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  • PANGAEA  (3)
  • The Oceanography Society
  • 1980-1984  (3)
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  • 1
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    (Table 4) Calcite geochemical compositions at DSDP Hole 63-471 (1981)
    PANGAEA
    Details
    Publication Date: 2023-08-28
    Description: The sulfide deposit at Site 471 occurs between overlying pelagic sediment and underlying basalt. The deposit is vertically zoned and consists, from top to bottom, of the following mineral assemblages: (1) pyrite, chalcopyrite, and Zn-sulfide in chert and calcite gangue (~ 35 cm thick); (2) a 5-cm-thick metalliferous sediment layer and (3) a 4-cm-thick chert layer. The calcite gangue appears at a later stage than chert gangue in the sequence of deposition, also filling in voids and fractures. The manganese content of calcite is particularly high and varies systematically, reaching a maximum at the top of the massive sulfide portion of the deposit.
    Keywords: 63-471; Aluminium oxide; Aluminium oxide, standard deviation; Calcium oxide; Calcium oxide, standard deviation; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Electron microprobe (EMP); Glomar Challenger; Iron oxide, FeO; Iron oxide, FeO, standard deviation; Leg63; Magnesium oxide; Magnesium oxide, standard deviation; Manganese oxide; Manganese oxide, standard deviation; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; North Pacific/FAN; Potassium oxide; Potassium oxide, standard deviation; Replicates; Sample code/label; Silicon dioxide; Sodium oxide; Sodium oxide, standard deviation; Standard deviation; Titanium dioxide; Total
    Type: Dataset
    Format: text/tab-separated-values, 102 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    Unknown
    Chemistry of the massive sulfide deposit at DSDP Hole 63-471 (1981)
    PANGAEA
    In:  Supplement to: Devine, Joseph D; Leinen, Margaret W (1981): Chemistry of the massive sulfide deposit Cored at Site 471. In: Yeats, RS; Haq, BU; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 63, 679-686, https://doi.org/10.2973/dsdp.proc.63.124.1981
    Details
    Publication Date: 2023-08-28
    Description: We report here chemical analyses of sulfide and other minerals occurring in the massive sulfide deposit cored at Site 471. Details of the mineralogy and inferred paragenesis of the deposit will be reported elsewhere. The sulfide deposit at Site 471 occurs between overlying pelagic sediment and underlying basalt. The deposit is vertically zoned and consists, from top to bottom, of the following mineral assemblages: (1) pyrite, chalcopyrite, and Zn-sulfide in chert and calcite gangue (about 35 cm thick); (2) a 5-cm-thick metalliferous sediment layer described in detail by Leinen (this volume); and (3) a 4-cm-thick chert layer. The overlying sediment is a calcareous silty claystone that contains middle Miocene coccoliths (Bukry, this volume). The underlying basalt has been extensively chloritized and veined with calcite. In places feldspars are albitized, and calcite occurs as pseudomorphs after olivine. Relict textures suggest that the basalt grades into diabase and gabbro with increasing depth. Neither stock work nor disseminated sulfides was observed in the altered rocks.
    Keywords: 63-471; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg63; North Pacific/FAN
    Type: Dataset
    Format: application/zip, 5 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    Unknown
    (Table 1) Sediment descriptions and age at DSDP Legs 5 and 63 Holes (1981)
    PANGAEA
    In:  Supplement to: Leinen, Margaret W (1981): Metal-rich basal sediments from northeastern Pacific Deep Sea Drilling Project Sites. In: Yeats, RS; Haq, BU; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 63, 667-676, https://doi.org/10.2973/dsdp.proc.63.123.1981
    Details
    Publication Date: 2024-07-01
    Description: Sediments from immediately above basalt basement and from between sections of basalt recovered from Deep Sea Drilling Project Legs 5 and 63 were analyzed by atomic absorption spectroscopy for Mg, Al, Si, Ca, Mn, Fe, Co, Ni, Cu, Zn, and Ba. All of these sediments showed enrichment in Fe and Mn over values typical of detritus supplied to the northeastern Pacific Ocean. X-ray diffractometry and differential chemical leaching indicate that up to 50% of the sediment, by weight, is in amorphous phases and that these phases are rich in Mn, Co, Cu, Ni, and Zn. Multivariate statistical analysis and normative partitioning of the chemical data indicate that much of the excess Fe and other transition elements in the sediment originate from hydrothermal sources.
    Keywords: 5-32; 5-36; 5-37; 5-38; 5-39; 63-469; 63-470A; 63-471; 63-472; AGE; Age, maximum/old; Age, minimum/young; Deep Sea Drilling Project; Description; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Elevation of event; Event label; Glomar Challenger; Latitude of event; Leg5; Leg63; Longitude of event; North Pacific/ABYSSAL FLOOR; North Pacific/ESCARPMENT; North Pacific/FAN; North Pacific/HILL; North Pacific/PLAIN; North Pacific/PLATEAU; North Pacific/RIDGE; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 46 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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