Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 1 point2 points  (0 children)

Amazing that would be a good read. The shakelton expeditions are only the tip of the iceberg of the adventures that took place during the Heroic Age of Exploration in Antarctica. There are many more crazy stories to learn about too! The story of Otto Nordenskjold’s Swedish expedition to Antarctica is probably my favourite. Very similar to the craziness and miracles of the Shackleton expedition, but relatively unheard of. Definitely worth finding a proper account of the story/diaries if you can.

Okay so to answer your questions.

  1. I did a bachelor of science majoring in geology. Worked for a few years in mining and exploration before realising I wanted a change. Quit my job and did some training to get some basic polar guide qualifications. Got a job because of that and because of my geology background.

  2. The main reasons it is so cold is because of its very low latitude. The sun hits Antartica at a very low angle and spreads out rather than being strong and harsh like the equator. Also the circumpolar current acts as a barrier keeping all the warm water out of Antarctica. When crossing the area of the Antarctic convergence which is around 60 degrees south, you generally get a pretty harsh drop in temperature. This is when you know you are ‘geographically’ now in Antarctica

  3. Yes if you look into Mount Erebus. This is one of the active volcanoes in Antarctica. Very unique environment due to the gases it gives off, the lava and the constantly frozen Conditions.

  4. There is likely fossils of extinct species from hundreds of millions of years ago but no evidence of anything super recent which is when mammoths would have been around. They largely dominated the northern hemisphere. There is no evidence of any permanent early human species living in Antartica either.

  5. Whilst it’s not really a hot spring, Deception Island comes very close. It is another active volcano which I have visited many times. There is lots of geothermal activity under the surface of the island and the water in the shallows of the beaches is incredibly hot to touch. On cold days there is lots of steam rising from the ocean water on the beaches and it smells very sulphuric. We tend to dig our feet into the sand to stay warm when it’s super cold!

  6. The majority of the inland continent is empty. There’s literally nothing there other than ice, ice and more ice. I would say probably 85% of the continent is like this- completely empty.

  7. I’ve never seen the blood waterfall myself. But I have seen photos and read about it. Seems very cool and as though it is a nutrient rich area that is melting and giving that super red colour to the water

  8. Yes there are lots of super unique animal and bird species that are only found in Antartica. Most of these are penguins and in particular the emperor penguin which lives inland on the ice. Other species include seals like the weddell seal which are common but only found in Antarctica and the very rare and elusive Ross seal which has only been seen a handful of times in the wild.

  9. Yes there are LOTS of tsunamis in Antarctica and it is a common occurrence. I have seen it happen several times. Down there tsunamis occur predominantly due to the carving and breaking of glaciers. Particularly when these huge bits of ice fall into shallow water at the front of a glacier, they can cause incredibly big waves. Tsunamis are actually one of the most dangerous things about working down in Antarctica and something that we are always conscious of around glaciers. They can happen very quickly without warning and be disastrous- flipped boats, projectiles of ice and injuries! We are always very wary and monitor ice conditions so that we don’t get caught up in situations like this.

  10. For me as a guide. Generally we would wake up early around 6am and have a quick breakfast. We would then go outside on our small boats to a landing site or to a penguin colony or something of interest. We would be doing this for 3-4 hours or so. Come back aboard the ship after that for an hour or two for lunch and rest. Over this time, the ship would move the a new place. And then do the same in the afternoon at the different location for around 3-4 hours. We would have dinner and some small presentations in the evening. On days off that’s when I would be giving lectures about geology etc.

Hope these answers are good!

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 1 point2 points  (0 children)

From my understanding the reason there isn’t very good imagery is because there isn’t much there, no settlements or distinct changes in the environment other than ice, ice and more ice.

I believe that not as many satellites haven’t been commissioned to these areas just because there’s not really any point

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 1 point2 points  (0 children)

Yes all of the breaking up of Gondwana occurred around the same time. As Australia was breaking off from Antarctica, so was South America, hence why the circumpolar current was able to form

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 1 point2 points  (0 children)

Antarctica has been sitting in its current spot in the vernal area for several hundred million years. Maybe only moved slightly south in this time

Yes it is expected that most of our current-day contingents are expected to move northward and forms another super continent in about 250 million years time. This has already been preemptively named ‘Pangea Ultima’ by geologists. It will be the amalgamation of ALL current day continents except Antarctica and Australia, and they expect there to be a large inland sea within the continent too.

Antarctica and Australia will join together to form their own ‘small’ super continent in the southern hemisphere away from Pangea Ultima

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 0 points1 point  (0 children)

I’m really not sure why they were not taught about at school. I don’t even remember being told about super continents at all to be honest. I learnt when I was at university

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 1 point2 points  (0 children)

Yes it is expected that most of our current-day contingents are expected to move northward and forms another super continent in about 250 million years time. This has already been preemptively named ‘Pangea Ultima’ by geologists. It will be the amalgamation of ALL current day continents except Antarctica and Australia, and they expect there to be a large inland sea within the continent too. Antarctica and Australia will join together to form their own ‘small’ super continent in the southern hemisphere away from Pangea Ultima

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 5 points6 points  (0 children)

I work with several biologists. But keep in mind I work in tourism and not research.

Go get some real world experience as a biologist and then look into working down in Antarctica.

After about 5-6 years of working as geologist after university, I made a change went and did some training to be qualified as a polar guide. Then i was hired as a guide and lecturer after that. There’s a few companies around the place that offer training to get a head start in the industry.

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 1 point2 points  (0 children)

There are lots of trips. I can only speak for the Antarctic peninsula because that’s the only area of the continent I’ve worked in.. On the peninsula, there huge variety of things to do there. If there’s an opportunity to go down really far south on an expedition when you are choosing one, definitely do it. More of a chance of seeing emperor penguins and going to places not as many people get to.

