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Mauke, Mitiaro and Atiu: geomorphology of Makatea Islands in the southern Cooks

Journal Article


Abstract


  • Mauke, Mitiaro and Atiu are deeply eroded volcanic islands in the southern Cook Islands, south Pacific, each surrounded by a rim of elevated Cenozoic reef limestone (makatea). This paper presents the results of instrumental topographic surveys of each island. The maximum elevation of the volcanics is 24.4, 8.9 and 71.0 m on Mauke, Mitiaro and Atiu, respectively, and of the makatea 14.7, 10.9 and 22.1 m. The makatea is fringed on its seaward side and in places partially overlain by a sequence of late Pleistocene reef limestones which reach maximum elevations of 12.7, 7.8 and 12.2 m respectively. These exhibit varied reef facies as well as emergent reef topographies, especially groove-and-spur systems. Elevated notches, cliff-foot benches and emergent reef flats indicate higher Holocene relative sea-levels at up to at least 3 m above present. -from Authors

Publication Date


  • 1990

Citation


  • Stoddart, D. R., Woodroffe, C. D., & Spencer, T. (1990). Mauke, Mitiaro and Atiu: geomorphology of Makatea Islands in the southern Cooks. Atoll Research Bulletin, 339-346(341), 1-65. doi:10.5479/si.00775630.341.1

Scopus Eid


  • 2-s2.0-0025682132

Web Of Science Accession Number


Start Page


  • 1

End Page


  • 65

Volume


  • 339-346

Issue


  • 341

Abstract


  • Mauke, Mitiaro and Atiu are deeply eroded volcanic islands in the southern Cook Islands, south Pacific, each surrounded by a rim of elevated Cenozoic reef limestone (makatea). This paper presents the results of instrumental topographic surveys of each island. The maximum elevation of the volcanics is 24.4, 8.9 and 71.0 m on Mauke, Mitiaro and Atiu, respectively, and of the makatea 14.7, 10.9 and 22.1 m. The makatea is fringed on its seaward side and in places partially overlain by a sequence of late Pleistocene reef limestones which reach maximum elevations of 12.7, 7.8 and 12.2 m respectively. These exhibit varied reef facies as well as emergent reef topographies, especially groove-and-spur systems. Elevated notches, cliff-foot benches and emergent reef flats indicate higher Holocene relative sea-levels at up to at least 3 m above present. -from Authors

Publication Date


  • 1990

Citation


  • Stoddart, D. R., Woodroffe, C. D., & Spencer, T. (1990). Mauke, Mitiaro and Atiu: geomorphology of Makatea Islands in the southern Cooks. Atoll Research Bulletin, 339-346(341), 1-65. doi:10.5479/si.00775630.341.1

Scopus Eid


  • 2-s2.0-0025682132

Web Of Science Accession Number


Start Page


  • 1

End Page


  • 65

Volume


  • 339-346

Issue


  • 341