What Happened to the Spokane Ice Sheet?

Really enjoyed this lecture as a summary of the wonderful series you gave us last winter! Your work is amazing professor! Thank you for all you do for us and for sharing your passion for geology!

You know I have been around long enough to remember North Woods3D Making a pice with her 3D printer to help fix the black chalkboard way back when Nick was doin live streams from his backI yard.The first time I viewed Nick was one of his Downtown lectures It was the one about Mount Rainier’s Mud flows.I am glad I stumbled into this community of people . This is a special group of people we have here

How can we attend your classes?

Thanks Nick! Excellent summary of Spokane Ice Sheet part of the Bretz story. Looking forward to the others.

Nick I almost didn’t watch this because I thought it would be a revisit of the Ice Age flood stories from last winter (summer here in Australia) and it was. But it was so much more! It was an unfettered display of passion, admiration and diligence on your behalf and delivered in an unfaltering manner so that even without the Geology, it was worth watching.

Great presentation. You are a very good teacher and ask good questions. Wish I could have been there to meet everybody.

Good lesson! Thank you.

I'm from Pennsylvania, but lived in Washington for 12 years (1979 to 1991). I'm a STEM guy, and have taken some geology classes, but actually worked as a chemical technician. I am a graduate of The Evergreen State College. Later I got PA teaching certifications in high school science, and took 3 geology courses in the process.
Once I drove back to PA via US 2, instead of using the interstate.
I was driving along the south side of a large east-west trending mountain ridge. At one point I saw a notch in the top of the ridge to the north. Being curious, I took the road north, and up the south side of the ridge to the notch.
The sign said the notch was cut by melt water from the ice sheet blocked by the ridge before the ice dam north of Spokane finally broke.
Recently, I've looked for the notch on the internet, but can't find it.

Do you know of this notch? Where is it? Am I misremembering things? It was almost half my life ago, so I easily could be confused.
And thanks for all the Geology lectures!

Nick, I love your work and thank you. As a MN boy, I thought I had heard all of the MN/WI jabs - but the license plate one is new and hilarious!!!

Simply outstanding

Nick just gets better and better in his topics and energy for his work. Thank you, Professor.

That was a great presentation! I’m impressed that you have been an inspiration and confluence point for citizen geologists and historians, as well as the professionals. Very cool subject and very cool methods. As a Minnesotan I even learned a new Wisconsin joke, but hey! We all know the Wisconsin glaciation should have been named the Minnesotan. 😂 ❤

Traveling between Moscow, Seattle, Spokane and Missoula forever, this weight has been grinding on me for years!

I love that you can see the way the glacier moved and rotated along looking at the striations. On the right side they are moving fairly north/south, but on the left they are nearly straight east/west.

Given the length of GEOLOIC time the ice sheets lasted, what possible reason would one assume that all the major events would be temporally concurrent? Just a thought I had, but if you think of the ice as the ocean, it becomes so much easier to see the ebb and flow of the edge and how far it moves south.

The best geologists are storytellers. Your approach to looking for the story inspires me as I look at formations and consult the work of others to explain what I'm seeing. Until you can tell the story (with evidence), are you truly a geologist? Thank you.

26,000 great people wanting to learn from a GREAT teacher. Geology taught from Nick is amazing and keeps you wanting more. ❤

why is their scabland in the west but not in the east ?

Thank you for a free college education! I love sitting in on your lectures. I've always had a fascination for geology. I'm a rock climber and I always have questions, you help me answer them! Thank you!

Incredible to think someone from 1920 was able to view and extrapolate the information to explain what hes seeing across the entire upper united states. Without sattalite or planes for a top down view. Absolutelly incredible!!!!

Great class

I get a kick out of watching these while I polish rock slab tiles cut from glacial till. This time from the Carrabassett River in Maine. They're just regular rocks, but a very pretty assortment.

It's great to have these summaries of the massive info-flood that left me bewildered last winter.

I am deeply expressed by your work,. Your efforts to bring together professionals, avocationalists, and tie the work of your predecessors to the present is outstanding. You remind folks that cooperation, enthusiasm, and the search for knowledge, creates and deepens our lives and work. Hooray for your commitment, love of science and humanity.

