How the World's Most Common Mineral was First Seen in 2014; Bridgmanite

Поделиться
HTML-код
  • Опубликовано: 18 май 2024
  • The most common mineral on Earth was not seen by a single person until its discovery in 2014. Despite sounding like an impossibility, the mineral which comprised 38% of our planet's volume truly was not discovered until that year. Known as bridgmanite, this silicate mineral exists deep in our planet's lower mantle below 660 kilometers depth.
    If you would like to support this channel, consider using one of the following links:
    (Patreon: / geologyhub )
    (RUclips membership: / @geologyhub )
    (Gemstone & Mineral Etsy store: prospectingarizona.etsy.com)
    (GeologyHub Merch Etsy store: geologyhub.etsy.com)
    Google Earth imagery used in this video: ©Google & Data Providers
    This video is protected under "fair use". If you see an image and/or video which is your own in this video, and/or think my discussion of a scientific paper (and/or discussion/mentioning of the data/information within a scientific paper) does not fall under the fair use doctrine, and wish for it to be censored or removed, contact me by email at geologyhubyt@gmail.com and I will make the necessary changes.
    Various licenses used in sections of this video (not the entire video, this video as a whole does not completely fall under one of these licenses) and/or in this video's thumbnail image (and this list does not include every license used in this video and/or thumbnail image):
    CC BY 2.0: creativecommons.org/licenses/...
    Sources/Citations:
    [1] Mindat, www.mindat.org/
    [2] Mindat, Bridgmanite, www.mindat.org/min-45900.html
    [3] Mindat, The Most Common Minerals on the Earth, By Jolyon Ralph, www.mindat.org/a/common_minerals
    Bridgmanite
    0:00 Minerals & Elements
    0:39 Bridgmanite
    0:56 Lower Mantle
    1:33 San Carlos
    2:23 Olivine Transition
    3:12 Asteroids & Chondrites

Комментарии • 279

  • @rogerj.fugere3570
    @rogerj.fugere3570 23 дня назад +268

    Bridgemanite, don’t take it for granite.

    • @hispid1
      @hispid1 22 дня назад +29

      Gneiss one

    • @medea27
      @medea27 22 дня назад +12

      Geologist humour has entered the chat 🤣👍

    • @thomaswhittingham4666
      @thomaswhittingham4666 22 дня назад +16

      Sometimes schist happens.

    • @jmwoods190
      @jmwoods190 22 дня назад +8

      ​@@hispid1 Ugh, I'm so igneous!

    • @ericryckman777
      @ericryckman777 22 дня назад +15

      When I was young, I was picking up the gravel in my uncles driveway.
      My uncle asked me if I was enjoying all the leverite on his driveway.
      I asked what is leverite?
      He said "leverite there!"

  • @shawnbottom4769
    @shawnbottom4769 18 дней назад +54

    "He just smiled and handed me a Brigdemanite sandwich".

    • @jameshatton4405
      @jameshatton4405 8 дней назад +1

      He said do you come from the land down under

    • @rocketmanzimm
      @rocketmanzimm 6 дней назад

      Thanks for clarifying the lyrics! I now understand the true strength from the land down under.

    • @HuckleberryHim
      @HuckleberryHim 6 дней назад +1

      That's what happens when you ask for no crust

    • @jameshatton4405
      @jameshatton4405 9 часов назад

      Veggiemite is an acquired taste that's for sure!
      There's certain times that a Veggie Sanga hits the spot just to give ya hiccups

  • @wiredforstereo
    @wiredforstereo 18 дней назад +22

    Just a reminder, asteroids do not float around in groups like in the movies. They are found at an average separation distance of nearly a million kilometers.

  • @StuffandThings_
    @StuffandThings_ 23 дня назад +100

    Its always freaky how much stuff is like, _right below us_ and we don't even know how it works. The vast majority of Earth's mass is in a pretty exotic environment, and we'll never really even get to see it. Its like how we know more about the surface of the moon than the deep ocean floor, yet even more extreme.

    • @haseo8244
      @haseo8244 23 дня назад +3

      And there are a ton of rarer minerals too.

    • @SrirachaChugChallenge747-jq7by
      @SrirachaChugChallenge747-jq7by 23 дня назад +2

      interrobang

    • @marcgottlieb9579
      @marcgottlieb9579 23 дня назад +1

      @@SrirachaChugChallenge747-jq7by No wonder Geronimo wasn't a good farmer :)

    • @rikk319
      @rikk319 23 дня назад +6

      Except that, considering how common it is, it's not as exotic as the stuff we stand on, which is more rare.

