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
Always quote citation above when using data! You can download the citation in several formats below.
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
Data
| 1 Latitude | 2 Longitude | 3 Depth sed [m] | 4 Bathy depth [m] | 5 Sample label | 6 Sample comment | 7 Lithology | 8 SiO2 [%] | 9 TiO2 [%] | 10 Al2O3 [%] | 11 FeO [%] | 12 MgO [%] | 13 CaO [%] | 14 Na2O [%] | 15 K2O [%] | 16 MnO [%] | 17 P2O5 [%] | 18 Ba [mg/kg] | 19 Co [mg/kg] | 20 Cr [mg/kg] | 21 Cu [mg/kg] | 22 Ni [mg/kg] | 23 Y [mg/kg] | 24 V [mg/kg] | 25 Zn [mg/kg] | 26 Zr [mg/kg] |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| -13 | 78 | 0 | 5040 | Sector II-6 | Abyssal plains | Plagioclase, palagonite, opaques, FeMn oxides; medium grained | 45.87 | 1.80 | 16.89 | 13.95 | 5.71 | 10.14 | 3.03 | 0.78 | 0.27 | 53.1 | 65.7 | 138.3 | 69.4 | 201.9 | 59.6 | 342.1 | 270.7 | 192.2 | |
| -13 | 76 | 0 | 5400 | Sector II-17 | Abyssal plain + seamounts (200-1200 m) | Plagioclase, altered olivine, hematite; sheaf-like | 49.43 | 2.00 | 17.84 | 13.40 | 3.02 | 8.84 | 3.19 | 1.07 | 0.24 | 0.23 | |||||||||
| -13 | 76 | 0 | 4900 | Sector II-37 | Seamount regime, E_W lineaments, near trace of the Triple Junction of the Indian Plate | Plagioclase dominant, opaques, palagonite; fine grain, altered | 51.67 | 2.10 | 16.49 | 11.92 | 2.84 | 9.05 | 3.51 | 0.79 | 0.27 | 0.30 | 61.8 | 81.1 | 151.8 | 104.0 | 78.1 | 59.6 | 317.4 | 168.6 | 181.3 |
| -13 | 77 | 0 | 5210 | Sector II-2 | Seamount cluster (100-800 m height) | Plagioclase dominant, olivine rare, opaques, hyalopilitic, trachytic | 47.08 | 2.12 | 17.33 | 17.09 | 1.76 | 8.27 | 3.60 | 0.51 | 0.15 | 0.19 | |||||||||
| -13 | 77 | 0 | 5200 | Sector II-26 | Seamount cluster (100-800 m) | Plagioclase, few olivine, FeMn oxides, trachytic | 49.64 | 1.93 | 16.34 | 12.92 | 3.41 | 8.50 | 3.42 | 1.64 | 0.31 | 0.45 | 68.4 | 67.5 | 86.7 | 140.4 | 63.5 | 56.9 | 352.1 | 204.5 | 190.9 |
| -12 | 76 | 0 | 5400 | Sector II-50 | Abyssal plain, 17-35 km from nearest seamount | Plagioclase dominant, olivine, opaques; intergranular, altered | 48.83 | 2.01 | 17.09 | 13.45 | 3.55 | 9.50 | 3.50 | 0.88 | 0.20 | 0.24 | |||||||||
| -11 | 78 | 0 | 5400 | Sector I-30 | Abyssal plain, near magnetic anomaly A25 at seamount base | Glass unaltered, plagioclase, pyroxene; intersertal | 47.68 | 2.54 | 14.98 | 15.11 | 6.14 | 9.25 | 1.94 | 0.97 | 0.24 | 0.18 | |||||||||
| -11 | 78 | 0 | 5300 | Sector I-40 | Near magnetic anomaly A25, abyssal plain, away from seamount | Plagioclase, palagonite, FeMn coating; sheaf-like, slightly altered | 43.37 | 2.76 | 14.37 | 19.13 | 3.50 | 7.84 | 3.97 | 0.96 | 1.97 | ||||||||||
| -11 | 78 | 0 | 5250 | Sector I-16 | Foothill and slope of a large seamount | Plagioclase laths dominant, less olivine, and opaques; sheaf-like, altered | 45.49 | 2.99 | 15.01 | 16.22 | 4.17 | 10.20 | 2.67 | 0.47 | 0.39 | 0.58 | 54.9 | 77.4 | 96.8 | 143.5 | 122.1 | 64.4 | 471.3 | 111.6 | 201.0 |
| -11 | 78 | 0 | 5300 | Sector I-28 | Near magnetic anomaly A5 at foothill of a seamount | Slightly altered plagioclase, palagonite; sheaf-like | 48.47 | 2.54 | 15.77 | 15.58 | 3.44 | 9.13 | 2.98 | 0.84 | 0.25 | 0.30 |