The tektites found in Belitung Island also goes by another name, "Batu Satam", Satam Stone. They are famous for its black jet(Dense Solid variant of Antrachite) like luster

Bangka Belitung island = Island with stunning Granit rock formation.

Great video. Really clear explanation of how they formed. Super interesting content as always.

24000 kph, dang that's ludicrous speed

@jefferyindorf699

10 ай бұрын

At least it didn't go to plaid.

@jayphil2563

10 ай бұрын

​@@jefferyindorf699take my like.

@8fledermaus8

10 ай бұрын

​@@jefferyindorf699Mine too XD

Are you able to do an episode about the Murchison earthquake in Aotearoa/New Zealand in 1929? When I visited in 2010 I visited a small museum that had information about it, but so much has been forgotten since. There is a Wikipedia article, but it is quite meager. Thank you for making all of these videos. I've never seen one that I didn't enjoy.

Detonation of incoming asteroid = 360,000 megatons of TNT. Tsar Bomba (largest man made explosion) = 57 megatons of TNT.

Wow...the tektites look exactly like what they, if fact, are. Imagine the mystified feeling of finding them so deep in an alluvial deposit before our modern understanding.

Jeez. So there is maybe a flash of light followed minutes later by a roar (hyperpersonic rain?) of machine gun fire as the glass projectiles hit at shallow angles. Then nearly an hour later the shockwave hits...

Thanks! The power of asteroid impacts is truly terrifying.

That dumbbell tektite is so cool

Asteroid Impacts are nuts. Can you imagine 7200 Tsar Bombas being detonated all at once in the same place? What a sight to behold before being vaporized.

@DavidOfWhitehills

10 ай бұрын

The brightness vapourizes your retinas long before the full magnificance of the spectacle is reached. Armageddon Holidays are taking your money and not delivering, it's a scandal. Strangely, they've had no complaints.

Very informative, thank you very much. I'm 68 and I'm still learning something new everyday if I look for it

OMG I did look them up on eBay, and WOW they are in fact quite expensive. I had no idea about these stones, thanks for turning us on to this fact.

Tektites are also found in Australian deserts, have heard that Emus pick up stones including Tektites and store them in the Gizzard and occasionally Tektites can be found in the remains of dead Emus.

@subarunatsuki4145

10 ай бұрын

tought the emus keep them as form of occultism

Thanks for this one, highly interesting, as always: thx. As a request, I might ask : Are there any volcanic activities in Switzerland?

Thank you sir for covering this topic. Even most Indonesians do not aware of this kind of rock. However, I expected the consequence of the meteorite impact to the life-forms on the Earth to be mentioned. Perhaps it will be my homework.

yes i found many in the alluvial tin field of burma (south west of huahin thailand) .. very interesting content. thanks for your efforts

Love your videos. Thanks for sharing!

Wow ! Great video ! Thanks

Great video, thank you!

you rock!

2:50 As soon as I saw the shaded map in the context of your explanation, I instantly saw the impact from the shape of the shaded area: the side splashes and forward ejecta. It can't have been a nice day.

😮 thanks again. Perfect presentation 😊

fascinating! Subscribed

Outstanding video! Fascinating subject!

Incredible. Your best vid.

What a great topic! This was quite the interesting story

Very interesting! Thanks!

Wow, fantastic! Thank you! 😃☄️💥

Would love to see an in-depth video on the formation of Amethyst Cathedrals, like those found in Brazil.

Thanks!

What an interesting tidbit of geology. It's why we click for you.

Wow.. what a story!!

1:36 cooling in a low pressure environment takes quite a while i would only call it "instantaneously" in a geologic time frame 😅

I've heard of something called "The Dakota Sands" as the location of a lot of water. Supposedly, the sands extend from the Dakotas to my home state of Colorado. Is there such a thing? If so what caused it?

@tornadomash00

10 ай бұрын

my first thought is the northern interior seaway that formed during the triassic-jurassic (if i remember correctly) which may have left a lot of sand left over, and even left some fossilized stone ripples at the morrison formation

@Nervii_Champion

5 ай бұрын

It was the Younger Dryas Event. See Randall Carlson and Graham Hancock. Greenland was smacked by a large meteor during a meteor shower, and USA was hit by massive Tsunami of meltwater as a result. You can see the flood scars all over the world. The Great Flood.

