Maud Rise (66°S 3°E / 66°S 3°E) is an oceanic plateau, which rises, at its shallowest, to depths of about a 1,000 meters.[1] It is located in the Weddell Sea in the Southern Ocean. Its name was approved by the Advisory Committee for Undersea Features in June 1987.[2]
Geology
Maud Rise formed part of the south-eastern African large igneous province (LIP) which developed south of Africa 100 to 94 million years ago (Ma). This LIP first formed 140-122 Ma east of South Africa where the Mozambique Ridge is now located. There it reached a maximum extent around 120 Ma when the African-Antarctic spreading zone was located below its eastern flank. Astrid Ridge was possibly part of this LIP as well.[3]
The LIP formation then continued intermittently until it finally reached its maximum extent south of South Africa 100 Ma. This volcanism ended 94 Ma after which sea-floor spreading divided the LIP into the Agulhas Plateau (south of South Africa), Northeast Georgia Rise (near South Georgia Island off South America), and Maud Rise.[3]
See also
References
Notes
- ^ "GEBCO Gridded Bathymetry Data".
- ^ "Maud Rise". Geographic Names Information System. United States Geological Survey, United States Department of the Interior. Retrieved 2013-08-29.
- ^ a b Gohl, Uenzelmann-Neben & Grobys 2011, Timing and extent of Large Igneous Province formation, pp. 384–385
Sources
- Gohl, K.; Uenzelmann-Neben, G.; Grobys, N. (2011). "Growth and dispersal of a southeast African Large Igenous Province" (PDF). South African Journal of Geology. 114 (3–4): 379–386. Bibcode:2011SAJG..114..379G. doi:10.2113/gssajg.114.3-4.379. Retrieved 11 April 2015.
This article incorporates public domain material from "Maud Rise". Geographic Names Information System. United States Geological Survey.
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This page was last edited on 9 July 2023, at 07:31