(Table T1) Geochemical composition of gabbroic rocks from ODP Hole 176-735B

DOI

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.

Sediment depth is given in mbsf. More geochemical data on Hole 176-735B can be found in Tables 1-2 of Holm et al. (2002, doi:10.1016/S0009-2541(01)00364-3) dataset: doi:10.1594/PANGAEA.705251.

Supplement to: Holm, Paul Martin (2002): Data report: On the composition of the lower ocean crust-major and trace element analyses of gabbroic rocks from Hole 735B, 500-1500 mbsf. In: Natland, JH; Dick, HJB; Miller, DJ; Von Herzen, RP (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 176, 1-13

Identifier
DOI https://doi.org/10.1594/PANGAEA.787387
Related Identifier https://doi.org/10.2973/odp.proc.sr.176.020.2002
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.787387
Provenance
Creator Holm, Paul Martin ORCID logo
Publisher PANGAEA
Publication Year 2002
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 2423 data points
Discipline Earth System Research
Spatial Coverage (57.266 LON, -32.723 LAT); Indian Ocean
Temporal Coverage Begin 1997-10-24T13:45:00Z
Temporal Coverage End 1997-12-01T19:00:00Z