    • @aaronfranklin324
      @aaronfranklin324 23 дня назад +3

      It's certainly crazy how ignorant even the "experts" with the highest reputations seem to be, and the problem is they are the most likely to tell you they know it all.
      I mean, we know there is at least 10x as much water below the surface of the land and seafloor, but how many people are prepared to admit that this water is in the form of a supercritical ionic fluid with over 100x the high explosive energy stored, as the same weight of TNT.
      It's in the catagory of things even the most informed and intelligent, really don't want to mention to anyone. 😮🙄😵

  • @TheSpaceEnthusiast-vl6wx
    @TheSpaceEnthusiast-vl6wx 23 дня назад +26

    Thanks as always. The fact that an object (in this case, Bridgemanite) can be so common yet be discovered much later than would be expected is stunning!

  • @johnking6252
    @johnking6252 21 день назад +13

    Over 6000 different minerals? Damn ! Ya learn something new every day. Thx. 👍 He said in a monotone voice. 👍

  • @vhhawk
    @vhhawk 22 дня назад +34

    Another good reminder that all of life on Earth is a thin film of grease riding on the surface of a ball of heat and energy.

  • @dginia
    @dginia 22 дня назад +10

    I cannot imagine the curiosity that drives people who make these discoveries and observations. My hat is off to you all!

  • @user-uo9cy2ep2h
    @user-uo9cy2ep2h 19 дней назад +3

    "Like a Bridgemanite over troubled waters...

  • @rickkearn7100
    @rickkearn7100 23 дня назад +20

    Huh? Only here on GH would one become aware of such an interesting development.

  • @ClariNerd
    @ClariNerd 23 дня назад +18

    I didn't expect the iron catastrophy being indirectly mentioned in this.

  • @irmaoksanen6830
    @irmaoksanen6830 23 дня назад +9

    So much we still have to discover and learn about our planet.

  • @niklazz7037
    @niklazz7037 23 дня назад +11

    Thank you, this has been one of your best videos imo. Excellent presentation!

  • @thePronto
    @thePronto 23 дня назад +15

    Everything in this video (except maybe about diamonds) was new information for me. While that is great, I'm not sure how great it is, since having found the door to the Tardis, I know I have to go inside: and I'm not done finding out about the outside.

    • @user-ie1tz5rm8x
      @user-ie1tz5rm8x 19 дней назад

      Take a college class or two...this picture is painted in a broad brush , man doesn't drill this deep , it's all a little unknown. , at best

  • @xwiick
    @xwiick 23 дня назад +8

    Thanks for all of your hard work man!

  • @ts-900
    @ts-900 23 дня назад +93

    My theory is that Bridgmanite is just really shy and socially awkward.

    • @nils-erikolsson3539
      @nils-erikolsson3539 22 дня назад +2

      😂

    • @thomaswhittingham4666
      @thomaswhittingham4666 22 дня назад +1

      😂

    • @earkittycat5421
      @earkittycat5421 20 дней назад +1

      😂

    • @sgtbilkothe3rd
      @sgtbilkothe3rd 20 дней назад

      😂Well, it is under a lot of pressure.

    • @ts-900
      @ts-900 20 дней назад +4

      @@sgtbilkothe3rd Exactly. And I can't get it out of my mind that the Earth is crunchy on the outside and chewy on the inside with a jawbreaker in the center.

  • @TomLaios
    @TomLaios 20 дней назад +8

    What's with the echo and weird effects on the narrator's voice ?

    • @janjager2906
      @janjager2906 4 дня назад

      I could not finish the video due to the voice, it creeped me out.

    • @timknowlton1576
      @timknowlton1576 День назад

      Bad ai, I’m assuming. Topic and information interests me, but the craptastic narration makes it nearly impossible to follow.

  • @28105wsking
    @28105wsking 23 дня назад +20

    OMG! Un-obtanium!!!!

  • @quitequiet5281
    @quitequiet5281 21 день назад +3

    Awesome information and explanation!

  • @DJdoppIer
    @DJdoppIer 23 дня назад +9

    I know it's not named after the town, but it's kinda cool to know that this rock shares the name of my hometown Bridgman, MI.

