CWU's Nick Zentner from his home in Ellensburg, Washington on Thursday, May 21, 2020 during the global coronavirus pandemic. Tieton River Canyon, Goat Rocks Volcano, Tieton Andesite, Ghost Volcanoes, Royal Columns, Paul Hammond, etc.
Sorry I missed this live. I make it a point to never miss a Nick Zentner presentation. Nick, you are the reason I am going back to school at 54 years old and switching from engineering to geology, geomorphology, or volcanology. *Thank you, Sir.*
I live within 5 miles of the Royal Columns. In 30 years, I have never gotten tired of driving along Highway 12 and admiring the Tieton Andesite, whether headed up to White Pass, or into Fred Meyers. The rocks constantly change colors as the light changes during the day. I have been fortunate to listen to both Daryl Gusey and Paul Hammond talk about the area; and to see their excitement after a lifetime of studying these features just makes me excited. too. Thank you for this livestream!
To the unsuspecting in the live chat, tonight’s drinking word of “goat” seemed an unlikely choice, but this Aussie had done her homework..... Consequently, I am not allowed to choose the next one to allow drinking Zentnerds to nurse their raging hangovers
@@BarbaraRademacher I’m just the trouble maker. These lectures are early in the morning for me, so no drinking, but enjoy the Americans getting sozzled from my drink word
Near the end of this video you talk about not retiring, staying active. I am about to turn 69, and I am still employed as a full time math prof at my community college. I told my dean I was not going to retire and that he would just have to carry my body out of the building in a wheel barrow, and just dump me in the nearest garbage receptacle. Left him quite speechless.
Viewers, you want to see people's live comments/chats on your screen, and still can't here is what I found out. Can you see the black strip on top of your screen with the RU-vid icon on your left. On the right side of you black strip, it has a search icon and 3 white dots. I clicked it, then I saw "Desktop" as one of options on the bottom of it to click on. I clicked on it, then RU-vid switched me to the Desktop view. Now, I can see your comments on live and could chat, and Q & A if I so wish. Of course, Every tablet, phone would have a different versions... But, for my Amazon tablet, that how I finally got to the live chat.😁 Thank you Nick for trying hard to finish up your live stream with your lecture & beautiful photos.❤
So these lava flows are just down the road from your Mother's house The Basaltic Cinder Cones. Just an idea, which has probably been suggested elsewhere. The crustal loading of the ice sheet depresses the crust. This puts strain on the adjacent region. Allowing hot material to work it's way up from the subduction zone. The Stratovolcanoes provide the majority of the relief for heat to rise. The Cinder Cones are in areas surrounding the Stratovolcanoes merely provide minor stress relief for the region.
NICK, WHERE IS THE VENT IN CONNECTION TO THE LAVA FLOW. DID THE LAVA GET A RUNNING START OR ANYTHING LIKE THAT. ALSO WOULD THE FELSPAR IN THE LAVA MAKE IT LIGHTER AND MORE FLOW-WORTHY.
Wow! That huge rock just above the road looks like at some point, it could just move away from the hill and crash down. I have seen some landslide videos where something similar to this happened.
maybe you could take a sample of the andesite to a foundry and have them melt it and pour it into a difficult shape... if it fills, the viscosity must be low, yes?
About flowing lavas staying liquid a long time -- seems like it would have something to do with thermally insulating stuff on the top of the flow. Lava out front partially solidifies on top, maybe with insulating air pockets, and the lava coming behind it slides underneath the solid-ish sort of skin? Something like that?
I think my yard is landscaped with this rock. I was looking for a source and kind of stumped your people at the fairgrounds last year. I'd love to show my rock to you or Mr. Hammond. I grew up with Cowiche Canyon for adventures.
You really hit home here. Some of the rock is really soft and poor quality. Mr Campbell was my dad's age and his daughter was a twinkle in my eye, very doable.
Hi, Professor Zetner! I am from Brazil (Sao Paulo) and have been watching replays and some lives of your videos, from the beginning. I watched this episode and I confess I got a bit confused because I though only basalt lavas formed those columns. Anyway, thanks for your videos!
What Nick doesn't mention is lower down along Hwy 12 the Tieton Andesite flow pooled into a miles long wide ridge between Naches and Yakima known as Naches Heights. It is known as a recent wine grape growing region: www.washingtonwine.org/wine/facts-and-stats/regions-and-avas/naches-heights
I wonder if these flows are anything like the one from a Russian volcano on Kamchatka, called Kizimen. An NHK documentary here on RU-vid visits this volcano about halfway in. "NHK Russias Heart of Fire The Kamchatka Peninsula" is the documentary. It's also a rather understudied volcano, so this is the best example I know of. And yeah, these flows, discussed in this live stream, make me think of the Kizimen lava flow.
Just a thought, and may have been done already, but has there been LIDAR and/ or core sampling in this area? Seems that if there was some German Chocolate Cake underneath, you could see bits. On the other hand, could there have been a ghost volcano so massive way back it ate (melted) everything, and then eroded away and/ or was eaten by ice sheets/ alpine glaciers ( double whammy so geologically fast) so now a mere ghost?
If it eroded before the feldspar crystalized int the lava, that makes more sense, because it was full of holes like graham cracker crumbs or tephra. Just guessing what could have happened.
Fantastic work by Don Swanson, Paul Hammond and others, with a mystery...how the lava flowed 74 km, and then 52 km, without congealing? Now us geeks have something else to speculate or argue over. lol. By the way, I just remembered Nevada has swarmed before... in 2008. I'm not going to speculate or argue over that. 🤫 -fracking- 🤫
Wait, those cones in the Portland Basin on the map -- that's the Boring lava field, no? The Boring cones and shield volcanoes are related to all the other black dots on that map?
If the andesite magma was a higher temperature than usual (more viscous) and an unusual amount extruded in a short amount of time, down a narrow deep canyon... Perhaps it would flow much further than expected even with a higher silica content. Might signal a more extreme lava extrusion than the normal range. Large volume, relatively short duration...
Yuki Gatlin: Nick says they both went east down the Tieton River and Naches River valleys and almost reached the current location of the town of Yakima.
I believe you asked about glaciers at the equator .. Cayambe is an extinct volcano at The Equator in Ecuador at 18,000 feet and has a 22 square mile ice cap of glaciers that extend down to 13,780 feet.
Thank you for answering Nick's question about glaciers at the equator. Cayambe, however, has a 22 square kilometer (8 square mile) ice cap. (Source: Wikipedia: Cayambe (volcano).)
To further amplify about an area with unglaciated ghost volcanoes: Altiplano and Atacama Desert in Chile, Bolivia and Peru. Extremely dry and very few glaciers now. Ditto during the glacials as well.
The columns are the result of electromagnetically plazma charged magma. The Tieton Andesite literally grew along the electromagnetically charged latices of the Mineral, causing it to grow into columns while moulton, and toward the source of the plasma. Not unlike a Quartz Crystal, only perhaps overnight, and then to cool....
