Derwent Hunter Guyot

The Derwent Hunter Guyot is an extinct volcanic seamount of the Tasmantid Seamount Chain.

Topographic map of Zealandia that includes the Derwent Hunter Guyot at the sea bottom of the Tasman Sea in the line of the Tasmantid hotspot seamounts off the east coast of Australia.

Derwent Hunter Guyot
Location of the Derwent Hunter Guyot
Summit depth	323 metres (1,060 ft)[1]
Location
Location	To the east of the coast of New South Wales, Australia
Group	Tasmantid Seamount Chain
Coordinates	30°51′57″S 156°11′21″E
Geology
Type	Guyot
History
Discovery date	Named from the Australian schooner "Derwent Hunter" that discovered it in 1958[1]

It is a basaltic volcano that erupted between 12,400,000 and 15,400,000 years ago,^[2] with survey data that indicates it rises about 4,000 m (13,000 ft) above the local sea floor to a minimum depth of 323 m (1,060 ft).^[1] The sediments deposited on top of the alkali olivine basalt^[2] originate from the early Middle Miocene.^[3] The Derwent Hunter Guyot appears to be double peaked.^[4] It was discovered in 1958^[1] and described as a seamount in 1961.^[5]

The waters above it are incorporated in the Central Eastern Marine Park, an Australian marine park.^[6]