  • @thepiper5522
    @thepiper5522 19 дней назад +8

    Is this AI or someone's real voice?

    • @Ann-rf8fi
      @Ann-rf8fi 12 дней назад +1

      AI

    • @user-gf8xi7mc9g
      @user-gf8xi7mc9g 12 дней назад +4

      Not ai, just a fantastically dedicated rock man

    • @thepiper5522
      @thepiper5522 12 дней назад

      @@user-gf8xi7mc9g Kewl, thanks.

    • @Power_Pulse
      @Power_Pulse 8 дней назад +1

      😂 I think he has a Corona running nose. 😂

    • @nozrep
      @nozrep 5 дней назад +1

      it is his real voice. He started the channel before all the AI voice stuff started.

  • @susiesue3141
    @susiesue3141 19 дней назад +1

    Thanks for sharing! 😊

  • @-Katastrophe
    @-Katastrophe 23 дня назад +4

    Check out that little magnetic chunk on that green rock.

  • @chris_hisss
    @chris_hisss 3 дня назад

    This is so cool! Thanks for sharing!

  • @mooredelira
    @mooredelira 21 день назад +2

    very interesting. Great info on the Olivine transition. Good illustrations. I thought the core is now thought to be made up of three parts, not just two parts.

  • @mmaximk
    @mmaximk 20 дней назад +1

    I love your explainers thank you so much.

  • @anitamitchell3452
    @anitamitchell3452 21 день назад +2

    Very interesting. Could we have show about meteorites?? Rarities to materials they are made of and what part of the universe do we think they came from?

  • @GWaters-xr1fv
    @GWaters-xr1fv День назад

    Great video. Explains many interesting scientific ideas succinctly and well. You can learn more in 4 minutes here than many hour-long lectures.

  • @derrickstorm6976
    @derrickstorm6976 22 дня назад +2

    Does 'stable at x depth' mean the whatever-mineral will be stable at the depth when forming?

  • @hifinsword
    @hifinsword 20 дней назад +2

    How is it that the 2 Feldspar minerals mentioned, composing 51% of the earth's crust, is a less common mineral that Bridgmanite that composes 38% of the earth's crust? Plagioclase-Feldspar by itself composes 39% of the earth's crust according to your own figures.

  • @aoilpe
    @aoilpe 23 дня назад +2

    Thank you for this new minerals video , the first one since a very long time…👍
    Even if it’s not in the Gems series 😂

  • @ThePrimaFacie
    @ThePrimaFacie 19 дней назад

    Ah this is cool as heck. Thanks for the vid

  • @bwhog
    @bwhog 21 день назад

    An interesting thought that elements have different stable configurations both at different temperatures and different pressures.

  •  22 дня назад +1

    Tack!

  • @RobertCraft-re5sf
    @RobertCraft-re5sf 18 дней назад +1

    I remember when they discovered Ringwoodite, a blue hydrous mineral. A large percentage of Earth's water is predicted to exist way down in the mantle as Ringwoodite. They made it and imaged it in a diamond-anvil cell.
    (Maybe I'm remembering incorrectly, the Science article said it contained water.)

    • @shanehumphrey4827
      @shanehumphrey4827 15 дней назад

      It is not normal water it is heavy water that is part of a living organism that actually does a self destruct maneuver that the egg pod survives and because it is lighter it rises. !! It has a thick gooey heat protection coating known as it. And they are so clear you cannot detect them they are so weird of a creature. Science just wont acknowledge their existence because they did not put the time in to Prove they actually do!!

  • @treborg777
    @treborg777 20 дней назад

    A good idea for a video (maybe already made?) would be to discuss the lab/theoretical basis for how we know the conditions for forming different minerals, particularly deep mantle minerals.

  • @glasslinger
    @glasslinger 20 дней назад

    Very good! This subject is rarely covered in daily life, even for engineers!

  • @biogeopaleo2736
    @biogeopaleo2736 23 дня назад +4

    What about native iron?

  • @rustyevolution6298
    @rustyevolution6298 22 дня назад +10

    This is the perfect speaking voice to listen to if you are trying to fall asleep.

    • @nozrep
      @nozrep 5 дней назад

      lol that’s why i usually watch his videos twice😅

  • @robertrobert7924
    @robertrobert7924 21 день назад +5

    In Australia, what is the relationship between Bridgmanite and Vegemite?

