Thank you so much, this was fascinating. And Kate, your drawing was excellent, including the oxen! :) I'm interested in finding out if there are any first-hand accounts by the early miners, those who lived in tents right at the beginning. My great grandmother was among them, but she was very tight-lipped about her personal history so I was never able to learn much from her. She'd have been in Joburg from around 1885 to 1899 or thereabouts. Can anyone tell me if they know of any books or diaries / memoirs dating back to those times in Joburg?
Thanks Bjorn. We observe the same decoupling of Co and Cu grades at KCC and Mumi. We suspected it must have something to do with temp but didn’t consider S fugacity and temp. Great talk. Will help greatly with refining the precepts for our resource estimation.
Hi Gerrie, great talk and great hearing it from a "miner". @ 28:30 you refer to two generations of extension fractures and mentioned you have recorded striation🙂... I assume your record indicates that E1 is right lateral slip and E2 is left lateral slip where E1 has rotated about 40degrees (+-5) relative to E2 if we use the same plane as reference 😅...
Hi, sorry, I do not know how to address you. Note that the primary striations on the E1, E2 and E3 fractures are fractographic, not kinematic. Subsequent to their dynamic formation, because of the advance of the mining face, the direction of load on the fractures do change and some slip is possible, leading to slickensides superimposed on fractographic striae.
There has to be some explanation as to why there are billions of fossil pieces all violently smashed & broken, and crammed together throughout various fossil graveyards around the world. It's like there was a Flood of Biblical proportions!
Thanks for a very enlightening presentation. As a resident of Sedgefield, since 2016, always wondered what fed Groenvlei. Now I know! I remember seeing the wet-stacks at PG Bison - Fairview and saw the installation of the well gear of the forth well from the west as per the image at 22:02. I think the wet-stacks had just started by then and what an impressive sight it was. Many Sedgefielders get really upset when the knysna municipality imposes level 3 water use restrictions on us, as we all know, there is no real shortage of water. I hear there is a possibility of a dam being built on the far northern upper reaches of the knysna river, as a supply to knysna. Surely the Muni know of the water that's available from the PG Bison - Fairview wells? The challenge is getting the water to where its needed. I would love to see the floating bog near Fairview. I hear there is interesting flora in the wetland area. Thanks again!
This is a very contradictory talk, misinterpreting many facts and/or twisting information in the presenters' favor. Here are a couple of examples: polar bears ARE going extinct, I was in the Arctic Polar Circle in 2021, and each bear literally has a GPS chip under the skin, and they are being monitored 24 hours. They can be counted by fingers on your hands. When you said that there can not be a mass extinction caused by humans because not every mass extinction was caused by CO2 levels increase - you are hiding facts. Current mass extinction is not only caused by warming but, at large, by uncontrolled mass poaching of animals (South African white rhino, pangolin, passenger pigeon in the USA, Mauritius tortoise - you name it!). Destroying habitats for crops, roads, and settlements is a huge factor too. You can not come across any landscape that has not been modified by humans. And what about trashing the oceans and microplastics caused by the hydrocarbons as well? Further, you said - look, not all global warming in history was correlated with an increase in CO2 - therefore, the current one is not. You forget that CO2 is not the only greenhouse gas that can cause warming. Hence, in the past, it could easily be that other gases caused an increase in global temperature. Saying that there are no catastrophic events due to global warming is simply unsupported by anything. We have at least one war caused by global warming/famine with catastrophic consequences and millions of refugees worldwide - the one in Syria. I laughed when you said that before the industrial revolution, people would break their backs just to survive :) Implying that nowadays people do not? In what delusion you, oil and gas people, are living? Perhaps, you don't break your backs. I can speak for myself - with 2 MSc degrees and a Ph.D., I can't remember a single evening or weekend when I did not have to work - apart from my 8-10 working day in the office. All to provide a few Rands to pay my load and school fees for my child. Congrats if you don't have to work hard - I wish I had such a life. My only vacation is when I am so sick I have a fever of 39, that is when I have a luxury of not working.
Hey, just stumbled onto this channel, not really sure why. Anyway I just wanted to convey my aspirations of seeing Total Energies and Oil as a whole industry collapse. You cause global warming, and therefore are responsible for the deaths it has brought and will continue to bring. You lie and misrepresent data, and this costs lives. If I where you I would jump ship and start looking for a new career, I cannot fathom being so arrogant that I see profit as more valuable than human lives. To anyone else stumbling across this video, this is what is making things worse. These people deserve condemnation. How can you people speak of oil exploration as islands are covered by the sea, forcing people to leave their homes, as permafrost melts and villages sink? How can you speak of oil exploration as any sane person begs you to stop? You are worst than evil, you are malignant.
Excellent talk, Murray! The Leinster coalfield also shows evidence of high temperatures, in both vitrinite reflectance values and the anthracite grade of the coal. This is in stark contrast to the more bituminous coal grades in UK coalfields, and the lack of Zn-Pb deposits there, perhaps a function of the heat energy available?
Interesting, so $15 billion (R260 billion) invested in the WC would go a long way to end load-shedding for everyone With the cap on power generation lifted from 100MW we could see a real opening up in this arena (assuming Eskom get the transmission bottle-necks sorted out)
I missed the live version of this talk and am so pleased to see that a recording is available. There’s so much important information raised that I’ll certainly need to review it again, and probably more than once. Thank you.
Thanks for the talk, Jean. I was surprised at the relatively young age given for the Bredasdorp Formation. Is it a maximum of only 3 myo? I also didn't realise that Die Koppies are a Wankoe Formation capping. Fascinating!
Very interesting talk & much appreciated by a very amateur geologist living in Sedgefield. Walking along our coast line between Kleinkraans, Gerricke's point, Swartvlei/Sedgefield, Platbank and then around Brenton-on-Sea, means that much more now. I shall be referring to this video in future to familiarise myself with what I see on the coast. Many thanks!