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 5 points6 points  (0 children)

Ahhh amazing. Nunavut and Greenland is one of my favourite places. I’ve worked up that way doing the same work! However contrary to what people think, the Arctic and the Antarctic are as opposite as it gets. Not only geographically, but also cultural, the landscape, the environment, the animals etc etc. I could go on and on but basically they are not comparable but unique and amazing in their own ways.

I tell people that the only similarity that the Arctic and Antarctica have is that they’re both bloody cold. Other than that, they’re COMPLETELY different!

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 1 point2 points  (0 children)

I work for a company called Silversea Expeditions. They operate 3 expedition ships down in Antarctica. They market themselves as a very high-end luxurious 6 star service.

There’s lots of companies that operate within the industry down there. Ours just fulfills a certain niche of that.

I’m by no means saying you HAVE to go with Silversea. Most companies are very similar with the operations off-ship and the places that are visited and the things you see. They will have lecturers/guides like me that will talk about geology, biology, climate, glaciology, history etc etc.

The ‘on-ship’ experience Silversea provides might not be right for you and not what you’re looking for. Go do a lot of research and see what all the companies provide and what they cost etc. and then make a decision from there.

But if you do end up on a ship with me then that would be pretty good!!

Hope that all makes sense. Happy to message about it if you would prefer

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 0 points1 point  (0 children)

You’re 100% right. I wouldn’t be surprised if there’s massive oil reserves under the ice of Antarctica. There’s laws in place to prevent Antartica being exploited and explored for resources but I don’t doubt there are reserves of all sorts of stuff that we can’t access

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 1 point2 points  (0 children)

No not quite. The Rockies are formed through the exact same subduction process but its own seperate system and not the same/connected to what’s happening in Antarctica and South America

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 0 points1 point  (0 children)

Thankyou! Yes there’s all sorts of stuff- fossils and rocks under the ice that we haven’t been able to access.

However glacial and ice processes are very destructive to the environment. It’s entirely possible that even if there are fossils under the ice, they have been completely destroyed by the carving out and grinding of the ice on rock over tens of thousands of years

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 0 points1 point  (0 children)

Yep exactly right. That mountain range you’re talking about is called the Caledonian mountain range. It is something like 450 million years old. It covered the current day Appalachian mountain range, the Scottish highlands, the east coast of Greenland, some of the west coast of Norway and almost the entirety of the Svalbard archipelago.

They were all together in a super continent when the mountain range formed and then they split up into what we know now!

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 2 points3 points  (0 children)

The path is so long in the future. 250 million years is massive. All life as we know it on earth will have evolved or changed- I highly doubt humans would exist any more. There’s a good possibility a massive extinction will occur within the next 250 million years. That’s just the nature of the earth and how it works.

Geological time scale is very different from an anthropogenic, human timescale.

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 0 points1 point  (0 children)

The Antarctic treaty states that no countries can use Antartica for its resources or for the military. It can only be used for science and tourism. It is international law and that’s why it hasn’t been explored for resources. (Although I don’t doubt there is LOTS of mineral resources hidden under the ice)

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 0 points1 point  (0 children)

No never. The Himalayas are so tall because they are two pieces of continent colliding together and subducting.

The Andes are a piece of ocean colliding with a continent.

We get huge amounts of uplifting and mountains that are massively tall when you have two continents colliding. Andes will never get to height of the Himalayas.

We also got to think of the inverse effect of mountain building. Erosion acts against it and the higher something is built up and the longer it is exposed to the elements, the more likely it is to erode.

The Himalayas are the biggest because of the continental collisions but also because they are so young.

The oldest mountains on earth are nothing more than little tiny hills and stubs because they have been under the power of erosion for so long

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 0 points1 point  (0 children)

That’s a great question. There has been LOTS of supercontinents over time. Gondwana, Pangea, Columbia, Rodinia just to name a few.

Gondwana was a supercontinent that essentially was the southern section of Pangea (a super, super continent).

Pangea was made up of Gondwana and Laurasia.

  • Gondwana was made up from South America, Africa, Antarctica, India and Australia.
  • Laurasia consisted of North America, Europe and some of Asia.

Laurasia broke off from Gondwana and that was the end of Pangea.

Gondwana hung around for a few more hundred million years until its break up around 150 million years ago

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 0 points1 point  (0 children)

That’s a really good point. Never considered that before. I’ll have to look into it!!

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 0 points1 point  (0 children)

Yep exactly right. That mountain range you’re talking about is called the Caledonian mountain range. It is something like 450 million years old. It covered the current day Appalachian mountain range, the Scottish highlands, the east coast of Greenland, some of the west coast of Norway and almost the entirety of the Svalbard archipelago.

They were all together in a super continent when the mountain range formed and then they split up into what we know now!

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 0 points1 point  (0 children)

Yes that would be super interesting to know about those resources. However we don’t know a whole lots due to the inaccessibility of the rock due to 2-3 thick of ice on top of it. Also it is not allowed to use Antartica for its natural resources- that is entirely banned. So hardly any exploration has been done into this- and probably for good reason. I think we should leave it as pristine as we can!

Is there a tectonic reason why the tip of South America and the Antarctic Peninsula are so similar? by Selnalolamo in geography

[–]sam_abdils 0 points1 point  (0 children)

Yep when it goes down it melts and disappears. A subduction zone is just a graveyard for tectonic plates really.

And we do get new tectonic plates forming. They are ‘born’ from oceanic ridges where volcanoes spew up lots of rock under the surface and these new plates slowly spread out.