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Geology Films
Приєднався 4 вер 2013
Geology Films is about the history of the Earth and the scientists whose passion it is to unravel the past.
The first series of Geology Films is on the theme of gold - how it was liberated from deep in the Earth's crust, then deposited in quartz veins at higher levels. The first gold films focus on a style of deposit called Orogenic Gold. This is the most common type of deposit found in the Australian state of Victoria. The films are produced by geologist/filmmaker Clive Willman in collaboration with filmmaker Davide Michielin.
The first series of Geology Films is on the theme of gold - how it was liberated from deep in the Earth's crust, then deposited in quartz veins at higher levels. The first gold films focus on a style of deposit called Orogenic Gold. This is the most common type of deposit found in the Australian state of Victoria. The films are produced by geologist/filmmaker Clive Willman in collaboration with filmmaker Davide Michielin.
Neville Pilven - Landscape Artist
Artist Neville Pilven is fascinated by the geological formations and wide landscapes of the Wimmera district in western Victoria and the desert country in central Australia.
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Відео
Islands of Gold in an Ocean of Land - The Macquarie Arc
Переглядів 181 тис.7 років тому
The Macquarie Arc is an ancient Australian volcanic island arc that formed in the southern Pacific Ocean 450 million years ago. The volcanic rocks that formed the islands are now part of the eastern Australia mainland - and are rich in porphyry style gold and copper deposits. Earth scientists explain how they unravelled the complex story of the arc using clues from the rock's geochemistry, and ...
Gold Bearing Fluids with Prof Stephen Cox: Part 2
Переглядів 36 тис.9 років тому
In PART2 of Prof. Stephen Cox's interview, he explains how gold-bearing fluids behave as they rise from deep in the crust. See PART 1 at ua-cam.com/video/co8GGqzCzho/v-deo.html and more about gold at goo.gl/0mw8Z4
Gold Bearing Fluids with Prof Stephen Cox: Part 1
Переглядів 26 тис.10 років тому
Prof. Stephen Cox talks about the origins and chemistry of gold-bearing fluids, and how the fluids are stored in deeply buried rocks. See PART 2 at ua-cam.com/video/a2iEjXIUJEI/v-deo.html and more about gold at goo.gl/0mw8Z4
The Stawell Goldfield
Переглядів 94 тис.11 років тому
The Magdala gold mine is a major underground gold mine at Stawell in western Victoria, southeast Australia. Dr Anthony Morey describes underground exposures of quartz lodes and diamond drill core. Professor Chris Wilson discusses his underground structural analysis and explains the origin of laminated veins. See more films about gold deposits at GEOLOGY FILMS Channel goo.gl/0mw8Z4
Orogenic Gold Deposits
Переглядів 72 тис.11 років тому
Dr Richard Goldfarb is a world expert on Orogenic Gold Deposits. He explains how orogenic gold formed during plate tectonic collisions and especially during continental growth. See more films about gold deposits at GEOLOGY FILMS Channel goo.gl/0mw8Z4
The Morning Star Mine - Woods Point
Переглядів 66 тис.11 років тому
The Morning Star Mine is a gold mine in Victoria, southeast Australia. Geologist Dr Peter Jackson takes us underground and describes how the gold occurs. See more films about gold at GEOLOGY FILMS Channel goo.gl/0mw8Z4
The Metamorphic Gold Model - The New Zealand Story
Переглядів 39 тис.11 років тому
Dr Iain Pitcairn talks about his research into the origin of gold deposits in New Zealand's South Island. Iain analysed hundreds of samples from the Otago Schists to demonstrate that gold deposits were derived from fluids that formed during metamorphism of the parent rocks. This is the essence of the metamorphic gold model that is used to explain the origin of orogenic gold deposits. See more f...
Gold, Faults and Fluids
Переглядів 117 тис.11 років тому
International expert Professor Rick Sibson talks about how fluids, faults and earthquakes interact in the crust to form fault-hosted gold deposits. Ken Harris has mined a typical fault-hosted deposit at the Red Robin mine in the Alps of southeast Australia. See more films about gold at goo.gl/0mw8Z4
Geologist here. Very good documentary, but I hope you didn't aim it at 'the general public' because it's way too technical for that level. 3d year university students might get the details, nice class project. Also nice to see Brendan Murphy briefly (conference footing at the beginning). The only thing I didn't like is the repeated use of the word 'created' and 'creation'. Please please please, don't play into the hands of the creationists. We have a rich vocabulary so please use other words
2:16 Damn that nugget if real is gynormous.
