The source of an enormous pumice stone spotted floating in the Pacific Ocean has been discovered. The raft, which measures about 52 square miles—twice the size of Manhattan and bigger than Paris—was ...
From A to H, light-gray pumice, black pumice, brown pumice, gray-banded pumice, black-and-white-banded pumice, white pumice, pink pumice, and obsidian-bearing pumice. I, J, and K show goose barnacles, ...
A computer model could help track rafts of floating rock in the ocean, perhaps giving scientists a way to warn ship captains to stay away. The rock in question is pumice, which forms from rapidly ...
The pumice plain between Mount St. Helens and Spirit Lake seethes with steam and superheated gases on May 19, 1980. LONGVIEW — New research on the cataclysmic 1980 Mount St. Helens eruption describes ...
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