Nick Zentner | September 1, 2020. Glacial Till at Discovery Park in Seattle, Washington.
Пікірлер: 173
@jennyg44444 жыл бұрын
Dug fence posts in my yard a few weeks ago through glacial till. I saved as many rocks as I could, soaked them, washed them, made a little rock river in my garden. Rainier Valley in Seattle.
@alisonaddicks15844 жыл бұрын
I only grow rocks, since I live on a bench of glacial till above the Columbia River aka Lake Roosevelt. I pile the garden rocks, I throw the garden rocks, I cuss the garden rocks.
@rayschoch58824 жыл бұрын
My personal moment of triumph was recognizing the granitic nature of that pebble before Nick identified it as granite.
@lindachauvin9514 жыл бұрын
Me too!!!
@WildWestGal4 жыл бұрын
LOL! I know the feeling. Well done, you!
@deniseowen65824 жыл бұрын
I got the quartzite but was flipping around between granite or diorite.
@sueellens3 ай бұрын
Same!
@bagoquarks4 жыл бұрын
*ONE LESS THING* to worry about: I can still outrun a glacier; the 10,000 year head start is also comforting. Thanks for another informative session, Nick.
@claretdelgado44654 жыл бұрын
I never thought that I was going to get so much from your videos Nick. I couldn't become a geologist, because according to my mother I was to weak to be far from home. But your dedication and knowledge and selfless time sharing is making me feel like all that I missed I found it in your classes, lectures and road trips. I cannot tell you how much your connections mean to me, you can never imagine the feeling of being in the place I wanted to be for so many years. There are no words to express my gratitude for what you do. Thank you Nick. And I love you too 😻
@Ellensburg444 жыл бұрын
Thank you, Claret.
@claretdelgado44654 жыл бұрын
@@Ellensburg44 ❤️
@samhklm3 жыл бұрын
All of Nick's presentations are wonderful, but the field trips are special in that you can see the actual material. It really brings home the point of the lesson.
@petecooper37014 жыл бұрын
Yes Nick, I'm still with you, just like everyone else. And just like the others I'm loving all you do. Gratitude is a small word and hardly describes my appreciation. Thanks again. LOL. Pete on the Isle of Wight. PS We need a few more like you.
@neilt114 жыл бұрын
Check out www.nickzentner.com where you can find many of the PBS videos and many others.
@sharonhoward49574 жыл бұрын
I learned a lot thanks. All those bluffs from the ice sheets and so far South!
@jenniferlevine540610 ай бұрын
Wonderful video. Thanks for teaching us so well! It feels like such a privilege to go on these outings with you and to come away so well informed!
@susanstewart50424 жыл бұрын
I like the observations. Makes me be more aware of what I'm seeing.
@1234j4 жыл бұрын
Great stuff! Thanks from Jane in England.
@georgeemeny61234 жыл бұрын
I grew up on the west side of QueenAnne hill in Seattle, about 250 feet above sea level. Can't imagine 1000 feet of ice. I have a hard time wrapping my brain around 16 to 19 thousand years ago, too.
@gordonborsboom74604 жыл бұрын
Thought he said Queen Ant Hill for s a second
@JenniferLupine4 жыл бұрын
Thanks Nick! I’ve seen those bluffs for many years... now I understand them a bit better...great program! 👍👍
@MrChappy392 жыл бұрын
Thanks to Nick I now have a part of my brain filled with terms like: glacial outwash and till. I'm going to be right at home when the geology convention comes to town. Thanks to these lectures, I can see my surroundings in a clearer light. Much appreciated, Nick.
@lacking20104 жыл бұрын
We used to have property in Yelm, which you mentioned as the southern boundary of the ice sheet. The ground in Yelm is all rocks and very little soil. Very hard to garden with all of the rocks.
@gerbil_7964 жыл бұрын
Pretty interesting to me since I live on a hill south of Seattle on Puget Sound that is glacial till, so I can see exactly what you mean in my yard. Pretty cool!
