Ice Age Lakes between Seattle and the Cascade Range 

Nick, you're the teacher I wish I had for every subject that commands my attention. Thanks for being so awesome, and please continue expressing your geological passion

All this great information, and growing up in North Bend in the 1970s and 80s, I never learned about it. What a tragedy!! Thanks for all the great teaching!

I cannot get enough of these presentations and Nick is the most engaging educator one could hope for.

Every time I click on a cool geology video to watch the host is always Nick it can't be just a coincidence

Such a gift for us to when we live where we are at. Blessings to all relations and creations.

It's easy to spend a lifetime around Puget Sound and remain unaware of the remarkable geological history that created this beautiful place. Great job of packaging it all in a fascinating 18 minute video!

It's worth pointing out that Washington coal has always been crap. We used it because the alternative was shipping it in from the East (and still we did that for applications that required good coal), but the instant new technology (hydro, natural gas) freed us from King Coal, we dropped it like a hot rock. (Sorry, couldn't resist.) Great video as usual, Dr. Z! I learned so much I knew nothing about!

He makes geology so much fun! I have loved the subject ever since high school when I took geology as an elective.

Taking the illusional complex and breaking information into bite size amounts. SUPERB!!!

Excellent series ! We're still enjoying these videos in 2021 ! Thanks

I've never been so psyched to learn about rocks

4 years later (late to party, typical of me) I'm enjoying your use of a chock board. These videos are perfect! I miss washington while I was stationed at Whidbey Island.

This is gold content

Nick, another in a series of GREAT presentations! Seems I always learn new tidbits about the area, even with two geoscience degrees and spending half my life here and 20 years with the USGS. Bravo, you are one of the best teachers out there!

Always love your extremely good and educational video's. can't wait for the next one! Thanks for doing these.

i literally grew up in a house that overlooked that gravel pit, had no idea it had so much geological significance!

Mt Diablo in the SF Bay area on the back or eastern side had Coal mines " Black Diamond Mine" in the 1800s and early 1900s now a historical park land.worth a visit. Thanks for your interesting lecture and video

I really enjoyed travelling along ice age Seattle's surrounding !!! You have a unique presentation STYLE !!! 10/10 🏆

I live in the Renton/Newcastle area. It's great to see the history of the region. I'd wondered why the area between Renton and Issaquah wasn't more developed. Fascinating to learn about the old mines.

Gosh, such a fascinating history!

Very Good! Thank you. My father was a geologist for the USGS in 1949 to 1952 Then he was hired by Mobil Oil Co. I loved listening to him talk about rock formations in Colorado. He passed away at the age of 94 in 2015.

Nice to see you take your chalkboard on tour.

I've never been to Seattle and I still think this is interesting. Love this science passion!

Really enjoying all these videos. Thanks

I love the geological perspective I get from your vidoes. It really gives me a sense of how the human civilization we're so proud of is actually transient and very, very recent. And also it's amazing what people have learned by looking at rocks :) Thanks! A happy new subscriber.

my husband and i just found your posts and absolutely love them

Exciting series! Thanks!

Another great video! Would love to see you come up to Alaska and do something similar with the geology up here.

This is an outstanding video. Good to know the fascinating history of the Seattle area (and my home town Issaquah) landmarks that you drive by every day. Thanks so much for making it!

love your youtube channel keep up the good work, local geology is so freaking interesting love it.

love these videos man

I was looking for videos about Ireland & the adjoining areas during the last "Ice age" and its impact, when I came across a number of your videos relating to the same period around the Washington area. Phenomenally interesting & fascinating videos. I really need to visit the area. To call it stunning and interesting is a massive understatement. I have still to get through the rest of your videos & am looking forward to them, so please keep them coming. Your "Oseolla mud flow" lecture was a treat. the small "Corrie lakes" in the Cascades look very like the ones in Kerry. Beautiful.

Fascinating! And I live in Houston, about as geologically dull as it gets.

It's still trippy to me how me leaving Bellevue (80') on the way towards the mountains that the Issaquah Plateau are was not there but actually an entire gravel pit/almost mini mountain.

Well done!

Wonderful vid sir, thank you. I'm confident at least 95% of Puget Sounders have no idea of this dramatic creation history. Hope you were able to stop for a beer at North Bend Bar & Grill or maybe a malt at Scott's Dairy Freeze.

