| inbluevt | Date: Monday, 2013/09/09, 12:18 PM | Message # 1 | DMCA |
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Scientists say that they have discovered the single largest volcano in the world, a dead colossus deep beneath the Pacific waves.
A team writing in the journal Nature Geoscience says the 310,000 sq km (119,000 sq mi) Tamu Massif is comparable in size to Mars' vast Olympus Mons volcano - the largest in the Solar System.
The structure topples the previous largest on Earth, Mauna Loa in Hawaii.
The massif lies some 2km below the sea. It is located on an underwater plateau known as the Shatsky Rise, about 1,600km east of Japan. It was formed about 145 million years ago when massive lava flows erupted from the centre of the volcano to form a broad, shield-like feature. The researchers doubted the submerged volcano's peak ever rose above sea level during its lifetime and say it is unlikely to erupt again.
"The bottom line is that we think that Tamu Massif was built in a short (geologically speaking) time of one to several million years and it has been extinct since," co-author William Sager, from the University of Houston, US, told the AFP news agency. "One interesting angle is that there were lots of oceanic plateaus (that) erupted during the Cretaceous Period (145-65 million
years ago) but we don't see them since. Scientists would like to know why."
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The Tamu massif is comparable in size to Olympus Mons on Mars.
Message edited by inbluevt - Monday, 2013/09/09, 12:24 PM |
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