The Tamu Massive erupted about 145 million years ago. Is it just a coincidence that a magnetic reversal occurred at about the same time?
And climatic cooling? I think not.
The end-Jurassic extinction took place about 144 million years ago. It was a period of rapid seafloor spreading, black shale deposition, and climatic cooling. It was also a time of major mountain building and volcanic activity. Two million cubic kilometers of basalt spewed from the Parana flows to cover parts of Paraguay, Uragua, Brazil and Northern Argentina. Another 500,000 cubic kilometers of basalt poured from the Namibian basalts in Africa. (Not by Fire but by Ice, p. 129)
Researchers discovered the largest volcano on earth a thousand miles off the coast of Japan. Tamu Massif rivals some of the biggest volcanoes found in the solar system. Volcanology researcher Kayla Iacovino discusses what this giant can tell us about the inside of our planet.
Ira Flatow, host.
Thanks to Steven Woodcock for this link
Underwater volcano the size of Arizona
Magnetic Reversal Chart