The Mega Tsunami That Smashed Eastern Australia
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- Опубликовано: 2 окт 2024
- #megatsunami #tsunami #newsouthwales #australia #tidalwave #naturaldisaster #geology #geosciences #sydney #newcastle #stockton
This is part 2 of the story of the massive wave that inundated a 400 kilometer stretch of the coastline in New South Wales. We will explore what evidence exists and what notable features we can see in the present day.
We cover a tiny section of Sydney that may have tsunamigenic evidence before heading to Newcastle and following the coastline north from there, beginning at Stockton Beach. We have various chevron formations and beach depositions that stretch from between 10 to 20 kilometers inland and we also cover the phenomenon known as the "shadow effect". The shadow effect occurs when landmasses come in the way of the direct line of the tsunami, stopping it from unleashing the full brunt of its energy onto the coastline and beyond. We also look at areas that may have some signs of historical tsunamis and mega tsunamis, before moving into how tsunami deposits are categorized and what evidence is required to class a deposit as tsunamigenic.
Link to Part 1:
• The Mega Tsunami That ...
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The tsunami that smashed eastern Australia inappropriately.
Props for citing your references
The thought of a mega tsunami is terrifying but is very much real. I have had dreams of being on the coast and a massive. Wave smashing the land and sweeping me into the water. It feels so real I dunno if it's a past life memory or what but I've always been terrified of the ocean and have a very healthy respect for it.
I'm right there with you. I'm terrified of mega tsunamis and rogue waves. I refuse to get on a ship because of it haha.
Simular like you in 1997 i had dream where i am standing on the north side of Sydney(Cremorne& Mosman area ) & looking at Opera house only small part of highest roof peach was standing outside of water...everywhere are huge fish jumping outside of water and everything are bit dark ...Even today i have shivers thinking about this...I said to my family and friends about dream but we are still here right on the coast.
@@OzGeologyOfficial same here I have zero desire to go on any cruises etc I'm happy staying on land or flying only
If a wave this size gets your gonna go pop from the pressure most likely
I used to work for a lawn mowing company and some of my sites was in Dungog and if the land scape could talk, it would be interesting. Rock deposits high on hill sides, gullies and the view from the Barrington tops area needs to be visited. There could be evidence this title wave you are talking about in this episode might have gone as far as Vacey, in the upper Hunter which is roughly 65 miles inland? I live in Newcastle NSW and you missed lake Macquarie, Belmont to Swansea is one sandbank. Thank you for your time and effort.
This is making a lot of sense to me now, I'm from Newy too and the few times I've ventured up high in the gog I always thought it was very unique geography for this reason.
Edit: and as someone who has once gotten stuck in the middle of Swansea channel when the tide went out, I concurr with your Sandbank comment
When I asked for your opinion on Stockton dunes in the comments I didn't expect a comprehensive episode as a reply ❤❤ Wow!!
Thanks 😊
I go up to Stockton 3 or 4 times a year for a week or 2 of 4wding and fishing, I'm going to look out for what was described in this video next time I go up.
go back and have a look at one mile beach at Forster. In the direct S/E you can see a very obvious path of a wave retreat. Also, the high ground beyond the headlands about 250 meters or more inland and around 100 high you will find the large boulders discussed in your first episode. On the north end is huge sand dune deposited from a southeast direction. It's noted in Cooks Diaries as he sailed north from Botany Bay.
really interesting, and living in Newcastle a little bit terrifying! 22,000 years ago, and 20ish thousand-year period! OK.
Another great video, thankyou. The amount of effort you put into this is obvious. great work.
The use of images which do not illustrate the point you're asserting is becoming frustrating. Use leaders, pointers, graphics etc., but, highlight the features within the images - especially, when even to a trained eye, they aren't easily identified.
Thanks for your feedback. I'll try to incorporate more in future videos.
@BGone-mb7wz oh you poor thing,here is a tiny violin playing for you ya snowflake.
Bit harsh tbh, but true as well. Editing takes ages, and it is more work.... but probably more a gain than waste.