Retired Trail and Bikeway Planner and Rockart Researcher

Yes back to the classic three green chalkboards!

I'm in southwest Michigan and we've got evidence of 4 different glaciation periods here, all one of top of the other. The last one is easiest to see from the terminal moraine at Kalamazoo as well as 12,000 year old dune systems now buried by topsoil and trees. (or that have been leveled for farming) that I've been hiking on for years.

I also lived on Lawn Guyland (as you pronounced it) and that's a terminal moraine and outwash. But, 50 miles north in Putnam County, there's still bedrock scraped clean as well as the famous erratics of NYC's Central Park. And, on Turkey Mt. in Westchester County there are scratches in the bedrock, easy to see, where the glaciers had passed/scraped over.

Wow I knew the ground around Seattle had been regarded. But I never imagined that it was this much

The biggest open-door of science I've seen. Every lecture and presentation has taught me too much to not love every moment.

My family has farmland in the Scablands just outside Harrington, and although the Channeled Scablands are something I’ve been interested in for years, it was amazing to see Bretz’ maps of the channels and be able to overlay it with the land features I recognize when I’ve been down there to visit. Thanks for these lectures, Nick! They’re greatly appreciated!

I really like how you present all the lectures to educate people like me who did not fulfill the education when we were young. Thanks very much for your time to do these!

Nick Zentner is one of those rare people who make learning fun!! I'm watching the second part right now!

He's back!

As a former resident of Spokane county, this video is cool

Nick, I am from MN but only an hour from Bayfield, WI. I just learned about their devastating 1942, '46, '51 and '53 floods on their historical page. Crazy!!!

Nick this one's for you. I live in Slatington Pennsylvania just north of Allentown and I have found numerous rocks and stones behind my house that have glacial gouging and scratches on them put the line that you drew doesn't appear to come that far south how do you explain the stones I found ? Also got some pictures of rocks that I think you might be interested in seeing

Have you covered Earthquake Point at Entiat?
How would you have titled it if you did?
Thanks, the Northwest is beautiful, you travel where others can’t.

Love Geology 😘

eskers? drumlins? moraines?
these are some of my favourite words.
not particularly useful in every day conversation,
but when I can, I do.

That was an amazing lecture.

Kind words are great ....and cheap ... I sent a bottle of fine single malt whiskey to Nick and his fellow Geologists .. perhaps you can do the same ... we owe him a debt ...something more than words.

Beautiful boulderfield at Clark Wyoming below the Clark’s Fork Canyon. Glacial outwash or just outwash?

You can see big glacier scrape marks from the rock it was carrying with it around that area

Fantastic. Nick Zenter truly shows his love and dedication to his field of study, a part of his life.

Enjoy your videos 👍.
I ❤️ GEOLOGY
just wondering if you ever follow Myron Cook.

You're an amazing person, Mr. Zentner! Thank you so much for your continued efforts to share the information you and your assistants have so diligently collected. Thanks also to your many assistants for their contributions! Thanks, too, to your family who puts up with your geopassion! You are an excellent role model.

It is one thing to see facts and figures. It's another to know what people went through to get that data. It puts a personal touch to the story of Mother Earth. Makes her more real and more personal to those of us who can't get out there to actually see and feel and touch her. Thank you for the history of the people who gave us so much. And thank you for bringing all of it to us. :D

Good old Broadway High School. I was standing in that building in 1965 when the 6.5 earthquake almost broke the building.
See those far right tall windows in the north wing, to the tight side? I was staring at those windows as they looked about to pop off the walls!
Our computer science teacher was late for out 10:00 AM class, so we were all standing in the hallway under those 1906 Era windows.

Always a great viewpoint. I thought there were multiple ice sheets and events, from my first interest in the "90's. So you are saying that the type of flood, melting ice varied from event to event. How many ice ages have been documented?

Midwest Nice!!

You are a very talented communicator and a wonderful teacher Thank you for sharing your wisdom and gifts with us all!