Manastash Ridge Sandstone - GEOL 101 LAB

[@alexshaffer3819]

awesome. I spent the night up there as a trucker a few years ago. thanks.

[@Johnboy33545]

The grains scream out, "Free at last." Thank you, Nick, for your efforts. You reach all the way to the coast of Maine. You were an early pandemic discovery for me. I also watched your interview with Hannah, Jordan and their students today. Great stuff.

[@markbates3180]

Never to old to enjoy leaning when it's an excellant teacher. Than you Professor Nick

[@befuddled2010]

These presentations never, and I mean never, disappoint. Expert educator in his element making the obscure understandable. I am so grateful for theses presentations. Thanks Nick!

[@jasonlambert5552]

Ned Zinger's camera brings all the trucks to the yard

[@deborahellenberger7153]

Excellent! Fascinated by every moment.

[@biffnarzilla4649]

"Arkosic" sandstones. en.wikipedia.org/wiki/Arkose. And thank you! I haven't been in a college-level geology course in over 45 years ago and this caused me to draw on what I thought I had forgotten decades ago. Plus... the Covid-biased educational theater is great. This type of learning could never have been presented back in the early 70's.

[@stevenrogge7278]

Thank you Dr. Zentner for a very good lecture. It is fun learning about geology with you.

[@pekka5310]

LoL good humor ! Real field lesson feeling so priviledged and student all eyes and ears far from Finland. Thank you 😊

[@MountainFisher]

I never took geology in college as I took engineering and got bit by the biology bug and went back to college for biology, but in biology there is the biology found in fossils and that was the extent of my geology, studying how certain fossil organisms might have came to be. I have been watching Professor Zentner for a while now and really am enjoying his classes. I'm retired now and live in New Mexico, talk about your volcano states. There are several super volcanoes here plus many smaller ones. Last eruption was only 3,000 years ago, a Hawaii type eruption that left lava tubes that cavers explore.

[@eidrith493]

The timing is great for watching live from Australia (11:00 am AEST). Wonderful session.

[@CWS-h5z]

Thanks for these! I wish I had seen these Geol Lab field trip videos when I was watching Geology 101 online in 2022 from Southern Cal. Will now look for the others!

[@minimaker5600]

I learned more from this field trip than any other so far . . . great!

[@1MommaD1]

Hey.. momma d here from nogeology florida. I just learned so much.. again. How crocs are great climbing shoes for hillsides, and that my beer bubble theory might be true. As old as my brain is, it's still a marvel to me that in 10 million years or so, some geologist someday might crack my head open and say, let's put the light of day on this... What? It's a vesicle.. there's nothing in there!

[@keithwilliamson6311]

I have watched all of your "At Home" videos, and now all of your "On the Fly" videos. This is one of my favorites, as it clearly demonstrates the disciplined processes from detailed observation to careful interpretation. I am looking forward to seeing more of your videos. Thank you for sharing your knowledge!

[@geoffgeorges]

#1 vesicles, gas pockets- entablature. #2 sandstone 15 myo sand-dunes cross beds.- lake ? #3 pillows -lava flow into lake. Great episode!

[@sehuffman]

Takes me back to my Geology Lab 9 years ago! That was when I discovered how fascinating this field of study is. Instead, I pursued social work. I had my heart set on it. I don't hate what I do now, but I do wonder what it would be like to practice geology instead. Maybe it will be a second career in my future, or maybe it will stay my hobby.

[@Johnboy33545]

Do what you love. Find a way to incorporate it into your life. Thank you for your public service. We don't realize how short life is until we get old.

[@rayschoch5882]

For those of us who are NOT geologists, GEOL 101 field trips are great!

[@danielcho2698]

This was a great one! Thank you, Nick!

[@tanyanoel2203]

Nice bonus material about palagonite. I love these extra info nuggets.

[@JasonBennett1]

Thanks for giving me a destination - hoping to bike here from Seattle this weekend!

[@dyannejohnson6184]

Thank you Nick… I sure enjoyed your technique of teaching

[@marymarshall8052]

Thank you for making the Geology 101 Lab available to the general public. Now to wonder about the water and the event that caused the pebble layer.

[@douglasfur3808]

To me the "horizontal" beds look like the delta deposits you showed us at the Issaquah gravel pit. My theory, as Anne Elk would say, is that the water in which the lava pillows formed was a lake and these small layers are delta deposits from pulses of water washing them into the lake. The beds that are parallel to the bed are turbid mud flows in the delta deposits and are the "high energy" flows out of which the pebbles settled.

[@StereoSpace]

Had to delete my later comment, it was identical to yours.

[@josephlwallssr6166]

Very interesting, even if it is Geology 101! Lol! Thank you for your thirty years of dedication!🙂👌

[@robertcoplin2830]

Had a ball with this. Answered your questions with the very basic knowledge I've accumulated. Some right, some wrong. Great stuff.

