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Nightingale Islands : ウィキペディア英語版 | Nightingale Islands
The Nightingale Islands are a group of three islands in the South Atlantic Ocean, part of the Tristan da Cunha territory. They consist of Nightingale Island, Middle Island and Stoltenhoff Island. The islands are administered by the United Kingdom as part of the overseas territory of Saint Helena, Ascension and Tristan da Cunha. The Nightingale Islands are uninhabited. Nightingale Island is the smallest of the four main islands of the Tristan da Cunha Group, measuring only , and lies away from Tristan and from Inaccessible. Stoltenhoff and Alex (also known as Middle Island), are really two large islets rather than conventional islands. ==Geology== Nightingale Island is the heavily eroded remnant of a volcano that was once much larger. The oldest potassium–argon dating from the island is 18 ± 4Ma. The youngest volcanic activity on the island is indirectly dated to 39,160 uncalibrated years BP by radiocarbon dates on peat overlain by volcanic tuff.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Nightingale Islands」の詳細全文を読む
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