Very interesting, explains the land i an sitting on right now, thank you.
Glad you enjoyed it
Very well presented and researched a pleasure to watch.
Thank you for watching
Seeing helps me learn. Over the last 50 years, through the geological maps made by us, and with many different detectors, we see the earth beneath us. Humans are building a map or the Earth. Perhaps those thing will serve us to know more. Telemetry is prime.
With that make up ,there has to be hard rock lithium as well
So what type of rock acts as the source of the gold found in orogenic gold deposits?
Thanks for your question. Many researchers, like Iain Pitcairn, think that oceanic sedimentary rocks are the best source of gold - particularly sediments with a high carbon content and containing diagenetic pyrite - that is pyrite that has formed on the seafloor. But there is also evidence that oceanic basaltic rocks could provide a good Au source. For example, very thick packages of basaltic rocks are interbedded with sedimentary rocks under the very rich Victorian goldfields in SE Australia.
Dr. Goldfarb, the gold specialist - now that's a job he was born for.
That is Rich Goldfarb!
Very nice informative
Interesting
fascinating stuff
Any chance of a film explaining how Uluṟu was flipped onto its side ? Cheers for a great channel
This theory is incorrect. Otherwise there should be numerous other metals and elements. The water cannot sort these preferentially. The deposits were formed by electric currents moving through the water. Currents can sort one metal or element and it can sort several at once. It also stimulates crystal formation. I have the minerals and stones to prove it. This is my theory. The earth is a giant electromagnet, yet scientists and geologists ignore it.
I knew that.
Thanx man❤
Rarely have I cried over a subduction plate compressing and deforming thanks to the locking of a plate boundary...
All right, let's have a small discussion about those gigantic nuggets that the person filming slowly shows us during this discussion of "orogenic gold deposits" ! How much to those boulders, not nuggets weigh ?
They are models of real nuggets
Like a self-sealing fuel tank
That guy is freaky
Thank you so much for detailed information about mapping ,advance technology like survey of this type to identify ,faults ,earth quakes and potential resources . this is senior geologist directorate of ground water ,Karnataka state, India
Thank you for your comment and I'm glad the video is useful. I have seen many excellent Indian videos on subjects like structural geology.
Thank you for perfect done videos,excellent done!!!!❤ Fredrik From Sweden!
Thank you very much for watching.
youtube.com/@mbmmllc thought this might be useful in getting a story to your geology in your mine.
thanks for shairng
You're very welcome and thanks for watching
Excellent geo-history clearly and intrically explained, so very interesting. Thanks to all the team for their good work.
Thank you watching and I'm glad you enjoyed it
Please be my place my guest
Please b my guest india
What the source of that sericite, carbonate and gold? Id be drilling near that...
I have learned so much from this channel! Thanks
Thanks for your comment
"ONYA ANDY" Another great informative upload.All your content is ABSOLUTELY 100% PERFECT FOR US LEARNING PROSPECTOR'S.CHEERS.SHANE
Glad you enjoyed it
None of these geologic theories can be proven in laboratory...show me liquid quartz please...I'd like to see gold trapped in hydrothermal fluid traveling upwards please...
ever heard of primary water there is more water in the stone at depth than in all the oceans on earth on the service that a well known fact
Brilliant video. I watched part one on my UNI website as we are learning about gold-bearing fluids and how gold is deposited. Thanks for this upload!
How did the old miners know all the stuff about the faults? They didn’t have the technology we have today and not trying to insult them, but I suspect many did not even have a high school equivalent education. It really impresses me what they knew back then, but how they knew it baffles me!
