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    50 million year old volcano cluster near Sydney - Forum

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    Forum moderator: arya, dethalternate  
    Forum » Main » Science, Astronomy, Nature » 50 million year old volcano cluster near Sydney (video)
    50 million year old volcano cluster near Sydney
    dethalternateDate: Tuesday, 21-July-2015, 10:53 AM | Message # 1
    -- dragon lord--
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    Australia’s new ocean-going research vessel Investigator has discovered extinct volcanoes likely to be 50 million years old, about 250 km off the coast of Sydney in 4,900 m of water. While scientists were searching for the nursery grounds for larval lobsters, the ship was also routinely mapping the seafloor when the volcanoes were discovered. They haven’t been found before now, because the sonar on the previous Marine National Facility (MNF) research vessel, Southern Surveyor, could only map the sea floor to 3,000 m, which left half of Australia’s ocean territory out of reach. The centre of the volcanic cluster is 33 31 S, 153 52 E, which is 248 km from Sydney Heads. The cluster is 20 km long and six km wide and the seafloor 4890 metres deep, with the highest point in the cluster rising up to 3998 metres.


     
    Forum » Main » Science, Astronomy, Nature » 50 million year old volcano cluster near Sydney (video)
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