The tectonics of slate belts - a view from N Wales
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- เผยแพร่เมื่อ 5 ต.ค. 2024
- Part of The Shear Zone Channel. Slate from North Wales has roofed the world - but these rocks also tell tectonic stories of how some sedimentary basins deform - not by faulting but by penetrative distributed strain. Follow Rob on a wet winter visit to classic outcrops on the edge of Eryri National Park (Snowdonia) - of the slates and the folded volcanic successions that lie on top.
#Eryri #snowdonia #geology
Thank you for explaining the geology of the area so clearly in such poor wet weather.
Thanks - it was a bit damp....
fascinating stuff and very well presented. great post, thank you.
Hello Rob, my knowledge of slate was restricted to schoolboy facts backed up by many visits to Llanberis and Blaenau.
I am surprised and delighted to come across your channel (now subscribed) with a proper explanation of these rugged Welsh landscapes which continue to fascinate and intrigue me.
Many thanks for uploading!
thanks - glad you're enjoying these films!
I used to live in a miner’s cottage outside Bethesda. Xx
Thank you so much for posting this, I live in Llanberis and look at Dinorwig Quarry every day but I’ve learnt so much from this video. Thanks again.
thanks - glad you found it useful!
Perfect view of the 'Indian Face' of Tryfan in profile at about 7.56min mark behind Rob. Rotate your screen 90° anticlockwise, and you will see the Indian and his headress. Spent many weeks at Og. Cott. as a youth, never studied the geolgy of the area properly, we just wanted to climb or kayak! Thanks for this insight.
Fascinating. I have walked and scrambled there many a time and it was helpful to have you explain the geology. I have never been to Blaeneau Ffestiniog when it wasn't raining. Amazing place. Thanks!
Thanks - yes - great rocks and its nice when the sun shines (unlike on the vid)...
I’ve lived in the. Land of slate and the weather was wet a lot. And misty. But very beautiful when it was a hot day. Thanks for sharing.
I spent 8 weeks in 1975 as a conservation volunteer building stone walls on the track below the Devil's Kitchen. Staying on Willy's farm (Gwern Gof Isaf?). One of the hardest times of my life.
You've been caught out by language differences at places such as 8:08. Tryfan is not pronounced 'Triffan' with an accented first syllable. It's more like 'Truvaan', with the emphasis on the second syllable. In Welsh, the 'f' is an English 'v'. The letter 'ff' is pronounced like an English 'f'. (And yes, there are a number of Welsh alphabetical letters which are made up of two Latin letters. They are pronounced differently to single letters. These include ch, dd, ff, ll, rh and th. And, once you understand how the alphabet works, the pronunciation is usually exactly according to the spelling.
Just about to go up to Eryri for a fortnight's holiday. Very happy to find your video now. I shall look out for the distorted green reduction spots and the ignimbrite fiamme.
Intrigued to read more about the Cambrian/Ordovician palaeogeographical context now!
Superb Rob... Took me back to 1976 and many times since. Great that you used your original mapping field sketches... xxx :-)
Very informative field video about deformation by penetrative strain. Thank you Prof. Rob.
Glad you found it useful - it's a classic area!
Interesting, thank you. 😊
Amazing......Thanks for the info, I would have never imagined such a density possible.
I’ve learned more about geology in this one video than I have reading multiple books! To be able to visualise the Dykes and the faults is fascinating. And especially poignant given what is happening near grindavik at the moment in Iceland.
Glad to be of use. There are a bunch of things elsewhere on The shear Zone channel that might be of interest. Not go too far into igneous geology - but there are some in the maps section and in tectonics.
It boggles me to imagine how much sedimentation is able to acumulate on an ocean floor so thickly layer upon layer to form such huge deep structures.
Indeed - it is amazing - but in the modern World not unusual. For example, beneath the South Caspian Sea there is over 20km thickness of sediment - of which 10km was deposited in the past5 million years. Probably quite a good modern analogue for a future slate belt....
Enjoyed your video. Very interesting, great explanation. Glad you popped up. Would love to visit there and see it for myself.
Thanks - lots more to be found on the channel...
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very interesting and informative Rob, do you know anything about the first hydro power station being a cover for a human hybrid cloning military program? , could be a good idea for a video .
not really in scope of this Channel!
@@robbutler2095 that's exactly what your'e supposed to say if you are part of the cover up rob, we know what your really up to....
I may have had a rum.... But I've never before noticed the high correlation between geological language and inuendo. 😳 3:30 and 4:46
Some explanation of the jargon would have been useful.
Apologies for creating some confusion -many of my films are made for students or amateur geologists... if you've a specific piece of jargon you'd like covering - let me know...
Great but it's a shame you don't call it by it's Welsh name: llechi 😐
ITS STILL SNOWDONIA .!!!!!!!!