@gerrycoleman72904 жыл бұрын
Continental lobe came out of Canada to the northern Olympics and created a dam. Creating a large lake in Puget Sound. This happened many times. There are many interbedded deposits of lakebed clays. As far as the pebbles and gravels go, when clean you should suspect outwash. When dirty you suspect glacial till. No clean rounded rock fragments in glacial till. The pebbles in the lakebed clays are the drop deposits you mentioned. Special situation.
@rozswartzett1804 жыл бұрын
I just had the thought that you are the “Mr. Rogers” of Geology. Probably not the first time that has been noted by someone who watches you. Blessings to you and yours.
@douglasgrant83154 жыл бұрын
More like Saint Nick of the Rocks.
@84Tacos4 жыл бұрын
Bob Ross
@vast58532 жыл бұрын
@@84Tacos Bob Rocks
@MrChappy392 жыл бұрын
Yes. A Mr. Rodgers with a bit of Bob Ross thrown in - "no mistakes, just a happy little glacial sheet moving in".
@stevew52124 жыл бұрын
thanks again Nick.. im learning so much
@absoluterefusal4 жыл бұрын
Thanks Nick! Yours has become my favorite show around. My wife and I are watching from Port Angeles, WA.
@royireland11274 жыл бұрын
thumbs up again. While not the point of the presentation, I enjoyed the introductory walk through Seattle.
@georgeemeny61234 жыл бұрын
He jumped locations pretty fast, half walk, half car tour.
@philodendron63 жыл бұрын
Bloody good teacher, right voice, interaction, and the requisite knowledge to present his science in 'a matter of fact' way.
@petematthews93463 жыл бұрын
I grew up just off the bluffs and beach near Federal Way. Used to make potter's clay out of the stuff. Spent hours and hours on the beach looking at the bluffs and the gravel that made up the beach. I think it seeded my budding interest in geology.
@lisahersch86194 жыл бұрын
Prof Nick. Thank you for the walking fieldtrip! Cool details and information about geology in washington state! Great! Have fun, I love pbs!
@lisahersch86194 жыл бұрын
These little rocks are so very old, special?, or just a rock?, do you put them in your pocket and take them home?
@geoffgeoff1434 жыл бұрын
As always, love hearing you talk through your thinking process. Helps me think in my area.
@douglasfur38084 жыл бұрын
At the wrap up to your observations there was a shot of rocks washed out of the clif there was a rectangular red piece of urbanite. Althou anthropogenic it is a part of the story as it was likely made of that same grey clay.
@WildWestGal4 жыл бұрын
Wow, another totally great episode, and more learning! And fully enjoyed the walk through that lovely old neighborhood! Thank, Nick!
@jericohen1204 жыл бұрын
Thank you I live on Long Island NY where cliffs run along North Shore protecting Sunken Meadow that's below sea level Noth Shore beaches are composed of similar mix of rounded rocks. Mid Islad artesian wells show layers of soil clay sand and stone. South Shore has sandy beaches with rounded stones and a Sunken Forest on sand bar Fire Island where sandy cliffs block the ocean from inundating the forest. Glacial action for sure!
@mikeweeks46694 жыл бұрын
Awesome we were at Dry Island Buffalo Jump our favorite fall fishing spot.Road is blocked due to wash outside.Still the upper parking lot had over 30 vehicles. The vertical gain to the the top is 350 meters in 1.8 kms..This looks the same on the bench about half way done the road.Please keep it coming, awesome. 😃
@markbell97424 жыл бұрын
Thanks Ned: Next trip to WA I has a S#$! load of places to visit. And so, 'till' next time, Cheers, Mark Beeunas
@theadventuresofsmokyq4 жыл бұрын
Thank you greatly, Nick. My wife and I own two crystal claims in Colorado, we're geology geeks. No school, but we're out in the field and many, many books. Along with other research outlets. We have a glacial deposit down the road from our house, we now know that it is glacial till. My wife is looking up the roadside geology again as I type this. Keep the videos coming - wish you could do a week long special in Colorado or something - but Washington's geologic history is fascinating, and some can be applied here.
