Volcanoes and Hot Spots

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  • Опубликовано: 14 янв 2025

Комментарии • 8

  • @jackillin
    @jackillin 12 лет назад +1

    Interesting lecture but I wish they'd cut to the closeups when he's pointing hotspots and other things out because we can't see what he's talking about.

  • @hreader
    @hreader 16 лет назад

    A well-presented lecture brilliantly illustrated (not sure why some of the audience seemed to be taking 40 winks). I saw a lava lake complete with mini 'plates' as described by the Prof (I called them 'crazy paving' as that's what it looked like) aged 10 at Surtsey, Iceland, 20th August 1964. The lake threw up periodic fountains on one side about 50-100ft high.

  • @swinde
    @swinde 6 лет назад

    When he is talking about the maps, it would be nice if the camera gave us a close view rather than the wide view which includes the lecturer.

  • @Rebeldoug
    @Rebeldoug 6 лет назад +2

    This video presentation and many more like it coming from a university setting concentrates on the presenter and not the imaged subject matter.
    The audience inside the lecture hall has the option to view the screen projection as the lecturer explains the subject matter presented.
    The viewer of the video has no such option and has to rely on whoever is controlling the camera shots.
    During this lecture and others like it the camera is focused on the lecturer mostly and not the graphic aides.
    This limits understanding of what is being discussed to the video viewer.
    The extreme example is this lecturer looking up at the graphical aide explaining it while the viewer of the video gets to see the back of the lecturer’s head.
    Someone among all these very smart people should be able to come up with a better way to present this material.

  • @notdone1975
    @notdone1975 6 лет назад

    Did you learn all this from Dutchsense?

  • @planmet
    @planmet 13 лет назад

    If these flood basalts were so extensive, where does all the extra mass come from each time these events happen? A hot water boiler has convective currents acting within it but the water does not keep increasing in volume. Convective currents are decompressional and would never create such incredible pressures - enough to buckle mountains.

  • @planmet
    @planmet 11 лет назад

    Ocean-bed crust only sub-ducts because it is being pushed by an equivalent amount of new crust extruding at the mid-ocean ridge; newly formed crust replacing older crust which is recycled back down. So there is no net extra asthenosphere material which would supply the massive floodings of igneous provinces which have happened on a regular basis over geological time.

  • @lowpricedpaint
    @lowpricedpaint 9 лет назад

    I appreciate you calling plate tectonics a theory. Can we talk about the moon's role in the overall shaping of the earth's surface, or at least ask why this is what is shown in our weather, and shown on every continent. Or is this scientific taboo? Because I can tell you that I've found my own way of finding these hot spots, and that's by matching weather patterns. Isn't the Pacific blob, a big hot spot? Because we can see it's size in the weather. As far as matching these patterns, there is at least 1 important pattern that shows in the gulf of Alaska, this same pattern often shows over the western USA, then it also shows in the Atlantic, near the Azores. It's always the same circular pattern, same size, same features. One time I had the pleasure of seeing this one over the Azores, that almost scared me. It showed a hole in almost 3d, in the weather, and it looked like I was seeing the mantle of the earth. Like the crust was missing. From my experience looking at the weather, it shows us the surface features of the earth, in it's reality. The moon relates to this, because we can see the mirror image of the lunar south pole in our weather almost daily. We can also see Mare Oriental's pattern mirrored over the western USA. I could give you a hundred more examples. But one more, the Schrodinger Basin pattern on the earth itself, in Brazil, you can see it's edge starts near Rio. You will see that it's print is bigger on the earth, than it is on the moon, but this is the case with all of the moon prints on the earth. This is what is shown, you can check yourself, please do.