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  • Data  (21)
  • 1980-1984  (21)
  • 1983  (8)
  • 1982  (13)
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  • 1980-1984  (21)
Year
  • 1
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    Unknown
    PANGAEA
    In:  Supplement to: Keigwin, Lloyd D (1982): Stable isotope stratigraphy and paleoceanography of Sites 502 and 503. In: Prell, WL; Gardner, JV; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 68, 445-453, https://doi.org/10.2973/dsdp.proc.68.119.1982
    Publication Date: 2023-07-09
    Description: Analyses of stable isotopes of monospecific planktonic foraminifers (G. quadrilobatus group) and monogeneric benthic foraminifers (Cibicidoides spp.) from late Neogene Atlantic Site 502 and Pacific Site 503 were conducted in order to determine the paleoceanographic changes resulting from the late Neogene uplift of the Panama Isthmus and from climatic cooling. In general, results at each site are similar to those from previous studies for the late Miocene and late Pliocene time interval, documenting the late Miocene (6 Ma) shift in carbon isotopes and the inferred growth of permanent Northern Hemisphere continental ice sheets beginning about 3.2 Ma. Comparison of Atlantic-Pacific planktonic-benthic isotope data for four stratigraphic intervals (~6-8, ~5-6, ~3-5, and ~2-3 Ma) suggests that increasing isolation of Atlantic and Pacific low-latitude waters may be related to the emergence of the Panama Isthmus. The contrast between Atlantic and Pacific benthic foraminiferal d13C increased in two steps from 0.60 per mil to 1 per mil (the modern contrast) at about 6 Ma and 3 Ma. The first increase (0.15 per mil) may represent the end of previously limited deep-water communication between the Atlantic and Pacific at the present location of Panama. The second increase (0.25 per mil) may be due to increased production of North Atlantic Deep Water. This probably reflects the development of modern deep-sea circulation. The d18O of planktonic foraminifers begins to increase in Atlantic Site 502 at 4.2 Ma and may reflect the increasing salinity of the North Atlantic Ocean arising from diminishing surface-water exchange across Panama. This increase is clearly shown by contrasting the d18O of Atlantic and Pacific planktonic foraminifers, as well as the d18O of planktonic and benthic foraminifers at Site 502. This inferred increase in surface-water salinity begins at the time of increasing provinciality of Atlantic and Pacific planktonic foraminifers.
    Keywords: 68-502A; 68-502B; 68-502C; 68-503A; 68-503B; Caribbean Sea/RIDGE; Cibicidoides kullenbergi, δ13C; Cibicidoides kullenbergi, δ18O; Cibicidoides wuellerstorfi, δ13C; Cibicidoides wuellerstorfi, δ18O; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Elevation of event; Event label; Globigerinoides quadrilobatus, δ13C; Globigerinoides quadrilobatus, δ18O; Glomar Challenger; Latitude of event; Leg68; Longitude of event; North Pacific/FLANK; Oridorsalis tener, δ13C; Oridorsalis tener, δ18O; Sample code/label; see reference(s)
    Type: Dataset
    Format: text/tab-separated-values, 699 data points
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  • 2
    Publication Date: 2023-07-10
    Keywords: 66-487; 67-495; 67-499C; 67-499D; 67-500; 67-500B; Antimony; Barium; Caesium; Cerium; Chromium; Cobalt; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Element analysis, neutron activation (NAA); Elevation of event; Europium; Event label; Glomar Challenger; Hafnium; Iron; Lanthanum; Latitude of event; Leg66; Leg67; Longitude of event; Manganese; Nickel; Niobium; North Pacific/TRENCH; Rubidium; Sample code/label; Scandium; Strontium; Tantalum; Terbium; Thorium; Titanium; Uranium; Vanadium; X-ray fluorescence (XRF); Yttrium; Zinc; Zirconium
    Type: Dataset
    Format: text/tab-separated-values, 387 data points
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  • 3
    Publication Date: 2023-07-10
    Keywords: 60-453; 60-454A; 60-456; 60-456A; 60-457; 60-458; 60-459B; 60-460; 60-461A; Aluminium oxide; Barium; Calcium; Calcium oxide; Cerium; Chromium; Cobalt; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Element analysis, neutron activation (NAA); Elevation of event; Europium; Event label; Gallium; Glomar Challenger; Hafnium; Iron oxide, Fe2O3; Iron oxide, FeO; Lanthanum; Latitude of event; Leg60; Location; Longitude of event; Magnesium number; Magnesium oxide; Manganese oxide; Nickel; North Pacific/RIDGE; North Pacific/SEDIMENT POND; North Pacific/TRENCH; Phosphorus pentoxide; Potassium oxide; Rubidium; Sample code/label; Sample ID; Scandium; Silicon dioxide; Sodium oxide; Strontium; Tantalum; Terbium; Thorium; Titanium dioxide; Total; Uranium; X-ray fluorescence (XRF); Yttrium; Zinc; Zirconium
    Type: Dataset
    Format: text/tab-separated-values, 551 data points