@Tweakerbell528PhxAZ4 жыл бұрын
OMG Nick now your just teasing us with that beautiful view of the Space needle, and Seattle. I lived in San Francisco for 17 years and i miss it beauty and charm. Now an Arizonian, Phoenician specifically. Believe it on not there is a special piece of exotic terrain, green serpentine, under the Federal Mint on Market St. LOL
@medtek3 ай бұрын
I live across the canal from where you’re filming. I watched you film this! Now I’m a huge fan. Thank you for this, I’ve always wondered about the geology of my home!
@glacier684 жыл бұрын
Yeah, when taking my glacial geomorph classes in college, I found them to be tedious (I wanted to study 'live' glaciers' after all). 30 years later, my career has been almost exclusively in glacial terrain... Because of the poorly sorted nature, there's often a lot of textural variability even within till and ice-marginal deposits, which can make it tough to define boundaries locally. Troost, et al confirms that to be Lawton, with advance and/or till above depending on where you were standing. Thanks for sharing!
@charliesmith4072 Жыл бұрын
I love it! Nick managed to explore the geology of West Point without once mentioning the sewage treatment plant!
@MrFmiller4 жыл бұрын
I’m on the hillside south of Seattle on the west side of the Duamish valley (south of West Seattle on the Highline plaetau). The area is fine to coarse hard packed sand with poorly sorted rounded pebbles to cobbles and some boulders. That the sand is hard packed indicates some silt and clay content. It is somewhat dirty. I suspect the sand was deposited in outwash since the hill is across from Beacon hill closer to Puget Sound, which is a much deeper valley (channel). The river system probably intersected with the lobe and likely built up the plateau or at least where I am as a sand bar over the millennium, washing out most of the clay and silt.
@michaelmckeag9605 ай бұрын
At 14:50 I paused the video. I grew up in Seattle. At one point, in my early 20s, I lived in a cabin between the railroad tracks and the beach north of Seattle (about 50 years ago). I now live in the east Columbia River Gorge. But from time to time I have to revisit Puget Sound for waves breaking on a gravel beach, and the smell of creosote and kelp. The place we grew up in leaves an imprint that lasts a lifetime. But only 18,000 years ago it was totally different place. What will it become in the next blink of geologic time?
@bonblue49934 жыл бұрын
Thanks, Nick. That was really interesting!
@18Bees4 жыл бұрын
If I need an idea on a cool place to visit in Oregon or Washington I come to this channel ❤️😎
@walterward81642 жыл бұрын
My family moved there in 62 during the World's Fair.
@andrewmantle76273 жыл бұрын
Thanks Nick.
@germanchocolatecake71314 жыл бұрын
Thanks , Ned. I love you too.
@Raincentral0034 жыл бұрын
I've always wondered about the glacial deposits around Seattle. There seems to be very little bedrock around here in the central sound. Hundreds of feet of silt and clay. Check out photos of the "Denny hill regrade"
@angelathrall38964 жыл бұрын
Thank you, a favorite subject!
@SCW10603 жыл бұрын
We also have a tall light rust-colored clay bank at Point Defiance Park in Tacoma which has no embedded stones in it which is on the shore of Puget sound south of where you are today.
@bardigan14 жыл бұрын
Thanks again, Nick!
@paulscountry4564 жыл бұрын
Queen Anne is a nice neiborhood really,and walking distance to the action,huge erratics were blown up or used for fill during Denny regrade.
