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The Lost Continent of Lemuria (- threads, 12 posts)
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    Submerged Continent Found
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    Author: * Shauri Amenhotep - 1 Post on this thread out of 14 Posts sitewide.
    Date: May 25, 2005 - 22:49

    This discovery was actually made in '99 but I had not seen anything written about it here, so I am including the text from on of the articles I have read about it.

    From several other articles, I understand it was found by a drilling platform, which was bringing up what was left of forests and ferns submerged under the rock. Since many occultist place Lemuria (Mu) in the Indian Ocean, and describe it destruction as Volcanic... this is an very interesting discovery, lending many possibilities.

    Enjoy
    Shauri

    AUSTIN, Texas—Researchers from The University of Texas at Austin's Institute for Geophysics (UTIG) and the Massachusetts Institute of Technology (MIT) recently led a team of 28 scientists representing eight countries on an expedition on which they discovered a large underwater plateau in the Indian Ocean that once was a small continent above sea level.

    The landmass is located in the remote and turbulent waters of the southern Indian Ocean straddling the Antarctic Polar Front, according to Dr. Mike Coffin of UTIG and Fred Frey of MIT. The researchers found evidence that the Kerguelen plateau they are studying had existed as a large landmass above sea level at three different times during an 80-million year period, before finally becoming submerged about 20 million years ago.

    Coffin and Frey are part of the Ocean Drilling Program (ODP) that mounted an expedition to study the Kerguelen plateau and its now separate feature, Broken Ridge. Their findings are soon to be published in Science magazine.

    The mostly submarine Kerguelen plateau, which is one-third the size of the contiguous United States, is beneath an area of challenging winds and seas of the Kerguelen "Triangle," where two Vendée Globe round-the-world racing yachts capsized in 1997. Scientists refer to the landmass as a "micro-continent" because of its smaller size in comparison with Earth's better-known continents.

    The Kerguelen plateau is one example of a unique type of Earth feature, a large igneous province (LIP). One of the least understood features in the ocean basins, LIPs are believed to be the surface manifestations of massive pulses of volcanism that originated deep within Earth's mantle in association with narrow upwelling systems, known as mantle plumes or hotspots. The episodic nature of LIP eruptions documented in the geologic record, especially between 150 and 50 million years ago, is evidence that a more dynamic, unpredictable mode of mantle circulation, very different from that driving present-day plate motions, existed during Earth's past. LIPs preserve a record of mantle dynamics and also may have affected the Earth's environment in the past by potentially altering ocean circulation, climate conditions and sea level.

    The Ocean Drilling Program (ODP), utilizing the drilling ship JOIDES Resolution, operated by Texas A&M University, set out to study the plateau's eruption history by analyzing samples of sediment and lava collected from deep beneath the sea floor. Since its formation, the plateau has subsided to great water depths (1 to 2.5 km). Prior to Leg 183, Coffin and other UTIG researchers participated in three successful geophysical surveys on the Kerguelen Plateau undertaken by Australia (1997) and France (1998). The new site survey data from these cruises set the stage for ODP Leg 183 to the site in the southern Indian Ocean.

    The earliest known volcanism associated with the Kerguelen hot spot began about 130 million years ago when Africa, Antarctica, Australia, India and Madagascar were just beginning to break apart, thus creating the Indian Ocean. Changing tectonic plate motions over the ensuing eons left a continuous record of the hot spot's eruptive history, with peak volcanic events creating much of the Kerguelen Plateau and Broken Ridge. Leg 183 recovered volcanic rocks and interbedded sediments, which revealed two significant pulses of volcanism during Cretaceous time at about 110 and 85-95 million years. Subsequent plate motions over the Kerguelen plume resulted in the formation of the Ninetyeast Ridge (82-38 million years) and the northern Kerguelen Plateau about 35 million years ago. The Kerguelen hot spot continues to erupt today at Heard and McDonald islands, albeit at rates much lower than those of more than 80 million years ago.

    Surprising evidence recovered on Leg 183 revealed that the Kerguelen plateau had existed as a large landmass above sea level at three different times during an 80-million year period, before finally become submerged about 20 million years ago. The evidence consists of dark brown sediment overlying subaerially erupted lava flows, charcoal and wood fragments in sediments overlying igneous rocks, and conglomerates, which formed from sediments deposited in river beds, interlayered with lava flows. The final stage of volcanism forming the Kerguelen LIP produced magmas rich with gases such as carbon dioxide, oxides of sulfur and water vapor, which may have caused global environmental change.


    http://www.utexas.edu/opa/news/99newsreleases/nr_199905/nr_continent990528.html


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