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Australian Antarctic Territory 2010 Macquarie Island Macquarie Island is located where the Australian Plate meets the Pacific Plate in the southwestern Pacific Ocean. It comprises exposed ophiolite sequence including pillow basalt and other extrusive rocks (shown in the stamp), as well as a sliver of ultramafic rocks from the Earth's upper mantle.  |
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Bedrock Of The Community
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Australian Antarctic Territory 1984 Landscapes Mt Coates is a peak in the Transantarctic Mountains and is close to the coast of Ross Sea. It comprises Jurassic basaltic rocks which were uplifted and eroded during Tertiary.  |
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| Edited by KuoLC5310 - 12/07/2021 5:38 pm |
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Bedrock Of The Community
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Australian Antarctic Territory 2013 Landscapes David Range belongs to the Framnes Mountains located near the Mawson Coast. It comprises Precambrian charnockite which intruded into older metamorphic rocks. Mt Parsons is located at the northern end of David Range, with a volcanic neck named Fang Peak.   |
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| Edited by KuoLC5310 - 12/09/2021 10:28 am |
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Norway 1985 From Queen Maud Land - Antarctica Hoggestabben Butte is located in the Mühlig-Hofmann Mountains. This prominent monzonite outcrop stands at 2410 m above sea level.  |
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Norway 2019 Queen Maud Land Holtanna Peak is located in the eastern part of Fenriskjeften Mountain. This colossal wind-carved charnockite outcrop stands at 2650 m above sea level with a small cirque glacier on its east side.  |
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British Antarctic Territory 1995 Geological Formations 17p: Hauberg Mountains – folded sedimentary rocks 35p: Arrowsmith Peninsula – dykes cross-cutting granite 40p: Colbert Mountains – columnar jointing in volcanic rocks 76p: Succession Cliffs – flat-lying sedimentary rocks     |
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French Southern and Antarctic Territories 2001 Landscapes The Arches of Kerguelen is a 40 meter-high natural arch of a basalt formation. It collapsed sometimes between 1908 and 1913, leaving two stacks standing.  |
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| Edited by KuoLC5310 - 12/22/2021 08:03 am |
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French Southern and Antarctic Territories 2020 Landscapes Doigt de Sainte-Anne is a volcanic neck made of phonolite. The sharp peak is located on the edge of Larose bay, in Grande Terre, the main island of the Kerguelen archipelago.  |
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| Edited by KuoLC5310 - 12/22/2021 08:21 am |
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French Southern and Antarctic Territories 2018 Landscapes Saint Paul Island is located near the southern end of the East Indian Ocean Ridge. It is composed of an older tuff cone surmounted by a basaltic stratovolcano with a caldera. The NE half of the volcano is submerged, with La Quille Rock standing above the surface.  |
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| Edited by KuoLC5310 - 12/26/2021 9:02 pm |
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French Southern and Antarctic Territories 2020 & 2001 Landscapes The Crozet Islands on the Antarctic Plate were created by a hotspot. Possession Island (9 million years old) features rugged landscape of basalt formation cut by deep glaciated valleys. The Apostle Islets (5 million years old) are relatively small outcrops of alkali basalt.   |
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South Georgia and The South Sandwich Islands 2017 Landscapes South Georgia Island is located on the northern edge of the Scotian Plate. Cape Rosa is a felsic volcanic peak above the Lower Cretaceous volcaniclastic sandstone and mudstone which covers most of the island.  |
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Argentina 1980 75 Years of Orcadas Base in Antarctica South Orkney Islands sit on a small piece of continental crust on the Antarctic-Scotia Plate boundary. The islands are composed mainly of Permian and Triassic greywacke and shale formations with different degrees of metamorphism.  |
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| Edited by KuoLC5310 - 12/31/2021 7:39 pm |
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Argentina 2016 25th Anniversary of Protocol to the Antarctic Treaty Deception Island is located within the Bransfield Strait between the South Shetland Islands and the Antarctic Peninsula. The horseshoe-shaped island is the caldera of an active shield volcano composed of basaltic lava flows and pyroclastic layers.  |
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British Antarctic Territory 2021 30 Years of Environmental Protection Wiencke Island is located between Anvers Island and the Antarctic Peninsula. Glacier-carved Mesozoic granite and diorite form the rugged Luigi Peak and the Fief Range standing above the younger volcanic rocks.  |
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| Edited by KuoLC5310 - 01/01/2022 5:21 pm |
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United Nations (Geneva) 2002 International Year of Mountains Mount Vinson (elevation 4892 m) is the highest peak in Antarctica. It lies in the north part of Vinson Massif near the coast of western Antarctica. The mountain comprises steeply inclined Paleozoic strata of sandstones and argillites. The rocks at the crest of Mount Vinson contain Devonian fossils.  |
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Replies: 341 / Views: 110,806 |
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Posted 12/07/2021 12:19 am