[@irishall7324]

Makes us feel like we are in class! Thank you!

[@royireland1127]

Thanks again - Geol 101 is always more fun the second time round!

Fascinating conversation, Nick. Thank You!!! This brings me so many insights! I've stopped here on Manastash Ridge many times over the years on my travels to enjoy the view. Thanks again for the insights to geology.

[@tomwright9072]

Hi Nick, Haven't commented for a while but have been following all of your stuff this summer. Enjoyed it all but this was super informative. Certainly looking forward to more like it.

[@crowesarethebest]

That was fantastic. Enjoying these field trips, Nick.

[@janehallstrom7628]

This was a great episode! Love the concept of analyzing a landscape.

[@TeePole59]

Ya gotta respect a geologist that wades around in rattlesnake country wearing....Crocs.

[@marcussmart7673]

Chances are you will never be bitten or bothered by a rattlesnake unless your messing with it.

[@markvanleeuwen6678]

Many Brets to you! Great video Ned Zinger!

[@JenniferLupine]

Thanks again Nick! I think I will eventually catch up 👍👍

[@HiwasseeRiver]

Tiny pebbles...now I've got that Don Ho song in my head!

[@theresamcmullen4841]

So are you connecting the glacial lake flush with the pebbles? What episode would tell me the time frame? Large time frames of water evaporations on the sand maybe? Were the glaciers being built then? That’s a pretty handy spot for video sharing. Wonderful for educators.

[@WildWestGal]

The water exposure seems like a long-term event to me. I believe a flash flood, with the force it carries, would have brought larger rocks and boulders and disturbed the consistency of the sand, laying down rocks of varying sizes in a deeper horizontal band and not in that amazing thin line. Those rather evenly sized, smooth little rocks suggest to me an area in the water bed where the water was flowing consistently, continuously tumbling them, but not with enough force to displace them or cause piles of varying depth and size. Also, it seems to me that those horizontal layers in the sandstone would not be so close together and rather evenly spaced if there had been turbulent water flowing over them. It would have made a less uniform pattern and possibly wider bands, I think. Of course, I'm very new to geology in this fashion (although I have studied the patterns of rivers, their flow, the rocks carried in them, etc., and have spent a good bit of time in the high deserts of So.CA (my home State, now in So. OR) in my prospecting adventures), so that's just me trying to visualize my way through this! I LOVED THIS CLASS! Thanks, Nick, as always!

[@chromabotia]

Thanks for letting us audit Geology 101 field study!

[@maryseeker7590]

Enjoy these field trips! Learn so much!

[@rrrrrr12rr]

Visited this exact place today.. thanks to your episode. QQ- why sand layer is tilted by 30 deg. along with pebble ( jelly bean) .. while other half of sand layer is flat because of the reason you explain

[@samrotolo7303]

Thank you Nick I appreciate you for doing this.

[@evilcam]

Which river flowed through the area at the time? Also, if we could see the very top of the newest layer (which you said had long ago eroded away), would we also see evidence of air bubbles rising to the surface? And lastly, do you know what caused the water rounded pebbles in the sedimentary rock layer? Perhaps a flood or the river changing it's path upstream? I actually think I came away from this with more questions than answers, but that is how I like my science, and it means you're doing your job in teaching us how to think and do analysis, rather than just take the info and stop thinking about it once we can answer a question on a test.

[@dannyroberts3146]

Great episode Nick, ya gotta love it!

[@LDJSFGKJSFDOUKJ]

One of your better episodes, Thanks

[@jonnywatts2970]

Dang I just missed you by a couple days! Today, Sept. 1st, I drove home from Boise and stopped at an overlook. Suddenly I realized I was in the exact spot you are in this video. I hiked to the top of the ridge and looked at all the layers you looked at just in a different spot. So cool!

[@francesdielmann3278]

Great episode!

[@seanthorntonmd3908]

Nick, the upper basalt looks very similar to the Ginko flow you showed us on the east bank of the Columbia at Vantage. Do you know if this is the same flow, just uplifted 1700 feet and inclined?

[@1234j]

This new bloke, Ned Zinger, is just like that other bloke, Nick Zentner, in both looks and ability. Obviously twins separated at birth, and yet both have followed their heart and hammer into a world of rocks. With any luck they'll bump into each other soon. Excellent stuff from this new guy. Cheers from Jane in Hereford in England.

[@goodmorninggilw2836]

I love the way you were dress the new student potential. You have characteristics of a couple of the teachers that were my greatest. When you are speaking publicly and you refer to muffler a boy or train boy, it reminds me of my math teacher in high school. Math analysis… Every time someone screeched their tires to burn rubber my teacher would shout "Mail between the age of 16 in 18 years old!" I dug the way you said instead of hanging out in the parking lot and doing whatever, come on up here and take a look at these rocks… Or something to that effect

[@johnjunge6989]

Look like the pebbles found in our river's in eastern Missouri. They from rolling in fast moving water. Would they be that high?

