Iyer, S D; Mukhopadhyay, R; Popko, D C (2007): Major and trace element composition in the Central Indian Ocean Basin ferrobasalts (Table 2, 3) [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.670932, Supplement to: Iyer, SD et al. (1999): Ferrobasalts from the Central Indian Ocean Basin. Geo-Marine Letters, 18(4), 297-304, https://doi.org/10.1007/s003670050083
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Abstract:
We report the occurrence of ferrobasalts recovered from the Central Indian Ocean Basin crust generated at the Southeast Indian Ridge during a phase of moderate to fast spreading accretion (~110-190 mm/yr, full rate).The rocks are rich in plagioclase, FeO* (13/19 %), and TiO2 (2.27/2.76 %), poor in olivine and MgO (3.44/6.20%), and associated with topographic highs and increased amplitude magnetic anomalies corresponding to chrons A25 and A24. We suggest that secon dary eruptions from ancient N-MORB magma, which may have been trapped at a shallow depth in a horizon of neutral buoyancy, could have produced the ferrobasalts.
Coverage:
Median Latitude: -12.069990 * Median Longitude: 77.296670 * South-bound Latitude: -13.333300 * West-bound Longitude: 76.500000 * North-bound Latitude: -11.000000 * East-bound Longitude: 78.000000
Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m
Event(s):
Comment:
Whole rock chemistry of the ferrobasalts was determined through XRF and ICP-AES
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | LATITUDE | Latitude | Geocode | |||
| 2 | LONGITUDE | Longitude | Geocode | |||
| 3 | DEPTH, sediment/rock | Depth sed | m | Geocode | ||
| 4 | Depth, bathymetric | Bathy depth | m | Iyer, S D | ||
| 5 | Sample code/label | Sample label | Iyer, S D | |||
| 6 | Sample comment | Sample comment | Iyer, S D | |||
| 7 | Lithology/composition/facies | Lithology | Iyer, S D | |||
| 8 | Silicon dioxide | SiO2 | % | Iyer, S D | ||
| 9 | Titanium dioxide | TiO2 | % | Iyer, S D | ||
| 10 | Aluminium oxide | Al2O3 | % | Iyer, S D | ||
| 11 | Iron oxide, FeO | FeO | % | Iyer, S D | total iron | |
| 12 | Magnesium oxide | MgO | % | Iyer, S D | ||
| 13 | Calcium oxide | CaO | % | Iyer, S D | ||
| 14 | Sodium oxide | Na2O | % | Iyer, S D | ||
| 15 | Potassium oxide | K2O | % | Iyer, S D | ||
| 16 | Manganese oxide | MnO | % | Iyer, S D | ||
| 17 | Phosphorus pentoxide | P2O5 | % | Iyer, S D | ||
| 18 | Barium | Ba | mg/kg | Iyer, S D | ||
| 19 | Cobalt | Co | mg/kg | Iyer, S D | ||
| 20 | Chromium | Cr | mg/kg | Iyer, S D | ||
| 21 | Copper | Cu | mg/kg | Iyer, S D | ||
| 22 | Nickel | Ni | mg/kg | Iyer, S D | ||
| 23 | Yttrium | Y | mg/kg | Iyer, S D | ||
| 24 | Vanadium | V | mg/kg | Iyer, S D | ||
| 25 | Zinc | Zn | mg/kg | Iyer, S D | ||
| 26 | Zirconium | Zr | mg/kg | Iyer, S D |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
174 data points