Taupo Bank
Taupo Bank is located in Pacific Ocean
Taupo Bank
Location of the Taupo Bank
Summit depth128 metres (420 ft)
Location
LocationJust under 500 km (310 mi) to the east and slightly north of Sydney, New South Wales, Australia
GroupTasmantid Seamount Chain
Coordinates33°10′0″S 156°10′0″E / 33.16667°S 156.16667°E / -33.16667; 156.16667
Geology
TypeGuyot

The Taupo Bank (also previously known as Mont Taupo,Taupo Guyot or Taupo Tablemount) is an extinct volcanic seamount of the Tasmantid Seamount Chain.

Topographic map of Zealandia that includes the Taupo Bank at the sea bottom of the Tasman Sea in the line of the Tasmantid hotspot seamounts off the east coast of Australia.

It is a basaltic volcano that erupted between 10,300,000 to 11,400,000 years ago,[1] with survey data that indicates it rises about 3,160 m (10,370 ft) above the local sea floor to a minimum depth of 128 m (420 ft).[2] The sediments deposited on top of the alkali olivine basalt[1] originate from the Late Miocene.[3] It was likely a coral-capped volcanic seamount during the Pleistocene low sea level.[4] It was described as a seamount in 1961.[5]

The Tasmantid Seamount Chain is parallel to the Lord Howe Seamount Chain. Because detailed compositional analysis elsewhere has suggested that as well as individual compositional maturation with time within an individual seamount chain there may be underlying shared mantle plume sources in such parallel chains this issue has been examined with samples from Taupo Bank. These samples share compositional analysis similarities with some of the volcanics that formed Lord Howe Island which would be consistent with a common or similar mantle plume source.[6]

The waters above it are incorporated in the Central Eastern Marine Park, an Australian marine park.[7]

References

  1. 1 2 Eggins, S. M.; Green, David Headley; Falloon, Trevor J. (1991). "The Tasmantid seamounts: Shallow melting and contamination of an EM1 mantle plume". Earth and Planetary Science Letters. 107 (3–4): 448–462. doi:10.1016/0012-821X(91)90092-V.
  2. ↑ "GEBCO Undersea Feature Names Gazetteer".
  3. ↑ Quilty, Patrick G. (1993). "Tasmantid and Lord Howe seamounts: biostratigraphy and palaeoceanographic significance". Alcheringa: An Australasian Journal of Palaeontology. 17 (1): 27–53. doi:10.1080/03115519308619487.
  4. ↑ van der Linden, Willem JM (1970). "Morphology of the Tasman Sea floor". New Zealand Journal of Geology and Geophysics. 13 (1): 282–91. doi:10.1080/00288306.1970.10428218.
  5. ↑ Standard, J. C. (1961). "Submarine Geology of the Tasman Sea". Geological Society of America Bulletin. 72 (12): 1777–1788. doi:10.1130/0016-7606(1961)72[1777:SGOTTS]2.0.CO;2.
  6. ↑ Rogers, Angus; Flanigan, Michaela; Nebel, Oliver; Nebel-Jacobsen, Yona; Wang, Xueying; Arculus, Richard J.; Miller, Laura; Smith, Ian; Mather, Ben R.; Kendrick, Mark; O'Neill, Hugh St.C. (2023). "The isotopic origin of Lord Howe Island reveals secondary mantle plume twinning in the Tasman Sea". Chemical Geology. 622 (121374). doi:10.1016/j.chemgeo.2023.121374. ISSN 0009-2541.
  7. ↑ "Temperate East Marine Parks Network Management Plan 2018" (PDF). Parks Australia. Retrieved August 16, 2018.
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