Geology Johnson
Geology Johnson
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What is Ironstone? (and how did shrimp build a bridge?)
#Geology #Ironstone
Why is the Sydney Harbour Bridge made of poo? What does this tell us about ironstone, and what can ironstones teach us about Earth history?
Geologist Dr Brooke Johnson gives us a quick introduction to ironstones and how they form, and shows how the behaviour of living things million
or even billions of years ago, can influence the world we live in today.
Learn about the history of Cleveland ironstone mining - landofiron.org.uk/
Modern shrimp burrows and other animal traces - www.georgialifetraces.com/
T-shirts - www.geologyjohnson.com/
Music - open.spotify.com/artist/0gNkBLkRtlwCZhdvTDmymz?si=TJjZxy6iQeuy8sL5DykxqA
zhlédnutí: 380

Video

The Boring Billion? A geologist explains!
zhlédnutí 795Před 4 měsíci
#geology #Precambrian What was the boring billion? Who decided it was so boring? Was it even real? Geologist Dr Brooke Johnson gives a quick guide to the (allegedly) dullest period in Earth's history. Garcia et al Carbon isotopes through time www.nature.com/articles/s41396-021-00971-5/figures/1 Javaux & Knoll 1.4 Billion year old eukaryotes pubs.geoscienceworld.org/jpaleontol/article/91/2/199/4...
What are Trilobites? A Geologist Explains!
zhlédnutí 2,1KPřed 5 měsíci
#Trilobites #geology Trilobites were one of the most successful animal groups in Earths history. But what are trilobites, when did they live, and where did they go? Geologist Dr Brooke Johnson explains in this beginners guide. Special thanks to trilobite expert and all round good egg, Dr Steven Pates. References General trilobite information www.trilobites.info www.alexstrekeisen.it/english/sed...
Why is Iceland volcanic, a geologist explains
zhlédnutí 255Před 5 měsíci
#Iceland #volcano Iceland is a highly volcanic island, but why is that? Geologist Dr Brooke Johnson explains why Iceland experiences so much volcanism, and what is behind the recent volcanic eruptions. Iceland meteorological survey - en.vedur.is/about-imo/news/a-seismic-swarm-started-north-of-grindavik-last-night Iceland national news - www.ruv.is/english/2024-01-14-grindavik-eruptions-401887 R...
What is amphibole, Hornblende, and asbestos? A geologist explains.
zhlédnutí 1,8KPřed 5 měsíci
#amphibole #minerals Geologist Dr Brooke Johnson gives a quick beginers introduction to the amphibole group of minerals including hornblende, and asbestos. Proterozoic Park shirts - www.geologyjohnson.com/ More information on amphiboles with lovely microscope pictures - www.alexstrekeisen.it/english/pluto/amphiboles.php Even more information on amphiboles with photos - geologyistheway.com/miner...
What is sandstone? A Geologist Explains
zhlédnutí 1,2KPřed 5 měsíci
#Geology #rockhounding What is sandstone? Geologist Dr. Brooke Johnson explains in this quick beginners guide to identifying and classifying sandstones. Proterozoic Park shirts - www.geologyjohnson.com/ Sandstone composition classification - www.geological-digressions.com/classification-of-sandstones/ Grain size chart - www.alexstrekeisen.it/english/sedi/grainsize.php Sedimentary rock informati...
What is Pyroxene? A Geologist Explains!
zhlédnutí 5KPřed rokem
What is Pyroxene? A Geologist Explains!
Dinosaur footprints from Jurassic Yorkshire
zhlédnutí 278Před rokem
Dinosaur footprints from Jurassic Yorkshire
Early Life Evolution and Traces - Astrobiology Lab Tour (my new job)
zhlédnutí 402Před rokem
Early Life Evolution and Traces - Astrobiology Lab Tour (my new job)
Geologist Rockhounding at Sandsend
zhlédnutí 464Před 2 lety
Geologist Rockhounding at Sandsend
Geology Microbial Fossils tiktok roundup
zhlédnutí 193Před 2 lety
Geology Microbial Fossils tiktok roundup
What is basalt ? - A geologist explains
zhlédnutí 12KPřed 2 lety
What is basalt ? - A geologist explains
How to do geology field notes and sketches
zhlédnutí 2,7KPřed 2 lety
How to do geology field notes and sketches
How to take strike and dip a geologist explains
zhlédnutí 502Před 2 lety
How to take strike and dip a geologist explains
How to Do Geology Basic Field Gear
zhlédnutí 562Před 2 lety
How to Do Geology Basic Field Gear
Jurassic Ammonite Fossil Hildoceras from Whitby
zhlédnutí 356Před 2 lety
Jurassic Ammonite Fossil Hildoceras from Whitby
Geology of Arran 2021 Part 4 Glen Sannox
zhlédnutí 449Před 2 lety
Geology of Arran 2021 Part 4 Glen Sannox
The Geology of Arran 2021 Part 3: The Laggan Loop Part 2
zhlédnutí 403Před 2 lety
The Geology of Arran 2021 Part 3: The Laggan Loop Part 2
The Geology of Arran 2021 Part 3: The Laggan Loop Part 1
zhlédnutí 535Před 2 lety
The Geology of Arran 2021 Part 3: The Laggan Loop Part 1
The Geology of Arran Part 2: Kildonan
zhlédnutí 694Před 2 lety
The Geology of Arran Part 2: Kildonan
The Geology of Arran Part 1: The Corrie Shore
zhlédnutí 1,4KPřed 2 lety
The Geology of Arran Part 1: The Corrie Shore
Ediacaran and Cambrian Volcanoes fossils and mud
zhlédnutí 404Před 3 lety
Ediacaran and Cambrian Volcanoes fossils and mud
What is granite? A geologist explains!
zhlédnutí 34KPřed 3 lety
What is granite? A geologist explains!
What are zeolites?! A geologist explains!
zhlédnutí 14KPřed 3 lety
What are zeolites?! A geologist explains!
Jurassic Fossil Coral Reef in Oxford England
zhlédnutí 459Před 4 lety
Jurassic Fossil Coral Reef in Oxford England
What is Feldspar? A geologist explains!
zhlédnutí 11KPřed 4 lety
What is Feldspar? A geologist explains!
Geology Johnson May 2020 Update
zhlédnutí 78Před 4 lety
Geology Johnson May 2020 Update
What are Carbonates? A Geologist Explains!
zhlédnutí 1,1KPřed 4 lety
What are Carbonates? A Geologist Explains!
What are these green crystals!? Geology Johnson Explains
zhlédnutí 167Před 4 lety
What are these green crystals!? Geology Johnson Explains
What is quartz? A Geology Johnson explains!
zhlédnutí 6KPřed 4 lety
What is quartz? A Geology Johnson explains!

