Jerome has a lot of energy in his teaching. Fun to listen to. Thank you for sharing, Nick.

Thanks Nick.

Nice description on the horseshoe vortex mechanism. Easy to visualize and feels right.

Liking the BC connection. Thanks Nick.

Great video…..great lecture by Professor Lesemann. He is very knowledgeable and interesting!

Wow.... this planet is so fascinating... Thank you for sharing

These sessions are so informative.

Thank you for all you have posted. At 82, it has been a long time since I attended any geology courses (at Syracuse University). Even though I was a physics, computer science major, I have had as many credit hours in Geology as in PHysics. I thoroughly enjoy your KZread video and your pop up geology. THank you so much.

Thank you Professor Zentner

Snow Tire Boy!

That bit about the ripple structures, even on a flat surface, was an especially brilliant nugget.

Nice. Please do visit again Nick.

I kept hearing Gremlins instead of Drumlins, hahaha. Thanks for sharing these videos!

Good opening to the "Theory of Drumlins" and good questions from the class. Thank you Nick for including us.

I could visualise that so when you explained about the deformación Great class👍

Really enjoying these, and Jerome seems to know his stuff! What a great experience for these students!

@dawnzed2891

2 жыл бұрын

Only thing better would be if Nick could post the coords of these pull-offs in the video description so we can look on google and add stops to our vacation road trips when things return to semi-normalcy. Find a stop, play the video, look at the same things Jerome is referencing.. ya know :)

Like the Wisconsin shout out. We have the glacial drumlin trail as well as tons of effigy mounds with extensive indigenous history as well.

Thanks for the lecture and taking us with you

Hi Nick, geology junkie here from Alberta. Just wanted to let you know that the largest known erratic in the world is near where I live. THE BIG ROCK in Okotoks, inventive name eh?! It is part of the Foothills erratic train, and you can drive west from big rock and see erratics all the way into the foothills. I love your Okanagan videos, British Columbia has some fascinating geology and I love to drive from Alberta west through the Rockies marveling at all the wonderful roadcuts! Your videos have saved my sanity through covid and I can't wait for AtoZ Eocene. Thanks Shelly

I checked on bedrock (and other) drumlins, said to be formed under glaciers. Are the Central WA drumlins, formed by several massive flood events, instead of glaciation, categorized differently? It's really interesting to learn of these different situations! Thank you. Nick! 🤗❤

I wonder, has anyone considered potholing in the bottom of the glacier, instead of the ground?

This is a fantastic channel

I heard the magic "Penticton" word :)

Makes sense that drumlins would be shaped by fast-moving water! Just never occurred to me before!

interesting concepts about the way drumlins are formed. I think I like the erosional theory myself, it just seems to make more sense to me. Especially helpful with that idea was his description of rivers flowing around concrete piers and the erosion that takes place around those. Thank you once again for allowing us to tag along!

I have enjoyed this field trip series. I haven't thought about Reynolds number in awhile. I don't recall covering the horseshoe vortex so that really made my day. If I remember, an R number above 2200 dictates turbulent flow and below that is laminar flow.

YES! more BC eh! such good info for future adventures up North. Thank you Nick! and Jerome Lesemann! and of course students.

The bottom surface of an ice sheet would not be smooth. That would leave plenty of deformed surface area to cause current ripples in the water beneath it. Some of the drumlins might even be a reflection of the ice sheet that was above them. Thank you Nick! 👍

Hey Nick! Greatly appreciate a 'merkin' looking across the border for an alternative

These extend to Oregon? Or basically everywhere the ice flowed? Kids are not a questioning as your do!

I had to Google these locations after realizing Okanagan ( with the "a") is in reference to the lake in Canada and not the city Okanogan ( with the "o") in Washington state 😳

@dalehagglund

2 жыл бұрын

We Canadians make sure to spell these words differently just to confuse you. Tee hee... 😉

@albertawildcat3164

2 жыл бұрын

If its in Canada it usually has an "A"...eh?

😊🥰

Reynolds numbers and turbulence, beautiful. Muffler boy minute 9.

Jerome Lesemann Has it been determnded how deep the water under the ice sheet would be? I would assume that there would be variations depending on ice depth, material, temps. let you young smart guys figure it out. Thank you. Gpa C

Can your "Drumlin" expert respond to my issue? I am from a location called TUG HILL. I contend that TUG HILL is just a very large drumlin. It is acknowledged that it is formed of glacial till, but nobody has defined it as a drumlin. It is aligned North to South. It does have a basic shape similar to that of the bowl of a spoon. Much study has been done on TUG HILL, my geology professor did both his Masters and PhD work on TUG HILL. There is published a cross section which shows a tilted bed of bedrock rising to the North. It is as if what the glacier scoured during its southward decent was caught in the protruding bedrock and continued to follow the path of the moving glacier, until it melted, leaving a big hunk of glacial till in the middle of New York state. Anyway, i believe it meets the criteria outlined in the YouTUbe video on Drumlins..

Can't quite figure out where you are here but I'm guessing somewhere on Commonage Rd. Maybe I'll have to take that route to Vernon tomorrow instead of the 97

@dawnzed2891

2 жыл бұрын

That was my guess as well - Commonage Rd. Hard to figure out an exact location like the last video.

@rickmarosi4546

2 жыл бұрын

My guess would be 1/2 mile north of Tompson Lake on Commonage Rd

Why one explanation? Can't both be answer

@complimentary_voucher

2 жыл бұрын

Yep I think some are erosive, some are depositional.

@jeromelesemann1855

2 жыл бұрын

Yes, that's possible too. However, we *try* to find unifying explanations first (ones that might explain all characteristics/features seen in drumlins) , before reverting to multiple explanations. The risk with creating multiple explanations is that every time someone makes new observations that can't be explained by an existing hypothesis, they create a new explanation rather than testing the existing ones. You end up with so many options that none of them become helpful at understanding the process. All this to say that, in the end, it's entirely possible that there is more than one explanation for drumlins and ideally we would arrive at this conclusion after many iterations of hypothesis testing and refinement of the explanations. The follow-up issue would then be to try and identify how drumlins differ and which differentiation features point us toward one explanation and not another. The presence of horseshoe-shaped troughs in front of *some* drumlins might be one of these diagnostic features for one process over another, implying that another process might form some drumlins that do not have the trough - which is where your question was going!

Drone footage would be helpful!

Oh, my.. I missed THIS too... 😐... so good I can see it now..🤗... oh my... sorry didn't help support as a viewer number...

Canadian Nick is good, the Nanaimo dude is great

Is a rock drumlin a roche moutaunee ?

Mima Mounds ???

Jerome keeps using the term 'DM'. what is it?

@jeromelesemann1855

2 жыл бұрын

DEM - Digital Elevation Model... basically the big map showing the terrain features

Start your own channel.

I find the speaker is hard to follow. He seems to jump all over the place with different trains of thought.

Drumlins, eskers, West Bar, and giant pot holes in the scab lands - all tied in various ways to movements of enormous flows of water during ice ages. Did not know any of that until I subscribed. Now I can be the most dangerously boring guy in the room at holiday parties .... Nick, are you cheating when you let Jerome do all the talking? You didn't even speak up when he mentioned Wisconsin drumlins! "A-c-t-u-a-l-l-y, Jerome ..."

Snow tire Boy!

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