@@Healthliving1967 ... Really??? A bit of constructive criticism was given and you berate them for it. Grow up. Actually, your name says it all really.
what images are you talking about??? every time i seen is around Newcastle, i know because i LIVE HERE
There are large basalt rocks scattered everywhere around Milton Ulladulla also sand deposits on the cliff top around the Ulladulla lighthouse. In the early 80s I was a labourer on a building site on that clifftop and couldnt workout how the sand got so high up...the footings we dug were 400mm deep and it was all sand.......now i know😳
@@billmago7991 it's truly terrifying
Very interesting. Have you looked at the area from Sunshine Coast North, Great Sandy National Park, Rainbow Beach Hervey Bay and Fraser Island?
Yes I have! It'll be mentioned in an upcoming video :) Thanks for watching!
The buckle crater event where you documented damage in Victoria and Tasmania I found fascinating as an ocean lover due to waves following the great circle paths.
There could be the possibility that this event had a refracted wave that hit some places in NSW as well, especially those places that are open to the South.
Another really well explained video - Thanks. I'm interested in the possible deposits of North of Sydney to Newcastle - mainly around Tuggerah to Swansea area if possible. Many Thanks again.
Great work, most enjoyable and scary at the same time. I have done quite a bit of research on Botany Bay, Cronulla, Kurnell and the Georges River. During the last ice age, the Georges River emptied into the Tasman Sea around 7 to 10km further out to present and exited via Wanda. Kurnell was an island after the seas rose again and the Georges was either silted up or was blocked by a Tsunami delivering sand to form the Cronulla Sandhills. The Bay, formerly a basin of creeks and grassland, was filled and the Cooks River emptied into it rather than via the heads. I wonder if you have had a look at this possibility, a Tsunami forming the land bridge to Kurnell? I grew up in Sand Souci and when I was a kid in the 60s, Dad dug a bore for water and pulled up shells from 5m down, we often talked about how this could be. Keep em coming, great work. Thank you.
@@aussiebaz5363 that's incredible shells 5 metres down
@@Kristenoyinbo 17 feet to be exact, and 1/2 a km from the current shore. Mainly Cockels. Dad hit a layer of them, so obviously a river or Bay bed at some time, but only 10,000 years ago, the Bay was dry and had been for thousands of years during the last Ice Age. So how did they get there? Poor old dad went to his grave wondering.
@@aussiebaz5363 17 feet is jaw dropping. I grew up at Caringbah and was always around sans souci. Was it more towards Rockdale way or ramsgate?
@@Kristenoyinbo South of Russell Ave, East of Napoleon St, West of Clareville Ave, North of Ida St. 15 Dickin Ave. The Sans Souci Peninsular is all rock on the Western side, hence Rocky Point Rd. As you head east, you drop down to the swamp and creeks. Look up "The geological history of Botany Bay and Pt Jackson during the ice age". It's very interesting if you know the place.
This and your last video were very interesting. I live about half way between the locations you've focused on in these two videos.
Thinking it could be worth looking at the Northern Beaches in Sydney (from Manly, to Palm beach and the Central Coast)
Looking at it in a similar lens, all of the beaches have either dunes or water outlets only at their Northern ends. Plus, the shallow waters near Ocean beach (Umina) could be a result of deposited sands. Slightly further north at Bouddi National Park there are similar scars in the cliffs to what you've shown here.
Apparently captain cook documented that there was trees along the coast uprooted and knocked down facing inland when they first arrived...
Can you look into this information and see if its creditable?
My geography teacher said this to me when i told him that i had a fascination with tsunamis.
I was taught in highschool that it was land uplift that left sea deposits on the escarpment. Damn, I've been misinformed !
Just to be clear this is a theory. Just a note he keeps saying could and possible. Also that it has not been tested yet in certain areas. Also the studies he mentions are all basically from the same 2 guys. Just to be clear he could be right and your teachers were miss informed too but pushing up is the going theory and we teach the current theory with the most evidence.
Interesting. However have you ever considered the Phoenix phenomenon. It shows our world is on timeline
Darawank is place of flathead fish in local gatang language . I’ve studied this area and there are two hysteric beaches easily seen via space imagery that I have . They are many kms from where the beach is today . And there are other beaches somewhere out in the ocean far from shore. These historic beaches are from when the oceans where much higher thousands of years ago and much lower. The temporary modern day beaches are 5 to 7 thousand year old along with the islands and lakes . I believe ocean hight may answer some of your questions . Nice videos 👍🇦🇺
Please do FNQ
Your channel is so effing interesting.