Komentáře

  • @jameswingert9596
    @jameswingert9596 Před 2 dny

    'basalt is the second most boring rock on earth' 😂🤣😂

  • @kellyearthrise2453
    @kellyearthrise2453 Před 6 dny

    Cool, bringing the old old...old days to life!

  • @GabrielMercier-ue9gs

    Fantastico video if it weren't for the obnoxious background music. THANKS

  • @michaelbrickett1046

    - Most astute. Thank-you, Sir.

  • @xxTHExxABYSSxx
    @xxTHExxABYSSxx Před 8 dny

    Why do sandstones stick to my skin when my skin is moist and the stone is dry, but it wont stick if the stone is wet and my hand is dry?

  • @ytmusicacc101
    @ytmusicacc101 Před 9 dny

    Love the info, but the music does not fit the geological subject. Feels like I'm raving

  • @MelvinBandao-fu5jr
    @MelvinBandao-fu5jr Před 10 dny

    Sir, is basalt rock has a melting fusion?

  • @HoboMinerals
    @HoboMinerals Před 12 dny

    Why is quartz so absent in meteorites and abundant on Earth?

  • @cosmo1eleven855
    @cosmo1eleven855 Před 16 dny

    Poor audio sound and Aussie accent hard to decipher

  • @Mr.agate2
    @Mr.agate2 Před 22 dny

    ❤❤❤❤

  • @elijahsahay9556
    @elijahsahay9556 Před 24 dny

    do zeolite reacts with hcl?

  • @martynm.449
    @martynm.449 Před 26 dny

    I'm from Cornwall. We have granite everywhere. I've found a nice looking lump that has brassy/golden shiny bits in it. I'm trying to work out what it is. Well... I thought it was granite, but who knows?

