Lau Basin
The Lau Basin[1] is a back-arc basin located at the Australian Plate-Pacific Plate boundary in the Pacific Ocean. It was formed by the subduction of the Pacific Plate beneath the Australian Plate. The basin is bordered by the Tonga-Kermadec Ridge to the east, a frontal arc, and the Lau-Colville Ridge to the west, a remnant arc.[2]
Geography
changeThe Lau Basin joins with the Havre Trough to the south and has a triangular shape. It reaches a maximum width of 500 km (310 mi) in the northern region.[3][4][5]
History
changeThe Lau Basin is relatively young, with much of its formation occurring within the last 5 million years.[3] It originated due to extensional rifting and seafloor spreading that separated a previously continuous island arc.[6] Around 25 million years ago, the Pacific Plate started drifting away from the Australian Plate, causing the volcanic Tonga-Kermadec Ridge to split and forming the basin.[2]
References
change- ↑ https://www.researchgate.net/publication/222656327
- ↑ 2.0 2.1 Auzende, Jean-Marie (2000). "The Lau Basin: A model for the study of back-arc basins". Earth and Planetary Science Letters. 107 (2): 222–233. doi:10.1016/0012-821X(90)90083-X.
- ↑ 3.0 3.1 Bevis, Michael (2006). Plate Boundary Zones. American Geophysical Union. p. 123. ISBN 978-0875909892.
{{cite book}}: Check|isbn=value: checksum (help) - ↑ https://www.researchgate.net/publication/222487335
- ↑ Karig, Daniel E. (1970-01-01). "Ridges and basins of the Tonga-Kermadec Island Arc System". Journal of Geophysical Research. 75: 239–254. doi:10.1029/JB075i002p00239. ISSN 0148-0227.
- ↑ Eissen, Jean-Pierre (1994). "Back-arc extension and seafloor spreading in the Lau Basin: Implications for Arc Development". Geology. 22 (11): 1047–1051. doi:10.1130/0091-7613(1994)022%3C1047:BEASSI%3E2.3.CO;2.
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