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Phosphorites from the error seamount, Northern Arabian Sea
DRS at CSIR-National Institute of Oceanography
View Archive Info| Field | Value | |
| Title |
Phosphorites from the error seamount, Northern Arabian Sea
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| Creator |
Rao, V.P.
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| Subject |
Geology and Geophysics
phosphorite geochemistry seamounts ISW, Arabian Sea |
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| Description |
Phosphorites were dredged from the flanks of the Error Seamount, off the Somali Coast from depths of 400-460 m. These occur as dense slabs and irregular lumps associated with limestones. Polished and thin section studies show that the phosphorites are algal foraminiferal limestones of shallow water origin. X-ray diffraction study shows that calcite is the dominant mineral followed by francolite, fluorite and goethite. P2O5 concentration of the phosphorite varies between 18.0 and 21.5%. It appears that these phosphorites were formed in Tertiary times by diagenesis and the subsidence of the seamount due to sea floor spreading and eustatic sea level variations might have terminated the processes of phosphatization and resulted in residual phosphorites on the Error Seamount.
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| Date |
1995-06-12T10:01:19Z
2017-09-29T13:48:20Z 1995-06-12T10:01:19Z 2017-09-29T13:48:20Z 1986 |
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| Type |
Journal Article
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| Identifier |
Marine Geology, vol.71; 1986; 177-186
0025-3227 http://drs.nio.org/drs/handle/2264/6229 |
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| Language |
en
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| Relation |
Mar Geol
SCI |
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| Publisher |
Elsevier
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