    • @sgtbilkothe3rd
      @sgtbilkothe3rd 20 дней назад +3

      😂One is impossible to eat, the other resides in the mantle.

    • @paulohagan3309
      @paulohagan3309 18 дней назад

      He just smiled and gave me a Vegemite sandwich.

  • @abj136
    @abj136 18 дней назад

    I now understand that Bridgmanite only forms under intense conditions such as occur in the mantle. I don’t understand why it’s believed to be the only formation in the mantle.

  • @jimslancio
    @jimslancio 19 дней назад

    Information on the crystalline lattice structure would've been interesting.

  • @prjndigo
    @prjndigo 23 дня назад +1

    pair-i-class periclase like pyroclase pyroclastic its one of those tough ones

  • @RegisMichelLeclerc
    @RegisMichelLeclerc 16 дней назад

    I remember there was a lot of olivine in the sand in Saint-Pierre de la Réunion. Might have something to do with the 3 volcanoes on the island...

  • @brotherandythesage
    @brotherandythesage 22 дня назад +1

    Okay, now how do we get at it and what do we use it for?

  • @evlkenevl2721
    @evlkenevl2721 16 дней назад

    "Have you seen the bridgemanite?"
    "I ain't seen the bridgemanite!"
    "Where's that confounded bridgemanite?"

  • @chriskeen7174
    @chriskeen7174 22 дня назад +4

    We just discovered this stuff but we know the makeup of the materials beneath that layer... How is this known since it can't be observed as well?

  • @steventurner8428
    @steventurner8428 22 дня назад +1

    So to get a sample, digging a hole with a shovel in my backyard is not an option. Bugger!

    • @brigidsingleton1596
      @brigidsingleton1596 21 день назад +1

      I take it your hypothesis is:
      An English / British man's home is his castle, his garden is an experimental laboratory...? 🤔🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿❤️🏴󠁧󠁢󠁳󠁣󠁴󠁿🇬🇧🙂🖖
      (Sorry - I don't know what the flag for N.Ireland looks like - if you do, please show me). 😏Thank-you. 👍🙂

  • @swainscheps
    @swainscheps 22 дня назад

    2:15 woah! What’s the average megatonnage of a kimberlite pipe?

  • @thekinginyellow1744
    @thekinginyellow1744 19 дней назад

    3:38 The destroyed protoplanet hypothesis for the formation of the asteroid belt has been discredited for at least 20 years. This somewhat, but not completely undermines the thesis of this video.

  • @hg2.
    @hg2. 20 дней назад +5

    Can't take the voice.
    Is it for real?

    • @nozrep
      @nozrep 5 дней назад

      yes, it is his real voice. He started the channel before the “explosion” of AI generated voices that has happened within the last 2 years

  • @rosskstar
    @rosskstar 9 дней назад

    ain't nothin wrong with my love of Bridge man... aight?!

  • @Mark_Williams.
    @Mark_Williams. 4 дня назад

    Most abundant would be the word I'd use, not common. If it's not easily accessible, it's not common, by definition, that's rare.

  • @degariuslozak2169
    @degariuslozak2169 4 дня назад +1

    What tillion?

  • @RobertWilliams-mk8pl
    @RobertWilliams-mk8pl 4 дня назад

    Remember the hull of the Doomsday machine on Star Trek. I live on the East Coast with crazy traffic, and I would like for the body of my pick-up to be made of something even tougher than that materiel (I forgot what it was) and a Bridgmanite windshield. With a racing stripe.

  • @tobystewart4403
    @tobystewart4403 День назад

    RUclips is notorious for theories being reported as a discoveries.

  • @Joey4rox
    @Joey4rox 18 дней назад +1

    Bridgmanite is abundant but not common.

  • @wiseSYW
    @wiseSYW 16 дней назад +1

    eventually will this help us predict earthquakes maybe

  • @takeruyamato6703
    @takeruyamato6703 14 дней назад

    660 km beneath the surface. The most common mineral on earth but we will never see it in our lifetime.

  • @chrisshorten4406
    @chrisshorten4406 12 дней назад

    The mineral of Kaladin Stormblessed.

  • @tommytwotacos8106
    @tommytwotacos8106 17 дней назад

    Neat.

  • @rogerdudra178
    @rogerdudra178 15 дней назад

    Greetings from the BIG SKY of Montana.

