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Bibliographic Details
Main Author: Holm, Paul Martin
Format: Dataset Open Access
Language:en
Published: PANGAEA 2002
Subjects:
176-735B; Aluminium oxide; Barium; Calcium number; Calcium oxide; Calculated; Cerium; Chromium; Cobalt; Copper; DEPTH, sediment/rock; Description; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Elements, total; Flame photometry; Gallium; Grain size description; Indian Ocean; Interval number; Iron oxide, Fe2O3; Iron oxide, FeO; Joides Resolution; Lanthanum; Lead; Leg176; Lithologic unit/sequence; Magnesium number; Magnesium oxide; Manganese oxide; Minerals; Neodymium; Nickel; Niobium; Ocean Drilling Program; ODP; Phosphorus pentoxide; Piece; Potassium oxide; Ratio; Rock type; Rubidium; Sample code/label; Scandium; Silicon dioxide; Sodium oxide; Strontium; Titanium dioxide; Vanadium; Volatiles; X-ray fluorescence (XRF); Yttrium; Zinc; Zirconium
Online Access:https://doi.org/10.1594/PANGAEA.787387
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Table of Contents:
  • Elemental data for 89 whole-rock samples from Hole 735B, 500-1500 meters below seafloor (Ocean Drilling Program Leg 176), are presented. The samples represent the rock types recovered. The data set is compared to shipboard analyses. The index Na/(Na + Al) is used to monitor magmatic evolution. Oxide-rich rocks are enriched in the albite component and are thus derived from relatively evolved melts. Not all evolved magmas precipitated Fe-Ti oxide. The geochemistry of most rocks is largely controlled by the proportion of cumulus clinopyroxene and plagioclase. The primitive magmas had Zr/Nb < 60, Sr = 0.100 ppm, and Sc = 0.35 ppm. All oxide-rich rocks are found to be mixtures of primitive and evolved mineral parageneses, and this supports the concept that Fe-Ti oxide-rich magmas percolated through olivine gabbros.

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