The Recent Megaeruption in Greece; The Kos Nisyros Volcano

Рет қаралды 270,826

Күн бұрын

Within Greece is a largely hidden volcano which was the site of one of the world's largest eruptions in the last 1 million years. Largely hidden from view, it encompasses sections of both the islands of Nisyros and Gyali. This megaeruption deposited more than 200 meters or 656 feet thick of pumice and ash in a single eruption. The pumice contained in this layer is now widely mined for use in concrete. So, how long ago did this eruption occur? Why is this apparent volcano no longer visible? This video will answer these two questions and discuss this caldera forming eruption.
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Thumbnail Photo Credit: Department of Foreign Affairs and Trade, Flickr, CC BY 2.0
0:00 Greece, a Nation of Volcanoes
0:30 Greece's Largest Eruption
1:03 Location of the Caldera
2:01 Caldera Age
Google Earth imagery used in this video: ©Google

Пікірлер: 232

@GeologyHub 2 жыл бұрын

The Kos-Nisyros Caldera forming eruption was a mere 10% larger than the ~1620-1610 BC eruption of Santorini. Regardless, it represented the single largest volcanic eruption within Greece within the last 1 million years. However, here is where it gets interesting. There is strong evidence for the existence of each of the three proposed calderas in this video. They could represent older eruptions from the same volcano, but more studies are needed. What are your thoughts?

@Lessinath 2 жыл бұрын

My thoughts are that it seems to me that a lot of otherwise conventional stratovolcanoes repeatedly go caldera, rebuilding each time. I think it's quite plausible that this is one of those, and I'm very interested in what is going on at depth that separates volcanoes that do this from ones that don't.

@temosofthecommunistrepubli2637 2 жыл бұрын

What was the most recent eruption in Greece?

@Godzillaminusone737 2 жыл бұрын

Hey man can you cover the recent large eruption of Sakurajima

@GeologyHub 2 жыл бұрын

@@temosofthecommunistrepubli2637 1950 in Santorini

@temosofthecommunistrepubli2637 2 жыл бұрын

@@GeologyHub oh ok . I thought some other volcano could have erupted but surprisingly it hasn't.

@brennuvargr4638 2 жыл бұрын

Once again, proof that you are the best volcanology channel on KZfaq. The information is very succinct and to-the-point, which I (and clearly many others) appreciate! :)

@Ryan98063 2 жыл бұрын

The De facto source

@DEVINENDERS 2 жыл бұрын

Pure facts!! His videos are always the first one to pop up for me. Love watching them

@juice8292 2 жыл бұрын

Nailed it 100%....I love these!!! ❤️

@And-lj5gb 2 жыл бұрын

Ah, I've once heard that the Kos-Nisyros-Giali complex had potential for very large eruptions but I didn't know the details. Thanks for covering this!

@GeologyHub 2 жыл бұрын

No problem. Of course, it gets a bit more interesting when you realize that Gyali and Nisyros count as separate volcanoes

@user-dz5ki4jp2o 2 жыл бұрын

In mythology part of Gigantomachia take place there exactly. Polybotes was chased through the sea by Poseidon and came to Cos and Ruler of the Seas, breaking off that piece of the island and threw it on him. That giant rock called Nisyros. Some names of Poseidon is Sιsixthon (Σεισίχθων) - him who sake the earth or Enosigaios (Ενοσίγαιος) tremor, klonismos (κλονισμός) of earth.

@matthewcraig8926 2 жыл бұрын

At first I was thinking "recent megaeruption" as in the last couple days. But you're talking geological time. Shows how much I know lol. Anyway, I find your channel most educational. I share your videos with my nephew, who is 12 and fascinated with geology.

@Necrophite78 2 жыл бұрын

Wow interesting as always! I did know that Nisyros contains an active volcano, I didn't know about the caldera! Thanks for teaching me something new everytime you upload a video :)!

@harrietharlow9929 2 жыл бұрын

Greece is quite interesting-- culture, historically and geologically. The whole northeastern Mediterranean appears to be one big subduction zone. I wasn't aware of such a large caldera in that area, though I am not surprised that such a large camera exists.

@davidlafleche1142 2 жыл бұрын

However, the Earth is less than 10,000 years old.

@harrietharlow9929 2 жыл бұрын

@@davidlafleche1142 Radiometric and other dating systems say otherwise.And yes, I am a Christia. However I use common sense.