It's a great question. The old miners were pretty clever and they learnt from experience. They observed how veins had formed in lots of different mines and soon realised there were patterns they kept seeing from mine to mine. Also, geologists and mining engineers arrived on the scene about 18 months after gold was discovered in mid 1851. Eventually those geologists/engineers started writing articles in local newspapers and in government reports. By the mid 1860s they understood that gold-bearing veins and faults were related. Over the next 30 years or so, mine managers became more educated through local educational institutions called 'Schools of mines' and they would have instructed the less educated miners. As you say, most ordinary miners would have left school at age 15 but the state of Victoria (in SE Australia) had compulsory education from 1872 and one of the highest literacy rates in the world. And because there were so many scientific articles in local newspapers, the general population probably knew more about gold than people today.
Fascinating. The best explanation I've ever heard of these processes.
Aloha hugs 🤗 Gold dust is awesome for the mine I ate cake with I thought it was glitter wow O would like to see that.
First off, Woods Point is an awesome place to visit, do it if you ever get the chance To actually get into the mine & get in-depth with the miners Is a notable achievement To actually get them to talk to you about mining the mine!!!!! And their methods for chasing the good shit Journalistic job well done That's some quality journalism right there! Big kudos for all involved
I just discovered your channel, I clicked on subscribe after watching the first video I saw, congratulations on a really informative channel
Great video
Thanks for watching
Go Clive. Class geologist.
So next stage of concept development is the Electrostatic discharge involvement in sudden phase change at all flash-fractal In-form-ation substantiation levels? Geologists are exceptional Observers. Complicated and messy geophysics.
The suggestion of mineralisation from 50 years ago is advancing to theory, and will continue to verify geyser gold deposits?
Raises the question of fracking!
Not really. Fracking is mostly used in oil and gas extraction. I've never heard of it being used for gold mining.
i just found this late at night. very enjoyable. i have some questions. at 2:56, you say "no evidence of volcanic activity". of course there is lots of evidence of volcanic lava flows in victoria to the west of melbourne, scoria fields around colac and the red scoria mt fraser north of melbourne just east of the hume freeway. and at 12:57 your map shows sandstone all across victoria. there must be differences in the sandstone across this area because there were no sandstone deposits around melbourne suitable for the elaborate construction of banks and other buildings in the 19th century melbourne cbd. the sandstone that was sometimes used in these buildings came from sydney. at least some of the volcanics in western victoria are likely to be younger than the macquarie arcs. the western victorian aborigines have legends of active volcanoes. i have seen somewhere that there were hot spots deep below the surface that move relative to continental drift and that a volcano may appear in bass strait off the coast of warrnambool. your show raises the thought in my mind that the macquarte arcs in nsw may have a relationship with the concentration of gold into monster-sized nuggets that victoria was famous for and that there may be unknown deposits of copper.
Good questions. I should have said "no evidence of volcanic activity at the time of the Macquarie Arc". The volcanic rocks across the central and western plains of Victoria are much younger, mostly less than 7 million years old, compared to the Macquarie Arc volcanic rocks, which are more than 400 million years old. The young volcanism in Victoria is not obviously related to plate tectonics - it's a type of intraplate volcanism. The Macquarie Arc volcanism has all the chemical and physical characteristics of subduction related volcanism caused by plate collisions - so very different environment and timing. Likewise, when I mention the sandstones I'm talking about old 400-480 million year old rocks, which form most of the bedrock of Victoria. This bedrock is, in places, covered by a thin veneer (20 to 100+m) of the young 7Ma volcanic rocks. The story of these young volcanic rocks is itself, very interesting - they are so young that western Victoria is still regarded as an active volcanic province, the last eruptions having occurred < 15 thousand years ago. Thanks for watching.
@@GeologyFilms , thanks for the explanation.
Now I have to rethink the Cascades in the United States as a island chain just as you described here although it is already been overtaken by the North American plate. Maybe it's the fundamental fingerprint of the siletzia subduction event.
And I thought it was going to be a story about slab plutons and shifting fault strike zones. Wow this is way better and cool thank you
6:30 in, still no idea why the Macquarie Arc is there. I'm sure this video will have the answer. Yet "Geology Films" are good at no letting-on at this point in the story, I'm sure if I keep watching I will find out. lol
Absolutely fascinating story. Thanks for putting it all together!
Thank you for watching and we're glad you found it interesting.
Epithermal deposits are formed by granitic magma... really? And 400C is not enough to deslfurised the auriferous pyrite...
Baloney! The gold-laden water came from dehydration of sediments during the consolidation of the sediment mass.