Precambrian basement rock of Missouri: How deep does it go?

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In this episode of our series on Ozark geology, we explore the ancient buried surface of Missouri's Precambrian basement rock. Where can you see these igneous rocks at the surface, and are there metamorphic rocks as well? Do they extend throughout the state? How old are they? We draw on the Missouri Geologic Survey's Operation Basement to do some 3D modeling based on well logs and geophysical data, exploring what this ancient buried surface looks like throughout the state, and why it's important for complex future discussions about strategic resource extraction.
- Geology of the Ozarks series playlist: • Geology of the Ozarks
- All graphic design, mapping, and imagery by Ozark Outsider unless otherwise noted: www.ozarkoutsider.com
- Like this video? Consider leaving us a tip via Ko-Fi (no account required): ko-fi.com/ozar...
Other links:
- Operation Basement: www.usgs.gov/d...
- Popular Science article on Pea Ridge mine: www.popsci.com...
- St. Louis Post-Dispatch article on Pea Ridge mine: www.stltoday.c...
- MO DNR report on Pea Ridge mine: tinyurl.com/2m...
Ozark Outsider theme: sample from Rubythroat Reel (written and performed by Eric Reuter on hammered dulcimer)

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21 авг 2024

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Комментарии : 55

@ML-uu7wy 3 месяца назад

This is just a great video. I’m a greenhorn who loves round hounding in the Ozark foothills… found some stones that are completely different than the norm. Shallow limestone deposit can be the only explanation I can come up with .(I’m still very ignorant on the subject) Thank you for doing this.

@ozarkoutsider 3 месяца назад

Thank you! Hope you'll check out the rest of the series (look for the Geology of the Ozarks playlist).

@poketech7192 8 месяцев назад

Love the editing, and the one actor playing two roles via cutting was well done! Fascinating information as well!

@ozarkoutsider 8 месяцев назад

We had fun putting that part together, for sure.

@duggydo 8 месяцев назад

I really like the content, but the acting part was corny. I'm a crotchety old fart though.

@ozarkoutsider 8 месяцев назад

Thanks for the feedback. We spend a lot of time thinking about different ways to present information while entertaining viewers. RU-vid's a very different genre than standard lectures or writing. We may not always match everyone's desired style but doing something different now and then keeps it fresh for us, too!

@garyb6219 8 месяцев назад

I liked that part. Nothing wrong with a bit of Missouri corn.

@toughenupfluffy7294 8 месяцев назад

My grandfather worked for the Missouri Lumber and Mining Company, making products for the Current River Railroad in the Bootheel of Missouri, hewing railroad ties out of trees with a broad axe, in about 1914. He was payed 4 cents per completed tie.

@ozarkoutsider 8 месяцев назад

That's a great personal connection. Tie hackers were a major part of the Ozark story.

@am2dan 8 месяцев назад

Just found this channel and just subscribed. How could I not, owning books by Unklesbay & Vineyard, Beveridge, Weaver, and others. I'll be watching some of your past videos while waiting for new ones. 👍

@ozarkoutsider 8 месяцев назад

Thanks for the feedback and enthusiasm! Hope you enjoy digging through our archives as we work on new stuff.

@Idrinklight44 8 месяцев назад

Geologic wonder's and curiosity's of Missouri is a good book. Many many days, exploring the sites.

@ozarkoutsider 8 месяцев назад

We agree!

@shawna1981 Месяц назад

I really enjoyed your video it was very interesting ,thank you

@MarcoPollo77 8 месяцев назад

This is such a good channel. You have mystery, geology, data, visuals. I recently learned about the ancient landscape under the Columbia River basalts. So neat to think about what lies below.

@ozarkoutsider 8 месяцев назад

Thank you so much!

@robertwalker9663 6 месяцев назад

Very interesting. I’ve always thought it would be cool to try to reconstruct 3D maps like this with Well Logs. Did you do the data and model work or did you find it somewhere else? (Isn’t it funny how confusing those logs can be sometimes? Maybe it’s cuz I’m a bit color blind…)

@ozarkoutsider 6 месяцев назад

Yes, we did the modeling ourselves, using existing data. Well logs are so cool!

@BackYardScience2000 8 месяцев назад

Jusy discovered your channel and I'm loving it so far! I'm in Kentucky, just right next door and our geology is somewhat similar to Missouri's and they are connected in time and make-up. Over the last few yaars, I've been studying Kentuckys geology and a lot of our western geology goes hand in hand with Missouri's and your videos help me to understand the area a lot more. Thank you for posting and keep up the great work! You got a new sub from me and I look forward to more great videos! 😃 PS; If you ever want samples of Kentucky rocks, just let me know! I don't mind a bit to send small samples of our rocks and geodes. 🙂

@ozarkoutsider 8 месяцев назад

Thanks for your enthusiastic interest! Appreciate the offer of samples, too, but even our basement is only so big!

@jacksprat9972 8 месяцев назад

A+ video...great work and explaination.

@ozarkoutsider 8 месяцев назад

Thanks so much!

@richardeast3328 7 месяцев назад

Your videos rock.

@ozarkoutsider 7 месяцев назад

LOL, thanks!

@williamheimsoth4156 8 месяцев назад

Your videos are amazing. I want to know more about the missing time between layers!

@ozarkoutsider 8 месяцев назад

Thanks! We're looking forward to keeping this series going and getting to that and other fun questions.

@Idrinklight44 8 месяцев назад

Great video!!!!

@ozarkoutsider 8 месяцев назад

Thanks for watching!

