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Sewing-Machine Needles, also known as Rocas Ministro Ezcurra () is a group of three prominent rock needles, the highest 45 m above water, lying close southeast of
Rancho Point Rancho Point () is a conspicuous rock headland, 170 m, marking the east extremity of Deception Island, in the South Shetland Islands The South Shetland Islands are a group of Antarctic islands with a total area of . They lie about nort ...
,
Deception Island Deception Island is an island in the South Shetland Islands close to the Antarctic Peninsula with a large and usually "safe" natural harbor, which is occasionally troubled by the underlying active volcano. This island is the caldera of an act ...
, in the
South Shetland Islands The South Shetland Islands are a group of Antarctic islands with a total area of . They lie about north of the Antarctic Peninsula, and between southwest of the nearest point of the South Orkney Islands. By the Antarctic Treaty of 195 ...
. The name ''Sewing-Machine Rock'' was given by whalers for what was originally a conspicuous natural arch. Needles is now considered the more suitable descriptive term; an earthquake tremor in 1924 caused the arch to collapse. The name ''Rocas Ministro Ezcurra'' was given by Dr Douglas (later Sir Douglas) Mawson, leader of the Australasian Antarctic Expedition of 1912-14.SCAR. 2016. Composite Gazetteer of Antarctica ENEA-PNRA. Scientific Committee on Antarctic Research (SCAR), Collated by Programma Nazionale di Ricerche in Antartide (PNRA-Italy) for the SCAR Standing Committee on Antarctic Geographic Information (SCAGI). Australian Antarctic Data Centre, Canberra, Australia. Available online at: https://data.aad.gov.au/aadc/gaz/scar/display_name.cfm?gaz_id=111125 These rocks are remnants of a
tuff Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption. Following ejection and deposition, the ash is lithified into a solid rock. Rock that contains greater than 75% ash is considered tuff, while rock cont ...
cone A cone is a three-dimensional geometric shape that tapers smoothly from a flat base (frequently, though not necessarily, circular) to a point called the apex or vertex. A cone is formed by a set of line segments, half-lines, or lines con ...
, part of the Baily Head
Formation Formation may refer to: Linguistics * Back-formation, the process of creating a new lexeme by removing or affixes * Word formation, the creation of a new word by adding affixes Mathematics and science * Cave formation or speleothem, a secondar ...
.


See also

*
Composite Antarctic Gazetteer The Composite Gazetteer of Antarctica (CGA) of the Scientific Committee on Antarctic Research (SCAR) is the authoritative international gazetteer containing all Antarctic toponyms published in national gazetteers, plus basic information about t ...
* List of Antarctic islands south of 60° S *
SCAR A scar (or scar tissue) is an area of fibrous tissue that replaces normal skin after an injury. Scars result from the biological process of wound repair in the skin, as well as in other organs, and tissues of the body. Thus, scarring is a na ...
*
Territorial claims in Antarctica Seven sovereign states – Argentina, Australia, Chile, France, New Zealand, Norway, and the United Kingdom – have made eight territorial claims in Antarctica. These countries have tended to place their Antarctic scientific observation and st ...


References


External links


SCAR Composite Antarctic Gazetteer
Rock formations of Antarctica Geography of Deception Island {{DeceptionIsland-geo-stub