: Paleoclimatology: seamount

geomorphological structure > seamount

seamount

A seamount is a large geologic landform that rises from the ocean floor but that does not reach to the water's surface (sea level), and thus is not an island, islet or cliff-rock. The peaks are often found hundreds to thousands of meters below the surface, and are therefore considered to be within the deep sea. During their evolution over geologic time, the largest seamounts may reach the sea surface where wave action erodes the summit to form a flat surface. After they have subsided and sunk below the sea surface such flat-top seamounts are called guyots or tablemounts. The greatest danger from seamounts are flank collapses; as they get older, extrusions seeping in the seamounts put pressure on their sides, causing landslides that have the potential to generate massive tsunamis. Because of their abundance, seamounts are one of the most common marine ecosystems in the world. (Adapted from: https://en.wikipedia.org/wiki/Seamount and https://en.wikipedia.org/wiki/Guyot)

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