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Kurnosov, Victor B; Murdmaa, Ivar O; Kazakova, Vera P; Shevchenko, Alla Ya; Mikhina, Vladlena (1983): Mineralogy and inorganic geochemistry of sediments at DSDP Leg 65 Holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.817970, Supplement to: Kurnosov, VB et al. (1983): Mineralogy and inorganic geochemistry of sediments from the mouth of the Gulf of California. In: Lewis, BTR; Robinson, P; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 65, 399-424, https://doi.org/10.2973/dsdp.proc.65.114.1983

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Abstract:
During Leg 65, 15 holes were drilled at four sites located on young crust in the mouth of the Gulf of California. Quaternary to upper Pliocene hemipelagic sediments above and interlayered within the young basaltic basement were cored. The influence of hot lava, high temperature gradients, and hydrothermal activity on the mineralogy and geochemistry of the terrigenous sediments near contacts with basalts might therefore be expected.
The purpose of the present study was to determine the mineralogy and inorganic geochemistry of these sediments and to analyze the nature and extent of low temperature alteration. To this end we studied the mineralogy and inorganic geochemistry of 75 sediment samples, including those immediately overlying uppermost basalts and those from layers alternating with basalts within the basement. We separated three size fractions - <2 µm (clay), 2-20 µm (intermediate), and >20 µm (coarse) - and applied the following mineralogical determinations: x-ray diffraction (XRD), infrared spectroscopy, transmission and scanning electron microscopy, and optical microscopy (for coarse fractions, using thin sections and smear slides). We calculated the percentages of clay minerals using Biscaye's (1964) method, and used routine wet chemical analyses to determine bulk composition and quantitative spectral analyses for trace elements.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 22.889426 * Median Longitude: -108.193824 * South-bound Latitude: 22.748700 * West-bound Longitude: -108.748300 * North-bound Latitude: 23.185800 * East-bound Longitude: -107.903500
Date/Time Start: 1979-01-24T00:00:00 * Date/Time End: 1979-03-05T00:00:00
Event(s):
65-482 * Latitude: 22.789700 * Longitude: -107.993800 * Date/Time: 1979-01-24T00:00:00 * Elevation: -2998.0 m * Penetration: 4 m * Recovery: 3.9 m * Location: North Pacific/Gulf of California/CONT RISE * Campaign: Leg65 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 1 cores; 4 m cored; 0 m drilled; 98.5 % recovery
65-482A * Latitude: 22.789700 * Longitude: -107.993300 * Date/Time: 1979-01-24T00:00:00 * Elevation: -2998.0 m * Penetration: 44 m * Recovery: 18.7 m * Location: North Pacific/Gulf of California/CONT RISE * Campaign: Leg65 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 3 cores; 28.5 m cored; 0 m drilled; 65.7 % recovery
65-482B * Latitude: 22.789700 * Longitude: -107.993300 * Date/Time: 1979-01-24T00:00:00 * Elevation: -2998.0 m * Penetration: 229 m * Recovery: 99.8 m * Location: North Pacific/Gulf of California/CONT RISE * Campaign: Leg65 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 24 cores; 184.5 m cored; 0 m drilled; 54.1 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
14 datasets

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Datasets listed in this publication series

  1. Kurnosov, VB; Murdmaa, IO; Kazakova, VP et al. (1983): (Table 4) Chemical composition of sediments at DSDP Site 65-482. https://doi.org/10.1594/PANGAEA.817957
  2. Kurnosov, VB; Murdmaa, IO; Kazakova, VP et al. (1983): (Table 1) Mineralogy of sediment fraction at DSDP Site 65-482. https://doi.org/10.1594/PANGAEA.817954
  3. Kurnosov, VB; Murdmaa, IO; Kazakova, VP et al. (1983): (Table 5) Trace element composition of sediments at DSDP Site 65-482. https://doi.org/10.1594/PANGAEA.817958
  4. Kurnosov, VB; Murdmaa, IO; Kazakova, VP et al. (1983): (Table 6) Mineralogy of the 2-20 µm and clay sediment fractions at DSDP Site 65-483. https://doi.org/10.1594/PANGAEA.817961
  5. Kurnosov, VB; Murdmaa, IO; Kazakova, VP et al. (1983): (Table 7) Trace element composition of sediments at DSDP Site 65-483. https://doi.org/10.1594/PANGAEA.817962
  6. Kurnosov, VB; Murdmaa, IO; Kazakova, VP et al. (1983): (Table 9) Chemical composition of sediments at DSDP Hole 65-484A. https://doi.org/10.1594/PANGAEA.817964
  7. Kurnosov, VB; Murdmaa, IO; Kazakova, VP et al. (1983): (Table 8) Mineralogy of clay and intermediate sediment fractions at DSDP Hole 65-484A. https://doi.org/10.1594/PANGAEA.817963
  8. Kurnosov, VB; Murdmaa, IO; Kazakova, VP et al. (1983): (Table 10) Trace element composition of sediments at DSDP Hole 65-484A. https://doi.org/10.1594/PANGAEA.817965
  9. Kurnosov, VB; Murdmaa, IO; Kazakova, VP et al. (1983): (Table 13) Chemical composition of representative sediments at DSDP Holes 65-485 and 65-485A. https://doi.org/10.1594/PANGAEA.817968
  10. Kurnosov, VB; Murdmaa, IO; Kazakova, VP et al. (1983): (Table 12) The b repeat distances of clay minerals and mica polytypes in sediments at DSDP Site 65-485. https://doi.org/10.1594/PANGAEA.817967
  11. Kurnosov, VB; Murdmaa, IO; Kazakova, VP et al. (1983): (Table 11) Mineralogy of sediment fractions at DSDP Site 65-485. https://doi.org/10.1594/PANGAEA.817966
  12. Kurnosov, VB; Murdmaa, IO; Kazakova, VP et al. (1983): (Table 15) Trace element composition of sediments at DSDP Site 65-485. https://doi.org/10.1594/PANGAEA.817969
  13. Kurnosov, VB; Murdmaa, IO; Kazakova, VP et al. (1983): (Table 2) Acid dissolution test characteristics from DSDP Leg 65 Holes. https://doi.org/10.1594/PANGAEA.817955
  14. Kurnosov, VB; Murdmaa, IO; Kazakova, VP et al. (1983): (Table 3) Mineralogy of the coarse (>20 µm) sediment fraction at DSDP Leg 65 Holes. https://doi.org/10.1594/PANGAEA.817956