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

Kurnosov, Victor B; Kholodkevich, Igor V; Chubarov, Valerii M; Shevchenko, Alla Ya (1983): Secondary minerals and geochemistry at DSDP Legs 68 and 69 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.816462, Supplement to: Kurnosov, VB et al. (1983): Secondary minerals in basalt from the Costa Rica Rift, Holes 501 and 504B, Deep Sea Drilling Project Legs 68, 69, and 70. In: Cann, JR; Langseth, MG; Honnorez, J; Von Herzen, RP; White, SM; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 69, 573-583, https://doi.org/10.2973/dsdp.proc.69.130.1983

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

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
Basalt samples recovered during DSDP Legs 68, 69, and 70 from a 550-meter-thick section in two holes near the Costa Rica Rift (Holes 501 and 504B) were found to contain the following secondary minerals: trioctahedral and dioctahedral smectite, chlorite, mixed-layer clays, talc, hematite, pyrite, foujasite, phillipsite, analcime, natrolite, thomsonite, gyrolite, aragonite, calcite, anhydrite, chalcocite, Fe-hydrosilicate, okenite, apophyllite, actinolite, cristobalite, quartz, and magnesite. A less positive identification of bismutite was made. A mineral rich in Mn and minerals with strong reflections at 12.9 Å and 3.20 Å remain unidentified.
Trioctahedral smectite replaces glass and olivine in the basalt groundmass. The other secondary minerals occur in veins. The distribution of the secondary minerals in the basalt section shows both hydrothermal and oxidizing-nonoxidizing zonation.
Most of the secondary minerals formed under alkaline, nonoxidizing conditions at temperatures up to 120° C. An acidic regime probably existed in the lowest portion of basalt. Oxidative diagenesis followed nonoxidative diagenesis in the upper part of the section. Oxidative diagenesis is characterized by the absence of celadonite, rare occurrences of dioctahedral smectite, and widespread hematite and phillipsite.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 1.263048 * Median Longitude: -83.734717 * South-bound Latitude: 1.227000 * West-bound Longitude: -83.788300 * North-bound Latitude: 1.920000 * East-bound Longitude: -83.730000
Date/Time Start: 1979-07-08T00:00:00 * Date/Time End: 1979-12-04T00:00:00
Event(s):
68-501 * Latitude: 1.227200 * Longitude: -83.734300 * Date/Time: 1979-07-08T00:00:00 * Elevation: -3457.0 m * Penetration: 337.1 m * Recovery: 70.5 m * Location: North Pacific/FLANK * Campaign: Leg68 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 19 cores; 137.7 m cored; 0.5 m drilled; 51.2 % recovery
69-504B * Latitude: 1.227200 * Longitude: -83.730200 * Date/Time: 1979-10-07T00:00:00 * Elevation: -3460.0 m * Penetration: 489 m * Recovery: 262 m * Campaign: Leg69 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL)
69-505B * Latitude: 1.920000 * Longitude: -83.788300 * Date/Time: 1979-09-29T00:00:00 * Elevation: -3507.0 m * Penetration: 178 m * Recovery: 6.8 m * Location: North Pacific/GRABEN * Campaign: Leg69 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 6 cores; 42 m cored; 0 m drilled; 16.3 % 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. Kurnosov, VB; Kholodkevich, IV; Chubarov, VM et al. (1983): (Table 5) Chemical composition of clay minerals from veins of basalt, Costa Rica Rift, DSDP Holes 68-501, 69-504B and 70-504B. https://doi.org/10.1594/PANGAEA.816457
  2. Kurnosov, VB; Kholodkevich, IV; Chubarov, VM et al. (1983): (Table 1) Occurrence of secondary minerals in basalt groundmass from Costa Rica Rift at DSDP Holes 68-501, 69-504B and 70-504B. https://doi.org/10.1594/PANGAEA.816453
  3. Kurnosov, VB; Kholodkevich, IV; Chubarov, VM et al. (1983): (Table 3) Occurrence of secondary minerals in in veins and vesicles of basalts from Costa Rica Rift at DSDP Holes 68-501, 69-504B and 70-504B. https://doi.org/10.1594/PANGAEA.816455
  4. Kurnosov, VB; Kholodkevich, IV; Chubarov, VM et al. (1983): (Table 9) Chemical composition of vein iron mineral from basalt of Costa Rica Rift, DSDP Sample 68-501-15-1,109-111. https://doi.org/10.1594/PANGAEA.816461
  5. Kurnosov, VB; Kholodkevich, IV; Chubarov, VM et al. (1983): (Table 6, page 577) Chemical composition of Mn-rich mineral deposit from basalt of Costa Rica Rift, Site 501, DSDP Leg 68. https://doi.org/10.1594/PANGAEA.816458
  6. Kurnosov, VB; Kholodkevich, IV; Chubarov, VM et al. (1983): (Table 8) Chemical composition of vein minerals from basalts of Costa Rica Rift, DSDP Holes 68-504B and 70-504B. https://doi.org/10.1594/PANGAEA.816460
  7. Kurnosov, VB; Kholodkevich, IV; Chubarov, VM et al. (1983): (Table 4) Chemical composition of saponites from clay veins of basalts from DSDP Holes 69-504B and 70-504B. https://doi.org/10.1594/PANGAEA.816456
  8. Kurnosov, VB; Kholodkevich, IV; Chubarov, VM et al. (1983): (Table 2) Wet chemical composition of saponites from the <1 μm fraction of basalt from DSDP Holes 69-504B and 70-504B. https://doi.org/10.1594/PANGAEA.816454
  9. Kurnosov, VB; Kholodkevich, IV; Chubarov, VM et al. (1983): (Table 7) Chemical composition of vein minerals from basalts of Costa Rica Rift, DSDP Holes 70-504B, 69-505B and 68-501. https://doi.org/10.1594/PANGAEA.816459