Righteous Episode As Always - Dig The Ever Changing Landscape During The Last Few Seconds Here - Way Cool Stay Strong , Cheers P.S. Happy New Year And All The Best To The Cats And Sarah

Hey, Steven. Great backdrop! 😊 Do you know the formation name? Also, question ...and I'm likely just misunderstanding, but... as I've experienced, stylolitic porosity as a secondary structure suggests pressure dissolution (diagenetic) more than subaerial exposure. Would you agree, alternatively, to term that surface as phytokarst? ... if, in fact, it is truly an exposure surface... ? Otherwise, yes, I'd agree the surface is a stylolitic surface, now exposed from exposure (present day). Does it show dark organic precipitates coating it, as well? Thanks for this video. Nice quick overview of the dolostone and the depositional environment (the stuff I love) that was its genesis. 😊 ... I also noticed you mentioned cherts. I work as a geologist for Bowser Morner, so chert is my life (largely), in the search for deliterious materials, on a daily basis, throughout client/quarry samples that come across my desk. Thanks again! 👍

We have Silurian Limestone bedrock throughout the Interlake region of Manitoba. Can find many fossils. It's exposed in places, the famous snake nesting dens of Narcisse are at the surface and underground. There are many caves, mostly cracks in the Limestone but it's interesting to imagine a larger undiscovered cave system.

I live in the middle of the driftless area along the southern end of the Kickapoo River Valley near Steuben, WI. The topography is dramatic. I follow Randall Carlson’s work and the river valley speaks catastrophic flood to me. The Kickapoo is an undersized river for the valley. I wondered if you had any particular thoughts on this region re catastrophic flooding. Any possibility the region could be the result of massive subglacial water flows where all till was effectively washed away?

I'm assuming this is from the Niagara escarpment?

Do you have any examples of the misciblity gap? Are there any places known to produce these??

I used to live in Michigan and climbed many times at Devils Lake back in the early 90s. It was an absolute joy to see the lake again in such detail. I have since moved to Oregon and this brings back many memories to an old climber. I'd love to see a video on the rocking top block of Cleopatra's Needle. May all beings enjoy happiness and the causes of happiness.

It’s just another magic we came up with to help us cope with life and how we have such little control of the world we live in . These ideas can be very dangerous too

Heya lets do that thing that I mentioned this coming year :D

It looks like Laurentia was really booking along between 1100 Ma and 990 Ma (far north to mid-latitute southern hemisphere) - its travel in the last 200 Ma created the Atlantic Ocean, which looks like a much shorter distance to have gone. 1. Is this right? 2. Is this because the proto-continent was much smaller (lower mass)? 3. Is this because the mantle was hotter back then? 4. Is there a different reason?

What material is it you're using, & has it worked?

OH YEAH DERE BUD

I also thought gabbro and agree, this is a coarsely-crystalline, phaneritic texture from beneath the surface. I believe it's a rock originating near the 'Moho-discontinuity' that separates the crust and mantle. Above this petrologic boundary, and beneath the 'sheeted-dyke complex', there are a series of layered gabbros that likely host the intrusion of rising peridotite veins from below. This type of rock is brought to the surface through the process of obduction, which occurs at subduction zones. The rock is essentially part of a mantle sequence juxtaposed upon the crust, called an 'ophiolite'. (Peridotite is an ultramafic mantle-rock and is a solution of three different mineral compositions, olivine, orthopyroxene, and clinopyroxene.) I'm not always 100% with interpretation, but I agree the identity is gabbro and the green mineral is likely related to olivine. It looks like there's been some oxidation...After further thought, peridotite "veins" suggests a later occurrence, and I'm not certain this would be correct even if such veins existed at this boundary. Perhaps something like chemical differentiation. Thank you for this thought provoking video!

Have you taken Hwy 21 to the east between Hwy 13 and Coloma? Really great spot there.

I found myself in an interesting predicament where immediately after graduating college with a geology degree, I started working for the USGS as a hydrologic technician and have done so for going on six years. Now I’m pivoting to a private sector consulting geologist role and will need to obtain the GIT cert asap. I’m basically going to have to go through and restudy every single topic as there’s a lot I’ve forgotten, but thankfully I love geology so all is good. 😂

I had a comment that did not post about how I think that you would be extremely interested in my findings that I discuss on my channel. They concern the evolutionary history of the Earth, the MCR, and many interrelated geology topics.