Sure wish we could have someone of Nick's caliber talk about the geology of Northern Minnesota. I just bought myself 40 acres of Highland Moraine. Definitely seeing erratics and a lack of layering. I have some boulders the size of large cars to study.... wonder how far they traveled to get there?

Glacial Lake Sammamish sure looks a lot prettier than all those cookie-cutter gated community McMansions

Fascinating!

I live in Ottawa Canada we have those rogue rocks everywhere. I went camping once in Algonquin provincial park and there was a big one there

Amazing geologic episodes. Thanks for sharing

This is just fascinating.

As Kirk says below, always great videos with great info. I wish MO had something like these videos.

When I was a kid I lived in Bellevue near the Bellevue Airport. In the woods NE of the runway there was a big white rock about 10 feet tall. It was either quartz or marble. A friend and I wondered why it was there and how it got there. Now I believe it was a glacial erratic. It was just north of where SE 28th would cross if it went through. A few hundred feet west of 161st Avenue SE. Today there's a business park there that was built in the 80s and 90s. I have no idea what happened to the rock. There were a few smaller white rocks in those woods too.

Great video! These lakes are all seriously worth visiting Fun info as a Seattle resident

reaaally fascinating stuff ! thx

superb as always!

Another great lesson. Thank You!! These are fantastic!

Just fascinating! Wow! What a great lecture!

Thanks, good stuff!!

I am loving your educational videos, I live in Anacortes. I love where I live, but I have the lingering fear of a massive earthquake. I was born and raised here, so this place is my life. Such beauty around here, and it was all created my mother nature.

I really enjoy your videos. Thanks for sharing...

Thank you! Very interesting.

I really enjoy these videos! 50 years ago you could have called this series "Highway 10 Rocks!" I live in Seattle now, but grew up in NW Minnesota, near Fargo/Moorhead in Hawley MN. Being from Wisconsin, my guess is that you've taken the US 10 route that passes through Hawley. I was wondering if you've ever explored the history of the Northern Pacific Railroad as it was routed through the Red River Valley past Buffalo River State Park. The Clay County Historian did this video last month where many of the same geologic processes occured as the glacial melting filled Glacial Lake Agassiz, right around the area that Highway 10 heads west past the park. In his video he talked about the HUGE problem the railroad ran into with "Quicksand" near the MN Highway 9/US Highway 10 junction. Have you seen other occurances of this near the deltas of glacial lakes? Thanks again for the great videos! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-tkHHwKR71QE.html

Wow, I needed to know this.

Drove across the floating bridge. There were lakes so clear, I would have the kids swim on one I would fish on the other end.Never the college students pull their van up all of them jumped naked. They could not do that in Alabama.

I love these videos!

The quarries bear a striking resemblance to the ones in BC where Stargate SG-1 filmed some of their episodes! Indeed.

Hey, Nick, I love your stuff. I would love to be able to send you some pictures and talk more in depth. I have been in the excavation business for going on 10 years now in the Puget sound, I've dug from 30 to 80 feet all around Seattle and came across a lot of different crazy things that I think would add to your research.

The guy that made dirt and rocks interesting

Good stuff

Thanks. The segment on Lakeside Sand and Gravel gave me a clue/answer to a question I've had about the steeply slanted sediment beds in high bank deposits along the western part of the southern edge of Green Cove here in Eld Inlet a bit north of Olympia. They must have been laid down by small, underwater landslides at the face of a delta. I’ll have to look at a topo map to see what the likely route would have been for the stream that created that delta, but it must have been related to current-day Green Cove Creek.

You were born to educate

Nick Zentner rocks

So interesting! I live here & find I know so little of the natural forces that formed & are continuing to shape my area.

It's great to see the Issaquah Alps highlighted. Love this series, are you considering a similar series for other roads? Highway 2 perhaps?

Suggestion: When you have interlaced source footage, use the de-interlace filter on it; it'll get rid of that 'combing' effect on (mostly) diagonal motion (like when the host moves his head and so forth). Great stuff overall though!

Thank you so much for all this fascinating information about the region I've called home for about 20 years now. It makes me feel almost guilty in a way for being less curious about it all! Thanks!

This is my extra credit homework. Yay.