[@jeromeaskay5338]

Beautiful place

[@kmagnussen1052]

Is this where you get some of the rocks for the bottom drawer? Also prevailing weather patters norther hemisphere is not likely to create strong consistent wind N to S or S to N. However if this was a micro climate say between two tall mountain ranges you might find this in very limited location. Outside the box.

[@sent4dc]

"This is your instructor, Ned Zinger" -- ahahahahaha!

[@guykarafa6742]

Loved it. Take away enough (too many) years and I'm taking this course. And if this had been there at the time , I'd bet Bing would have detoured for the view point .

[@richardmourdock2719]

Nick, With several other retired geologists looking forward to taking some early students to the geologist's paradise of SW Texas in March 2021. Good technique in your introductory explanations... Will definitely try to mimic it... :)

[@swirvinbirds1971]

I am guessing that 1st basalt layer was deposited on dry land since it is not pillowed or is it?

[@tadadams4668]

Are layers 1 and 3 different because of different cooling times?

[@otismilo1qaz]

Thanks again! This is great.

[@teresaballard2137]

Layer 2 Arkosic sandstone layered with some pebbles. Layer 3 Basalt with pillow basalt formed under water?

[@alanbuban9020]

would there be mudstones and silts in that arkosic sandstone or lime or mg. ?

[@benjaminneighbors6773]

Good evening profesor id like your take on esrth crust displacement theory and a good explenation on why the development recently of the mantle plumes rapidvgrowth and why doest fit the question on how the crust is lubed in order for it to work

[@Jack_rabbits_sage_brush]

Is there a place or source of the sandstone? I noticed there is not any big rocks in it. So does this mean this may have been a giant lake story? Because rivers carry large rocks over great distance. I am imagining an area that was something like the Great Basin story. And maybe as the lake receded it slowly deposited the sands on its heals? Very curious about it?

[@Slowmodem1]

Very interesting! But I think the pebbles or jelly beans have more to say in this story. Also, I wonder if the outcrop is 1000 ft up, is there a different level under level 1 or does level 1 go down for 1000 feet below the pavement?

[@jeffmyers7062]

outstanding!

[@Forever-into-Cars-and-Stars]

wife and I went to Richman beach on the west side and found the same basalt with bubbles. when could the bubbles develop because of water or ice age conditions in this situation?

[@tooligan113]

Nick an excellent virtual GEOL 101 LAB field trip. Very focused and great presentation of material. *-) ps. NO Tanqueray Gin bottles for the students A-HaHaHa

[@teresaballard2137]

At the top there is less pressure so the gases are able to escape.

[@kennethjackson4716]

Ned “Zinger”??!?! Did I hear correctly?🤣

[@richardmourdock2719]

Yeah, I hit the rewind too.... Leave it to Ned... err, I mean Nick.

[@biffnarzilla4649]

"Nerd Zinger"... that's a good moniker. 🤣

[@markhamilton4909]

Wow! So much at a Viewpoint stop. A creek flowing North to South? Flowing into what river system? Your best field trip yet, Nick. Thanks again.

[@markb9347]

Do the textural clues in the pillow flows concur with the textural clues in the sediments with respect to flow directions? Additional note: You were curious yesterday about the amygdules in the amygdaloidal basalts. Today's vesicular (bubbled) basalts serve as a good visual comparison example. The difference that makes the bubbles amygdules instead of vesicles is when they are filled with minerals, i.e. a mineral filled vesicle is called an amygdule. Zeolites are a common mineral group that can fill these voids, though not exclusive. When weathered out from the rock they can sometimes be redeposited as semiprecious agates. Some shores of Lake Superior are great hunting grounds for these treasured stones. I'm really enjoying your content professor Z.

[@todrobinson3733]

Could a desert push the jelly beans?

[@teresaballard2137]

Turbinite?

[@sirdudeness1386]

Thanks Nick! 😁❤

[@EllieODaire]

Literally watching this video from the truck parking lot.

[@mikeman230]

What is the yellow rock at the base of layer 3?

[@AnK5402]

He mentions it at around 38:50, says it is polagonite, a type of obsidian that as it weathers it de-vitrofies and breaks down to form that yellowish rock.

[@dordogne]

Nice job Ned!

[@teresaballard2137]

Great sample! Aphanitic basalt (crystals to small to ID).

[@mhansl]

My wife was all, “why do you keep saying pillows?”

[@douglasfur3808]

On th close ups the focus is on clear on the ground and not your hand. Maybe you could put the sample on a clipboard and frame the shot there... 🤔

[@scottmadd1]

Thanks "Ned Zinger" 😁 Is that a possible layer of ash between the pillows and the sand?

