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.
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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.
Thanks that was like a delicious entree, I’ve subscribed, I’m a mug but travelled all over Oz outback looking and collecting but never understanding. Over in the goldfields of WA we came across an area that had low aligned hills that were either predominantly white quartz or black iron stone, but the weird part was they were adjacent to each other and occurred over a fair area. I’m sure a geologist would know why, thanks
Thank you for sharing
Wow! That's my great uncles mine. Bill Spargo (The Hotham Hermit) lived up there for 27 years. He had a hunch that the Ballarat goldfields ran through the high country. Whilst prospecting he spotted a Red Robin sitting on some quartz which became the Red Robin mine.
My Father who did security for the S.E.C took me their a few times !
Absolutely LOVE this channel! Shame there aren't many uploads.
Great films!
Thanks for sharing this.Very interesting!
He avoided the question ,where did the deep water come from.
Thank You ! Very interesting and well presented , hope to see many more vids
Love your video. But when you say: "There's no doubt about it.", I cringe a bit. Discovery and science requires everything be repeatedly questioned. When you displayed that very thick vein of quartz, there were several thin layers of black host rock contained in it running parallel to the vein. To me that indicates possibly that this vein broke away (additional earth quakes) from the wall rock repeatedly over time, sometimes taking a small amount of host rock with it. Quartz is less elastic than most host rock plus there is little bonding to the host rock, so the quartz repeatedly fractured permitting deeper hydrothermal fluids under greater pressure, to be pushed up with their dissolved minerals. New fractures in the quartz and on its boundaries permitted additional quartz/gold/ iron sulfide, etc., to precipitate if it were moving slowly enough as the pH, temperature and pressure changed. So one vein of quartz may have had a hundred or more episodes of growing. Earthquakes thus became the gold miner's friend, in time. Additionally, if the upper environment did not encourage mineral precipitation, it's possible some of the existing quartz vein and minerals already deposited may have been re-dissolved and moved even higher.
I enjoyed this video very much with my morning coffee , now I will have to subscribe and watch more of the series I am a prospector in the American west I had a step dad (when I was a teenager) who grew up in Kellogg Idaho ( Glen Smart ) and worked underground all his life in mines around the world . He had very little formal education . He taught me quite enough to make a prospector out of me for life . I will soon be 64 . that seed made an amateur geologist out of me Calif. to Nev. to the Carolina's to Idaho/Mont. to Wash. to Alaska and now back in Washington ( Eastern ) Working placer deposits for super fine gold. ... But always an eye on the geology everywhere I go . This vid. fanned the embers
Thanks for your comment. When the gold bug gets you it's hard to shake it off, and as you say, it opens your eyes to geology in general. The amazing thing about gold deposits around the world is that they often look the same, basically because the processes that formed them are very similar. All the best for your prospecting.
Yes they are ... same with high bench placers they are everywhere and the ultra fine gold collects about the same everywhere
Does this type of geology appear in other places? As far as I know where I live in El paso Texas was once under an inland sea
Yes this type of geology occurs in lots of places, especially around the Pacific rim.Thanks for watching.