@davidlafleche1142 2 жыл бұрын

@@harrietharlow9929 You must take Genesis as literal history.

@p1ll 2 жыл бұрын

I never knew I was such a volcanology fan until I found your channel

@CosmicStargoat 2 жыл бұрын

I'm so glad that I found this channel. The most important and devastating force on this planet is largely ignored by humanity.

@sanderkramer6555 2 жыл бұрын

I really like the content of your video's. Finally some one who makes educational video's without the "hollywood" effect. Keep up the good work. I was wandering of you can do a topic about the Eifelvulcano's in Germany or the dead old shieldvulcano that would be lying under the so called " waddenzee" in The Netherlands.

@GeologyHub 2 жыл бұрын

I have an older video on the Laacher see and another video planned on the east Eifel field. Link: m.kzfaq.info/get/bejne/f7J7mNKF1Z7Lf4U.html

@sanderkramer6555 2 жыл бұрын

@@GeologyHub Thank you for the link and the information in that video. 👍🏻

@thomasdrivas5317 2 жыл бұрын

There's a ancient volcano in Australia called the Cerberean Caldera which underwent a super eruption 374 Mya, which in turn contributed to the Late Devonian Extinction event . Please do a video on this volcano I want to find out more about it .

@DavidleViseur 2 жыл бұрын

I’d love to hear your take on Milos! Its geology and huge caldera are both beautiful and scarily amazing!

@heathstott 2 жыл бұрын

Excellent analysis, very informative and a very enjoyable channel. Thank you.

@notthatdonald1385 2 жыл бұрын

So glad I found this channel.

@cwlong9667 2 жыл бұрын

Always have had an interest in volcanos. Thanks for the detailed studies!

@JackMellor498 Ай бұрын

Literally sitting in a bar eating moussaka and drinking a cold beer right now in Mandraki on Nisyros on the edge of this caldera. You make amazing content dude!

@aleksejunas 2 жыл бұрын

Thank you for in depth informative videos, it’s humbling to see what our mother is capable of doing

@dogzilladdd6096 2 жыл бұрын

Wow, this amazing! I did not even know about this! Well now I do!

@HoushouRattengod 2 жыл бұрын

Out of curiosity. Is there an average distance from a subduction zone in which you will typically find volcanic activity? Or is that dependent on how thick the plates are?

@fiodarkliomin1112 2 жыл бұрын

Cool content!!! Thank you for your job

@melon_coaster6393 2 жыл бұрын

Great video. I still remember when I suggested Nisyros as a video topic and now there is a second video about that region. I never knew there was such a large submarine caldera. Are there any sources where I can learn more about that?

@C4rn1fex01 2 жыл бұрын

I'd like to see a video made by yourself that explained the subterranean aspect of volcanoes in more depth. How do we know there are massive lava chambers under there? How do we build an image of the anatomy of a volcano if we can never go down into it and see? New comer to the channel and I love your work. Thank you for the great videos.

@GeologyHub 2 жыл бұрын

General gravitational anomaly surveys, and how quakes pass through an area are a good indication that a magma chamber is present. Energy waves move at different speeds through a liquid (magma) than a solid (host rock)

@riverAmazonNZ 2 жыл бұрын

It’s hard to understand the lifespan of trees, but volcano time is a whole ‘nother level.

@robertrobb3159 2 жыл бұрын

I had the opportunity to work at China Lake, near Ridgecrest, CA. While there I was able travel extensively in the area. In one area not far from a geothermal plant was a field covered with soccer ball sized chunks of obsidian and on top of another mound were very large boulders of pumas. Also driving north on state road 395 can be seen a tall volcanic flow. Then just a few miles more north can be seen a a tall cinder mound. There are many volcanic rocks all around the area.

@SteveSmith-zz4ih 2 жыл бұрын

Do you give a Heads up on peoples request?, definitely would help. You do a good job on these narrations, that's why i subbed

@rafaelvalimfernandes 2 жыл бұрын

Excellent video

@yvesembrechts 2 жыл бұрын

Two years agow i went on a trip to the Nisyros volcano. It was amazing to walk inside the biggest subcrater. But it really smells bad! Once again great video!

@katgrey6239 2 жыл бұрын

Thanks for the info.! I find volcanoes very interesting. Although, I don't enjoy the devastating effect.

