Thanks

@MarsGuy

Ай бұрын

Thanks so much for continuing to support this channel! Much appreciated and very encouraging.

@fr3ddyfr3sh

Ай бұрын

@@MarsGuy thanks for your invaluable work :)

One theory was that the big flow into Jezero was more slush and ice than running water. Like that hollow rock from a couple months ago, I wonder if maybe these were chunks of ice that got coasted in Mars mud as it flowed, but once it came to rest the water ice interior gradually fled, leaving the mud coating to slump into place.

@supersleepygrumpybear

Ай бұрын

38% gravity could also mean that water is more viscous than on earth

Sunday on Earth and we get to watch more what is up on Mars. Thanks Mars Guy! 👍💪✌

@dalphinezara7879

Ай бұрын

Yes

@MarsGuy

Ай бұрын

Happy to oblige!

This kind of episode trying to piece together evidence with experience from Earth geology really brings home how geologists work to understand the 'scene of the crime': Rock rot! Thank you Mars Guy!

@MarsGuy

Ай бұрын

Ah, glad you like the detective work!

@Sherwoody

29 күн бұрын

Or, there could be an exotic archaea population munching on the rocks.

@FredPlanatia

29 күн бұрын

@@Sherwoody

Thank you for calling it a working hypothesis so many these days would have misused the word theory it's why so many of our youth don't understand what it means

@MarsGuy

Ай бұрын

Glad you recognize the difference! Thanks for the comment.

One of the best channels on KZread. Thanks, Mars Guy!

@MarsGuy

Ай бұрын

Thanks for that!

Mars has no magnetic field so the solar radiation is intense. Could it be that, over the geologic time scale of millions of years, the radiation would cause the erosion? Glad to see your subs increasing!

@josephd.5524

Ай бұрын

Absolutely, but that kind of erosion doesn't cause the rocks to seemingly deflate; that's more like causing microscopic cracks on the surface that gradually cause tiny flakes to break off. These rocks look more like a potato that had been left outside all winter, it's weird.

@brucebaxter6923

Ай бұрын

Temperature variation would be far more likely

@coralie9469

Ай бұрын

@@josephd.5524 😄Interesting how potatoes seem to come into these comments and conversations, but they do look like that! It's all interesting indeed!

@oldmech619

Ай бұрын

@@coralie9469. Who is leaving potatoes outside all winter? I have never seen one. Can’t even think why would ever would do one.

@coralie9469

Ай бұрын

@@oldmech619 ohhh well you've never seen frozen potatoes or rotten potatoes, I imagine that's what they'd look like only worse, teehee!

Mars Guy used geography, geology and a chemistry lesson all in one this week!

@MarsGuy

Ай бұрын

Hope you liked it!

Will we ever know for sure? Always more questions than answers. Fascinating.🙂🙂

@TheShootist

Ай бұрын

particle embrittlement (neutron, cosmic ray, micrometeors).

On Earth it is pretty common for bodies of water to have cyclical periods of coarse and fine-grained deposition on the bottom. These layers can be covered and compressed for millions of years before being exposed at the surface again by tectonics, erosion, whatever. Then wind can differentially erode the softer fine-grained material and the coarser layer. I was just last night watching a YT item about rocks in cliffs surrounding my childhood suburb which showed this differential erosion.

Curiouser and Curiouser. As a chemist, this is intriguing. Great update. Thank you.

@MarsGuy

Ай бұрын

Glad you're intrigued, Chemist Guy!

Fascinating hypothesis! Always great to get my Martian geology lesson with my Sunday morning coffee 😁☕

@MarsGuy

Ай бұрын

Glad you enjoy it!

I think temperature cycling may have a lot to do with splitting up rocks. We have no experience with such extreme temperature cycling on earth . I try to imagine of those rocks just sitting there for 3 billion years - it is inconceivable amount of time. Almost enough time for rocks to evaporate!

Thank You Mars Guy! I wish we could have much more sample tubes. This one looks interesting!

@MarsGuy

Ай бұрын

Yep, too many interesting rocks!

Thanks for another great video. Your channel is awesome and I greatly appreciate your effort.

@MarsGuy

Ай бұрын

So glad you do, thanks!

OMG this is Unacceptable! Whoever's destroying those rocks have to STOP!

@DDodo280

Ай бұрын

There was these kids in my street who used to steal the little plugs on car tires, do you think they're responsible?

Thank you, this is great. A lot can happen over billions of years

Wonderful work as always. This channel's taught me a lot.

@MarsGuy

Ай бұрын

Great, thanks!