  • @WilliamBusuttil
    @WilliamBusuttil Před 28 dny

    Maps please,

  • @RichardLank-lq2po
    @RichardLank-lq2po Před měsícem

    we have a small mountain which has lot of quartz crystals , mostly the size of 2 inches for indicidual crystal and a foot with when they are all together, any suggestions as to if there was any volcanic activity nearby ? just want to know so that i can avoid falling in volcanic tubes if any , enjoying current crystal hunt . also want to know how these are formed ?

  • @drillhex4471
    @drillhex4471 Před měsícem

    I really don't get why these rocks aren't more popular. I'm from the area and I've always found them mesmerising there's such a vast array of patterns in them. Kinda glad they aren't popular, though. Otherwise, there would be none left :')

  • @KittieMaeS
    @KittieMaeS Před měsícem

    My rock and mineral obsessed brain is on fire with the information in this video. 😅

  • @KittieMaeS
    @KittieMaeS Před měsícem

    Hey there. Do you happen to have any knowledge of Isle Royale Greenstone? Or all the green metamorphic rocks of all stages around Lake Superior? I have some pieces I would be happy to send your way to study :)

  • @fishing_rod
    @fishing_rod Před měsícem

    Great information I find granite, marble, theirs one area crushed up granite pink in colour started find broken pieces of crystal it has two clevige plans ,cream in colour with green and yellow, white is it feldspar, and white quartzite, orange, pink, theirs a gold coloured as well luv work

  • @fishing_rod
    @fishing_rod Před měsícem

    G'day really enjoying the information been out searching found egg shaped Basalt round boulders tennis ball size, soccer ball, cracked one open deep colbolt colour and slabs of Basalt some pieces I found Esky lid size 50mm to 100mm thick with 10mm holes straight through the basalt this place is a spur off the great didving range

  • @jasonthompson5324
    @jasonthompson5324 Před měsícem

    Definitely check him out he’s a character and really knows his geology I always thought geologists were kinda like boring science teachers but I’ve learned there’s some really interesting geologists and Jeff’s right into it he’s hilarious

  • @fishing_rod
    @fishing_rod Před měsícem

    Great information on the old coat hanger and famous Sydney sandstone pylons on the are granite found some interesting specimens tday agate quartz petrified Wood some artefacts and quartzite and oaka different colours

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      The sandstone around the bridge has some lovely sedimentary structures too!

    • @fishing_rod
      @fishing_rod Před měsícem

      Thanks for the reply back im from Sydney original been in Queensland near the Bunya mountains home to the Bunya pine it's about 1200 mts above sea level it snow's there occasionally beautiful place tday I was out searching I go on horseback bottom of the hill in forest there is water there small creek and soaks and ancient river bed the piece's I found tday Quartz rock tennis ball size set in a sedimentary base of crashed Quartz this sample is as big as a kitchen chopping board the quartz rock in this sample are stained red iron oxide the other pieces I found are smooth white quartz stone's some are artefacts some are black and white banded and roses colour and transparent , these a hole bank wall full of those Quartz stones there one place in the forest I found they must have had heat there I call it the foundry the original people that lived there must have been melting rock I have found tool's that have been welded together again heaps of quartzite there as well this place is unique.

  • @jasonthompson5324
    @jasonthompson5324 Před měsícem

    Good video big fella I watch a lot of Jeff Williams geology videos mostly for gold prospecting but it’s always nice to listen to straight geology

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      I don't know much about gold prospecting, maybe I should check him out.

  • @mistressofstones
    @mistressofstones Před měsícem

    Why are there so many amazing minerals in that town? Was that a wall made of larvikite?? 😮

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      It's cos off the Uni has a lot of money. Yup, the supermarket is made of larvikite!

    • @mistressofstones
      @mistressofstones Před měsícem

      @@geologyjohnson7700 that's AMAZING 👏

  • @mistressofstones
    @mistressofstones Před měsícem

    Awwwww I wish you could come look at my rocks 🪨 I have tonnes of them in my library 💚

  • @mistressofstones
    @mistressofstones Před měsícem

    Australian here, ive been there and i can confirm its definitely 💩

  • @mistressofstones
    @mistressofstones Před měsícem

    Omg the tiny hand 😂 im definitely subscribing 😂😂😂

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      I need to include Tiny Hand in more videos. Thanks for subbing!