Beeen watching your videos for a while but have you made a video about the great blue hole yet in belize

GeologyHub, there is s field in california known as the Big Pine Volcanic Field in Inyo County California. I would like to hear more about. Please make a video about it. You have already made a video on another volcanic field nearby known as the coso volcanic field, but this one is much more interesting

Utterly fascinating.

360,000 mega tons? That sounds so unbelievably devastating… are there estimates how strong the asteroid impact was that triggered the dinosaur extinction event for comparison? I would have thought a 360 GT impact would have been enough for that…

I love your channel thankyou for all the interesting topics. Id like to know how far inland have signs of the 1700 tsunami in Washington been found for the cascadia subduction zone rupture. I'm afraid it will be much sooner rather than later we get another an I'm in port Angeles Washington. I feel only the foothills will stop it . Thankyou😊

Thanks.

I can't even imagine the total devestation another asteroid exactly like this one if it hit the Earth today but in a far more densely populated area, than this one did.

I appreciate the $ and local economy reference.

I seem to remember these being in the early 60's Edmund (Scientific) catalogs. Prices were far lower, but still too high for a 10 year kid.

that is impressive

Forever fascinating

just a stones throw form here

I would like to hear about the origin meteorite of Moldavite, and each other tektite as well.

Belington island 🤣really funny!

Huh, I hadn't realized the crater for the source of the Australasian stewnfield had been found.

I sure am happy we know how to deflect asteroids now.

How shallow must the impact angle of such a large asteroid be to make the inertia of the moving asteroid overlay the energy of the explosion (instant vaporizing together with the impacted soil) so much that the resulting crater isn't a circular explosion crater?

@Dragrath1

10 ай бұрын

Its going to be a bit tricky as this depends on the amount of friction needed to drain a significant portion of its celestial momentum on impact, i.e. the impact must be at fairly low speeds relative to traditional impacts. There are several ways this can be achieved for example a gravitationally bound satellite in a low orbit forming such a crater is quite capable of making such a crater from various unstable orbital intersections on the other hand for an impact unbound to a planets Hill sphere and thus bound to the Sun instead there will need to be losses of momentum. There are two main ways this can be achieved atmospheric drag which depends on the density of the atmosphere along the cross section through the atmosphere and the related property of structural failure and subsequent fragmentation splitting up the parent bodies momentum unequally. In general as the properties of an asteroid changes how these interactions play out this is going to be compositionally dependent on both the material and how strongly chemically bound its constituents are. For instance a rubble pile only needs to get close enough to the Earth to get torn apart but most fragments probably aren't going to survive the impact with the ground and be large enough to produce a measurable crater but an asteroid intermediate of that with relatively resilient individual fragments might be able to do make an oblique crater from within the resulting secondary debris hitting and making their own craters. On the other hand a strong metallic asteroid on the same trajectory may be able to maintain far more momentum longer and if it was high enough up on its cross section such that its orbit didn't directly impact into the solid Earth it is even possible for the asteroid to make it through the atmospheric cross section retaining enough momentum to exceed Earths escape velocity. In another example for a world with little or no atmosphere you would actually need the impactor to be roughly parallel to the surface just barely skimming the solid body at the point of impact while on the flip side for a solid world with a very thick atmosphere like Venus pretty much any impactor is going to struggle to make a crater at all as unless its a very large impactor any falling rocks which remain are going to be falling at regular terminal velocity. For something like a comet or interstellar object it probably wouldn't matter what angle the object came in since it would have so much momentum relative to the Earth that the radial conversion of kinetic and potential energy into heat light and vaporized and or pulverized material thus the crater would be circular regardless. The big takeaway here is that for a durable metallic asteroid you will need a far more oblique angle than a undifferentiated chondrite would assuming the later survived enough to make a crater. If you want specifics its going to be a multivariate system of partial differential equations which must be calculated numerically barring special simplifying conditions. I saw a paper some years back which went into this somewhat though they didn't get into the shape of the crater as the focus of the paper was looking at Tunguska

Could you cover the exctinct Italian volcano Vulture? Thanks.

Near my house an apartment structure burned down & i found many specimens from all over the globe after they leveled the lot, turns out one of the tenants was a retired science teacher who fell asleep smoking,,,,,,,,didnt wake up (good-video)

Trés intèressant!

