Earth:Mount Hodson
| Mount Hodson | |
|---|---|
| Highest point | |
| Elevation | 835 m (2,740 ft) |
| Prominence | 835 m (2,740 ft) [1] |
| Listing | Ribu |
| Coordinates | [ ⚑ ] 56°42′S 27°09′W / 56.70°S 27.15°W |
| Geography | |
| Location | South Sandwich Islands |
| Geology | |
| Mountain type | Stratovolcano |
| Last eruption | Unknown |
Mount Hodson is an ice-covered stratovolcano and the highest point on Visokoi Island in the South Sandwich Islands with an elevation of 835 m (2,740 ft). It is situated in the north of the South Sandwich Islands and is the southernmost of the Traversay Islands.
The volcano contains numerous scoria cones on the lower flanks of the island. The eruptive history of the volcano is uncertain but there is evidence to suggest eruptions as recently as 1930.
Mount Hodson was named after Arnold Hodson who was governor of the Falkland Islands and Dependencies from 1926 to 1930.
Geography
Mount Hodson is located on the uninhabited Visokoi Island, one of the northernmost South Sandwich Islands and part of South Georgia and the South Sandwich Islands. It is located in the Southern Ocean and, along with Leskov Island, 58 kilometres (36 mi) west of Visokoi, and Zavodovski Island, 45 kilometres (28 mi) north of Visokoi, it forms the Traversay Islands, a subgroup of the South Sandwich Islands.[2][3][4]
Geology
Mount Hodson is a stratovolcano[1] – a typically conical volcano characterised by a steep profile with a summit crater and explosive eruptions.[5] It is largely covered in ice and the rounded summit lies west of the centre of the island. A number of basaltic scoria cones – small, steep-sided cones built of loose pyroclastic rock fragments – make up the lower flanks of the island.[1]
Mount Hodson's eruptive history is uncertain.[6] Smoke columns was observed by passing ships in 1930 which may have indicated an eruption.[3][7][8]
Etymology
Mount Hodson was named after Arnold Hodson, a British colonial administrator, who served as Governor of the Falkland Islands from 1926 to 1930.[9]
See also
- List of volcanoes in South Sandwich Islands
References
- ↑ 1.0 1.1 1.2 "Hodson". Smithsonian Institution. https://volcano.si.edu/volcano.cfm?vn=390110.
- ↑ Lynch, Heather J.; White, Richard; Naveen, Ron; Black, Andy; Meixler, Marcia S.; Fagan, William F. (1 September 2016). "In stark contrast to widespread declines along the Scotia Arc, a survey of the South Sandwich Islands finds a robust seabird community" (in en). Polar Biology 39 (9): 1615. doi:10.1007/s00300-015-1886-6. ISSN 1432-2056. Bibcode: 2016PoBio..39.1615L. https://link.springer.com/article/10.1007/s00300-015-1886-6.
- ↑ 3.0 3.1 Holdgate, M.W.; Baker, P.E. (1979). "The South Sandwich Islands: I. General description" (PDF). British Antarctic Survey Scientific Reports (Cambridge: British Antarctic Survey) 91: 22, 27. http://nora.nerc.ac.uk/509194/.
- ↑ Barr, William (October 2000). "First landings on Zavodovski Island, South Sandwich Islands, 1819" (in en). Polar Record 36 (199): 317–318. doi:10.1017/S0032247400016806. ISSN 1475-3057. Bibcode: 2000PoRec..36..317B. https://doi.org/10.1017/S0032247400016806.
- ↑ "Types of volcano". British Geological Survey. https://www.bgs.ac.uk/discovering-geology/earth-hazards/volcanoes/how-volcanoes-form/#:~:text=Stratovolcanoes%20are%20more%20likely%20to,rocks%20in%20different%20tectonic%20settings..
- ↑ Leat, Philip T.; Tate, Alex J.; Tappin, David R.; Day, Simon J.; Owen, Matthew J. (September 2010). "Growth and mass wasting of volcanic centers in the northern South Sandwich arc, South Atlantic, revealed by new multibeam mapping". Marine Geology 275 (1–4): 117. doi:10.1016/j.margeo.2010.05.001. Bibcode: 2010MGeol.275..110L. https://doi.org/10.1016/j.margeo.2010.05.001.
- ↑ LeMasurier, W.E., ed (1990) (in en). Volcanoes of the Antarctic Plate and Southern Oceans. Antarctic Research Series. 48. Washington, D. C.: American Geophysical Union. pp. 371. doi:10.1029/ar048. ISBN 978-0-87590-172-5. http://doi.wiley.com/10.1029/AR048.
- ↑ Smellie, J. L.; Leat, P. T. (19 November 2024). "Geological evolution and construction of a glacierized active intra-oceanic arc volcano: Visokoi Island (South Sandwich Islands)". Bulletin of Volcanology 86 (12): 20. doi:10.1007/s00445-024-01784-y.
- ↑ "Mount Hodson". United States Geological Survey. https://geonames.usgs.gov/apex/f?p=gnispq:5:::NO::P5_ANTAR_ID:6849.
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