Looking forward to the episodes. Are you a professor?

Cheer~~~the last (or last two) of the Pleistocene glaciations of North America, approximating to the Weichsel of northern Europe.😊

I learnt this at geography class❤❤❤ Jesus loves you!❤✝️Repent “Come now, let us reason together, says the Lord: though your sins are like scarlet, they shall be as white as snow; though they are red like crimson, they shall become like wool”~ Isaiah 1:18

Here in N. Illinois we have almost no exposed basement rock, but we have glacial erratics all over the place. I love to investigate them and wonder where in the heck they came from! :)

It is the same with the 'you create your own reality' narrative. It sounds good on the surface, but don't tell me that children born into abusive homes or people facing wars, famine, illness etc have created their reality. My father was born into a war and had all his family die, facing horrible poverty and trauma like a child should never have to endure. So he created his own reality? Don't buy it. So with regards to 'karma' even if a person believes in previous lives, how are you supposed to learn anything from a supposed past life that you don't even remember it and all the 'bad things' you may have done? In this life, people learn from past mistakes they remember doing and hopefully do not repeat, if that makes sense?

Got there and subbed! Gonna share, who knows who's going to like these!👍🏼💙🥰✌

My phone hasn't been letting me comment, but I'm looking! 👍🏼💙🥰✌

If the suture (Niagara Fault Zone) didn’t exist after all, how did the orogeny come about? Also, would the absence of such a suture mean that Superior and Southern Provinces would just have been one single geological province?

Great video Steve!

Leucocratic for sure.

Hmm I hadn't thought about how the sea level variations effect where certain types of deposits are found in marine settings in hindsight its obvious but it hadn't crossed my mind! Anyways with regards to the introgression and regression and the siloclastic deposition shutting down precipitation I wonder if that had anything to do with how the banded iron formations formed back during the Precambrian? Obviously Earth was quite different back then but the same mechanical processes of erosion deposition and precipitation would have been in play even if they played out differently back then. As for the tectonic variations due to uplift and subsidence it probably warrants mention that erosion can also cause uplift in the case of crustal loading due to thick orogenic belts which create subsidence basins through the effects of their weight which means that as erosion removes that excess of rock it causes the land to gradually rebound. That is a pretty important piece of what is causing Everest and k2 to rise in the Himalayas as the peaks in that area are rising higher due to the deep erosional cutting of a nearby canyon/gorge system from the mountains. As for Basins they generally do fill in from sediment though the rate does vary based on the erosion and biological detritus feeding into a given depositional environment. It is one of the big reasons lakes ponds and inland seas which are no longer geologically active tend to disappear on relatively short timescales dependent on the size of the basin in question, unless actively restored to the landscape by processes like glaciers landslides volcanoes or structural subsidence basins in rift complexes etc. It is an important lesson which many reservoir lakes have to constantly deal with as without active dredging these dam reservoirs get shallower and shallower and either soon turn into wetlands or the weight builds up until the dams fail catastrophically. Thus it is natural that continental shelves should build up the same way. The only reason oceans don't experience the same thing is because the rate of deposition depends on the available mineral nutrients precipitates and sediment sources and as they age the crust gets denser due to settling and piling up sediment loading until it basically starts to subduct back into the mantle. I also was surpised to learn just how little time lithification of sediments can take given the right geological settings, for example the Cascadia subduction zone if entirely full of kilometers of sediment fed from the Cordilleran ice sheet and major outburst floods from the Columbia feeding an enormous thick turbidite debris fan which not only fills the trench but even crosses over the Juan de Fuca ridge onto the Pacific plate. Point is based on induced seismic measurement of the Cascadia subduction zone along its Washington and Oregon sections the sediment appears to have fully lithified into riding solid rock which means lithification has played out fairly fully during the Pleistocene feeding into the unique tectonic situation in the region. Lastly I have to glare at the whole paywall for knowledge I get you have to pay your bills but knowledge is inherently finite and scarce yet the fundamental resource for human innovation and progress/end rant.

An odd question: to join, I'm offered several choices: Basic, Middle, Advanced, and Other. For seeing the 2nd video, does it matter which one I join? I'm good with any of the levels, for what that's worth, I'm just not sure which is the most appropriate for me. I've not seen any of your lectures that are at too high of a level to follow (the classic example area where material is greatly higher than my level is anything that gets detailed in geochemistry, such as the "seds online" seminar)

Very informative, thank you

Most excellent Steve. You are really hitting your stride.