  • @edgeeffect
    @edgeeffect Před měsícem

    "Checkmate rock-fondler" :D :D :D :D :D :D :D I like the way that the alchemists had various theories about metals growing within the earth... and how they were kinda, sorta right... but instead of weird astrological rays doing this it was actually hordes of crustaceans squeezing it out one turd at a time. :)

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      "Behold my mighty magics!" plop.

    • @mistressofstones
      @mistressofstones Před měsícem

      As someone who's studied a lot of those old texts i can confirm no one thought it was tiny animals pooping 😂😂😂 Paracelsus and St Hildegard would be very disappointed 😂

  • @bbbf09
    @bbbf09 Před měsícem

    also looks like silver jubilee bridge Merseyside czcams.com/video/8SqMCDy8NXs/video.html

  • @geoffgeoff143
    @geoffgeoff143 Před 2 měsíci

    The best item a geologist could have in their kit would be a TARDIS.

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      Yes, I would love to have a TARDIS just to go back and watch things happen. Also, to get some nice peace and quiet too.

  • @geoffgeoff143
    @geoffgeoff143 Před 2 měsíci

    I love your style. Just the right depth too.

  • @karenashworth5743
    @karenashworth5743 Před 2 měsíci

    I have some lovely ironstone nodules from the Cleveland Dyke at Great Ayrton .Fascinating video. Have you seen the green iron deposits at Bradgate Park in Leicestershire?

    • @geologyjohnson7700
      @geologyjohnson7700 Před 2 měsíci

      Wow, cool! I've not been to GA in years. I have seen the green iron in Bradgate, we took the students there when I was at Oxford. :)

  • @geologyjohnson7700
    @geologyjohnson7700 Před 2 měsíci

    What's your favourite sedimentary rock? Mine is deffo ironstone.

    • @saramiddleton9094
      @saramiddleton9094 Před 2 měsíci

      Limestone!

    • @geologyjohnson7700
      @geologyjohnson7700 Před 2 měsíci

      Solid choice. But which kind of limestone?! One full of plant fossils? ;)

    • @geoffgeoff143
      @geoffgeoff143 Před 2 měsíci

      Mine could be agate because we don't know how it forms and possibly never will because there is no financial incentive. Same as Hawke's eye, although that is possibly a lot more simple and someone might do it as a thesis.

    • @geoffgeoff143
      @geoffgeoff143 Před 2 měsíci

      The beauty of science and especially geology is nothing is ever proven. It is simply what we think at this point in time. Even BIFs are open to argument with regards how and why they formed.

    • @goldfools5445
      @goldfools5445 Před 2 měsíci

      BIF, I have some wonderful raw specimens from the Pilbara in Western Australia. Heavily distorted with bands of what visually looks like golden metal. I have been told it’s metamorphosis of asbestos, I don’t know.

  • @sreed6220
    @sreed6220 Před 2 měsíci

    Heat causes melt or glass. Basalt has a crystalline structure. How can basalt cool with crystal formation from lava or magma?

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      If the molten rock has the right chemistry, and it cools at the right rate, then the cooling melt will crystalise.

    • @sreed6220
      @sreed6220 Před měsícem

      @@geologyjohnson7700 That would occur underwater under high pressure from the water depth, such as in the observed submarine basalt columns from Puna Ridge, Hawaii. Otherwise, what you're describing is that terrestrial basalt was formed underwater at great pressure depths, such as during the great flood (when fountains opened up such as diatremes) or the creation of the earth which was initially covered in water (Genesis 1:2). Otherwise, lava would cool into mostly glass under less pressure, such as obsidian or pumice. Correct? Example, Devil's Tower in Wyoming, is in a crater. The Tower itself is an intrusion from a diatreme. See: nps gov/ deto / learn / nature / tower-formation htm Thus if basalt is the most common rock, then it occurred underwater under pressure. Magma itself has never been observed. What has been observed is quakes before lava eruptions, meaning the quakes cause friction which causes liquid rock or lava which gets squirted to the surface.

  • @LetitiaCox-Wallace
    @LetitiaCox-Wallace Před 2 měsíci

    I’m 74 and watching Journey to the center of the Earth and he tells the kid to eat his Trillobytes so I just wanted to know what they were. but I think you’re pretty interesting so I subscribed and I push the light button and I’ll look you up again geology, Johnson oops I’m sorry I forgot the name. I’m getting ready to look up the word scisht as well hopefully you will answer that one too. Either way it was interesting. Thank you.

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      Glad you like the videos. That's a fun film. I will be making a video on schist soon because it can be a confusing term!