@kc3718 2 жыл бұрын

I've been in the present caldera at Nisyros, it melted my shoe off and I had to hop out ...not before I collected some sulphur through. Given the white Island eruption I don't think I would do that again, as you can hear the steam rushing about like storm waters in a urban sewer system after a deluge.

@adriennefloreen 2 жыл бұрын

Wow, be careful of melting your shoes or burning your feet near volcanoes, I once burned my foot on some tiny vent very far from a volcano and I've heard several other stories of people who have too, yours now included.

@lordgeorgemaster 2 жыл бұрын

I have been to this volcano on several occasions over nearly 30 years. Its size really is under stated, especially when looking at the size of the origional caldera. The internals and crater of the volcano have changed with active hot spots moving on a yearly basis. I am also sure that there are several areas where the ground has been rising, which backups up the theory that the chambers are filling below it. Very pretty island to explore with amazing views.

@Codysdab 2 жыл бұрын

The last time I was there I was caught up in a huge dust devil that filled the inner caldera, it was pretty impressive. I love that volcano.

@NikosNisyros 2 жыл бұрын

If you ever visit the island of Nisyros, you should go and see Stefanos* crater with your own eyes. You can even walk on the volcanic crater's surface and this is located right under the village of Nikeia. It is an amazing scenery to be honest with ya

@donaldscheer5206 2 жыл бұрын

Excellent! Video! You Are Awesome!! Thank You!

@ryzen_9-3900xt 2 жыл бұрын

idk why but i LOVE the way he says volcanoes

@thexmarksthespot 2 жыл бұрын

Please make a follow-up video regarding to Taal volcanos latest phreatomagmatic burst, I appreciate your content sir. 🙂 Taal had 8 short-lived burst and 15,600+ tons/day of SO2 emission.

@drjk7565 2 жыл бұрын

I wonder what are your thoughts on Merapi's current status? I haven't heard of two lava domes at that particular volcano before, and the south-west lava dome is particularly huge. Could we see another large eruption like the one in 2010, or will it be smaller than that?

@richardgaspar4590 2 жыл бұрын

Interesting topic, i watched a documentary about the bronze age eruption on Thira that destroyed the settlement there.

@dagidsoe3954 2 жыл бұрын

Great video! I have a question: Are volcanoes in subduction zones generally more "explosive" than the ones seen in divergent zones? (e.g. compare Iceland and Hawaii with Tonga and Mediterranean volcanoes) Dag

@jeremiasrobinson 2 жыл бұрын

Thanks, Timothy!

@funnyperson4027 2 жыл бұрын

Can you do some Fijian volcanoes? I heard there are a large amount of calderas dotting the bigger islands

@stuart2071 2 жыл бұрын

Is it possible for a pyroclastic flow to travel on the surface of a body of water?

@melrichardson7709 2 жыл бұрын

Definitely. 👍

@erdemkara4143 2 жыл бұрын

Thank you for this, can you cover volcanoes from Turkey in the future?

@mosin9105 2 жыл бұрын

Thank you

@Mi4H786 2 жыл бұрын

I'm freaked out because there are so many volcanic eruptions going on one after another. La Palma, Tonga, Sakurajima and many more. It's best to evacuate from these hotspots to safer zones.

@davidwhitworth5724 2 жыл бұрын

I was talking to someone online about this and they explained there is a theory that the increased volcanic activity could be due to the solar minimum, which has allowed more cosmic radiation to strike the earth. The thinking is that the cosmic radiation energizes the earth in some way. Interesting theory.

@huttboynz4422 2 жыл бұрын

Could you please do a video on Mt Ruapehu I’m NZ.

@kadourimdou43 2 жыл бұрын

Your videos are really good. Would you ever do a video on what was called “The orphan eruption” or words to that effect. I can’t remember where it’s been suggested it took place, but it was somewhere in Indonesia I believe.

@1234j 2 жыл бұрын

There was the Orphan Tsunami of 1700 in Japan, caused by a Cascadia earthquake. Do you mean that? It's covered by Nick Zentner, and any of his videos are worth viewing.

@kadourimdou43 2 жыл бұрын

@@1234j That's not the one. It was a volcanic event they found by looking at the Ice cores, and tree rings.

@chrisrifkin3670 2 жыл бұрын

@@kadourimdou43 the 1808 mystery eruption?