I have always considered lava to describe the melt, and used basalt or whatever for the solid form. A lava bed or a lava flow then is just one that solidified from lava. Either way, I don't think there is any real confusion out there about what is meant.

Great video. I’ve noted it’s standard fare for young earth proponents to get (fundamentalist) PhD’s to talk completely outside of their expertise and misrepresent the science. I guess it would be hard to get true experts to lie about their own field

So the solid material of the outer core is not considered magma?

Pushing merchs, is not science education. You lost me.

You have explained why context is important to Geological linguistics. Unfortunately the common usage of so many terms is all over the map, without precise context it's often hard to tell even what's being said. Fine job my friend.

Hey random question, but you just seem to have such a confidence and wealth of knowledge within your field. You remind me of a professor I had that used 4 textbooks during the semester, but would frequently quote them word for word with the page and paragraph number. It was just so obvious he was passionate about what he does and knew the material inside out. So my question is how you got to that point? I think you had mentioned being in the military in a previous video so likely a lot of experiences and time learning during all that. Did you just read a million books? Do you just live and breath geology? Both? Sorry for the book myself I've just been curious because that was something I instantly noticed about your channel. Been watching for about a year and honestly I think a big part why I always watch is because of your passion and energy in what you do. And I always learn a lot too! Absolutely fascinating the depth you're able to go to but still make it relatively simple to follow. I really wish more people posted content like that on here.

Y'all need linguists.

Hi 👋🏼 from i myself doubt many of these ancient human footprints that are talked about. I am a research chemist and have been one for 15 years. I also believe based on scientific analysis of archeology evidence, geological, biological, and astrophysics evidence that the accurately translated version of the Bible is a reliable historical document. I have just heard about this “evidence” less than 2 hours ago and have watched 4 videos on it, including some weird music video of a lady singing next to it….. but anyways I don’t find your analysis very honest scientifically and just very casual and you seem to be avoiding many key issues. You focus on formation of granite rock as we traditionally see it but leave no room for other ways granite could possibly be formed. Even the rather unscientific South African man in your video has another video explaining how formed granite can be mud. Which is completely true, and that argument he makes can be debunked using basic geological analysis. Now there are other scientific studies out there showing how this would be possible as well, which I found on just a layman cursory search on Published scientific database. You just barely mention after that metamorphosis and change rock post solidification. Obviously such change would leave evidence behind which we can see. Your very brief explanation for the hood covering the toes I see no great argument for and we would simply have to find other similar examples to disprove this. The other formations you circle surrounding the “footprint” look nothing like the “footprint” example. The “footprint” formation sticks out like a sore thumb. Also if you just watched other videos you would also see there appears to be another “footprint” formation on a boulder just about 10-15 meters in front of the one shown. I do believe these need to be accurately and adequately scientifically analyzed, and the crystal structures inside characterized under standard geological microscopy study. What I have seen in many cases of these footprints is we have a bipedal Dinosaur group walking and one other dinosaur steps in the same footprint and makes it appear to be a human footprint. But this one seems the most interesting to me and I think you did a poor job analyzing this.

Great lesson! Would the Wisconsin Magmatic terrane influence have had any influence on the Driftless? Thanks

Thanks for the history lesson. Speaking of history. What is the best history of geology book? Sort of in the form of "Ascent of Man" by Jacob Bronowski. Only this would be the "Ascent of Geology." Thanks.

Nice explanation.

i wana get some for my minnow farm, i hope i can get there on the uh thanksgiving break, maybe even get some brown trout for cooking

Happy B'Day mine's on the 20th.

Happy b-day! Hope you got rocks.

Happy Birthday!

Sabine complains that some theoretical physicists promote unfalsifiable (metaphysical) theories. She should just say that _____ is metaphysics, not "bad science" (metaphysics and pseudoscience are not science). I do not like the video titles either. It leads people to assume Sabine is anti-science. To appreciate her as I do, please see her videos on quantum consciousness and on doing your own research. I'd really like to know what statements of Sabine's you've found to be false or misleading. What opinions has she expressed that amount to science denial?

Happy Birthday 🎉