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Takuyo-Daini
Takuyo-Daini is a seamount in the Pacific Ocean. Takuyo-Daini is part of the so-called "Seiko" cluster 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 to a minimum depth of and has a regular round shape with a small volume of . Both seamounts are guyots and together with two other guyots known as Winterer Guyot, Winterer and Isakov Guyot, 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 below sea level. 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. At the time of its formation this seamount was located in the central Pacific Ocean. Fossils of rudist bivalves have been found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Takuyo-Daisan
Takuyo-Daisan is a guyot in the Western Pacific Ocean off Japan. It is deep and has a square-shaped flat top surrounded by a perimeter ridge. Several other seamounts lie nearby. The seamount formed as a volcanic island during the Cretaceous in the area currently occupied by French Polynesia. Subsequently reefs developed around the volcanic island and generated a carbonate platform which drowned during the Albian along with several other such platforms in the world. Name and research history Takuyo-Daisan was formerly known as "Seiko guyot"; "Seiko guyot" was used even earlier for Takuyo-Daini while Takuyo-Daisan was named "Eiko". This seamount was drilled by the Ocean Drilling Program, with Site 879 located on the seamount. Geography and geology Takuyo-Daisan lies southeast of the city of Yokohama, Japan. It is the easternmost seamount in the "Seiko" cluster of the Japanese Seamounts. The Boso Triple Junction lies only away from the seamount. Local Takuyo-Daisan is a guy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |