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Hi Rob! Could you please show how to get the animation for the shear zone you showed in this video?

The way you say Lanzarote got me cracked up 😂 … nice documentary tho 👍

Visited a few years ago, can't wait to go back. Geology always fascinating.

This is so cool.

Great presentation of the lithologic units and structural evolution, and the folly of choosing fast-growing eucalypts over native species.

Great examples of the phased emplacement of granitic melts at the top of the batholith.

Question: if the county rock texture truncation at the edge of the boudins indicates they, the boudins, have rotated, what keeps the long axes of the boudins aligned with each other during rotation (that is suggestive of rotation in multiples of 180 degrees)? In other words, in general, wouldn't you expect to see the boudins rotated at some angle other than 180 degrees giving rise to a sort of en echelon pattern (a bit hard to describe in a TH-cam comment)?

I’m studying rum right now and hoping this will help me for my practical

Move over, Sherlock! This is the acme of detective skill.

What Playfair said of Siccar Point is vastly more apposite here: 'The mind seemed to grow giddy by looking so far back into the abyss of time.' PS. Entirely agree about indiscriminate rock coring. It's horrible. There are dykes on Arran that have been cored so viciously that they look like Swiss cheese.

Very interesting, thanks for sharing your knowledge.

I never knew how controversial it was to talk about plate tectonics till I read these comments.

A lucid and superbly illustrated explanation of an old controversy - illustrating how science is never 'settled' but advances through the clash of controversy and the jealous examination of evidence. If you think that another scientist is wrong, then however eminent you yourself may be, you don’t use your influence to get him cancelled: you out-argue him on the basis of better evidence and better understanding - or, if he does the same to you, you accept it gracefully.

Fabulous landscapes, fabulous geology, superb exposition.

Amazing that you filmed this on location. So beautiful. Thank you for sharing all your wealth of information

Do you think you might be able to do a video on rock metamorphosis during various stages of subduction? Maybe include the sedimentary rocks that take the ride down. I’m curious about the pressures at different depths and how the rocks undergo metamorphosis and become denser.

Somehow I knew you were going to do a video on this. I loved your video on Tapponier’s extrusion content. The tectonics in this area is fascinating. And deadly at the same time

To the layman this is absolutely impenetrable. 😢

Thanks for putting together such an informative, slick and professional looking video series on Alpine tectonics. One really feels like you are long for the ride but without the lung busting hikes up above 3000 metres of the foot of the Matterhorn. If anyone is interested there is a Swisstopo app that one can seamlessly switch between hiking, cycling, geology and even aviation. Someone has also uploaded to TH-cam some old low resolution 1980s series form a BBC and OU (Open university) course that covers similar parts of the Pennine and Helvetic Alps with the benefit of a helicopter but no mention of the slug of rock that resurfaced from the deep obviously something that has more recently come to light. OU BBC S236 Ep 08 of 16 Geology of the Alps Part 1 Geology OU BBC S236 Ep 09 of 16 Geology of the Alps Part 2 Geology

Aaaha

🎉🎉😂

Thanks for an excellent video. The magnitude is particularly large for an extensional fault, is there any particular reason? I expect my A level students will pick up on this!

This is wonderful context 👏👏👏

Great insight!

Thanks RB!

Thanks for this excellent compact analysis! This eastwards extrusion really is one of the most fascinating tectonic features in the Tibetan plateau.

The part of Tibet that is getting squirted out - ahem - makes me wonder two things i) is the extruded material from Tibet, overriding the rocks that are present in western China ii) is this also what is happening to Turkey as well? Getting squeezed out like a orange pip as bigger plates smack into each other.

Thank you! ❤

Many people don't comprehend how seismically active Northern India ,Nepal, and Tibet is. A major 7 + Magnitude earthquake occurs every 5 years and causes lots of deaths and destruction.

Thank youu so much!

Anyone else on Lanzarote during January 2024 to look at the geology? My wife and I are there 7th to 28th. We are both amateur geologists and would be happy to meet up and look at a few sites with others.

I fly out in 2 days time for some January sun and a look at the geology. Roger Trends recent book on Lanzarote geology is good. From another The geology of the canary islands I take just the relevant chapter. But it would be hard to learn in 20 minutes as much from any source as from this video. Keep up the good work Rob.

Excellent summary.

Very informative thank you really enjoyed

I dunno man, that age gap is... Vast.

In my experience, dating rocks is not enjoyable. If you go with them to a bar, they just sit quietly in the corner and stare at you. It's like talking to a wall. I mean sure, they are often well-structured with a nice cleavage, but lacking personality is for me a dealbreaker.

Fascinating insights into the structure of magma chambers, and the entire plumbing system. Future geophysics will be most insightful no doubt. Thank you for making and sharing!

So, you go up to the rock and say "hi, hows your day bee

Thank you for that.

Wonderful explanation!

Sorry folks - I miss-spoke at 1.47 - in speaking of the nuclear structure of oxygen isotopes! Beware this primary school error. Of course oxygen has eight protons!

At 1:47 you said that the oxygen nucleus has 19 protons. That should be 8, as it defines its atomic number.

Excellent summary and presentation of geochronology. Thank you!

very geeky 🤓

Hi , I'm confused at the point where you're drawing the non straight structure contours and you said it has to go into the subsurface? What do you mean by this because I thought the map shows the outcrops which are at the top of the surface?

Many thanks, was lucky in spring 23 to see the earlier lava flows. Would live to go again. I adore Iceland

Visited the mer de glace many times in the 1960s, again in the 1980s and did a good painting of it then, so sad to see the catastrophic melting since then. Those were great years, always skiing and early on a bit of climbing too. Many thanks

Thank you sir.

45 years as a professional geologist. Your videos make me feel like I’m back as an undergrad going on classroom field trips. Thanks!

Hypothesis of Toba supereruption impact on our species was debunked some time ago by several studies. It’s easy to find. Nevertheless good channel.