What is Ironstone? (and how did shrimp build a bridge?)
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- čas přidán 4. 05. 2024
- #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/0gNkB...
What's your favourite sedimentary rock? Mine is deffo ironstone.
Limestone!
Solid choice. But which kind of limestone?! One full of plant fossils? ;)
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.
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.
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.
I love your style. Just the right depth too.
Thanks, glad you like the videos!
The best item a geologist could have in their kit would be a TARDIS.
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.
Australian here, ive been there and i can confirm its definitely 💩
Lol! I didn't realise how big it was until I got there.
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?
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. :)
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
The sandstone around the bridge has some lovely sedimentary structures too!
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.
"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. :)
"Behold my mighty magics!" plop.
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 😂