@gregalbert4033 2 жыл бұрын

Good stuff! I was wondering...could you detail the volcano that existed to produce Crater of Diamonds State Park in SW Arkansas? Diamonds, I have been told, only exist in/with Kimberlite, which is volcanic.... Thanks 👍

@azmountains4113 2 жыл бұрын

He did Crater of Diamonds. Link below kzfaq.info/get/bejne/obNkf9x13dGad2w.html

@dralord1307 2 жыл бұрын

Diamonds can exist in many different areas. The plate shelves that lead to the deeper parts of the ocean do tend to have diamonds. Kimberlite pipes are also capable of bringing them up from depth. The whole of the central usa used to be under a large ocean. Over time the ocean depth decreased and the land depth in some areas increased. There is the New Madrid fault in the area "not sure if it exactly has to do with Crater of Diamonds but you can check online." The area has a long active geologic history.

@gregalbert4033 2 жыл бұрын

@@dralord1307 thanks...but New Madrid faulting area has nothing to do with it, that I'm sure of. And since it is the ONLY known incidence of kimberlite intrusion WITH accompanying diamonds in the U.S., I figured there had to be a volcano somewhere that would explain it.

@CGMB777 2 жыл бұрын

@Nisa Suharni I'm getting 'sweet' vibes, sweet from american slang 😉

@ZombieSlayer-dj3wb 2 жыл бұрын

So is there such thing as a caldrea forming erupton then or just collapse ?

@laurentdurdilly7707 2 жыл бұрын

Could you make a video about Milos in Greece ?

@timberry1135 20 күн бұрын

Only just seen this one. I suspect that the caldera is larger than you say due to the hot spring in the western part of Kos (Thermae), Bubble beach in Kefalos Bay (CO2 bubbles up just offshore there with a likely volcanic origin) and when you drive through the hills at the eastern end of Kos, there are thick ash/pumice depositsvisible on the roadsides

@ptocknell 2 жыл бұрын

I would like to hear more about Mole Hill or Mount Rogers in Virginia!

@harrietharlow9929 2 жыл бұрын

This is extremely interesting. Just as well there were few or no humans in the area.

@matthendricks9666 2 жыл бұрын

Considering that those photos are one million years old they have quite good quality.

@randybenton3812 2 жыл бұрын

Omg more volcanos more eruptions needed .

@tempusfugit9009 2 жыл бұрын

i check this channel like most check the twitters and facebooks/meta w.e lol... good stuff thank you for the time.

@qinoqino7643 2 жыл бұрын

Sure would like to know what is going on with the volcanoes active now

@augustolobo2280 2 жыл бұрын

You gotta do a 100k subscribers special

@jemakeupartistry 5 ай бұрын

I stood inside the Nisyros caldera when i was a child! I stunk of rotten eggs and melted my shoes 😂😂

@michelebushnik2874 2 жыл бұрын

Wow!!!!

@CAT-ow8oh 2 жыл бұрын

Surprised we didn't cover this in my history class

@benmackley4329 2 жыл бұрын

Amazing videos but I am pretty sure it's the mantle wedge above that partially melts and not the subducting slab's crust which generates magma (1:19). Common misconception I only learned it recently in a lecture.

@FZR650 2 жыл бұрын

Great videos! What’s your opinion on Mt. Rainier? When do you think the next eruption will happen?

@halsnyder296 2 жыл бұрын

Do you know how the valley (Kohala Forest Reserve, (Waimea valley?)) on the island of Hawaii was formed?

@abalcsika 2 жыл бұрын

Hello! I recently found it on your videos and channel, the content is awesome, all in one place that interests me. In your first videos, you said the content more slowly (I’m moving from the first content to the present day), which I understand, but it has become too fast now, please slow down a bit. My English is not perfect and I don’t feel like reading a caption because I can’t learn from it. Thank you for your understanding, great hug to you!

@tomp_ 2 жыл бұрын

This is a similar caldera to Cleveland volcano in alaska

@paulwinger3300 2 жыл бұрын

Any news about the Super Volcano in Naples?

@temosofthecommunistrepubli2637 2 жыл бұрын

What was the most recent eruption in Greece?

@panosts432 2 жыл бұрын

I think 1950's Santorini with a small eruption.

@SrNaitabes 2 жыл бұрын

Tell us about the sinkholes please =)

@abdullahsiraj4028 2 жыл бұрын

Can you please do italian volcanoes, including Mount Vesuvius ? Thanks in advance !

@caiolucas8257 2 жыл бұрын

He has done most well known Italian volcanoes including Vesuvius, Etna, Campi Flegrei, Ischia and Stromboli.