Excellent info. A timescale of billions of years is difficult to fully grasp I think. Making comparisons is a great aid for reasoning. It is a bit easier on Earth (maybe) because we can compare different formations against each other that formed at different times in different conditions and at different rates. Ancient formations can be revealed or concealed in a human lifetime. But on Mars? Those rocks have likely been sitting static for eons and may only have lost a couple of grains every million years or so. It occurs to me that on such timescales even cosmic rays might be sufficient to alter surfaces. Awe is an appropriate word for once. Like others, I marvel all the time that we can sit in our comfy chairs and look in detail at the surface of Mars. Your knowledgeable speculations add dynamism to what might otherwise be seen as an unfathomably barren place.

@MarsGuy

Ай бұрын

Thanks for the encouraging words! Really glad this has got you thinking.

Without a "renewal" process, it feels remarkable what lots of time can get done. Makes me think of the Iron mountain and the eagles feather definition of infinity.🤗

Thanks Mars Guy! You Rock! 🪨🎸

@MarsGuy

Ай бұрын

Ha ha!

I cant help but think of the hollow rocks from The Neverending Story. Rockbiter would be sad.

That's science.. more questions than answers! Love my weekly Mars Geology lesson. Thx MG!

@MarsGuy

Ай бұрын

Glad you appreciate both!

Always fascinating observations. This a real 'Dr. Watson' episode of Mars Guy. The question I'm left with is why are outer 'shells' of these rocks not as acceptable to 'rotting' as the interior? It's almost like the outer layer (even below the surface) was treated, or exposed to a process at some point after being broken from a larger rock formation. It's intriguing, as all sides, including the bottom exterior of the rocks has been hardened.

@MarsGuy

Ай бұрын

Good observation. There is a process of "case hardening" in rocks that may explain the outer shells. But water is still needed.

Another great video Mr Mars, thanks! It sure makes you wonder 🤔, why getting those samples is so crucial and exciting!

@MarsGuy

Ай бұрын

Thanks again. Keep on wondering!

Acid would be a good guess at the “rotting rocks” however there could be other explanations such as radiation or a drastic climatic shift.

That was fascinating, Mars Guy. Thanks!

@MarsGuy

Ай бұрын

Glad you think so!

When Mars had liquid water it meant that the atmosphere was thicker and so the wind would have been stronger and produce some of the features we're seeing in those eroded rocks, hypothetically.

If you look at most pictures of rocks on mars. You will see that they are layers which could imply that other normal looking rocks aren't completely solid. Could be a lot of sand stone deposits that change often

Asteroidal strike splash. And no surface recycling (Earth has tectonics and water) so the stuff from a billion years ago is still there. Asteroid belt is next orbit out, so much more impact activity.

Yeah my first thought was perchlorates+water. Some of the rock may either be older or simply have a different composition or structure that makes it more susceptible to this.

i think a far more interesting question might be why martian rock weathers at different rates, as evidenced by sand and stone in the same view. Since the slopes of Olympus Mons are homogenous in formation, even random weather would yield a more uniform degradation. Accounting for the variation in density at formation is an interesting notion.

heating/cooling weathering. a common process here on Earth as well.

Another great video

@MarsGuy

Ай бұрын

Thanks!

Thanks Mars Guy, interesting video

@MarsGuy

Ай бұрын

Glad you think so!

The puddle that ate the rock.

The very first Mars lander that took photos of the ground around it published in National Geographic showed frost on the ground in the early morning. There is water vapour in the air and at night time temperatures it freezes out. Repeated freezing and vapourising in cracks in the rocks might produce the effects shown here when combined with wind blowing away any small broken fragments during the day.

Super fascinating

Fascinating.

Wow, this rocks!

Incredible

3:20 Mineralogy class flashback!

With the low gravity, rocks will have some bizarre shapes compared to earth.

Reminds me of exposed Sandstone that crumble easily.

Wind erosion mainly plus acid fog.

I think the water is still around, it's just frozen at some depth which varies depending on where you are on the planet. Wind, creep, saltation and an occasional rockfall pretty much control the erosional process on Mars today.

Dried up slime mats. Not corroded rocks. A bunch of it is there. When a coy pond or bird-bath is wet for weeks or months, it grows a mat of slimy living stuff on the bottom. When it dries out, the slime cracks and curls up into shapes exactly like this. They have to drive it back and get a better look at those.

Interesting 🤔🎉

Mars guy is the one true king, someday there will be a colossal statue of you atop Olympus Mons

@MarsGuy

Ай бұрын

Ha! But thanks.

Excellent video....concepts are explained clearly. These videos should be shown in schools. So, in a way, some rocks are like really, really slow versions of Pop Rocks ...

@MarsGuy

Ай бұрын

Thanks for the encouraging words. Carbonated rocks are real!

Massive radiation.....😮

With lower gravity conditions, sedimentary rocks might not be as dense as those on Earth and more fragile to wind erosion, perhaps, as another contributing factor?

perhaps it's some kind of plasma phenomenon destroying the structure of the rock

I wonder if it could be unrelated material that accumulated in the depression of the eroded rock and then slumped when conditions like the wind direction or other factors changed.