@PeterPenguin773 жыл бұрын
Fascinating! I live on a Seattle hill and I’ve wondered why those ice sheets as tall as 3 Space Needles didn’t just scrape all the glacial till right down to bedrock as the moved? Or did they not move? The soil in my backyard can be almost as hard as rock. Thanks for coming to Puget Sound... I’m getting addicted to watching your show. It’s a good therapy for covid lockdown... getting to watch you tromp around the hills of the Cascades. Thanks!
@ThePitbulllady14 жыл бұрын
Missed this one when it premiered because I wasn't feeling well so I had to catch it on repeat, but it was great, as always. Never thought a little round chunk of granite could be so beautiful! I wish I could watch the PBS episode but I doubt it will air here in South Carolina so hopefully you can upload it to your page, Nick, for those of us who aren't fortunate enough to live in the "Disneyland of Geology". Hoping that you and your family stay safe with all those wildfires in Kittitas County, too.
@neilt114 жыл бұрын
Check out www.nickzentner.com where you can find the videos.
@evtravels2 жыл бұрын
Perfect description, "Disneyland of Geology" !!
@danduzenski35972 жыл бұрын
Incomplete data, apologies. Liked the video.
@bradwilliams71984 жыл бұрын
Since the thinking is that there were multiple glaciations of Puget Sound, couldn't one glaciation's outwash get recycled as a later glaciation's till? So maybe the rocks in this video could have been rounded (e.g. in a glacial outwash) at one point in time and then incorporated into the clay matrix in a later glaciation.
@edweston80444 жыл бұрын
Across the water in S Kitsap. When walking through some of the trails out here I've thought of what you could learn from a cubic yard of the till I was walking on. There is some minor vulcanism in the county. Basaltic from small rifts? I did a minor in Geology from Oregon and always enjoy learning more on the subject. Thanx
@gerrycoleman72904 жыл бұрын
Don't forget about the interbedded glacial lacustrian clays with glacial basal till above and below the lakebed deposits. And of course, there are ablation glacial tills on top of the basal tills.
@ericramos34164 жыл бұрын
You were in my neighborhood! I raised my boys taking them to discovery park!👍
@radiofreeacab11 ай бұрын
Man that view from Queen Anne is really something 😮
@stanwatts94864 жыл бұрын
''Sorry Patrick''.....makes me crack up every time. Anyhow, if this were a lake bed deposit, with drop stones..wouldn't there be fossils within the clay supporting that idea?
@chuggingslurm4 жыл бұрын
My question exactly. Might be diatoms or something like that I would assume to prove the freshwater lake idea.
@johnnash51184 жыл бұрын
The Pleistocene ice sheet wasn’t the only physical presence with profound effects on the environment. Altitude in the NW was just as relevant to regional water flow, deposits and erosion affecting vast areas up to 700 miles South of the ice sheet; even altitudes >5,000’ in northern CA. @34% of the land area, >4500’ @37% of the land area in OR., and >4000’ @21% of the land area in WA. were locked up in ice for nearly 8 months until Summer. Other than the permanent ice sheet edge, there wasn’t a simple nor clear demarcation between the ice sheet and surrounding region for 8 months out of the year; indeed, much more transitional water was locked up in these vast areas than the periphery of the ice sheet. In this alien environment, seasonal river levels were in reverse of Holocene streams, low flow in Winter and extremely high flow in Summer. Whatever wasn’t buried under snow and ice for 8-1/2 months was flooded, eroded or buried under deposits for 3-1/2 months.The Northwest rivers, especially the Columbia must have had extreme seasonal flow differentials; they were locked up in glacial ice in late Fall, Winter and late Spring, thus having a much larger frozen reservoir of transitional water (compared to Holocene,) and then melting in extreme torrents from Summer to late Fall.
@stevenlester26064 жыл бұрын
The Grand Coulee originally began down close to Moses Lake and the Columbia flowed through that area. Over the many centuries, the Upper Coulee portion advanced north, not just because of the Big Missoula Foods but also because of the torrents that you describe. The Grand Coulee was then the route of the whole Columbia of the time.