@intractablemaskvpmGy 8 месяцев назад

Fortunes have been made by going through the tailings. One instance- a lead(?) mine was discarding a massive amount of silver ore without realizing it and an enterprising German immigrant did. He offered to haul it off lol

@ozarkoutsider 8 месяцев назад

Yeah, mining areas all over the world are being re-investigated for tailings reclamation, especially as technology improves. It's a great idea in principle. On the other hand, quite a few tailings piles from Ozark lead mines were simply hauled off and used for everything from road gravel to agricultural fertilizer. That's a story we intend to explore further in another video.

@richardminton1786 8 месяцев назад

@ozarkoutsider They covered those "chat dumps" when they came to the realization that children who lived down wind had lower IQs than their peers who lived upwind of them due to lead poisoning.

@garyb6219 8 месяцев назад

Great video as always. Any info from all those well logs to any shocked quartz being found or other telltale signs of meteor impacts?

@ozarkoutsider 8 месяцев назад

That's not something we're qualified to answer. We will be covering Missouri's various impact sites at some point, but can't say with any certainty whether any shocked quartz has been identified in well logs. It has been found near impact sites, but I don't know whether well logs were involved.

@twotone3471 4 месяца назад

Think you would see them with a gravity map, like what's under Cheaspeake bay. Love to find one, but alas, we have two sites, and one possible. Crooked Creek is the most visible, thanks to a road cut into it.

@VermontScaleCustoms 8 месяцев назад

My armchair guess is that the circular nature of the study area is that it's an ancient asteroid impact zone and it was filled in during the great melt off that created the plains and central part of the North American continent. Very interesting find. It wouldn't surprise me in the least to know that the Midwest was once entirely underwater with high peaks dotted across its landscape. Any cataclysmic occurrence could easily make it difficult to see immediately. But, with advancements in LIDAR combined with drill site data, would easily be able to indicate a more accurate picture of what took place over the last few million/billion years.

@ozarkoutsider 8 месяцев назад

With respect, we're not sure what you're referring to here. The Ozark dome is an uplift structure, and it's orders of magnitude bigger than the largest impact crater in Missouri (of which there are quite a few).

@sdub300 7 месяцев назад

What are thoughts on catastrophism?. Any signs of "sudden" movements?.

@missourimongoose8858 7 месяцев назад

Well now i know that amidon is as old as time lol dont know if u have ever been there but its all gorgous pink granite formations carved by the castor river

@ozarkoutsider 7 месяцев назад

We haven't been there but are well aware of it. Beyond the shut-ins, we'd like to explore the significant fault running through the northeastern corner of the conservation area, which seems to create a similar structure as the one we covered at Ha Ha Tonka State Park (see our video on the Red Arrow Fault). Thanks for bringing it up!

@missourimongoose8858 7 месяцев назад

@@ozarkoutsider it's a great swimming spot just watch out for cottonmouths and don't try and cross the river if you don't have 4wd lol I watched ur ha ha Tonka video and it was great, we have a bunch of those same rock glades and stuff here to and we actually get a tax break for keeping them clear for habitat for the endangered collared lizard, absolutely stunning creature if you get to see one there color is beautiful

@ozarkoutsider 7 месяцев назад

Yeah, collared lizards are amazing!

@markmcarthy596 2 месяца назад

So, it’s an ad for cobalt mining? The locals won’t let go easily

@markmcarthy596 2 месяца назад

Also EV’s aren’t selling

@ozarkoutsider 2 месяца назад

If what you got out of this was an ad for cobalt mining, I'm not sure what to tell you. Maybe watch the entire series to understand the story we're building? Also, the modern demand for minerals isn't just about EVs or green tech; it's necessary for the basic technology we're all dependent on (for better or worse) like smartphones. But this video is just one part of a long series on Missouri geologic history and its inextricable relationship with human history, which inevitably means discussing past and future mining. Full playlist: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-956b7Cdt5b0.html

@toughenupfluffy7294 8 месяцев назад

Not to gloat, but here in Western Colorado I can drive about ten miles and be looking directly at 1.8 billion year old rocks in the suture zone between the Yavapai and the Mazatzal Provinces. Okay, it is to gloat. lol.

@ozarkoutsider 8 месяцев назад

That's ok, in a quick drive here we can reach fantastic caves and springs! Even in a drought year like this one, we can gloat about a relative abundance of water.

@twotone3471 4 месяца назад

I do think the Metamotphic basement rocks of northwest Missouri were created during the Yavapai orogeny, and their border with the igenous bedrock of southeast Missouri is likely the border of Yavapai Terrane. So, we get some of that too.

@Idrinklight44 13 дней назад

Learn about Big Spring in Van Buren, not to gloat.....

@Laithshtieh22 8 месяцев назад

Where was the video shot at?

@joshr.4398 8 месяцев назад

Somewhere in Central Missouri

@ozarkoutsider 8 месяцев назад

Can you clarify which part of the video you're asking about? If you mean the part about the 2000' well "somewhere in central Missouri", we intentionally weren't more specific to preserve privacy of local residents in the area as the exact location doesn't matter for the point being made.

@MatthewHolevinski 8 месяцев назад

Older to the NW ehh? That's right Missouri, Kansas here, now you have to do our bidding little brother :)

@ozarkoutsider 8 месяцев назад

LOL, keep in mind that Kansas surface bedrock is mostly much younger than Missouri, though. But as a KC sports fan I'm all for keeping the peace between Kansas and Missouri.

@toughenupfluffy7294 8 месяцев назад

Kansas City Kansas, or Kansas City Missouri?

@BackYardScience2000 8 месяцев назад

@@toughenupfluffy7294yes.