive) magma composition.

  • @amariebeaubien
    @amariebeaubien 7 หลายเดือนก่อน

    the shape of this volcano looks very similar to Monte Gauro/corvaro and monte Nuovo in the Campi Flegrei Italy.

  • @mbowman4436
    @mbowman4436 ปีที่แล้ว

    My sister lives on the Menan Buttes.

  • @markburns3231
    @markburns3231 ปีที่แล้ว

    I wonder if uplift prior to the eruption may have temporarily impounded water upstream?