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  • PANGAEA
  • 1975-1979  (4)
  • 1977  (4)
Collection
Keywords
Publisher
Years
  • 1975-1979  (4)
Year
  • 1
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    Unknown
    Annotated record of the detailed examination of Mn deposits observed by the ALVIN submersible over the Mid-Atlantic Ridge and the New England Seamounts (1977)
    PANGAEA
    In:  Supplement to: Heirtzler, James R; Taylor, P T; Ballard, R D; Houghton, R L (1977): A Visit to the New England Seamounts: Seamounts, one of the largest topographic features of the ocean floor are largely volcanic, yet their origin is obscure. American Scientist, 65(4), 466-472, http://www.jstor.org/stable/27847969
    Details
    Publication Date: 2023-08-28
    Description: In the summer of 1974, upon returning to Woods Hole from the Azores, the submersible Alvin had the opportunity to make brief dives on Corner Rise and the New England seamount chain. This was the first time man had directly viewed the expanse of the Earth between the Mid-Atlantic Ridge and the North of the American continent. Single dives were made on seven seamounts: Corner Rise and Nashville, Gilliss, Rehoboth, Manning, Balanus, and Mytilus.
    Keywords: ALV-518; ALV-519; ALV-520; ALV-521; ALV-522; ALV-523; ALV-524; ALV-525; ALV-526; ALV-527; ALV-528; ALV-529; ALV-530; ALV-532; ALV-533; ALV-534; ALV-537; ALV-538; ALV-539; ALV-540; ALV-541; ALV-542; ALV-543; ALV74; Alvin; Atlantic Ocean; Deposit type; DEPTH, sediment/rock; Description; Elevation of event; Event label; Grab; GRAB; Identification; Latitude of event; Longitude of event; Method/Device of event; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Position; Quantity of deposit; Sediment type; Substrate type; Visual description
    Type: Dataset
    Format: text/tab-separated-values, 161 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 2
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    Unknown
    Annotated record of the detailed examination of Mn deposits from DSDP Leg 39 (Holes 354, 355, 356, 358, 359) (1977)
    PANGAEA
    In:  Supplement to: Perch-Nielsen, Katharina; Supko, Peter R; Boersma, Anne; Bonatti, Enrico; Carlson, Richard L; McCoy, Floyd W; Neprochnov, Yuri P; Zimmerman, H B (1977): Initial Reports of the Deep Sea Drilling Project. U. S. Government Printing Office, XXXIX, 1139 pp, https://doi.org/10.2973/dsdp.proc.39.1977
    Details
    Publication Date: 2023-08-28
    Description: Unlike most previous Deep Sea Drilling Project cruises, Leg 39 was not scientifically planned as a "theme" cruise, on which a number of sites are drilled to address a single scientific problem area, namely, to improve our knowledge of paleocirculation changes and the overall geologic history of the South Atlantic Ocean. This would be done along more specific objectives: 1) collect a biostratigraphic section on the Ceará Rise (Site 354), determine the nature and age of a prominent reflector there, and determine the nature and age of basement; 2) date basement between magnetic anomalies 32 and 33 in the Argentine Basin (Site 358), and 33 and 34 in the Brazil Basin (Site 355); obtain as complete sedimentary sections as time would permit at the Ceará Rise, Brazil Basin, the Argentine Basin and Sào Paulo Plateau (Site 356).
    Keywords: 39-354; 39-355; 39-356; 39-358; 39-359; Comment; Deep Sea Drilling Project; Deposit type; DEPTH, sediment/rock; Description; DRILL; Drilling/drill rig; DSDP; Event label; File name; Glomar Challenger; Identification; Leg39; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; North Atlantic/CONT RISE; Position; Quantity of deposit; Sample code/label; Sediment type; South Atlantic/BASIN; South Atlantic/PLATEAU; South Atlantic/SEAMOUNT; Substrate type; Uniform resource locator/link to image; Visual description
    Type: Dataset
    Format: text/tab-separated-values, 195 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 3
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    Unknown
    Nd- and Sr- isotope ratios of oceanic basalts (1977)
    PANGAEA
    In:  Supplement to: O'Nions, R K; Hamilton, P J; Evensen, N M (1977): Variations in 143Nd/144Nd and 87Sr/86Sr ratios in oceanic basalts. Earth and Planetary Science Letters, 34(1), 13-22, https://doi.org/10.1016/0012-821X(77)90100-5
    Details
    Publication Date: 2024-05-15
    Description: 143Nd/144Nd ratios have been determined on 37 samples of oceanic basalt, with a typical precision of +/- 2-3 * 10**-5 (2 sigma). Ocean island and dredged and cored submarine basalts are included for which reliable measurements of 87Sr/86Sr ratios exist in the literature or have been measured as part of this study. A strong negative correlation exists between 143Nd/144Nd and 87Sr/86Sr ratios in basalts from Iceland and the Reykjanes Ridge, but such a clear correlation does not exist for samples from the Hawaiian Islands. However, when other ocean island basalts from the Atlantic are included there is an overall correlation between these two parameters. Increases and decreases in Rb/Sr in oceanic basalt source regions have in general been accompanied by decreases and increases respectively in Sm/Nd ratios. The compatibility of the data with single-stage models is assessed and it is concluded that enrichment and depletion events, which are consistent with transfer of silicate melts, are responsible for the observed variation.
    Keywords: 37-332A; 37-332B; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg37; North Atlantic/VALLEY
    Type: Dataset
    Format: application/zip, 3 datasets
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 4
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    Unknown
    (Table 3) Sr and Nd-isotope ratios of oceanic basalts from DSDP Site 37-332 (1977)
    PANGAEA
    Details
    Publication Date: 2024-05-15
    Keywords: -; 37-332A; 37-332B; Calculated; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; Glomar Challenger; Isotope ratio mass spectrometry; Leg37; Neodymium-143/Neodymium-144 ratio; Neodymium-143/Neodymium-144 ratio, error; North Atlantic/VALLEY; Samarium-147/Neodymium-144 ratio; Sample code/label; Strontium-87/Strontium-86 ratio; Strontium-87/Strontium-86 ratio, error
    Type: Dataset
    Format: text/tab-separated-values, 36 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
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