[@scottmadd1]

Good view at 37.13 min

[@terrycolberg6543]

Geology is a beautiful thing. Thank you Dr. Nick. So, how did that layer of pebbles get into the sandstone?

[@johnjunge6989]

No A.C. to fix, waiting on Nick! Get it on big guy!

[@KSparks80]

Anybody else get mad at theirself at some point in the video? We talked about, and knew, how the pillows formed. Thought about how layer 2 came to be. Then we got to the "b" line. Formed by river, or beach? The correct answer is...maybe. Ol' Prof. Zinger here has us open our mind to a different idea, and has us thinking "Yeah. That's it. Wind blowing over a sandy desert. Sure!" Then nails us with "but, the pillows? Had to be wet" Doh! (Curse you pillow structures!) It instantly felt like I'd been called out in class or chastised, in a gentle way, knowing the real meaning was "Waddaya doing back there? Nappin'? Pay attention, noob, and ya might learn something!" lol. Thanks for that old memory, Ned Zinger. If that is your real name!

[@ohHellnoyouwont]

My favorite professor , Ned Zinger...😂😂😂

[@adamlewellen5081]

Would love to see you explain what Randal it talking about. I know you have different focus of study but you bolth bring excitement to joe every man in geology. Have fun.

[@noelwade]

"...You Gotta Love 'em!" :-D

[@skyfacer9626]

I'm surprised there wasn't a variety of Zeolites in the vesicles of the Basalt of layer one. Not far from where I live in NSW Australia, there is a vast layer of vesicle Basalt that have a number of the common Zeolites in it.

[@KathyWilliamsDevries]

Skyfacer is your basalt related to the Aussie hot spot story, subduction story, or crustal extension story? Brisvegan here. Our basalt is hot spot 20-30Mya.

[@skyfacer9626]

@@KathyWilliamsDevries It's an extensive intrusion into overlaying sedimentary strata. Part of the intrusion is solid basalt with areas of vesicle Basalt. The solid basalt is often seen in columnar, roughly hexagonal shrinkage structures. It's dated from the Tertiary Period. Petrographically, the Basalt is Olivine Basalt with the occasional Dolerite as well. The Zeolites found in the vesicles are Natrolite. Chabazite, Heulandite and Stilbite. All common Zeolites plus a number of rarer ones. They are mostly white or pale orange in colour. It's a great collecting area.

[@skyfacer9626]

A further note on the Zeolites. There's not much in the way of high-quality specimens and these minerals often completely fill up the vesicles. However, when they are seen in tiny hollow 'geodes' the Zeolite crystals can be quite sparkly. Best seen with a 10X magnifying lens.

[@KathyWilliamsDevries]

So if it’s tertiary, less than 20 million? Related to when NSW passed over the mantle plume?

[@skyfacer9626]

@@KathyWilliamsDevries The Tertiary spans an immense time period. It began about 65 million years ago, following the Cretaceous period, and extended to the beginning of the Quaternary, about 2 million years ago. As far as mantle 'plumes' go, Australia has an entirely different Geological sequence of events. Australia is also a very 'worn down' island continent, Hence we don't have anywhere near the spectacular scenery that the North American continent has.

[@Sven-_Trials]

Some time in the future, It would be nice to describe what geology is happening today. Uplift, subduction, ect...

[@hughdanaher2758]

steve moye With an unhealthy amount of human generated detritus.

[@richardstephens3642]

When I saw those pebbles I thought they were plant stems because of the shadow

[@robertberg3944]

The reason that you cannot focus at extreme closeup may be that the lens can only focus up to a certain point. Wide angle lenses can focus much closer than a telephoto lens. However, they all have a limit. The lens that you can focus closest with is a macro lens. So you may want to hold a rock sample at least the minimum focus distance from the lens. The distance you are holding the rock samples is making me cross eyed!

[@teresaballard2137]

Layer 2 Maybe wave action, wind action or stream action.

[@markbates3180]

The aggregate seems to large for wind blown.

[@p4p3rm4t3]

High energy event. Landslide possibly.

[@mikeblubaugh8988]

Fan tastic

[@billy-go9kx]

Ned is at it again!

[@ericramos3416]

We are paying....* *attention

[@roberthammond6942]

Stands to reason if water makes cobbles boulders and everything else round. Why would it not make grains of sand round? What we learned when I was going through the ranks, is if one were to examine the Sand through a jewelers loop, one would find wind blown erosion to create angular and broken surfaces. Where the erosion by water creates rounded! Yea…

I'm thinking rivers because the rivers like Wenatchee and the Columbia have moved around a lot over the past few million years, yet obviously not the whole story.

[@geoffgeoff143]

Educational.

[@raylancaster5886]

Gotta be a first: Playoff basketball bumping into geo 101 lab.