Why is the location at 2:22 different than the seemingly-precise location (the "O" in the yellow box) further north as shown at 1:52 ? Nitpick, and perhaps there's an explanation. 🙂 Cheers.

👍👍👍

I'm quessing these rocks are sold to rock collectors and not because of minerals in them. Other then the 18 cm diameter, that would be about 7 inches, all the other measures meant little to me. A bit lazy to write them down, open and find conversions to American. I just quess it's a long way and fast, but a smaller number in mph.

wow👍🏼that was close! thought it threw this lava bomb i found over to NW Ohio,,,must just been from Lake Superior Volcano 3Billion years ago the Glaciers brought down

About how hard I blast the toilet after Chipotle

are Hou sure about the energy relased?

How do they know there is a crater there buried under volcanoes?

@jimmyjames2022

10 ай бұрын

GeologyHub already has a video about this impact site and the Bolaven Volcanic Field, search the channel for *"Asteroid Mystery Solved; The Largest Recent Impact Crater was Found"*. In that video there is reference links to research into this impact.

Where is that next asteroid? What is taking it so long?

Can you do a series on how each state in the US was formed over geologic time? I think that would be extremely interesting for us all as we can all relate that live here in the US. Then, you could maybe do the same for each country.

@jimrichards7014

10 ай бұрын

Geology does not follow political boundaries.

@Dragrath1

10 ай бұрын

As @jimrichards7014 pointed out geology doesn't follow political boundaries thus the origin of various land masses will not follow state or national boundaries. For example much of the rocks which make up the west coast of Oregon Washington and British Columbia originated from Siletzia an oceanic plateau which formed out in the Pacific Ocean as a Large Igneous Province which has through igneous petrology been linked to the Yellowstone hotspot before accreting onto North America during the Eocene. However there is also another chunk of this province which due to its placement along the East Pacific Rise(much like how Iceland is along the Mid Atlantic Ridge) has been carried North on the Pacific Slab where it is currently being partly subducted & accreted into the Aleutian subduction zone. And that is actually a simple origin story due to it occurring recently (~50 Ma) geologically speaking most of Earth's continental crust is much much older with ages in the hundreds of millions to billions of years. Some countries even exist on multiple tectonic plates each of which has its own origin story before they were brought together twisted and smashed up into their current forms. The reason yo typically see ore belts comes from how arcs and terrains get smashed into each other during continental collisions.

@catherinekenyon7555

10 ай бұрын

​@@Dragrath1 A few years back I attended a lecture on the orogenesis of Scotland. Mind-blowing! 😮❤

Im not believing that 5mins to do 2000miles. That would cause friction melting of the object, not cooling. Its almost enough to put them into orbit infact and if they are glass, they wouldnt survive such a fall speed, as that would shatter them also. The speed required is not credible at all infact.

@tomspencer1364

10 ай бұрын

So what would be the terminal velocity of a small rock falling through the atmosphere?

@christianbuczko1481

10 ай бұрын

@@tomspencer1364 assuming they impacted at terminal velocity massively increases the initial velocity way beyond orbital escape velocity, and increases friction through the atmosphere and deceleration forces as they slowed.

@tomspencer1364

10 ай бұрын

@@christianbuczko1481 Terminal velocity is the speed that a falling body reaches free falling in the air. It is dependent on mass and density and shape. For a human it is about 120 mph, for a cat it would be a lot less. So a small stone probably hits the ground at less than 100 mph. You can find the formulas in any general physics text.

@Muritaipet

10 ай бұрын

2,000 km in 300 seconds is only 6,600m/s e.g about Mach 20. That's completely plausible for a larger object, but I'd agree the atmosphere would slow smaller ones quickly. But they could have gone to near orbit sustained by the blast, and come down later

@christianbuczko1481

10 ай бұрын

@@tomspencer1364 i know that but with an average speed so high, a slow stop at the end means the initial speed is utterly ridiculous. Try using those formule to calculate it. 5mins to do 2000miles is 24000miles per hour averaged across the whole track. escape velocity is 25000 miles per hour. If its about 150mph landing, that means the initial speed was far higher than the average, closer to 50,000 miles per hour..