Noack, Y; Emmermann, Rolf; Hubberten, Hans-Wolfgang (1983): Geochemistry of minerals at DSDP Holes 68-501 and 69-504B [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.816415, Supplement to: Noack, Y et al. (1983): Alteration in Site 501 (Leg 68) and Site 504 (Leg 69) basalts: preliminary results. 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, 497-508, https://doi.org/10.2973/dsdp.proc.69.125.1983
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Abstract:
The interaction of seawater with basalts in DSDP Hole 501 and the upper part of Hole 504B (Costa Rica Rift) produced oxidative alteration and a zonation of clay minerals along cracks. From rock edges to interiors in many cracks the following succession occurs, based on microscopic observations and microprobe analysis: iron hydroxides (red), "protoceladonite" (green), iddingsite (orange), and saponite (yellow). Clay minerals replace olivines and fill vesicles and cracks. Other secondary minerals are phillipsite, aragonite, and unidentified carbonates. Some glass is transformed to Mg-rich palagonite. Bulk rock chemistry is related to the composition of the secondary minerals.
The zonation can be interpreted as a succession of postburial nonoxidative and oxidative diagenesis similar to that described in the Leg 34 basalts.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Median Latitude: 1.227200 * Median Longitude: -83.730917 * South-bound Latitude: 1.227200 * West-bound Longitude: -83.734300 * North-bound Latitude: 1.227200 * East-bound Longitude: -83.730200
Date/Time Start: 1979-07-08T00:00:00 * Date/Time End: 1979-10-07T00:00:00
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)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
8 datasets
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Datasets listed in this publication series
- Noack, Y; Emmermann, R; Hubberten, H-W (1983): (Table 9) Geochemistry of fresh glass and palagonite at DSDP Holes 68-501 and 69-504B. https://doi.org/10.1594/PANGAEA.816413
- Noack, Y; Emmermann, R; Hubberten, H-W (1983): (Table 6) Geochemistry of zeolites at DSDP Holes 68-501 and 69-504B. https://doi.org/10.1594/PANGAEA.816409
- Noack, Y; Emmermann, R; Hubberten, H-W (1983): (Table 3) Clay minerals in olivines, veins and vesicles, and breccia matrix and d-spacings at DSDP Hole 69-504B. https://doi.org/10.1594/PANGAEA.816404
- Noack, Y; Emmermann, R; Hubberten, H-W (1983): (Table 8) Geochemistry of mineral tentatively identified as anhydrite at DSDP Hole 69-504B. https://doi.org/10.1594/PANGAEA.816411
- Noack, Y; Emmermann, R; Hubberten, H-W (1983): (Table 10) Geochemistry of bulk rock at DSDP Hole 69-504B. https://doi.org/10.1594/PANGAEA.816414
- Noack, Y; Emmermann, R; Hubberten, H-W (1983): (Table 7) Geochemistry of carbonates at DSDP Hole 69-504B. https://doi.org/10.1594/PANGAEA.816410
- Noack, Y; Emmermann, R; Hubberten, H-W (1983): (Table 4) Geochemistry of clay minerals in olivines at DSDP Hole 69-504B. https://doi.org/10.1594/PANGAEA.816406
- Noack, Y; Emmermann, R; Hubberten, H-W (1983): (Table 5) Geochemistry of clay minerals in veins and vesicles at DSDP Hole 69-504B. https://doi.org/10.1594/PANGAEA.816407