Thanks for taking the time to comment. Glad you found it useful.

Geology adds a whole other layer of interest to interesting locations :)

Thanks. Much appreciated.

In fact we dont know if the current rate of change is unprecedented because as you go back in geological time, the precision of age dating for measurements of global temperature rapidly falls below the 1 or two centuries that we are considering now. It's like trying to judge the speed of a ship on a foggy day. The further away the ship is the fuzzier it looks. Beyond a certain point, you can only guess the location based on the sound of the engines so you can't judge if it is changing speed for short periods.

@ I agree in general with your comments with one profound difference. I developed and worked with groundwater models in my profession. The key was to calibrate to known conditions and then forecast future conditions under various management options. We have climate models that are used in a similar fashion. These models clearly forecast ‘radical’ rates of heating of the atmosphere with resulting effects on ice and sea levels. It is easy to cast doubt on models as there is always uncertainty and some error. Some make a living off it as there is always someone who will pay you to give them the opinion they want to hear. In the case of groundwater it is the growers using groundwater for irrigation that hire flexible experts to cast such doubt. The same is happening with climate change deniers, as happened with those that wanted to deny the link between smoking and cancer. A key problem, both in groundwater and the climate, is by the time the results of the models are clear and largely incontrovertible, the impacts are irreversible. But, on the flip side, in the short term there was some economic gain! At least for the ‘deniers’ and their experts. The costs are externalized. In the case of groundwater the general taxpayer steps in to pay for remedies. With climate impacts we will all have to pay. I now see all of this as pretty much unavoidable as it is part of human nature writ large (Google William Rees article on What is Blocking Sustainability…’ for a free pdf and good explanation as to why we can’t deal with these issues). I just refuse to let bad information fly by unchallenged.

Yep there are nickel laterites here too.

Discovery histories are always an interesting story IMHO.

Having that geology background will no doubt make you a better physicist!

Great. We have both succeeded!

More to come on this next month.

Cheers. Glad you find them useful!

More than usefull, your videos are clear, short and full of data. Really nice work, you have a lot of experience. I saw the one with the UST textures and this one, I found them great. Thank you very much!! I'll be waiting the new ones with quartz textures 😊

Actually I have a plan for one that covers the whole magmatic hydrothermal transition system.

Hope to see approach u did with the UST, ie field-based answers to ‘what’ and the ‘why’, then its application to exploration (vectoring the ore!). I think twas the animation AND your content+delivery to it that made the concepts you want to share make the whole thing digestible and easy to remember/imagine. (The others that are more academically bent are also good but they serve a different crowd). Cheers Nick! 😊

Thanks very much. The only issue is the animations take a ton of time (or money) to do so it's hard to balance that with actual paid work time. The revenue from youtube is so tiny that it would never be a commercial exercise. I just have to do them when opportunity arises.

Quartz is a useful indicator in a huge range of geological processes because it is present in almost every rock and it dissolves in almost every fluid.

@@GeologyUpSkill Thank you. (A chemist here.)

Thanks. Much appreciated.

Colloform usually refers to concentric bandind of amorphous or chalcedonic quartz. These quartz bands are always crystalline. I' working on a series of videos now about the details of different quartz textures.

Thanks. Glad you liked it.

Thanks very much. The main reason I started my youtube channel was to leave a permanent record of the knowledge that I have accumulated for future geologists. Now other geologists are helping me with sharing their knowledge.

Haha. I buy a cheap one from the local pharmacy. Usually less than $10.

OK, it's in the video description now: Shannon j.R., Walker B.M., Carten R.B. & Geraghty E.P. Unidirectional solidification textures and their significance in determining relative ages of intrusions at the Henderson Mine, Colorado. Geology. v.10. pp. 293-297, June 1982.

There was a lot of info to squeeze into that video!

Thanks. If I helped a few people to understand the rocks a little better, my work is done!

@@GeologyUpSkill Absolutely! Thank you again.

Thanks. I'm still using that model and my comments are pretty much the same.

Pegmatites are close cousins of UST rocks, particularly stockscheiders.

Don't worry, I regularly find extras that other geologists have left behind!

You're welcome!

I originally planned a short video, but the deeper I dug, the more interesting it got.

The knowledge really was a collaborative effort in this case. Glad you found it useful.

Thanks. Hope it helps you to find a few USTs.

I struggle with the same issues when reading academic papers so I try to do it differently in my videos.

This gentleman is made of fossilized body parts!

lol, mudfossils? Looking at something and deciding it MUST be that thing is pretty smoothbrained. The truth is way more interesting to me than that nonsense.

They do require a lot of time to put together, but it was such an interesting outcrop, I had to do it justice.

The great thing about field geology is that you can never see all of the interesting outcrops in a single lifetime.

Stockscheider pegmatites are essentially large USTs. Best way to send me photos and engage in discussion is to link up on linkedin.

Have you seen any USTs in your rare earth deposits?

Thanks. Those hats are getting hard to find now.

Thanks. Much appreciated.

Thanks! Glad you enjoyed it.

Thanks. I learned quite a lot myself while making this video.

Thanks. Not sure how this will go. KZbin is not known for long attention span viewers!

Same!

Put some cats in the videos " for scale " ?

Thankyou!

Thanks. Much appreciated.

I wish it was that simple!

ahhh the miarolitic cavities, yep, thats what i would expect.

The difference between these and pegmatites is really only size, infact larger ones are often named stocksheider pegmatites.

Very reminiscent of greisen textures as well .

USTs are often found in or near greisens.

Thanks. This one was a colaborative effort. I hope I can do more like that.

Thanks very much.

Two things are important here. #1 My video says nothing about rate of change or that the change isn't alarming, only that Geologists have a different perspective. That illustrates how easy it is to skew your view of evidence when you hold a particular view. That is something you have to be eternally vigilant against if you are to be a good scientist. #2 We really dont know if there have been any rapid changes like the current one in geological history because as we go back in geological time, the resolution of time data quickly gets blurred beyond the one or two centuries we are looking at now.

That's great. You don't often see examples as clear as this one, but it helps to have it in mind when you are looking at something less obvious.

Cool plants I thought!

Getting out into the field usually fixes that problem :)

That is certainly pushing the limits!

Sorry, I checked again. They drilled a 1000m hole with a RC rig, the 1400m hole was drilled by a DTH rig. I bet when you are going that deep you need lots of air.