Glad you think so! I appreciate the lovely comment and thank you for watching, too!
Lets go surfin now, every body is learning how, comon and party with me!
There was a meteor strike off the coast of NZ ,NSW was hit with a mega tsunami
Is there any link to this that I can read? Or a name for it?
@@OzGeologyOfficial Mahuika that’s the name they gave it… It was five hundred years ago…
@@OzGeologyOfficial there was a geologist using mythology too find impact’s…
Ah yeah, I've heard of that one. It was proven to be false unfortunately :( Or fortunately, depending on how you look at it haha
@@OzGeologyOfficial a old friend of mine is a Geologist, she explained that the east coast of Oz has been hit with numerous Tsunami’s… the rock formations in the headlands bend inwards they should bend outwards…
The most terrifying thing about these videos by Oz is the utter ignorance by those who fund geological research projects. What’s the cost of a mega-tsunami hitting Sidney? What's the cost of doing nothing? What's the cost of a small research team (led by Oz) making core samples, taking new Lidar images over forested areas, on site evaluation etc? We as humans need to put more money into geological research. The absolute cheapest thing to do is to "Don't look up". The second cheapest thing is to learn from the past. Perhaps cosmic impact studies and cataclysmic events will be the next big thing in research funding once the global warming and CO2 craze has passed!
Is it possible to triangulate the damage to pinpoint a possible point of origin ?
I've tried but I can't find anything notable :(
Do you believe the earth flips every 12000 years? Does any evidence support this? Thanks bro. Love all the local aus/vic info you have researched so well 👍
The earth doesn't flip. The magnetic poles sometimes do, though. The last time was estimated to be about 40,000 years ago.
pretty sure it does flip every 12000 years with a minor flip every 6000. I have been studying this for a while now and been following "suspicious observers" youtube channel. I'm on the mid north coast of nsw and are looking for safe zones given the weakening magnetic field and the acceleration of the poles towards the future position around 90degs from present. The tsunamis that hit western australia show the history of the inertial waves caused by the flip whereas the tsunamis on the east coast show the backwash as the waters recede . The east coast swings to the north so the back wash hits at differing angles as the earth flips . This channel seems to indicate what I would expect to see evidence of, don't really want any more confirmation would rather be refuted.
I think you should investigate the coastline around cape Howe (NSW/Vic border), Gabo Island, the Mallacoota area and further south along the coast. Numerous expansive elevated dune deposits and other tsunami evidence that probably relate to these same events.
I came here to see if anyone had commented about exactly this area.
From Mallacoota up to Moruya and of course further north or south but this is exactly what I was going to comment.
Araluen and areas inland, many sea shells have been found.
Also , Sugarloaf mt in Moruya is an absolute anomaly.
Gulaga is an ancient volcano but Sugarloaf mountain Moruya is a conical pyramid shaped mountain.
Moreover the guilds places parliament house exactly 144kms from Montague island and when a straight line is drawn from the lighthouse on Montague/ barungaba to the glass pyramid on parliament house crosses straight over Sugarloaf, the big hole 72kms from the island and two giant granite boulders.
5 incredible sites covering a distance of 144kms in a perfectly straight line to parliament house.
Not an ancient.
Check my channel for proof of what I'm talking about.
Great work. Thank You Sir for the excellent videos and the hard work putting all this together! Best Regards and Best Wishes!
So nice of you! Thank you so much for watching and commenting, I appreciate it! :)
I worked in a sand Quarry towards the Northern end of Stockton Beach a few years ago. I've dug thousands of Tonnes of sand from the western (inland) side of the dunes. The sand is blown in with the easterly and southerly winds. The sand particles at the southern end of the beach are coarser and larger than the sand at the northern end, these are worn down as they are blown along the beach and over the dunes. The deeper/further we dug into the dunes would reveal darker and dirtier sand which was beginning to form sandstone coming out in chunks rather than granules. there is plenty of foreign material throughout the 2km section of Dunes we had access to. Also had a pit 2km further south that we dug from, this also contained many foreign objects, from broken trees, gravels of various descriptions, pumice pebbles, thin dark organic layers, presumably from grasses or small shrubs. found some old shoes from maybe the late 70's aswell in some of the darker sand maybe 10m into one dune. The family owned property has been going since the 60's there mining the sand. the dunes have been growing west/northwest for a long time, replenishing their dunes every year with more sand blown in.