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  • 4
    Publication Date: 2023-07-07
    Keywords: 65-482D; 65-483; 65-483B; 65-485A; Clinopyroxene; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Elevation of event; Event label; Glomar Challenger; Latitude of event; Leg65; Lithologic unit/sequence; Longitude of event; Minerals; North Pacific/Gulf of California/CONT RISE; North Pacific/Gulf of California/SEDIMENT POND; Olivine; Plagioclase; Rock type; Sample code/label; Sample method; see reference(s); Texture; Type; Unit; Vesicle
    Type: Dataset
    Format: text/tab-separated-values, 465 data points
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  • 5
    Publication Date: 2023-07-07
    Keywords: -; 64-477; 64-478; 64-481A; Anorthite; Clinopyroxene; Comment; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Elevation of event; Event label; Forsterite; Glomar Challenger; Latitude of event; Leg64; Liquid fraction; Longitude of event; North Pacific/Gulf of California/BASIN; North Pacific/Gulf of California/CHANNEL; Number; Olivine; Plagioclase; Sample code/label; Sample code/label 2; Spinel
    Type: Dataset
    Format: text/tab-separated-values, 276 data points
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  • 6
    Publication Date: 2023-07-07
    Keywords: -; 64-474A; 64-475B; Anorthite; Clinopyroxene; Comment; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; Forsterite; Glomar Challenger; Leg64; Liquid fraction; North Pacific/Gulf of California/BASIN; North Pacific/Gulf of California/SLOPE; Number; Olivine; Plagioclase; Sample code/label; Sample code/label 2; Spinel
    Type: Dataset
    Format: text/tab-separated-values, 220 data points
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  • 7
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    PANGAEA
    In:  Supplement to: Krishnaswami, Seth; Mangini, Augusto; Thomas, J H; Sharma, P; Cochran, J Kirk; Turekian, Karl K; Parker, P D (1982): 10Be and Th isotopes in manganese nodules and adjacent sediments: Nodule growth histories and nuclide behavior. Earth and Planetary Science Letters, 59(2), 217-234, https://doi.org/10.1016/0012-821X(82)90127-3
    Publication Date: 2023-08-28
    Description: The usefulness of cosmogenic beryllium-10 (half life = 2.5 Ma) for studying the rates of accumulation of ferromanganese nodules is reported based on its measured depth distribution in the top 20 mm of these deposits. Accumulation rates have been obtained in the range of 1 to 4 mm/Ma, which are in good agreement with rates determined using the 230Th method on the same nodules. The use of 10Be offers promise in extending the dating to the outer few cm of the nodules. This contrasts with conventional methods using 230Th and 231Pa isotopes which, due to their comparatively short half lives, are limited to a few mm at the surface of the nodules. Detailed studies of 10Be in the manganese deposits coupled with other trace element analyses should prove valuable in understanding the processes of formation of these deposits and the chronology of events recorded by them.
    Keywords: ARRH-TF; BC; Box corer; DOMES-A47-16; Dredge; DRG; Indian Ocean; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Oceanographer; Pacific Ocean; RP8OC75; RP8OC75-47-16; Vit 5186; Vityaz (ex-Mars); Vityaz-35; VITYAZ5186
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 8
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: Fuerstenau, D W; Han, K N (1983): Metallurgy and processing of marine manganese nodules. Mineral Processing and Extractive Metallurgy Review, 1(1-2), 1-83, https://doi.org/10.1080/08827508308952589
    Publication Date: 2023-08-28
    Description: This paper reviews the state of the art in processing and extraction of ocean floor manganese nodules. It briefly reviews the mining sites where the abundant rich nodules occur and also discusses the metal distribution in nodules in view of economical processing and extraction of these metal values. The paper discloses in a detailed manner the physical and chemical characteristics of nodules, including porosity, surface area, water content and the effect of temperature on crystal structure of major constituents of nodules. In the extraction aspect of nodules, the paper reviews two different extraction schemes revealed in the literature, namely hydrometallurgical treatment and pyrometallurgical treatment. The hydrometallurgical treatments include acid leaching, ammonia leaching, leaching with reducing agents and leaching after high temperature pre-treatments such as in sulfating rousting, while the pyrometallurgical processes include smelting, chlorination-vaporization and segregation. The paper also covers metal recovery processes from leach liquor. An economic survey of processing nodules has been made in terms of problems associated with metal-marketing, and impact of metal production from nodules on mineral industries.
