Takuyo-Daini
{{Use dmy dates|date=April 2023}}
{{Short description|Seamount in the Pacific Ocean}}
{{Infobox seamount
| name = Takuyo-Daini
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| map = {{Location map|Oceania
| label = Takuyo-Daini
| mark = Red triangle with thick white border.svg
| coordinates = {{coord|34.3|N|143.9|E|notes=}}
}}
| map_caption = Location offshore Japan
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| location = Western Pacific Ocean
| group =
| coordinates = {{coord|34.3|N|143.9|E|display=inline,title|notes=}}
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| age = Cretaceous
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Takuyo-Daini is a seamount in the Pacific Ocean.
Takuyo-Daini is part of the so-called "Seiko" cluster{{sfn|Haggerty|Premoli Silva|1995|p=938}} or the "Geisha Guyots" in the Japanese Seamounts; it lies just west of Takuyo-Daisan seamount with which it forms a pair. Takuyo-Daini rises from a depth of {{convert|5195|m}} to a minimum depth of {{convert|1420|m}} and has a regular round shape with a small volume of {{convert|2237|km3}}. Both seamounts are guyots and together with two other guyots known as Winterer and Isakov have been interpreted as being part of a hotspot track.
The Western Pacific Ocean contains a large number of seamounts which often from clusters or groups. Many of them have flat tops {{convert|1|-|2|km}} below sea level.{{sfn|Haggerty|Premoli Silva|1995|p=935}} A number of these formed during a large-scale volcanic episode in the Albian-Aptian era of the Cretaceous; this includes Takuyo-Daini, where radiometric dating has yielded ages of 118.6 million years ago.{{sfn|Haggerty|Premoli Silva|1995|p=938}} At the time of its formation this seamount was located in the central Pacific Ocean. Fossils of rudist bivalves have been found on Takuyo-Daini; the seamount once featured rudist reefs that ceased growing during the Albian. The rudist genera Magallanesia was discovered on Takuyo-Daini and on Cebu in the Philippines.
References
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= Sources =
{{refbegin}}
- {{Citation|last1=Haggerty|first1=J.A.|date=December 1995|chapter-url=http://www-odp.tamu.edu/publications/144_SR/VOLUME/CHAPTERS/sr144_53.pdf|publisher=Ocean Drilling Program|doi=10.2973/odp.proc.sr.144.074.1995|access-date=4 December 2018|last2=Premoli Silva|first2=I.|title=Proceedings of the Ocean Drilling Program, 144 Scientific Results|volume=144|series=Proceedings of the Ocean Drilling Program|chapter=Comparison of the Origin and Evolution of Northwest Pacific Guyots Drilled during Leg 144|doi-access=free}}
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