Saturday, July 29, 2023

Forces Of Magnitude

 There are several kinds of volcanoes. Mount St. Helen's is characteristic of a lava dome.


Etna is typical of a composite cone, or stratovolcano.


Flood basalts are the result of a massive eruption, in which basalt lava pours over a vast amount of land or ocean floor. The most recent one is in the Columbia River region of the western United States- some sixteen million years ago.


Shield volcanoes are characteristic of Hawaii.


Cinder cones are very common types of volcanoes characterized by a single vent.


Volcanoes wreck havoc- some examples are here.


The same applies to earthquakes, which are capable of killing more people.


Display panels look at what makes earthquakes happen- both major and minor fault lines.

50 comments:

  1. Earthquakes are scary and life threatening.

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    1. We had one here some years ago. On the scale of things it was minor.

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  2. Reminds me of teaching the grade 11 geography course.

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  3. I have seen the aftermath of an earthquake and it is quite terrifying.

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  4. Nice sequel about the powers that our earth harbors.

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  5. Earthquakes are scary, I have felt two right here in Maryland. Take care, have a happy weekend.

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  6. ...I went to Mount Saint Helens a number of year after its eruption, it was quite a sight to see.

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  7. Earthquakes used to freak me out when I used to travel in Japan.

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  8. Volcanoes are both mesmerising and lethal. I learnt a lot from this post, thank you.

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  9. Ohhh...
    I'm so glad I live in an area far from volcanoes and possible earthquakes.
    A warm greeting to you and
    I wish you a happy weekend.

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    1. We get the odd quake but the magnitude isn't like what you'd get near a major fault line.

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  10. We were awakened by what we thought was an earthquake in Newfoundland one night. Turns out, it was a rock burst from the abandoned mine which was being flooded under the town. Scary enough though. The real thing must be terrorizing!

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  11. I hope you survived yesterday's storm!

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  12. They have some excellent videos of volcanoes and earthquakes.

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  13. We had earthquakes in Oregon in the early 90s and one in Alaska around 2000 both were scary.

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  14. Volcanos are fascinating....dangerous but fascinating.

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  15. Great volcanos exhibit ~

    Wishing you good health, laughter and love in your days,
    A ShutterBug Explores,
    aka (A Creative Harbor)

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  16. Great exhibition photos of this scary event. I remember it like it was yesterday. We were living in California over a thousand miles south, and I couldn't understand why the sky was so yellow with flecks floating down from the sky.
    At first I thought it was a fire nearby but when I turned on the local news, they were talking about the volcano and the ash falling. It was surreal and sadly quite horrific.

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  17. Es un gran espectáculo. lo malo son los daños que ocasionan.
    Un abrazo

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  18. I've not experienced Volcanos or Earthquakes, but it must be quite scary ...

    All the best Jan

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  19. Stratovolcanoes, scary as they are lahar makers.

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  20. So important to learn about these kinds of things even if it doesn't at this time effect where I'm living, it's good to know as anything can happen.

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  21. I've had a fascination with volcanoes for many years.

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