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Desprairies, Alain; Bonnot-Courtois, Chantal; Jehanno, Celestine; Vernhet, S; Joron, Jean Louis (1984): Mineralogy and geochemistry of alteration products in DSDP Leg 81 Holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.806988, Supplement to: Desprairies, A et al. (1984): Mineralogy and geochemistry of alteration products in Leg 81 basalts. In: Roberts, DG; Schnittker, D; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 81, 733-742, https://doi.org/10.2973/dsdp.proc.81.128.1984

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Abstract:
Alteration products of basalts from the four holes drilled during Leg 81 were studied and found to be characterized by the widespread occurrence of trioctahedral clay minerals (Mg smectite to chlorite). In some cases zeolites (analcite, chabazite) are associated with the saponite. A more oxidizing stage is marked by a saponite-celadonite association, presenting the geochemical characteristics of hydrothermal processes. Later stages of alteration are represented by palagonitization and subaerial weathering at two sites. These different alteration processes of basalts from Leg 81 record the paleoenvironment during the first opening stages of the Northeast Atlantic Ocean in the Paleocene-Eocene periods.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 56.167262 * Median Longitude: -23.032400 * South-bound Latitude: 56.042700 * West-bound Longitude: -23.528200 * North-bound Latitude: 56.561700 * East-bound Longitude: -20.782200
Date/Time Start: 1981-07-31T00:00:00 * Date/Time End: 1981-08-31T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
8 datasets

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Datasets listed in this publication series

  1. Desprairies, A; Bonnot-Courtois, C; Jehanno, C et al. (1984): (Table 1) Geochemistry of iron-rich saponites and zeolites in basalt from DSDP Hole 81-552. https://doi.org/10.1594/PANGAEA.806972
  2. Desprairies, A; Bonnot-Courtois, C; Jehanno, C et al. (1984): (Table 2) Geochemistry of the basalt alteration products at DSDP Hole 81-553. https://doi.org/10.1594/PANGAEA.806973
  3. Desprairies, A; Bonnot-Courtois, C; Jehanno, C et al. (1984): (Table 3) Geochemistry of the basalt alteration products at DSDP Hole 81-553. https://doi.org/10.1594/PANGAEA.806976
  4. Desprairies, A; Bonnot-Courtois, C; Jehanno, C et al. (1984): (Table 5) Geochemistry and structural formulas of iron-rich saponite and celadonite in basalt at DSDP Hole 81-553. https://doi.org/10.1594/PANGAEA.806978
  5. Desprairies, A; Bonnot-Courtois, C; Jehanno, C et al. (1984): (Table 6) Concentration of rare earth elements and trace elements at DSDP Hole 81-553. https://doi.org/10.1594/PANGAEA.806981
  6. Desprairies, A; Bonnot-Courtois, C; Jehanno, C et al. (1984): (Table 4) delta 18O from iron-rich saponite and celadonite at DSDP Hole 81-553A. https://doi.org/10.1594/PANGAEA.806977
  7. Desprairies, A; Bonnot-Courtois, C; Jehanno, C et al. (1984): (Table 7) Geochemistry of the basalt alteration products at DSDP Hole 81-554. https://doi.org/10.1594/PANGAEA.806982
  8. Desprairies, A; Bonnot-Courtois, C; Jehanno, C et al. (1983): (Table 8) Geochemistry of basalt and tuff alteration products and structural formulas of clay minerals at DSDP Hole 81-555. https://doi.org/10.1594/PANGAEA.806986