Growing up, we would frequently have cave in's with houses bordering on Coal Creek Parkway around Newport Hills. People's back yards would disappear. We were always warned to watch where we walked as the mines were not mapped when exploring the woods. They allowed building in the 90's on the East side of Coal Creek Pkwy...that surprised me as the danger from cave in's still exist. The details of the Seattle fault where I-90 runs is fascinating. We would explore the caves in the Issaquah Alps as kids. Never knew L. Samammish was so huge though.

Grew up in north bend. This blew my mind! Explains so much. Have theirs changed much with regard to Younger Dryas impact discoveries? I heard there might be a potential impact site up north in Canada... heard that might debunk missoula flood theory too.

This guy is super....entraining but so interesting..

Well put together lecture & video. I find ice age geology fascinating. Having grew up in Minnesota I have seen some of the effects of the ice age in the lake Superior area. Do you have a recommended reading list?

Is post-glacial crust rebounding on-going, or has it halted? If it has stopped, how do we know, and can we tell when it did? Kind of off-topic, and yeah, I really should go back to college. This stuff is fascinating! Thanks, both of you.

ok wait i have been wondering about that weird plateau by mt teneriffe that you have to skirt on that narrow twisty road to enter middle fork snoqualmie. so it's moraine. but i think i missed in here why it's flat? I thought moraines were ridge shaped? so the continental glacier lobe entered from the west to the east, blocked the valley, and dropped debris into the glacial lake snoqualmie that it was containing, as it crept back west how it came? and the debris were spread out so nice and flat by the lake? and then the area upstream in the middle fork valley was carved out by... turbulence caused by the ice dam breach that carved out the steep valley used by the road into middle fork?

wow

@ 14:42 re: coal from 40-50 million year sedimentary formations. I assume the coal itself is much older than 40-50 million years, and it's just a remnant of a seam embedded in younger rock?

Issaquah's a beautiful area....now I know why they haven't developed it with the rabbit warrens that are littered all over the rest of the Puget Sound.

Wow, this was addictively interesting and answered a lot of questions in regards to my past observations (and creates new ones). I had no idea about the coal mines. I wonder if anyone has thought about sending UAV's down there to survey the tunnels?

any shows about the active volcanos like glacier peak or mt baker

Don't let Ken Ham see this.

Did the earthquake he was describing form lower Leana Lake in the Olympic mountains?

How are the lakes so blue?Rock flour. Grounded rock.

Great lesson! The coal distinction is a new one... to me that is. What is a Morain?

why wouldn't my College Geology Professor teach our 101 survey course this stuff at the University of Washington....

Hey Nick cool video as alwaysYou thought one on jade from wa

👍👍👍👍👍👍👍👍👍👍

There is no "the" in front of Puget Sound.

@8:28 that is the waterfall from Twin Peaks right?

What is the next video to this series? Where can I find the whole series in order?

or about the glacier silt mountains that gave way in the oso landslide

Gravel and housing and many things good

I have commented on several of your videos n the past few montns and watched many more. We moved to Idaho (Coeur d'Alene area) from San Diego this year and as an almost geology major (I made it through three semesters- thin sections did me in) I enjoy learning how the land we live on came to be. We lived in Seattle in the late 1980s for a military project with Boeing and many of out colleagues lived in Issaquah. This video is very enlightening about features I never noticed, but I was in my 40s then and at retired and near 70 I have the luxury of learning about what shaky ground we lived on. I'm glad we now live in Idaho where the geology and politics seem more stable. Have you done, or do you know of any videos about, Purcell Trench and Rathdrum Prairie, for that is where we now reside? Our route ( several miles north of CDA along Lancaster Road) to US 95 crosses the escarpment of an apparent basalt flow, but it has apparently flowed east to west unless this is a scarp from the Missoula floods. Thanks for the great videos, and I hope you get funding for more.

do you shows on snohomish county

There was also a landslide on the South West area of Lake Sammamish. The tree tops can be seen sticking out of the water. Don't water ski in that area... www.everyonestravelclub.com/kayaktravel-blog/from-the-archives-kayak-to-a-sunken-forest-lake-sammamish-wa

Wasn't a floating bridge built in the classical era? I remember something about a floating bridge built by the Romans.

did you just bring an entile chalkboard to the beach😭😭😭

The erratics mentioned in the video in the morraine at the edge of the Puget Lobe Glacial, could possible be xenoliths I'd say.

terrain is based

could you do a video on the ozarks?