Is the ocean broken?

Discussion in 'All Things Boats & Boating' started by daiquiri, Oct 24, 2013.

  1. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    I'd never heard of the Richát Structure. Very interesting.
    I think the Fiji islands are closer to being opposite the Richát Structure than the Mariana Trench.

    Richát Structure 21.1269° N, 11.4016° W
    exactly opposite 21.1269° S, 168.5984° E
    Fiji Islands 17.7134° S, 178.0650° E
    Mariana Trench 11.3493° N, 142.1996° E

    Be that as it may, the Wikipedia article says that the most recent elements of the Richát Structure formed about 100 million years ago, and was formed by lava flows, sedimentary deposits, and hydrothermally altered rocks, which are aged 450 million years ago (Ordovician) to 2.5 billion years ago (Proterozoic).

    The sedimentary rock exposed in this dome ranges in age from Late Proterozoic within the center of the dome to Ordovician sandstone around its edges.

    The carbonatite rocks have been dated as having cooled between 94 and 104 million years ago. A kimberlitic plug and several sills have been found within the northern part of the Richat Structure. The kimberlite plug has been dated to around 99 million years old

    On the other hand, the Mariana Trench is formed by the subduction of the Pacific Plate underneath the Mariana Plate, and is an active, ongoing process. Furthermore, there are many active, subduction zones around the world.

    [​IMG]
    Subduction - Wikipedia https://en.wikipedia.org/wiki/Subduction
    Mariana Trench - Wikipedia https://en.wikipedia.org/wiki/Mariana_Trench
    It's still not clear to me what mechanism you think might be have caused the Earth's core to swing back and forth? And would it make sense that that event caused something to occur both 100 million+ years ago as well as ongoing today?
     
  2. Yobarnacle
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    Yobarnacle Senior Member holding true course

    Everything has happened before. Mark Twain said history doesn't repeat itself but it rhymes. In other words, events may vary slightly but with similar results..
     
  3. Will Gilmore
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    Will Gilmore Senior Member

    I'm not saying that the event that happened 100 million+ years ago is still going on today, although it could be argued that such echos last forever. What I'm saying is that trauma, such as a giant asteroid hitting earth would impact the core, through the crust, causing it to swing (carry its energy) to the opposite side and that could cause a laccolithic dome. Such an event would create a harmonic that could repeat the geological phenomenon over thousands, if not millions of years. My point is to use such a thing as an example of cyclic subterranean events may be happening, not as THE thing that IS happening.

    Looking at the satellite images of that area, you get a distinct impression of an area that was flooded with all the water running out, carrying with it the sand and sediment to the Atlantic Ocean. This means, at some point well within the million+ years, that area was a much much deeper depression and has risen up, dumping its surface contents out until only bedrock is exposed.

    There's a whole and compelling theory that the legendary city of Atlantis was located there, with its concentric rings of water and wall, as described by Plato. It seems to match both the physical description and the location described. The interesting thing about that, in this discussion, is the description of the city's destruction. It was flooded.

    That would indicate the area sank, and now, we see that area is well above sealevel and quite dry. I'm not arguing for the accuracy of claims to the location for Atlantis, just using it as an example of how the Earth's surface can rise and fall and rise again.

    Every event rings.

    -Will
     
  4. Yobarnacle
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    Yobarnacle Senior Member holding true course

    Plato said the "island" of Atlantis was larger than Asia and Africa combined. The parts they knew about of Asia and Africa. The island of Atlantis was continent size. South America is the likely candidate. Only the city of Atlanyis sank, not the entire island. Cities can share names with larger areas. NewYork, NY. for instance. Or Mexico City, Mexico.

    Cocaine and nicotine have been discovered in the hair samples of Eygyptian mummies. Sweetpotatoes originated in America and are in Africa and the pacific islands for a very long time. Peanuts came from America, to China many millennia past.

    Columbus discovered nothing. He had a stolen Portuguese chart showing the Americas.

    Maps dating back to Alexander the Great 356 to 323 BC were copied.

    Ancient Map Shows Antarctica Coastline Without Ice https://historydaily.org/ancient-map-shows-antarctica-coastline-without-ice

    Columbus myth. Real name Salvador Fernandez Zarco, a Portuguese born on the island of Madeira.

    [PDF] The Portuguese Christopher Columbus!! Columbus the son of a wool-comber!! - Free Download PDF https://silo.tips/download/the-portuguese-christopher-columbus-columbus-the-son-of-a-wool-comber

    It isn't what people know is a problem. The problem is what they know that isn't so!

    How about Magellan?
    "the expedition reached the Philippines. To the crew’s surprise, Enrique, an enslaved man Magellan had purchased before the journey, could understand and speak the indigenous people’s language. It turned out he was likely raised there before his enslavement—making him, not Magellan, the first person to circumnavigate the globe."
     
    Last edited: Jul 12, 2021
  5. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    More than a billion seashore animals may have cooked to death in B.C. heat wave, says UBC researcher
    • The recent record-breaking heat wave in B.C. may have killed more than one billion seashore animals living along the Salish Sea coastline
    • Using infrared cameras temperatures above 50 C were recorded on rocky shoreline habitats
    • Intertidal animals such as mussels, which live where land and sea meet, can endure temperatures in the high 30s for short periods of time
    • The scorching heat, combined with low tides in the middle of the afternoon, created a dangerous combination for more than six hours at a time
    • The mussel bed will likely recover in a year or two, but heat waves will happen more frequently and with greater severity due to climate change
     
  6. Yobarnacle
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    Yobarnacle Senior Member holding true course

    Simon says, "May I?"
     