@tanyanoel22034 жыл бұрын
Interesting segment about the lake being there.
@pengdu77514 жыл бұрын
used to live there when I first moved to Seattle. nice to see some story about it.
@neilt114 жыл бұрын
Don’t forget your going to have to walk back up that hill.
@katydidiy4 жыл бұрын
When my daughter had an apartment on Queen Anne Hill, we walked down and cabbed it back up😎
@neilt114 жыл бұрын
Excellent plan. It would take me a couple of weeks to make it up that hill.
@cyclicalcycler9934 жыл бұрын
Getting flipped around is my favorite now! Also the Geology is pretty darn good too id say:)
@inqwit1 Жыл бұрын
So much to watch, to catch up on, to learn. Enjoying the ride. Where am going, what is my route this late summer as I drive from SoCal to visit family in Spokane? Last year it was collecting minerals, this year tracking the sources, the geology that created those minerals. Marvelous journeys lay ahead...thanks Nick. So..., I think I was directed to this channel by watching Norily's journey through the Americas, and your mentioning her channel. Are you tracking her West Africa journey this year? That girl has gumption! You, my friend, have an unquentionable (sp?) desire to share the history of a planet in motion. Much kudos, much thanks.
@americanadventureoutdoors42134 жыл бұрын
The gold claim that I have in Oregon , is in glacial till that is loaded with rock and has some of the best gold showings on the claim .
@peterhamilton59464 жыл бұрын
Hi Nick! Cool video as usual! I've got two questions. 1) Would the much lower sea level of of the ice age have been a factor in the creation of the bluffs? and @)What gear are you using to create your on the fly episodes? Thanks!
@jeffbaran80364 жыл бұрын
Great show
@gerrycoleman72904 жыл бұрын
Your map shows the continental glacial ice sheet. There were many alpine glaciers coming out of the Olympics radiating like the spokes of a wheel. Some merging in with the continental ice sheet. How do you tell the difference where they come close to one another? Continental ice deposits have granite, alpine deposits coming out of the Olympic Mountains has no granite.
@melkel20103 жыл бұрын
7:34 pet rock adoption center. I'm so there!
@MetatronsWing2 жыл бұрын
Super good!!
@hestheMaster2 жыл бұрын
Was expecting muffler boy to go by in his boat there in Shilshole Bay! He sure does get around doesn't he?
@pengdu77514 жыл бұрын
this style of filming would make into a great interactive VR app or game
@garymingy86714 жыл бұрын
Can you cobble together a prototype? ( I'm not getting your vision thing..) plz explain more plz
@janhoffmann3374 жыл бұрын
Great. Thank you.
@keviny19364 жыл бұрын
Is there evidence suggesting the existence of Manastash Ridge type structures in Puget Sound lowlands that were eroded away by the glacial sheets coming south?
@jasonbabila6006 Жыл бұрын
You'll find the same thing along the coast all the way up to Mukilteo and Everett.
@lexiehuselton11453 жыл бұрын
I'm so happy to have found you! Now, if I could just find a Washington Roadside Attraction..... seems to be sold out wherever I search. Suggestions anyone?
@BudKnocka4 жыл бұрын
Terranes on the Brain!
@JasonJBrunet4 жыл бұрын
This video reminds me of how much I hate the town I currently live in.
@Eric_Hutton.19803 жыл бұрын
Anchors aweigh Nick. Anchors aweigh.
@DenverLoveless2 жыл бұрын
How about those rounded rocks? Stones deposited by the many rivers you spoke of? Then picked up by the glacier as it advanced which re-deposited them during the retreat? Why was the clay not scraped away to become part of the morain? Was there enough time during retreats for the lakes to recreate such thick layers of clay on the lake bottom?
@adriennegormley93584 жыл бұрын
"If I had a hammer I'd hammer in the morning....."
