UST Textures (Brain Rock)

[@smtxtv]

Was a geology major til switching to Physics. I still enjoy this and remember those great days and field trips.

[@GeologyUpSkill]

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

[@dirtnsnow9016]

Love the long form videos!

[@GeologyUpSkill]

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

[@nicolasrodriguezoria4522]

Same!

[@kaboom4679]

Put some cats in the videos " for scale " ?

[@theooidgirl]

Captivating video and fascinating topic, Nick. Thank you for sharing/posting. I miss the excitement and freedom of being in the field, exploring. So, until I can have such experiences again, I'm living vicariously through you and your videos. Again, much appreciated, your sharing your knowledge/experience with us. 🤠⚒️🪨

[@GeologyUpSkill]

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

[@Alex-gr4le]

As always, fantastic video

[@GeologyUpSkill]

Thanks! Glad you enjoyed it.

[@xmuga2pre1]

Nick - this is the best teaching video you’ve made!!! Hope to see similar videos up section to porphyry, porphyry-epithermal transition, epithermal and geothermal domains 😜

[@GeologyUpSkill]

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

[@xmuga2pre1]

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! 😊

[@GeologyUpSkill]

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.

[@SB-qm5wg]

My geology skill just went up another level.↗

[@GeologyUpSkill]

Great. We have both succeeded!

[@mohammadfahim7394]

really appreciate your work sir, keep doing it.

[@GeologyUpSkill]

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

[@baTonkaTruck]

Phenomenal video, thank you for this. The ideas and supporting concepts are so well explained here, I don't just feel overwhelmed with terminology and disembodied facts. Your instruction style is best-in-class.

[@GeologyUpSkill]

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

[@AymarJoumagali]

Thank you Nick, much appreciated. I loved that your videos became longer than usually. Keep going!

[@GeologyUpSkill]

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

[@Coltbreath]

Simply Great!

[@GeologyUpSkill]

I wish it was that simple!

[@jeffholmes1362]

As always a brilliant video, very interesting and informative. Thanks for sharing

[@GeologyUpSkill]

Thanks. Much appreciated.

[@DrEvil814]

A most excellent video

[@GeologyUpSkill]

Thanks. Much appreciated.

[@waltertodd4479]

Interesting discussion. Ive seen these in lithium pegmatites here in southwest USA. They are called line rock and one walks along the direction of the line of garnets to find gemstone pockets.. Thanks Nick for another great video!

[@GeologyUpSkill]

Pegmatites are close cousins of UST rocks, particularly stockscheiders.

[@jpopelish]

Thank you. Very information dense.

[@GeologyUpSkill]

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

[@geoffgeoff143]

Very good.

[@GeologyUpSkill]

Thanks very much.

[@SRLGemstone]

Excellent explanation. Thank you vert much!

[@GeologyUpSkill]

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

[@SRLGemstone]

@@GeologyUpSkill Absolutely! Thank you again.

[@cribbsprojects]

Thanks for sharing such a long intro on this subject!

[@GeologyUpSkill]

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

[@benjaminfrancis-smith7157]

Thanks Nick, great content!

[@GeologyUpSkill]

Thanks. Much appreciated.

[@witherbossbros1157]

Thanks for sharing your field video and knowledge.

[@GeologyUpSkill]

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

[@canadiangemstones7636]

Another terrific geology lesson, thanks!

[@GeologyUpSkill]

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

[@mustafa_mohammadpoor20]

Very good

[@GeologyUpSkill]

Thanks. Glad you liked it.

[@farhadaraghi-vj3rn]

Thanks a lot

[@GeologyUpSkill]

Thankyou!

[@rodevans602]

Thank you!

[@GeologyUpSkill]

You're welcome!

[@lundysden6781]

this reminds me of pegmatite chambers, are they the same thing? I really love the longer videos. How can I send you some photos of samples? Thank you.

[@GeologyUpSkill]

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

[@fernandopo6399]

Please add to your references the Henderson mine paper - that is the one I remember! Had a tour of Henderson back in 1986... awesome mine then, and still going!

[@GeologyUpSkill]

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.

[@RustyAtwood-s1p]

Thanks for the info. Owner of Alaska Rare Earth LLC

[@GeologyUpSkill]

Have you seen any USTs in your rare earth deposits?

[@SunVas]

Thanks for sharing looong vids! so may I ask plz how much an acid bottle costs in Australia?99$? lol :)

[@GeologyUpSkill]

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

[@storytellerarchive746]

love the video's Luning so much Every time

[@GeologyUpSkill]

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

[@khalidmohamed6888]

Why not calling it a collorform texture?

[@GeologyUpSkill]

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.

[@alexdrockhound9497]

if these grew in water layers at the top of the intrusion dome, i dont see why it wouldnt essentially become a pegmatite.

[@alexdrockhound9497]

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

[@GeologyUpSkill]

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

[@kaboom4679]

Very reminiscent of greisen textures as well .

[@GeologyUpSkill]

USTs are often found in or near greisens.

[@tonylennon4328]

Biological Earth. 😳

[@smokenjoe4022]

This gentleman is looking at fossilized body parts! Just sayin

[@GeologyUpSkill]

This gentleman is made of fossilized body parts!

[@6AxisSage]

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.

[@retrothink]

Greatly appreciated. Am learning a lot from your videos. Quartz is also interesting as the cementing agent when sedimentary columns turn back into rock by pressure solution of quartz. google "Proposed Model for Shale Compaction Kinetics" and " Shale Compaction Kinetics: Parameter Sensitivity to a Range of Assumed Deposition Rates". Thank you again for the great examples. Will watch again.

[@GeologyUpSkill]

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.

[@retrothink]

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