  7. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Looks like you have that problem too. ;)
    Magellan NEVER circumnavigated the globe. He was killed in the Philippines.

    Ferdinand Magellan
    Granted with special powers and privileges by the King, he headed the Armada from Sanlucar de Barrameda south through the Atlantic Ocean to the eastern coast of South America down to the Patagonia. Despite a series of storms and mutinies, they made it through the Strait of Magellan into the Mar del Sur which he renamed the "Peaceful Sea" (the modern Pacific Ocean).[11] The expedition reached Guam and shortly after, the Philippine islands, where Magellan was killed during the Battle of Mactan in April 1521. Under the command of captain Juan Sebastian Elcano, the expedition later reached the Spice Islands and, to navigate back to Spain and avoid seizure by the Portuguese, the two remaining ships split, one attempting unsuccessfully to reach New Spain sailing eastwards across the Pacific while the other, commanded by Elcano, sailed westwards via the Indian Ocean and up the Atlantic coast of Africa to finally arrive at the expedition's port of departure, completing the first circuit of the globe.​
     
  8. Yobarnacle
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    Yobarnacle Senior Member holding true course

    I knew he died in Philippines. It's the school history books that teach the lie.
     
  9. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Show me one text book that says Magellan himself circumnavigated the globe.
     
  10. hoytedow
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    hoytedow Carbon Based Life Form

    The North Magnetic Pole keeps moving because the core keeps moving. The rift and the trench aren't exactly opposite but neither are the magnetic poles. Why? Because the magnet is the core itself and it just won't stay put.
     
  11. Will Gilmore
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    Will Gilmore Senior Member

    From Plato's Timeas,
    I take this to mean it was very close, but beyond the Straights of Gibraltar.
    The second bold type part of the quote indicates knowledge of a distant continent that defines the edges of the Atlantic Ocean, but is not Atlantis.

    To give a time frame here, Plato described the events of Atlantis attacking Athens to have happened 9000 years before his writing of it. That would put the existence of Atlantis at approximately 12,000 years ago.

    Even if we were to believe the Federation of Atlantis existed as Plato described it; highly organized, technologically advanced (as compared to 5th century BC Greece), rulers of the sea with their great naval power. Are we also to believe that Athens, 9000 years earlier, was able to fend off their attack?
    The most compelling evidence to the actual existence of Atlantis is the discovery that Troy was real. Since the story of Troy came from Homer, not Plato, that's not really much evidence either.

    Still, the Richát Structure does exist and it matches certain details of the city of Atlantis, which if true, would indicate that the surrounding portion of the African continent was actually below sea level around 12,000 years ago. Further more, if the story about Atlantis sinking is true, that whole area sank even farther below the ocean, nearly 900' according to the NASA data about the height of the central dome, before lifting back out and up above sea level.

    I wonder if there is any data about geothermal activity beneath the Richát Structure and if it might correlate with the El Niño and La Niña phenomenon on the opposite side of the globe.

    -Will
     
  12. Yobarnacle
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    Yobarnacle Senior Member holding true course

    ".starting from a distant point in the Atlantic ocean, was insolently advancing to attack the whole of Europe"

    starting from a distant point in the Atlantic doesn't indicate near Gibraltar

    in front of the mouth which you Greeks call, as you say, 'the pillars of Heracles indicates beyond Gibraltar, not inside the Mediterranean but doesn't indicate proximity, just direction.

    Interesting to speculate about Atlantis.
     
  13. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Climate Change Is Making Ocean Waves More Powerful
    • Global warming is making waves more powerful, particularly in the Southern Hemisphere
    • Warmer sea surface temperatures bring about stronger winds, which alter global ocean wave conditions
    • The coasts of South Australia and Western Australia, Pacific and Caribbean Islands, East Indonesia and Japan, and South Africa are already experiencing more powerful waves
    • Mangroves and salt marshes are particularly vulnerable to increases in wave energy when combined with sea level rise
    • It appears changes to wave conditions towards the equator are more driven by ocean warming from human-caused climate change, whereas changes to waves towards the poles remain more impacted by natural climate variability
    • An increase in wave height may cause increased erosion, but if the waves become longer they may transport sand from deeper water to help the coast keep pace with sea level rise
    The research was published in Geophysical Research Letters
     
  14. Yobarnacle
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    Yobarnacle Senior Member holding true course

    Speculation, ignorance, and propaganda from the AGW BS crowd.. Waves are wind driven. Cold air is heavier and builds a bigger sea for a given wind velocity than warm air. A fifteen knot summer breeze makes two to three foot swell, but fifteen knot fridgid winter wind makes five to eight feet. Also depends on fetch and duration, but cold air always builds much bigger seas and swells. So much for human caused warming causing big seas. :p. Raspberries! I can document I have spent more than ten thousand days at sea.. Can't fool me.
     
    Last edited: Jul 13, 2021

  15. ImaginaryNumber
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    ImaginaryNumber Imaginary Member

    Oh wise master, please explain to us why hurricanes are usually spawned in the hot tropics and seldom in the cold arctic.
     
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