@dexplorer11143 жыл бұрын
Since the sea levels were lower during glaciation periods, I wonder where the Pacific/Sound boundaries were at the time.
@jackiesheahart82034 жыл бұрын
A visual clue to your direction, the needle is to the right of the skyscrapers.
@johnf33194 жыл бұрын
Why couldn't the ice have rounded off the stones? It's just frozen water. Ice sheet craves off rocks but eventually if they are transported to the bottom of the glacier they become rounded.
@buzzsmith81464 жыл бұрын
I recognize the Space Needle from the many Hallmark Movie Channel productions... (Did I just lose my "man card"? 🤔)
@sidbemus46254 жыл бұрын
AT 24:10 ; ROCK DADDY BE LEARNING THE GIZMO.
@StereoSpace3 жыл бұрын
Being an ice sheet along the coast, isn't the ice sheet going to pick up and incorporate lots of wave-rounded stone?
@KozmykJ4 жыл бұрын
If you see Meg Ryan out that way, be careful she doesn't spill your coffee !!
@markbrinton681511 ай бұрын
Living in Bellevue, what I want to know is what will happen in a large earthquake? I can't begin to tell you how many smooth stones are in the hard clay in my yard!
@MedPig4 жыл бұрын
Clay + Earthquakes = Liquifaction. You will NOT want to be in Seattle during an earthquake.
@georgeemeny61234 жыл бұрын
Yup we're all waiting for the Big One in western Washington.
@glacier684 жыл бұрын
Perhaps in the fill and alluvial areas of south Seattle or the Duwamish valley. Most of the city proper is on till or advance outwash, which had the aforementioned 3,000' of ice parked in it. It's dense. That said, yup, we have the earthquake kit...
@deballen3388Ай бұрын
Fascinating!!
@ginfonte33864 жыл бұрын
The rocks you're walking on do not appear to be washed out of the bluff as they are larger and not rounded. What are they and where are they from? Interestingly they are all of similar size. Except for some much larger ones.
@troymcmahon4884 жыл бұрын
Are the rocks from glacial outwash into the glacial lake and were similar stones deposited in other glacial lakes?
@Fiziologix6 ай бұрын
If the advancing glacier traps marine water as it cuts off the Strait, how long would it take then to convert salt to fresh? And is it solely through dilution with the always flowing freshwater rivers? Or some other way?
@patrickg13834 жыл бұрын
Sweet tevas 👍
@thevenbede7674 жыл бұрын
Wasn't the Puget Sound formed by the ice sheet????
@jasonhuntley99274 жыл бұрын
Well yes, likely it was shaped by the ice sheet. Look at how Bainbridge island is long running north to south. All the hills in Seattle do the same thing, and they were shaped by the ice sheets.
@mytube001 Жыл бұрын
My guess would've been reworking of outwash material into the clayey till after an advance-retreat-advance-retreat cycle.
@wrnchhead76 Жыл бұрын
Omg that’s the book I got! (Sorry to say this in two different videos but there it is!)
@billbwks3 жыл бұрын
those darn Canadians again!
@danduzenski35972 жыл бұрын
Need to add colors to that old map of yours.
@lorrainewaters61893 жыл бұрын
Wouldn't the stones be in layers of they were dropped?
@gerrycoleman72904 жыл бұрын
Details, details..........don't confuse me with the facts.....................Ice sheets does not retreat. They melt faster than they advance.
@KSparks804 жыл бұрын
Too late. I think you are confused already, if you think he means a retreating glacier starts flowing backwards, or back "uphill". It still flows in the same direction, but it "melts faster than it flows". That's pretty much the definition of a retreating glacier, and I'd bet Nick is aware of that. So where did he confuse you with facts that you agree with him?
@anaritamartinho134011 ай бұрын
In the country here i live i find gray clay near of the Atlantic Ocean.CLAY CAN BE IN THE OCEAN OR ONLY HAVE IN THE LAKE?