Summary
La Perouse Pinnacle is a steep basalt outcrop at French Frigate Shoals in the Pacific Ocean.[1] Rising 122 ft (37 m) above sea surface, it is the eroded plug of a shield volcano and caldera that formed 12 million years ago. The rocky formation lies within the Papahānaumokuākea Marine National Monument.[2] Because of its prominence and shape, the pinnacle can be mistaken for a sailing ship from a distance.
Geography edit
The pinnacle stands at the heart of French Frigate Shoals, about midway in the Northwestern Hawaiian Islands approximately 3 mi (4.8 km) west-southwest of East Island, Hawaii.[3] It rises 122 ft (37 m) above the ocean.[4] It is comprised of dense basalt rock, covering an area of approximately 39,580 sq ft (3,677 m2), that extends 751 ft (229 m) in the northwest–southeast direction, with a maximum width of 160 ft (50 m). It creates a habitat for marine organisms, especially algae, contributing to the area's biodiversity. The pinnacle is visible from a distance of about 8 mi (13 km) away.[5][6] It is surrounded by coral reefs and a shorter, rocky islet about 5–10 ft (1.5–3.0 m) tall.
Modern history edit
The rock is named for Jean-François de Galaup, comte de Lapérouse. In the spring of 1786, the French frigates L'Astrolabe, under Fleuriot de Langle, and La Boussole, under de Galaup, narrowly avoided disaster at French Frigate Shoals. The Boussole mistook the pinnacle for the Astrolabe, but a last-minute course correction averted collision.[2][7][8]
In the 19th century, the whaling ship Rebecca, on a moonlit night, mistook La Perouse Pinnacle for a sailing vessel. Attempts to signal went unanswered, and the ship ran aground on the reef, however the ship and the crew survived.[9][10]
In 1923, the Tanager expedition visited and made the first scientific determination of the pinnacle's basalt rock composition.[11]
The pinnacle was a noted landmark by sailor's conducting a search for a lost sailor in the late 2010s, and was noted in an article in the sailing magazine Cruising World in 2018.[12]
See also edit
- Ball's Pyramid, the tallest basalt outcrop on earth, also located in the Pacific Ocean
References edit
- ^ "La Perouse Pinnacle". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved October 11, 2023.
- ^ a b "Papahānaumokuākea Marine National Monument".
- ^ "NOAA Chart 19401" (PDF). Archived from the original (PDF) on 2022-02-20. Retrieved 2020-02-17.
- ^ Stanley, David (1985). South Pacific Handbook. Moon publications. p. 549. ISBN 9780918373052.
- ^ "La Perouse Pinnacle". memim.com. Retrieved 2023-09-07.
- ^ United States Hydrographic Office (1940). Sailing Directions for the Pacific Islands (eastern Groups). Vol. II. U.S. Government Printing Office. p. 444.
- ^ Bryan, Edwin Horace, ed. (1978). The Northwestern Hawaiian Islands: An Annotated Bibliography. U.S. Fish and Wildlife Service. pp. 11–12.
- ^ Rauzon, Mark J. (2000). Isles of Refuge: Wildlife and History of the Northwestern Hawaiian Islands. University of Hawaii Press. p. 54. ISBN 9780824846268.
- ^ Rosser, W. H. (1870). North Pacific Pilot, Part II: The Seaman's Guide to the Islands of the North Pacific. London: James Imray & Son. p. 55.
- ^ Imray, James Frederick (1870). North Pacific Pilot: The seaman's guide to the islands of the North Pacific by W.H. Rosser. James Imray & Son.
- ^ Amerson, A. Binion (1971). "The natural history of French Frigate Shoals, Northwestern Hawaiian Islands" (PDF). Atoll Research Bulletin. 150: 1–383. doi:10.5479/SI.00775630.150.1. S2CID 129044723. Archived from the original (PDF) on 2021-02-01.
- ^ Cruising World - Searching for a Lost Sailor 2018
External links edit
- Historic Feature: La Pérouse Pinnacle
23°46′09″N 166°15′39″W / 23.76906°N 166.26090°W