Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Honnorez, Jose J; Karpoff, Anne Marie; Trauth-Badaut, Denise (1983): Geochemistry at DSDP Leg 70 Holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.815355, Supplement to: Honnorez, JJ et al. (1983): Sedimentology, mineralogy, and geochemistry of green clay samples from the Galapagos hydrothermal mounds, Holes 506, 506C, and 507D, Deep Sea Drilling Project Leg 70 (preliminary data). In: Honnorez, J; Von Herzen, RP; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 70, 211-224, https://doi.org/10.2973/dsdp.proc.70.109.1983

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
The hydrothermal mounds on the southern flank of the Galapagos Spreading Center are characterized by the following main features:
1) They are located over a young basement (0.5 to 0.85 m.y. of age) in a region known for its high sedimentation rate (about 5 cm/10**3 y.) because it is part of the equatorial high biological productivity zone.
2) They are located in a region with generally high heat flow (8 to 10 HFU). The highest heat-flow measurements (up to 10**3 HFU) correspond to mound peaks (Williams et al., 1979), where temperatures up to 15°C were measured during a dive of the submersible Alvin (Corliss et al., 1978).
3) They are often located on small vertical faults which displace the basement by a few meters (Lonsdale, 1977) and affect the 25- to 50-meter-thick sediment cover. Most of these characteristics have also been observed in the other three known cases of hydrothermal deposits with mineral parageneses similar to that of the Galapagos mounds. However, the case of the hydrothermal mounds south of the Galapagos Spreading Center is unique because of the unusual thickness of the hydrothermal deposits present. The mounds are composed of several, up to 4.5-meter-thick, layers of green clays which, in one case (Hole 509B), are overlain by about 1.4 meters of Mn-oxide crust. We suspect that such a large accumulation of hydrothermal products results from the "funnelling" of the hydrothermal solutions exiting from a highly permeable basement along the faults.
This chapter reports a preliminary study of those green clays collected by hydraulic piston coring of the Galapagos mounds during Deep Sea Drilling Project (DSDP) Leg 70 of the D/V Glomar Challenger.
Green clays have also been reported from three presently or recently active hydrothermal areas in or close to spreading centers.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 0.589547 * Median Longitude: -86.094660 * South-bound Latitude: 0.566700 * West-bound Longitude: -86.099800 * North-bound Latitude: 0.609800 * East-bound Longitude: -86.090000
Date/Time Start: 1979-11-15T00:00:00 * Date/Time End: 1979-11-20T00:00:00
Event(s):
70-506 * Latitude: 0.609800 * Longitude: -86.099800 * Date/Time: 1979-11-15T00:00:00 * Elevation: -2710.0 m * Penetration: 36.7 m * Recovery: 22.7 m * Location: North Pacific/MOUND * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 7 cores; 27.9 m cored; 8.8 m drilled; 81.5 % recovery
70-506C * Latitude: 0.607700 * Longitude: -86.091300 * Date/Time: 1979-11-15T00:00:00 * Elevation: -2710.0 m * Penetration: 31.3 m * Recovery: 29.7 m * Location: North Pacific/MOUND * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 8 cores; 31.3 m cored; 0 m drilled; 95 % recovery
70-507D * Latitude: 0.566700 * Longitude: -86.090000 * Date/Time: 1979-11-20T00:00:00 * Elevation: -2689.0 m * Penetration: 38.7 m * Recovery: 36.5 m * Location: North Pacific/MOUND * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 10 cores; 38.7 m cored; 0 m drilled; 94.3 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
9 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding:

Datasets listed in this publication series

  1. Honnorez, JJ; Karpoff, AM; Trauth-Badaut, D (1983): (Table 2) d-spacing (Å) of <2 µm clay fraction after air drying, glycolation, and heating at DSDP Leg 70 Holes. https://doi.org/10.1594/PANGAEA.815347
  2. Honnorez, JJ; Karpoff, AM; Trauth-Badaut, D (1983): (Table 1) Bulk sediment colour and description at DSDP Leg 70 Holes. https://doi.org/10.1594/PANGAEA.815345
  3. Honnorez, JJ; Karpoff, AM; Trauth-Badaut, D (1983): (Table 3) Geochemistry of bulk hydrothermal sediments DSDP Leg 70 Holes. https://doi.org/10.1594/PANGAEA.815348
  4. Honnorez, JJ; Karpoff, AM; Trauth-Badaut, D (1983): (Table 5) Geochemistry of the clay fraction (<2 µm) of hydrothermal sediments at DSDP Leg 70 Holes. https://doi.org/10.1594/PANGAEA.815350
  5. Honnorez, JJ; Karpoff, AM; Trauth-Badaut, D (1983): (Table 7) Recalculated geochemistry of hydrothermal sediments (bulk sediment) at DSDP Leg 70 Holes. https://doi.org/10.1594/PANGAEA.815352
  6. Honnorez, JJ; Karpoff, AM; Trauth-Badaut, D (1983): (Table 9) Structural formulas of clays established with recalculated chemical analyses of clay fraction at DSDP Leg 70 Holes, on the basis of 22 charges. https://doi.org/10.1594/PANGAEA.815354
  7. Honnorez, JJ; Karpoff, AM; Trauth-Badaut, D (1983): (Table 8) Recalculated geochemistry of clay fraction (< 2 µm) of hydrothermal sediments at DSDP Leg 70 Holes. https://doi.org/10.1594/PANGAEA.815353
  8. Honnorez, JJ; Karpoff, AM; Trauth-Badaut, D (1983): (Table 4) Trace element concentrations of bulk hydrothermal sediments at DSDP Leg 70 Holes. https://doi.org/10.1594/PANGAEA.815349
  9. Honnorez, JJ; Karpoff, AM; Trauth-Badaut, D (1983): (Table 6) Trace-element concentrations of clay fraction (< 2 µm) of the hydrothermal sediments at DSDP Leg 70 Holes. https://doi.org/10.1594/PANGAEA.815351