Evidence for a tsunami would be deep and perhaps best found halfway along their width at the northern 1/3rd of its length, due their west/ north west growth naturally over time.
Another great video and very, very interesting...especially when you've had a chuff ;)
Glad you enjoyed it! Thanks for watching :)
Chevron island Gold Coast...🤔 Would like to have a beer with the original land developer there, deep pockets and a good sense of humour 🍻
When you say 'before present' (BP/YBP) are you using 1950 as you zero marker or 2024. Or are you using BP mistakenly as BC/BCE.
Just curious, no harm.
I appreciate your time and effort and what you put forward is interesting. What I have a problem with is the use of the term mega =tsunami when you are referring to these different facing chevrons. In my eyes, what I would call a mega tsunami would have washed up against the Great Dividing Range. Such a tsunami would have come from either a coastal shelf slip or a large meteor. The Indonesian tsunami was not a mega tsunami yet we saw what damage it did. around the Indian Ocean. I predict the next Mega tsunamis based on a coastal or mountain slip will be the Canary Islands or a coastal shelf slip off the west coast of Canada. The same could be said of a coastal slip on the eastern side of the Cooks Strait in NZ.
Around the Hunter Valley, you find large concentrations of fossils high up on mountain ridges. Around around 200 to 400 metres above sea level I seem to find massive areas of fossils. Some of the giant boulders at these elevations even look like petrified animals or entities of some form, but that's another story.
I believe that there is metor impact crater in Floraville 2280 Newcastle I’ve always thought that from a very young age the size is approximately just over 200 meters in circumference about 30-40 meters deep on top of a hill inside the crater is like a tropical rain forest all around the top of the crater is river rock very bizarre from google maps you can see the circular outline with a different colour of plant life looks more impressive when you track up and have a good look if it is and i believe so I’m staking naming rights right now Turners crater hope you look into it
Would love to learn more about Far North Queensland. As the rock formations out around Chillagoe are amazing the Lime stone is so jagged and sharp ❤❤❤❤
Maybe you may know? I was told in Cairns the overlooking hills have rocks which do not belong there, rather they are or were identified as rock belonging to the reef and thus a tsunami was theorised as being the reason and apparently this event occured 1000s of yrs ago?
Is this true?
I am very fascinated by tsunamis and their causes. I can spend entire days watching and rewatching the videos of the tsunamis that hit Japan on March 11th, 2011. The tsunamis that are large enough to be classified as megatsunamis move such enormous tides of water, and are so powerful that shadow effects from small islands just do not exist.
FAscinating insights into our country. Can we get rid of the background music track,please? It was starting to get really annoying after 8 or 9 minutes. Those of us with less than perfect hearing find it makes speech hard to separate from the background noise.
I remember as a teen finding layers of sea shells in the dirt at the top of Minnamurra falls walk, scary to think it might have been from a tsunami...thats a long way up.
Ohhh yeH , talk jargon to me baby
😂
😂 my bad. I'll try to explain the terms more in future videos.
Intresting. But. Volcanic sandstone?
Hi ozgeology could you look at the central Coast region because there are many headlands that could have signs of this tsunami
@OzGeology at what time period did these tsunamis happen ?
Edward Bryant was my professor at UoW. All rings a bell.
250 years before president is basically when the first fleet landed. If there was a tsunami then there would be stories from the many tribes in the area about it or there would have been notable damage that the english should have noticed. I will agree there are some dreamtime stories that do fit with a tsunami or flood but much older
Hope you do my area soon, always thought there was an untold story there 🤔 geologically speaking of course
That sounds intriguing! Geology has a way of revealing hidden stories about a place. Which area are you from specifically? I know you mentioned you lived in Victoria, but I’d love to explore the geological history there and maybe dive into its untold story! 🤔
Ever looked at The Gulf of Carpenteria. Have heard stories, are they true?
