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Jarvis, Ian (1985): Geochemistry at DSDP Holes 85-573B and 85-574C [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.803572, Supplement to: Jarvis, I (1985): Geochemistry and origin of Eocene-Oligocene metalliferous sediments from the central equatorial Pacific: Deep Sea Drilling Project Sites 573 and 574. In: Mayer, L; Theyer, E; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 85, 871-804, https://doi.org/10.2973/dsdp.proc.85.124.1985

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Abstract:
Eocene-Oligocene metalliferous sediments and associated lithologies from the central equatorial Pacific are described in detail. Geochemical analyses of 54 sediment and 2 basalt samples are presented for 34 elements. Detailed stratigraphic and statistical analyses of these data, combined with mineralogic studies, indicate the presence of volcanic glass and seven main mineral phases: biogenic calcite and opal, Fe smectite, goethite, dMnO2, carbonate fluorapatite, and barite. Fe smectite formed by reactions between Fe oxyhydroxides and biogenic opal, causing the dissolution of calcite and the precipitation of barite. Diagenesis was oxic. Sediments have rare earth element distributions similar to those in seawater. The metal content of the sediments is related to competition between the supply rates of hydrothermal and biogenic particles, but has been enhanced by early diagenetic processes. Eocene-Oligocene metalliferous sediments compare closely to those currently being deposited in the Bauer Basin and on the flanks of the East Pacific Rise. There is, however, no evidence that they were deposited in close proximity to an active hydrothermal system.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 2.353600 * Median Longitude: -133.319850 * South-bound Latitude: 0.498500 * West-bound Longitude: -133.330200 * North-bound Latitude: 4.208700 * East-bound Longitude: -133.309500
Date/Time Start: 1982-04-02T00:00:00 * Date/Time End: 1982-04-11T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
5 datasets

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Datasets listed in this publication series

  1. Jarvis, I (1985): (Table 9) Compositional variation in the noncarbonate fraction of metalliferous sediments at DSDP Holes 85-573A and 85-574C. https://doi.org/10.1594/PANGAEA.803571
  2. Jarvis, I (1985): (Appendix D) Major and trace element composition of Tholeiitic basalts at DSDP Hole 85-573B and 85-574C. https://doi.org/10.1594/PANGAEA.803569
  3. Jarvis, I (1985): (Appendix C) Rare earth element composition of basal sediments at DSDP Holes 85-573B and 85-574C. https://doi.org/10.1594/PANGAEA.803568
  4. Jarvis, I (1985): (Appendix A) Major and trace element composition of basal sediments at DSDP Hole 85-573B. https://doi.org/10.1594/PANGAEA.803566
  5. Jarvis, I (1985): (Appendix B) Major and trace element composition of basal sediments at DSDP Hole 85-574C. https://doi.org/10.1594/PANGAEA.803567