Landmass is Gardner Pinnacles, apparently now the largest volcano on Earth

The biggest volcano on Earth may lie hidden in the sea 590 miles (952 kilometers) northwest of Honolulu, Hawaii. Two little pinnacles of volcanic rock, called Gardner Pinnacles and standing about 170 feet (52 meters) above sea level, are the only visible part of a mountain of volcanic origin rising more than 15,000 feet above the seafloor.

Mauna Loa on Hawaii's Big Island has long been designated the world's largest volcano, rising more than 30,000 feet (9,170 meters) above the seafloor of the Pacific Ocean and encompassing more than 19,200 cubic-miles (80,000 cubic-kilometers) in volume. New research published in the journal Earth and Planetary Science Letters suggests that the Gardner Pinnacles are the summit of a volcanic edifice encompassing approximately 36,000 cubic-miles (150,000 cubic-kilometers) - a volume more than twice that of Mauna Loa.

Only a fraction of that volume — about 30% — is visible above the seafloor. The mass of the lava emitted over the last 14 million years is heavy enough to bend the oceanic crust beneath the mountain by hundred of miles, hiding 70% of the volcanic edifice volume from direct view. However, using the increased gravity by such a concentration of mass, the researchers were able to map and calculate the volcanic edifice's complete volume.

The volcanic edifice, part of a chain of undersea mountains stretching from the Hawaiian Islands to the eastern edge of Russia, was named Pūhāhonu by the researchers, meaning "turtle surfacing for air", from the Hawaiian pūhā "to breathe at the surface" and honu "turtle."

David Bressan

David Bressan

I'm a freelance geologist working mostly in the Eastern Alps. I graduated in 2007 with a project studying how permafrost, that´s frozen soil, is reacting to the more…

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https://www.forbes.com/sites/davidbressan/2020/05/31/phhonu-earths-largest-volcano-discovered-in-the-pacific-ocean/#16642f70276f

>>10804648 (me)

Gardner Pinnacles, lying between French Frigate Shoals and Maro Reef, have the smallest landmass of all the Northwestern Hawaiian Islands. As the Hawaiian Islands are carried northwestward by the movement of the Pacific Plate on which they rest, they slowly subside, eventually disappearing underwater. Gardner is the northernmost emergent basalt rock in the Hawaiian Archipelago, the basalt of the more northerly islands and reefs having disappeared underwater. Despite its small size above water, the submerged bank reef surrounding Gardner is the largest in the entire chain, at 2,446 sq. km.

www.soest.hawaii.edu/pibhmc/cms/data-by-location/northwest-hawaiian-islands/submerged-banks/gardner-pinnacles/

>>10804712

Now now, cannot argue with scientists ya know

Earth’s Biggest Volcano Was Just Discovered In The Pacific Ocean Near Oahu

Monday June 1, 2020

The actual size of the mass beneath Gardner Pinnacles, researchers found after using bathymetric and gravity mapping, is 36,000 cubic-miles, which is twice the overall volume of the world’s previous designated largest volcano, Mauna Loa on the Big Island. It’s one of approximately 120 volcanoes that erupted over the past 82 million years along the Hawaiian-Emperor Chain. And in Pūhāhonu’s case, just 30 percent of that mass is actually visible to us above the seafloor, which would include the Gardner Pinnacles we see above sea level and the mass that stretches underwater. The mass of lava it emitted over about 14 million years is so heavy that the ocean’s crust has bent underneath Pūhāhonu, effectively hiding almost three-fourths of its total mass.

https://www.theinertia.com/environment/earths-biggest-volcano-was-just-discovered-in-the-pacific-ocean-near-oahu/

So a Gilligans Island reference again, then this landmass in the Hawaiian Islands that's not well known.

Who might the castaways be?

Yep, had to ask