Saturday, November 21, 2015

The World’s Largest Volcano: Tami Massif

Land Masses

Tami Massif rises more than four kilometers from the seafloor. In this 3D image you will note various peaks that have formed about 145 million years ago during the Late Jurassic to Early Cretaceous period; it has a surface area about the size of New Mexico (i.e., 260,000 sq. km or 100,000 sq mi ), and a height of 4,460 metres (14,620 feet). Alexandra Witze for Scientific American writes: “New magnetic data suggest that the gigantic underwater mountain known as Tamu Massif, 1,600 kilometers east of Japan, is a kind of volcanic hybrid—a mash-up of long chains of volcanoes and one enormous eruption. ‘We’re looking at something that’s in between a mid-ocean ridge and a simple conical volcano,’ says William Sager, a marine geophysicist at the University of Houston. Mid-ocean ridges are where fresh lava wells up from deep inside Earth to create newborn ocean crust; they run for thousands of kilometers along the centers of most ocean basins.”
Image Credit: John Greene; Schmidt Ocean Institute
Source: Scientific American