Do we know how long the crazy current soil chemistry has been around? It's definitely aggressive enough to weather like that over geological timescales if it's getting into solution even occasionally, potentially excited by the radiation others have mentioned ... Fascinating

Unknown process? It looks like erosion to me. Mars has some pretty massive sand storms.

Mars guy we need a road to drive on

"Pasta shells" found on Mars by noted Martian geology scholar!

Absolutely weird

Cool 😎 👍

Could it simply be wind and sand and time, like you mentioned? Is there enough atmosphere on Mars for that?

Is there a 'mass flux' erosion element too? Mars has a much less effective ballistic shield than Earth does, which must mean more meteorites reaching the ground at greater speed?

Mars has metric shitloads of water, not "vanishingly small amounts" -- just not in liquid form.

Or maybe those were rocks that formed around ice or permafrost and after the interior melted, the exterior fell inward.

Could it be thermal erosions? Especially if water used to be present?

1:18 Obviously paper mache. The jig is up.

you need to ask that guy from TV with the brown suit and crazy hair - maybe ancient earthlings from a lost civilization went there and shot those rocks with their laser guns.

Thanks guy -Mars. Wait I mean thanks Mars guy

@MarsGuy

Ай бұрын

You got it

Yes, sure looks like some kind of chemical weathering and erosion of those rocks. Interesting coincidence that the present obliquity of Mars is similar to the Earth.

@hallowedbethynameyahuah7705

Ай бұрын

I'd love a list of space coincidences

Could rotting rocks produce caves ? Like limestone caves on earth?

Less "bould". 😂 Lol

@MarsGuy

Ай бұрын

Ha, glad you got it!

It’s things like this that remind me that Mars is essentially a radiated wasteland.. interesting for robotic exploration but why in the hell would it even be considered a viable idea to send humans to live there before setting up the Moon for example as a slightly more bearable habitat and much closer to earth should things go wrong…

A geologists dream exploration.

Ruh roh, rock rot!

I love these ingenious rovers and am impressed by the thought processes behind them, but geological processes are difficult to understand without geologists - i.e. humans. If we think the history of Mars is important, we need to have "boots on the ground". Then one can always ask whether Mars is the most interesting object in our solar system. Titan and Europa look more attractive.

Those are mummies of animals with no bones and castings of mummies that have dried to dust.

Radiation and little or no magnetic field my guess.

Try thinking UV Solar Radiation with wind blown sand. K.I.S.S.

Might the "rotting rocks" be composed of sandstone?

Sandstorms over millions if not billions of years will do that too?

0:58 Conspiracy theorists will say, "ALIEN MADE POTTERY! OBVIOUSLY"

Particle (neutron, cosmic ray or micrometeor) embrittlement

On Earth we know about bacterias, living in and from stone

I've only seen Mars represented as a desert. It's hard to believe that oceans and lakes existed there for **billions** of years. How exactly do we know if Mars even had enough atmosphere to keep the pressure for liquid water? Or is that deduced from the observation of water-affected soil?

@MarsGuy

Ай бұрын

Lakes existed on Mars billions of years ago, not for billions of years.

@Yezpahr

29 күн бұрын

@@MarsGuy I completely misunderstood 3:06, my bad. But I'm still interested, how long did lakes exist on Mars? I hear a lot of estimates from different places but what's your take on it?

@MarsGuy

28 күн бұрын

@@Yezpahr No worries. I think the estimate for the lake in Gale crater is on order of a million years, which seems reasonable given the thick stack of fine layers, but I haven't really look at this issue.

Not unusual for rocks to "rot" as we see that upon the faces of dressed basalt in the Giza plateau. Our Sun is fully capable of doing just that.

THE SUNS RAYS IS CAUSING THIS

A giant bubble of rusty mud eroded by tonic water and (weak?) sulphuric acid ... why not.

why does the wind only rot the one rock away why not all the others around it ? electric discharge my friend

How about the killing levels of UV light, and other radiation due to no atmosphere?

Hungry aliens. ♥

Mars not longer rocks... ;-)

Sublimation.

Rock-eating bacteria?

Alien engines did it. Mainly to support the algorithm on this channel.

I'll wager intense solar radiation. That's why humans will never set foot on that planet.

:D

HAHA PFFT

It’s funny when people talk about what they know nothing about.

@eustacequinlank7418

Ай бұрын

Carry on…

So far has the rovers encountered any hard rocks? It looks as if Mars is completely made up of course grained loosely compacted sand stone.

@MarsGuy

Ай бұрын

Lots of basaltic lava and pyroclastic rocks on Mars.