Английская Википедия:Bounty Seamount

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Шаблон:Short description Шаблон:Infobox seamount Bounty Seamount is a seamount in the Pacific Ocean, which reaches a depth of Шаблон:ConvertШаблон:Sfn or Шаблон:Convert. It is about Шаблон:Convert high.Шаблон:Sfn

Geology and geomorphology

The seamount is part of a group of seamounts about Шаблон:Convert away from Pitcairn Island, which includes several small seamounts and the large Adams Seamount.Шаблон:Sfn These seamounts were discovered in 1989.Шаблон:Sfn

Bounty has a conical shape, with three summit cones and several rift zones. Pillow lavas and hyaloclastite cover its slopes,Шаблон:Sfn and parasitic vents can be observed as well.Шаблон:Sfn The volcano has a volume of about Шаблон:Convert and has a width of Шаблон:Convert at its foot.Шаблон:Sfn Bounty has erupted rocks with compositions of alkali basalt, trachyandesite and trachyte.Шаблон:Sfn

Eruption history

Bounty Seamount was formed in several stages,Шаблон:Sfn and it could have developed over a time of 58,000 years.Шаблон:Sfn Alkali basalts from Bounty have been dated by potassium-argon dating to be 344,000 ± 32,000 years before present.Шаблон:Sfn Nevertheless, traces of recent volcanic activity and of hydrothermal venting have been found.Шаблон:Sfn

This hydrothermal venting manifests itself by the release of low-temperature fluids and the formation of iron-rich crusts.Шаблон:Sfn Temperatures of vented fluids amount to Шаблон:Convert.Шаблон:Sfn

References

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Sources

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