Mount Vernon Harcourt, also unofficially known as Mount Harcourt, is a conical

stratovolcano A stratovolcano, also known as a composite volcano, is a typically conical volcano built up by many alternating layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with ...

, that rises over 1,535 meters, making up part of the Hallett Peninsula extending into the

Ross Sea The Ross Sea is a deep bay of the Southern Ocean in Antarctica, between Victoria Land and Marie Byrd Land and within the Ross Embayment, and is the southernmost sea on Earth. It derives its name from the British explorer James Clark Ross who ...

about south of

Mount Erebus Mount Erebus () is the southernmost active volcano on Earth, located on Ross Island in the Ross Dependency in Antarctica. With a summit elevation of , it is the second most prominent mountain in Antarctica (after Mount Vinson) and the second ...

, along with three overlapping

shield volcano A shield volcano is a type of volcano named for its low profile, resembling a shield lying on the ground. It is formed by the eruption of highly fluid (low viscosity) lava, which travels farther and forms thinner flows than the more viscous lava ...

es. The mountain was discovered in January 1841 by Sir James Clark Ross and named by him for the Reverend William Vernon Harcourt, one of the founders of the

British Association The British Science Association (BSA) is a charity and learned society founded in 1831 to aid in the promotion and development of science. Until 2009 it was known as the British Association for the Advancement of Science (BA). The current Chief ...

. Mount Vernon Harcourt is part of the Hallett Volcanic Province of the McMurdo Volcanic Group. Two dates have been obtained from the volcano's rock, roughly 5.5 and 6.6 million years in age. These samples are

alkalic Alkalinity (from ) is the capacity of water to resist acidification. It should not be confused with basicity, which is an absolute measurement on the pH scale. Alkalinity is the strength of a buffer solution composed of weak acids and their ...

in composition.

References

Stratovolcanoes of New Zealand Volcanoes of Victoria Land Miocene stratovolcanoes Borchgrevink Coast Stratovolcanoes of Antarctica {{BorchgrevinkCoast-geo-stub

See also

References