Australia: A Land Filled with Super Volcanoes

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Publicado 2023-04-05
#supervolcano #australian #australia #volcano #volcanic #volcaniceruptions #volcanoeruption #geoscience #earthscience #caldera #cerberean #caldera #victoria #devonianera #granite #ancient #volcanoes #geological #geology #earthsciences #geoscience #geosciences #plinian #faultline #faults #tectonic #tectonicplates

The state of Victoria, in the South Eastern most region of continental Australia, was home to a massive number of ultra-plinian volcanoes and supervolcanoes during the Devonian era. The state is divided in two, with the largest volcanic activity occurring during the early devonian at a site in Victoria where there was a rifting that was taking place. This rifting allowed magma from deep within the earth to rise up, and in doing so, this extremely hot basaltic magma melted the extremely volcanic bedrock basement of Victoria, turning the chemistry of the magma from a low silica mafic one, to an extremely viscous high silica blend, which led to the formation of over 2 dozen massive volcanic calderas in this region. We will cover this in part 2. In this episode, we are covering the volcanic activity that occurred in the Late Devonian, which was related to a nearby orogeny that was induced by a tectonic collision and subduction that was happening near to here, as more and more of Victoria was continuing to be risen from the deep sea, creating a land more recognizable to that one that exists today, with it being built one step at a time, bit by bit like a puzzle.

These late Devonian eruptions created some of the largest calderas and most powerful eruptions ever seen in Victoria. The most well known and well studied of these eruptions, is the VEI 8 supereruption that occurred in the Cerberean Caldera. This massive eruption is thought to be responsible for, or at the very least, related to the Devonian extinction that occurred due to just how powerful it was, and how immense the climactic effects would've been, especially with the Volcanic winter that without a doubt would've followed this eruption. Along with this, was the creation of some of the most well known features in Victoria in present day, such as Mount Dandenong, also known as Dandenong Ranges, and Mount Macedon. Both of these were extremely large and violent caldera forming volcanic eruptions. The land surrounding these impressive structures have slowly wittled down and eroded around the more erosion resistant volcanic rocks of these calderas, leaving them looking like mountains today, rather then the deep depressions within the earth that they once would've existed as. Along with these, we will also cover the Acheron caldera, and two others that exist north of the Cerberean one, that could've been just as powerful, if not more then what occurred at the Cerberean caldera.

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OzGeology is an Australian-based YouTube channel that specializes in creating high-quality documentaries on Earth sciences and natural disasters. The content is designed to be easy to digest and covers a wide range of topics, not only focusing on geology but occasionally exploring other scientific areas as well.

How New Zealand Causes Earthquakes in Australia:
   • How New Zealand Triggers Earthquakes ...  

Here are the links to the individual episodes.

Australian Super Volcanoes: Episode 1 - Subduction Related
   • Australia's Super Volcanoes & Giant C...  

Australian Super Volcanoes: Episode 2 - The Rift Zone
   • Australia's Super Volcanoes & The Zon...  

Australian Super Volcanoes: Episode 3 - The Anomaly in The Western Volcanic Field:
   • Western Victoria's Ancient Super Volc...  

Todos los comentarios (21)
  • Hey guys! We decided to combine the 3 episodes that we made last year which cover Victoria's Devonian super eruptions. I was originally going to rerecord the audio, because I had a horrible mic back then. But I couldn't find the scripts for these, so we tried to fix it as best as we could. A lot of effort went into the creation of each episode, and they contain a vast amount of valuable information, so I figured it was best to combine them all into a single episode. Hope you all enjoy!
  • How fascinating. I lived in Victoria for a number years and was always intrigued by the various and numerous differences in it's geography. Rain Forest to desert, as well as Plains to the Dandenong Ranges. I would often spend many a week end driving all over. The Grampian are fascinating and a contrast to the Highlands. More please.
  • @tasty8186
    I've spent a lot of time 4x4ing, camping and exploring around Mansfield and Mt Buller. So cool to hear that a lot of those wild ridges I tackled were probably volcanic formations
  • I absolutely love this channel, I've lived all over Victoria in my 43 years on this planet and it rocks to learn so much about the places that are so dear to my heart and imprinted in my memories. Thank you so much for all of the brilliant work you do, i really hope someone can back up your claims and get this stuff taught in schools all over Australia. My partner and i were just talking about how much more exciting school would have been here in Victoria if we had this stuff on the syllabus! Is there a way to offer your work to Vic schools?? 🤔 As a kid i was lucky enough to dig up some smoky quartz in my mates uncles back paddock, now I know why it was there! Thanks again for all you do. 👍🏼👍🏼👍🏼👍🏼👍🏼
  • I like the way this guy encourages us to encourage him 😅 like he needs any encouragement 😜 his enthusiasm is infectious 😁 good stuff 👍🙏
  • It would be fantastic if you film your treks to discover Australia’s Volcanic activities. It would be like a show and tell.
  • Thank you for covering this specific area! I grew up an hour east of Mount Gambier and have always been fascinated with the various volcano's dotting the entire South West of the state and across into S.A
  • @pauldegraaf2075
    Absolutely love learning this information. There is a lot of ground movement in the strezlecki range and also a number of seismic faults causing quakes
  • @williamburns9731
    Fantastic, i was born in Benalla and travelled and worked in a lot of areas in the first part of video. Keep up the great work.
  • @herenowjal
    THANK YOU so much for this (and ALL) of your published video(s). This information is exceedingly fascinating. Additional videos on this topic is hoped for (and very much appreciated).
  • @Rusty_Gold85
    I went through Koroit to Warrnambool last year and could tell there was a quite a bit of volcanic lava flow in the area. South Australias rocks seem to be millions of years old and sedate in comparison
  • @herby375
    Wow, that was Amazing, Thanks!
  • @earthexpanded
    Thanks bro I was just learning about Skull Rock and this helps clear up some info on what was going on then. Excellent work as always!
  • @xyphenius9942
    Will you discuss the lava flow around metropolitan Melbourne and how it influenced the topography at some point? :)
  • @damienme7446
    Many years ago while living in Victoria Au. we used to picnic in a crater the crater was entered on the left and inner area has a BBQ area & walking trails.
  • @bigjay875
    The information you presented is utterly astounding and nearly incomprehensible! So much raw power!!!
  • @BarelyMakinIt
    Enjoying this channel. I lived in Geelong for several years before having to go back to the Americas and I only JUST joined up with a mineral club a little while before I left so I barely had any time to get into it. We visited a few sites for specimens (couple sites for fossil sea life including a sheep paddock with steep hills and so many rabbit bones you almost couldn't step without crushing some, and a site with lava bombs full of tiny peridot crystals) and sightseeing (organ pipes park, etc) which was pretty cool and got me wondering about other random things in the area but never had a chance to investigate like the random scoria just west of Geelong near Colac, or the You Yangs farther north. Also went west to the Grampians. I miss it sometimes, it was really beautiful.
  • @susangruber8693
    Very interesting info 🤔 I live close to Mt Donna Buang and give thanks to the volcanoes that created some of the most stunning scenery in the world 🥰🇦🇺
  • @TheXiphaus
    You do an amazing job with these videos mate. I know because I'm a geologist, and I have struggled immensly finding decent information on volcanics during this time. It was also Mt Macedon that started my journey of discovery. Thank and and keep up the good work sir!