  • @GangGang1
    @GangGang1 23 дня назад +1

    Whats ur favorite mineral?

  • @northerniltree
    @northerniltree 22 дня назад +6

    Sextillion tons got my attention.

    • @2fathomsdeeper
      @2fathomsdeeper 17 дней назад

      Pervatologist!

    • @nozrep
      @nozrep 5 дней назад

      lol

    • @nozrep
      @nozrep 5 дней назад

      @@2fathomsdeeperwell, i mean, diligence and study are very important things!😅

  • @Ferrochrome12
    @Ferrochrome12 19 дней назад

    Peridot mentioned.

  • @stupadasol5911
    @stupadasol5911 19 дней назад +1

    If I was STONED would I better understand what I just watched?

    • @nozrep
      @nozrep 5 дней назад

      well this is a good question because you could apply the five steps of the scientific method to your question. Ask the question, formulate a hypothesis and then, experiment, experiment, experiment!! What is the result? What does the data show? Oh… inconclusive. We must perform the experiment several more times in order to gather more data to make a decision on.😃

    • @stupadasol5911
      @stupadasol5911 5 дней назад

      @@nozrep I like your logic, however I'd need to build a "wayback machine" to transport me back to my 60's.

  • @raylopez99
    @raylopez99 16 дней назад

    they could have asked those people who live in the hollow earth to bring some bridgemanite to the surface.

  • @MemphiStig
    @MemphiStig 18 дней назад

    So did we already know it existed, but couldn't find it? Or was this totally new info to us? You left questions on the board! (So do a part 2)

  • @Meant2BVegans
    @Meant2BVegans 20 дней назад

    🏆So Good

  • @WavidDebb
    @WavidDebb 16 дней назад

    So, can we build bridges out of it?

  • @NicholBrummer
    @NicholBrummer 15 часов назад

    I thought this is just a kind of Olivine.

  • @paulmaxwell8851
    @paulmaxwell8851 14 дней назад

    I was sure surprised! I thought bridgmanite comprised only 2.169 sextillion metric tonnes of the Earth's mass. I guess I should have stayed in school!

  • @fredygump5578
    @fredygump5578 18 дней назад

    Feldspars comprise 51%, which is less than this mineral.

  • @lisadavie5282
    @lisadavie5282 19 дней назад

    What a Gneiss observation!

    • @nozrep
      @nozrep 5 дней назад

      oh no you didn’t😂

  • @1TakoyakiStore
    @1TakoyakiStore 8 дней назад

    Ferropericlase sounds like the name of a Greek philosopher.

  • @jimslancio
    @jimslancio 19 дней назад

    Silly me! I used to pronounce the "t" in peridot.

  • @donaldduck830
    @donaldduck830 22 дня назад +3

    I would prefer it if such speculation would be made obvious as speculation. We have no way of measuring or examing Earth's core and mantle directly, so everything is based on seismic waves and meteorites. This is very circumstantial and I am not ready to accept this as gospel.

    • @miri-dz9oy
      @miri-dz9oy 17 дней назад +1

      Same here. Thank you for making this comment.

  • @SmithsMuseum
    @SmithsMuseum 15 дней назад

    Man they ran out of all the good names after like granite, and marble. Like bruh.

  • @MartinMMeiss-mj6li
    @MartinMMeiss-mj6li 19 дней назад

    Just because you find a mineral in an asteroid, how can you infer that it is also deep in the earth?

  • @Mp57navy
    @Mp57navy 22 дня назад

    ROCK and STONE!

  • @brunnomenxa
    @brunnomenxa 23 дня назад +1

    2:07 Is this an insect next to the index finger?

  • @RichardLucas
    @RichardLucas 19 дней назад

    "I will kiss him and love him and squeeze him and hug him and call him 'George'."

  • @EdwardM919
    @EdwardM919 23 дня назад +1

    How much of the gold is trapped in core because of the density.

    • @nuguns3766
      @nuguns3766 23 дня назад

      were gonna be rich!

    • @EdwardM919
      @EdwardM919 23 дня назад

      @@nuguns3766 if only but at what cost? Don't tell the capitalist.

    • @timothynechville8326
      @timothynechville8326 23 дня назад

      I agree, that gold attracts gold. And gold sinks to the lowest level because it is so dense. These two properties make it highly likely to be in the core. Yet high temperature and pressure changes some properties. So???

