/* DATA DESCRIPTION: Citation: Iyer, S D; Mukhopadhyay, R; Popko, D C (2007): Major and trace element composition in the Central Indian Ocean Basin ferrobasalts (Table 2, 3). 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 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): CIOB * LATITUDE START: -11.000000 * LONGITUDE START: 76.000000 * LATITUDE END: -13.000000 * LONGITUDE END: 78.000000 * ELEVATION START: -4900.0 m * ELEVATION END: -5500.0 m * LOCATION: Indian Ocean * METHOD/DEVICE: Dredge (DRG) Comment: Whole rock chemistry of the ferrobasalts was determined through XRF and ICP-AES Parameter(s): LATITUDE (Latitude) * GEOCODE LONGITUDE (Longitude) * GEOCODE DEPTH, sediment/rock [m] (Depth sed) * GEOCODE Depth, bathymetric [m] (Bathy depth) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Sample code/label (Sample label) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Sample comment (Sample comment) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Lithology/composition/facies (Lithology) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Silicon dioxide [%] (SiO2) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Titanium dioxide [%] (TiO2) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Aluminium oxide [%] (Al2O3) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Iron oxide, FeO [%] (FeO) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) * COMMENT: total iron Magnesium oxide [%] (MgO) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Calcium oxide [%] (CaO) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Sodium oxide [%] (Na2O) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Potassium oxide [%] (K2O) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Manganese oxide [%] (MnO) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Phosphorus pentoxide [%] (P2O5) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Barium [mg/kg] (Ba) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Cobalt [mg/kg] (Co) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Chromium [mg/kg] (Cr) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Copper [mg/kg] (Cu) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Nickel [mg/kg] (Ni) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Yttrium [mg/kg] (Y) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Vanadium [mg/kg] (V) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Zinc [mg/kg] (Zn) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) Zirconium [mg/kg] (Zr) * PI: Iyer, S D (https://orcid.org/0000-0001-7744-3027) License: Creative Commons Attribution 3.0 Unported (CC-BY-3.0) (URI: https://creativecommons.org/licenses/by/3.0/) Size: 174 data points */ Latitude Longitude Depth sed [m] Bathy depth [m] Sample label Sample comment Lithology SiO2 [%] TiO2 [%] Al2O3 [%] FeO [%] MgO [%] CaO [%] Na2O [%] K2O [%] MnO [%] P2O5 [%] Ba [mg/kg] Co [mg/kg] Cr [mg/kg] Cu [mg/kg] Ni [mg/kg] Y [mg/kg] V [mg/kg] Zn [mg/kg] 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