Subduction Zones and Arcs by Robert Stern

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  • Опубликовано: 29 ноя 2024

Комментарии • 18

  • @zxwmabcdef5439
    @zxwmabcdef5439 5 лет назад +2

    If you look at the trans Mexican volcanic belt I think you can see where the slab changes to 70 degrees and the mantle flows. The distance between the mountains changes just west of mexico city. There is also a bow up and down in them.

  • @hosseinazizi8676
    @hosseinazizi8676 3 года назад

    Hi Bob,
    Thanks. Interesting talk

  • @MrJuliane96
    @MrJuliane96 7 лет назад

    Dehydration dynamics in subduction zones contribute to the understanding of seismic regimes and I think it's amazing to link that to plate tectonics. Also, as Mr Stern stated, metamorphic petrology can support these investigations, which is great for petrology enthusiastic like me. Great lecture.

  • @annetteku1
    @annetteku1 Год назад

    Link to the previous lecture, he talks about in the beginning?

  • @Noahide
    @Noahide 6 лет назад +1

    Been looking at things. Subduction zones are were the 'Land' meets 'The Great Deep'. The Great Deep is the Seabed. The Great Deep covers the whole world. Waters were separated at the beginning which covered the great deep, and land was made by God in various places on top of the Great Deep. Water still covered the Great Deep and now land also was upon the great deep. Subduction zones are were the great deep meet the land. That seabed covers the whole world I would say, a foundation for the seas and the land.

    • @Noahide
      @Noahide 6 лет назад

      The fractures in the great deep - marked by the fault lines of the tectonic plates - are were God broke up the foundations of the great deep to provide the water for the flood.

    • @Noahide
      @Noahide 6 лет назад

      ruclips.net/video/tWs6Y5NOgLM/видео.html

    • @Noahide
      @Noahide 6 лет назад

      When the great deep was split at the time of the flood, this made it expand. The expansion of the great deep creates a slightly larger globe. The land on top of the great deep shifts between opposing tectonic plates as the world expanded giving the results of what they call subduction. There are still settling processes which continue to take place post flood with the ongoing tension between the tectonic plates at the fault lines. This tension creates earthquakes and volcanoes. With volcanic action a degree of the rock cycle occurs. The rock cycle does not occur to the extent of the whole world being recycled. That has not happened yet.

    • @Noahide
      @Noahide 6 лет назад

      The basalt seabed of the great deep likely extends worldwide underneath the granite at the foundation of the land.

  • @MistressGlowWorm
    @MistressGlowWorm 10 лет назад

    You said Spinel :)

  • @RichardKCollins
    @RichardKCollins Год назад

    At 16:40 isn't the lower density surface slab going to float upwards? The deeper it gets the stronger the bending force? Will see if I can answer that myself. In a billion years, at 5 cm/year a slab would reach down to 2800 km many times. Your diagram assumes it breaks.
    You talked about collaboration, but now ALL the geophysics and related sensor networks are combining for a variety of reasons. You cannot solve climate change without including all the data from all the countries, and all the disciplines.
    You poo-pooed the visualizations, but your artists are pretty good. I wonder what it really looks like.
    Nice talk.
    Richard Collins, The Internet Foundation

  • @geoffgeoff143
    @geoffgeoff143 4 года назад +1

    Good lecture. Poor editing. We don't need to see the talkers face most of the time. Keep it on the slides

  • @Noahide
    @Noahide 6 лет назад +1

    I am a creationist. I would profer that subduction and the rock cycle processes are happening far more quickly than the millions of years hypothesis.

    • @Noahide
      @Noahide 6 лет назад +1

      The moving of 50 metres as you quoted demonstrates my point.

    • @zxwmabcdef5439
      @zxwmabcdef5439 5 лет назад +3

      Rocks don't care if you prefer anything.

    • @elizabethwatkinsfrazer4684
      @elizabethwatkinsfrazer4684 5 лет назад

      @@zxwmabcdef5439 LOL

    • @zxwmabcdef5439
      @zxwmabcdef5439 5 лет назад

      They don't. We have a salesman who thinks the strength of the electroweak force changes if he makes a sale. I took him out in the shop and told him some stuff. @@elizabethwatkinsfrazer4684