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Cockburn Island (Antarctica) : ウィキペディア英語版 | Cockburn Island (Antarctica)
Cockburn Island is an oval island long, consisting of a high plateau with steep slopes surmounted on the northwest side by a pyramidal peak high, lying in the north-east entrance to Admiralty Sound, south of the north-east end of Antarctic Peninsula. It was discovered by a British expedition under Ross, 1839-43, who named it for Admiral George Cockburn, Royal Navy, then senior Lord of the Admiralty. ==Geology== Geologically, the area makes up the Cockburn Island Formation, which was studied extensively in the late 1990s by H. A. Jonkers. Rocks found on the island are volcanic, and the island is characterized by its "precipitous cliffs". A "Pecten conglomerate" from the late Pliocene or early Pleistocene period has been identified on the island, situated on a wave-cut platform at 720-820 ft.
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