This low relief mound, several meters across, may be underlain by methane hydrate. Fluid that was denser than seawater flowed out of holes in the surface of the mound, entraining fine sediment that then billowed into the water column, as seen here. Red laser dots are separated by 10 centimeters (3.94 inches).
Mound
Image courtesy of the NOAA Office of Ocean Exploration and Research, Windows to the Deep 2019. Download larger version (jpg, 892 KB).
This low relief mound, several meters across, may be underlain by methane hydrate. Fluid that was denser than seawater flowed out of holes in the surface of the mound, entraining fine sediment that then billowed into the water column, as seen here. Red laser dots are separated by 10 centimeters (3.94 inches).
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