    Keywords: 2P-50; 2P-51; 2P-52; Atomic absorption spectrometry (AAS); Cobalt; Copper; Date/Time of event; Density; DEPTH, sediment/rock; DOWNWIND-H; Dredge; DRG; DWHD16; Elevation of event; Event label; Horizon; HRS1; Iron; Latitude of event; Longitude of event; Manganese; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Pacific Ocean; Porosity; Prospector; Prospector-63; Sample ID; SAN_JUAN_1963; SNJ-DH2; Specific surface area; Spencer F. Baird; Water in rock
    Type: Dataset
    Format: text/tab-separated-values, 66 data points
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  • 9
    facet.materialart.
    Unknown
    PANGAEA
    In:  Supplement to: Pawson, D L (1982): Deep-sea echinoderms in the Tongue of the Ocean, Bahama Islands: a survey, using the research submersible Alvin. Australian Museum Memoir, 16, 129-145, https://doi.org/10.3853/j.0067-1967.16.1982.362
    Publication Date: 2023-08-28
    Description: Deep-sea echinoderms of the Tongue of the Ocean, Bahama Islands, have been studied, using trawled collections made by the University of Miami together with observations from the deep submersible Alvin. Transect runs in the submersible permitted studies of population densities and behaviour of approximately 38 species of larger invertebrates, of which 27 were echinoderms. Several echinoderm species show a patchy distribution pattern which is apparently not related to available food resources. Some species are exclusively herbivores, feeding on fragments of turtle grass, Thalassia testudinata and sargassum weed, Sargassum spp. Feeding habits of some Tongue of the Ocean echinoderms are compared with those of the same species from further north, where supplies of plant material are not nearly so abundant.
    Keywords: ALV703; ALV-703; Alvin; Comment; Deposit type; DEPTH, sediment/rock; Description; File name; Grab; GRAB; Identification; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Position; Quantity of deposit; Sediment type; Substrate type; Tongue of the Ocean; Uniform resource locator/link to image; Visual description
    Type: Dataset
    Format: text/tab-separated-values, 10 data points
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  • 10
    Publication Date: 2023-08-28
    Description: During the period of 22-28 July, 1978, five dives were made in the manned submersible ALVIN into the Atlantic Ocean 3800 meter depth radioactive waste disposal site located in the Hudson Canyon channel approximately 320 kilometers from the Maryland-Delaware coast. A geological description of the site was made by direct examination of the bottom topography, bedrock exposures, sedimentary and erosional processes, and sediment cores collected from the dumpsite area. Observations within a depth range of 3985-3830 meters revealed angular blocks and piles of displaced channel wall rock, boulder and cobble olistoliths of Eocene-age chalks derived from higher elevations on the slope, and bedforms such as ripples and scour marks which imply the existence of periodic strong currents. Local benthic fauna were sparse. Three low-level radioactive waste drums were examined from the submersible, and one was subsequently recovered for corrosion, and concrete deterioration analyses. Photographic and visual evidence suggest that downslope transport of objects such as talus blocks, olistoliths, and radioactive waste drums has occurred in this area. These observations complement those made by G. Keller in earlier ALVIN dives performed in 1972 and by the AOML(MG&GL project. COMSED (Continental Margin Sedimentary Processes) cruise performed in 1974 by the R/V Researcher.
    Keywords: AL41500; AL81300; ALV415; ALV-415; ALV813; ALV-813; Alvin; Comment; COMSED-74; Core; CORE; Deposit type; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Description; Event label; GR74-189HP; Grab; GRAB; Hudson Canyon, Atlantic Ocean; Identification; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Position; Quantity of deposit; Researcher; Sediment type; Substrate type; Visual description
    Type: Dataset
    Format: text/tab-separated-values, 29 data points
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