@fallinginthed33p 2 жыл бұрын

That's a lot of pumice in one eruption. What is it used for now?

@ruthhoge5445 2 жыл бұрын

ICh stand vor Jahren in der Caldera und war sehr demütig

@funnyperson4027 2 жыл бұрын

I didn’t even know that this existed

@m.o.m.basiclifeskills2986 2 жыл бұрын

How high was the plume?

@gardencornrobber 2 жыл бұрын

What about the recent Japan eruption? Your the expert.

@2012Ascenscion 2 жыл бұрын

What was the recent Tonga eruption on the VE Index?

@stefaniebraun3319 Ай бұрын

VEI6

@gojirageek Жыл бұрын

small question what is the difference between a super and mega eruption

@GamingCeo420 11 ай бұрын

Super is 8 Mega is 6-7

@bitbugsbyte 2 жыл бұрын

Very interesting. Is it dangerous to visit Greece because of the volcanoes? That's the reason I'm afraid to visit Naples in Italy!

@Ptolemy336VV 2 жыл бұрын

Greece is 99.999999% volcano safe as the most safest answer to give. Greece is very diverse and very spread out with truly immense natural diversity vastly outstripping the size of its lands. Its fully safe to visit it. Greece has all the natural occurences that you can find on the planet. But to die from it or to even experience it is very rare. I visited Greece 50 now, never experienced anything

@bitbugsbyte 2 жыл бұрын

@@Ptolemy336VV I am planning to go there on Sept 11 for the parade!

@janiliebenberg4407 2 жыл бұрын

Santorini is my favorite Greek island.

@timothy4191 2 жыл бұрын

How large was the volcano in the (syria-jordan-northeastern Israel area in 900bce-500bce? I have read it was huge.

@randybenton3812 2 жыл бұрын

So far so good god willing

@josemanuelmurguia8970 2 жыл бұрын

HI can you do a video about the Iztaccihuatl in mexico?

@LemonLadyRecords 2 жыл бұрын

I would like that too. There's a lovely romantic legend about it involving Popocatépetl. Great for Valentines!

@lauradierking1516 2 жыл бұрын

There surc have been quite a few volcanos over the last 4 weeks.

@rainydaylady6596 2 жыл бұрын

What do they use the pumice for?

@vitalijslebedevs1629 2 жыл бұрын

As a natural abrasive sponge for your bathroom (mostly feet). Only thing i have on top of my head..

@haraldschurr1035 2 жыл бұрын

pulverized as abrasive additive in all kind of kitchen and bath sink cleaners.

@spocksdaughter9641 2 жыл бұрын

Really good for impossible deep rust, if you can get it in blocks. I have seen it a babacue grill cleaner too.

@ridwanhusain3445 2 ай бұрын

is it active?

@CarolRogers50 2 жыл бұрын

They need to put these under history 1000’s of years ago define now and past

@robertevans8126 2 жыл бұрын

shared

@royalspin 2 жыл бұрын

Must have been one hell of a tsunami afterwards .

@Black_Sun_Dark_Star 2 жыл бұрын

How is a VEI 7 considered a megaeruption?

@bobbybates2614 2 жыл бұрын

It looks like it going to be an ice age cometh

@peterdarr383 2 жыл бұрын

2 Days ago . . recent . . . 1 Million Years ago . . . geologically recent . . . .

@diGritz1 2 жыл бұрын

That's not how I remember these eruptions.

@Javaman92 2 жыл бұрын

Recent?

@MichalisIakovidis 2 жыл бұрын

Do you believe that an eruption might occur in the following months? 🤔

@cryptonite8495 2 жыл бұрын

I suppose relative to the formation of the Earth, 161,000 years ago is "recent." 😀

@Pinefr0st 2 жыл бұрын

Ah, Kos. Or some say Kosm.

@norcalpinoy9618 2 жыл бұрын

I'm using pumice to clean ring stain in the toilet bowl..I like it..it removes stains right away.

@geosync9742 2 жыл бұрын

Hey man great stuff like aways but slow down on the videos. I fear you're going to run out of volcanoes to cover. And that will be a sad, sad day for us.

@mrblock1318 2 жыл бұрын

200m thick of sediment deposit in 24hours... gosh...

@patsyhairston8277 2 жыл бұрын

With alll our tech we should b able to control all the volcanoes. Maybe dril some places in side away from houses and people towards ocean where it will make more land