  • @geolyn
    @geolyn Před 2 měsíci

    After 1 minute my brain started dribbling out of my ears. I think my brain is past it and could do with metamorphosing into something better. That would be gneiss..... (sorry).

  • @christiangerlach2747
    @christiangerlach2747 Před 2 měsíci

    I think I just found my favorite geological terms, dykes and sills. 😅

  • @LluviadeOrugas
    @LluviadeOrugas Před 2 měsíci

    Is it wrong to use granite for our homes?, I’m feeling a bit guilty right now.

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      Nope, if it's in your house then you get to enjoy how nice it is.

    • @LluviadeOrugas
      @LluviadeOrugas Před měsícem

      @@geologyjohnson7700 , great, thank you for replying! :)

  • @BlazingShackles
    @BlazingShackles Před 2 měsíci

    I pronounce pyroxene the same way you do. But my American geologist friend makes fun me. He says its "peerowseen".

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      Yeah, they often say things different. My american colleague calls it "Piro zeen" and pyrite as "Pir ite". He swears it's the correct pronunciation. I've never heard the way your friend says it though!.

    • @BlazingShackles
      @BlazingShackles Před měsícem

      @@geologyjohnson7700 he corrects my pronunciation all the time and told me his peers can tell the book read people from the professionals based on certain words. arrogant pricks.

  • @WildesCollections
    @WildesCollections Před 2 měsíci

    Nice

  • @jimcurtis569
    @jimcurtis569 Před 2 měsíci

    Thank you for sharing. It's great that you are showing that geology is accessible to everyone, no matter how our brains are wired.

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      Glad you liked the video. I want everyone to know that science is accessible to anyone who is interested in it. :)

  • @jimcurtis569
    @jimcurtis569 Před 2 měsíci

    Greetings from the Copper Country of Michigan on the Mid-Continent Rift of central North America. We see lots of pink feldspar deposited in the vesicles and fissures in the 1.1 billion year old basalts that are everywhere here. We call it "K-Spar". 😁

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      Oh exciting! I'll get round to visiting that area one day! Some of the rocks I work on are around that age.

  • @charlesbyrd4996
    @charlesbyrd4996 Před 2 měsíci

    I have a clear stone with algae fossil inside of it. Can anyone tell me anything about it.

  • @fishing_rod
    @fishing_rod Před 2 měsíci

    I'm enjoying the information just I have been finding some quartzite funky colours, size,golf ball,foot ball car house,and what you where explaining in the video are there as well I find from dark purple to black this is metamorphic has it been cooked from to much heat and pressure here molten activity all your three rock are .

  • @universal144K
    @universal144K Před 2 měsíci

    Hello from Alaska. Just subscribed 🎉🩵💎

  • @gerryhuit5044
    @gerryhuit5044 Před 2 měsíci

    There has a value sir?we have a same rock here in the philippines.

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      Sometimes it can be gem quality, but I am not knowledgable about the valuation of gems.

  • @erwinandrian9222
    @erwinandrian9222 Před 3 měsíci

    ditempat saya ada feldspar.

  • @mignonpepito8540
    @mignonpepito8540 Před 3 měsíci

    Hey, are you from the university of Liège ? Since Miss Javaux is your boss ?

  • @yorkshirefossilfestival7741

    The Boring Billion: mostly made of duller-mite

  • @CrispySkates
    @CrispySkates Před 3 měsíci

    Hi, great video I would really love your help! Blue granite, is it formed near volcanic activity? I'm not a geologist so I'm not sure if I'm saying it correctly lol Why can't have magnetic properties?

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      Blue granite isn't really granite, it's a common name marketing name for different kinds of blue igneous rocks such as monazite and larvikite. The blue colour comes from minerals like sodalite, and labradorite. These rocks crystalise slowly from magma deep underground like a granite does, but they don't have enough aluminium or silica to be classed as granites. Still very nice to look at though. They are not magnetic because the don't have enough elemental iron or magnetic minerals in them like magnetite. Instead, the iron in these rocks is in the silicate minerals so it's not magnetic.

    • @CrispySkates
      @CrispySkates Před měsícem

      @@geologyjohnson7700 awesome thank you so much for the run down!

    • @geologyjohnson7700
      @geologyjohnson7700 Před měsícem

      @@CrispySkates No probs, always happy to talk about rocks. :)