    • @randydewees7338
      @randydewees7338 23 дня назад +3

      Gold has a low melting point and is quite soluble in water rich silicious magmas. Soooooo, I kind of wonder if it doesn't kind of get squeezed upward in melted solution.

    • @EdwardM919
      @EdwardM919 23 дня назад

      @@randydewees7338 it does, in gold vains but not all.

  • @colonelgraff9198
    @colonelgraff9198 20 дней назад

    Weirdly ASMR

  • @richardthomas5362
    @richardthomas5362 20 дней назад +3

    Thanks for using a correct number (sextillion) rather than something like "million billion".

  • @andrewfleenor7459
    @andrewfleenor7459 22 дня назад +2

    So are all these deep minerals stable on the surface, once formed?

  • @popwillodrum1
    @popwillodrum1 21 день назад

    Bridgmanite soup, Motherrrrrrrrr.

  • @carlettoburacco9235
    @carlettoburacco9235 21 день назад

    WE KNOW EVERYTHING!!!
    Well......not really. We know a lot, but "everything" is something else entirely.

  • @christophereadgbe2976
    @christophereadgbe2976 23 дня назад +5

    The Vibranium found in Wakanda may be something more than myth and legend. A meteorite made of material formed deep within the crust of some long gone planet could be made of such a unique metal. But what I learned here today is that it would probably be rather dense (read: heavy).

    • @dwarvenaled
      @dwarvenaled 22 дня назад

      I have this for sale, back in Alaska.

  • @xMaluko
    @xMaluko 23 дня назад +2

    Sorry I haven’t watched the channel in a while, is this a different narrator voicing the video?

    • @Celeste-in-Oz
      @Celeste-in-Oz 23 дня назад +2

      Nah, same one

    • @xMaluko
      @xMaluko 23 дня назад +1

      @@Celeste-in-Oz Huh, is he sick? Mainly asking as his voice sounds a lot more different then before

    • @Celeste-in-Oz
      @Celeste-in-Oz 23 дня назад +3

      @@xMaluko not sick that I know of… sounded same to me 🤔 could have slight cold I guess?

    • @rizkyadiyanto7922
      @rizkyadiyanto7922 22 дня назад +2

      ​@@xMalukohe got puberty.

    • @medea27
      @medea27 22 дня назад +2

      Nope, same guy! Maybe you're thinking of videos where he speaks quite quickly to cover a lot of detail in a short video? Or maybe he's just changed his recording set-up since you last watched. 🤷‍♀️

  • @anthonydooley3616
    @anthonydooley3616 12 дней назад

    Since people can't access the lower mantle, it's kind of irrelevant. Silica is the most common mineral on Earth's crust, which is where we live. Unless there is a known use of bridgemanite, this information is not very useful.

  • @ChrisWMF
    @ChrisWMF 12 дней назад

    if it is so common why didnt they name it earthite?

  • @grokeffer6226
    @grokeffer6226 22 дня назад

    👍👍👍

  • @RStout59
    @RStout59 23 дня назад

    What?😅

  • @jamescarey6559
    @jamescarey6559 20 дней назад

    Bury the lead !

  • @hebdomatical
    @hebdomatical 20 дней назад

    The road shown at 1:45-1:52 that seems to descend into a crater, where is that?

  • @Pest789
    @Pest789 16 дней назад

    That can't be your natural voice.

    • @xwiick
      @xwiick 16 дней назад

      It is.

  • @MrDavidBFoster
    @MrDavidBFoster 18 дней назад

    This being how the universe organizes matter, can we PLEASE *FINALLY* stop referring to planets like Jupiter, Saturn, Uranus, et-al as "Gas Giants"?! That has to be the most RIDICULOUS thing I've ever heard proposed by science, outside of the "expanding space-time continuum! (DO THE MATH, PEOPLE... CORRECTLY, THIS TIME)!!!

  • @ProgPiglet
    @ProgPiglet 22 дня назад

    me like rocks. rocks gud

  • @bxdanny
    @bxdanny 19 дней назад

    In the 1960s, I was taught that the mantle "almost certainly" consisted of basalt, and that we'd know for sure within a decade or so when Project Mohole drilled through the crust and retrieved a sample of mantle. Needless to say, that didn't happen. The project was abandoned, and so was a similar Russian project that did get a bit further. Can we really be sure this meteorite material matches Earth's mantle? I'd say we can't, it's just speculation. It might or might not.