5:50 why is the shadow effect so sharp? That is, why was the tsunami seemingly not affected by diffraction when passing the islands?
due to wave speed. faster waves deflect over longer distances than slower waves
Great follow-up, love your work.
Hey, I live in the jervis Bay area, some of the best beaches
Taupo eruption 250CE ?
Love OzGeology 😊
I think the indigenous would know.
the world has been remade many times
It's worth mentioning that the guys from Wollongong Uni first twigged to the idea of the tsunami affected coast when they started wondering about the huge boulders on the top of cliffs at Kiama.
At 7.42 you may be able to widen the beach area affected from waves between the Broughton Islands due to diffraction?
What’s before present?
Its time to rewind...
🇦🇺🇦🇺🇦🇺👍👍👍
Great video! Very interesting stuff. Would love to know what maps program you're using, if it's not too much trouble. Keep up the great work!
Thanks! I'm using an app for the geological maps called Australian Geology Travel Maps and for the cross sections that measure the height of places I'm using an online website called Macrostrat. Enjoy :)
@@OzGeologyOfficial thanks a bunch mate!
Just get to the point 👉😉
I'm located approx 50km inland from Newcastle. It's been long rumoured that the Western side of Kurri Kurri (called Weston) was once a beach area with shells and sand in large deposits. Located approx 40km inland. Also the Hunter River has big flood plains that stretch out to Maitland and even Singleton.
Thanks another interesting vid.
Do you think the shear number of apparent tsunamis is just a statistical consequence of having such a lot of ocian around it? or do you think there are specific Biggar picture reasons for there being so many?
I am thinking about things like:
The Southern hemisphere facing the center of our milky way?
One or more meteorite shower who's path we cross periodically?
Earths magnetism directing particularly Ferus meteorites to land in the southern hemisphere?
What has given me the idear is the resent paper(?) that linked the prevailing meteorite directional origin's with a particular proto planetary disc around a newly forming star.(sorry I tried to find my ref unsuccessfully it was an Anton Petrov video) .
In short do you think there are parts of Earth get hit more often than others on average?
If you only quote 10 % you do not breach copyright responsibilities if you fully acknowledge the content creator
Loved this video and the last one. Won’t look at some of those beaches the same again 😅
Is there evidence of the tsunami(s) reaching New Zealand? I like the meteorite theory, but would also like to know how submarine shelf collapse and NZ volcanism has been ruled out.
Riveting. 👍
I'm so glad you enjoyed this! Thank you so much for watching!
Stanage Bay Queensland is evidence of a massive tsunami. On the beach, massive deposit of small rounded rocks cemented together, now falling apart. Fitzroy Island has coral and shells deposit on top of the lookout over 100 m high. Cape Grenville has massive coral boulders high up on cliff top.
Thankyou ❤
Thank you so much for watching! I'm glad you enjoyed this :)
Very bad mic pops and thumps in this one.. Hard to listen to :(
I noticed that. I'll be addressing them in future videos. Thanks for your feedback :)
Lets ignore Australia was an inland sea and go with your B.S.
😂😂
I think your angling is slightly off in some of the diagrams, should be angled slightly more southeast
Is there a program you're using for the overhead shots? The ocean looks still so It doesn't seem to be drone footage
Great information
Thankypu very much
I appreciate the work you put into your research.
Alright, where did it come from? What was the point of origin?
Absolutely Fascinating
Love your work. It would be good to chat on our show.
It’s Seal Rocks, not Seals rock.
Thanks for clarifying that! I appreciate it.
Thank you for bringing this intriguing and mostly overlooked research to us. Every politician, who plans to construct nuclear power plants, should watch this!
My pleasure! Thank you so much for watching :)
Thanks
Thanks for the donation! I appreciate it immensely :)
In other words you haven’t got a clue what happened but would like to make it appear you do )
Not sure what you mean, but thanks for watching and commenting!
What do the indigenous mobs have to say? They’ve been here 60 thousand years
Great work as usual man.
Sorry but as Australian, nothing did happen here.
Not even a tsunami.
It definitely did. As the study proves.