The Comet Impact & Mega Tsunami That Drowned Australia - Full Documentary

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5000 years ago, a comet broke apart into three pieces upon entry into Earth. The largest piece, smashed into the indian ocean, with the other two smaller pieces landing in different areas of the Pacific Ocean. The Indian Ocean impact, was incredibly disastrous. It landed in a very deep part of the ocean, and, as a result, it released a truly monstrous mega tsunami during impact. This tsunami was so disastrous, that 600 foot high mountains were built in Madagascar in the blink of an eye, when massive amount of churned up sediment that was carried by it, got deposited in truly vast quantities here, and everywhere else that this tsunami stuck, too, including very, very far places, such as Tasmania.

When this Mega tsunami struck, it did so with such force, that it severely eroded entire cliff faces, and left deep gashing scars in the land, which document the direction of the flow. Along with this, it also deposited something known as seismic chevrons. Which are arrow shaped hills of deposition, that were left after the wave had slammed into Australia. When it began to recede, all the material it carried was just dropped where it landed, and the water move out, but the sediment remained. Because of this, massive layers of sand were deposited, and even though 5000 years have passed, you can still see many places where this tsunami impacted.

In this full length documentary, the 3 episodes that cover this topic were combined and as a result we start in Perth, before moving onto Tasmania, Victoria, then we head west to South Australia, before ending our journey in the far northern tip of Western Australia. We go through bit by bit, documenting the evidence of this event, and as we hit South Australia, the evidence really begins to ramp up. I teach you how to identify chevrons, what they are and how they form, and I also cover the difference between chevrons and aeolian processes, including what the intertwining of these two looks like.

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Link to Part 1 of this series:
https://www.youtube.com/watch?v=V_H6W2R88Z0

Link to Part 2 of this series:
https://www.youtube.com/watch?v=syCWb_ySJRo

Link to Part 3 of this series:
https://www.youtube.com/watch?v=DBBCKghodVI

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Link to studies:
https://academiccommons.columbia.edu/doi/10.7916/D89P31F3
https://ui.adsabs.harvard.edu/abs/2010avh..confE..13A/abstract

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OzGeographics, formally known as Geographics, is an Australian based Youtube channel that releases high quality documentaries in an easy to digest format. We primarily release videos that cover topics in the realm of Earth Sciences or natural disasters, but we also release the odd video here or there that delves into other sciences, or other topics altogether depending on how compelling we find the topic at hand.

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