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  • 1
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    (Table 1) Microprobe analyses of DSDP Leg 77 volcanic glass fragments
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 77-536; 77-540; Aluminium oxide; Calcium oxide; Chromium(III) oxide; Copper; Deep Sea Drilling Project; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Event label; Glomar Challenger; Gulf of Mexico; Gulf of Mexico/SLOPE; Iron oxide, FeO; Leg77; Magnesium oxide; Manganese oxide; Nickel oxide; Potassium oxide; Sample code/label; Silicon dioxide; Sodium oxide; Sulfur, total; Sum; Titanium dioxide
    Type: Dataset
    Format: text/tab-separated-values, 46 data points
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  • 2
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    (Supplement) Iridium contents in sediments at DSDP Site 77-536
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 77-536; Calculated; Deep Sea Drilling Project; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Element analysis, neutron activation (NAA); Glomar Challenger; Gulf of Mexico/SLOPE; Iridium; Leg77; Lithologic unit/sequence; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 102 data points
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  • 3
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    (Supplement) Iridium contents in sediments at DSDP Site 77-540
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 77-540; Calculated; Deep Sea Drilling Project; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Element analysis, neutron activation (NAA); Glomar Challenger; Gulf of Mexico; Iridium; Leg77; Lithologic unit/sequence; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 186 data points
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  • 4
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    Iridium contents and microprobe analyses of DSDP Leg 77 samples
    PANGAEA
    In:  Supplement to: Alvarez, Walter; Smit, Jan; Lowrie, William; Asaro, Frank; Margolis, Stanley V; Claeys, Philippe; Kastner, Miriam; Hildebrand, Alan R (1992): Proximal impact deposits at the Cretaceous-Tertiary boundary in the Gulf of Mexico: A restudy of DSDP Leg 77 Sites 536 and 540. Geology, 20(8), 697-700, https://doi.org/10.1130/0091-7613(1992)020%3C0697:PIDATC%3E2.3.CO;2
    Details
    Publication Date: 2023-06-27
    Description: Restudy of Deep Sea Drilling Project Sites 536 and 540 in the southeast Gulf of Mexico gives evidence for a giant wave at Cretaceous-Tertiary boundary time. Five units are recognized: (1) Cenomanian limestone underlies a hiatus in which the five highest Cretaceous stages are missing, possibly because of catastrophic K-T erosion. (2) Pebbly mudstone, 45 m thick, represents a submarine landslide possibly of K-T age. (3) Current-bedded sandstone, more than 2.5 m thick, contains anomalous iridium, tektite glass, and shocked quartz; it is interpreted as ejecta from a nearby impact crater, reworked on the deep-sea floor by the resulting tsunami. (4) A 50-cm interval of calcareous mudstone containing small Cretaceous planktic foraminifera and the Ir peak is interpreted as the silt-size fraction of the Cretaceous material suspended by the impact-generated wave. (5) Calcareous mudstone with basal Tertiary forams and the uppermost tail of the Ir anomaly overlies the disturbed interval, dating the impact and wave event as K-T boundary age. Like Beloc in Haiti and Mimbral in Mexico, Sites 536 and 540 are consistent with a large K-T age impact at the nearby Chicxulub crater.
    Keywords: 77-536; 77-540; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Gulf of Mexico; Gulf of Mexico/SLOPE; Leg77
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 5
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    Annotated record of the detailed examination of Mn deposits from DSDP Leg 29 (Holes 275, 276, 277, 278, 280, 280A, 281, 282, 283, 283A, 284) (1975)
    PANGAEA
    In:  Supplement to: Margolis, Stanley V (1975): Manganese Deposits Encountered during Deep Sea Drilling Project, Leg 29, in Subantarctic Waters. In: Kennett, J.P.; Houtz, R.E.; et al., Initial Reports of the Deep Sea Drilling Project, Initial Reports of the Deep Sea Drilling Project, U.S. Government Printing Office, XXIX, 1083-1091, https://doi.org/10.2973/dsdp.proc.29.135.1975
    Details
    Publication Date: 2023-08-28
    Description: Manganese nodules, micronodules, and crusts were encountered in surface sediments, and at depth, in 6 of the 10 sites drilled during DSDP Leg 29 south of New Zealand and Tasmania. Major concentrations of surface nodule pavements occur on and adjacent to the Campbell Plateau south of New Zealand, south of the Tasman Rise, and in the South Tasman Sea. These deposits are found on top of erosional unconformities, which span tens of millions of years and reflect scouring by strong bottom currents. Micronodules were also found at depth throughout most of these cores. Their occurrence apparently is dependent upon a number of environmental factors.
    Keywords: 29-275; 29-276; 29-277; 29-278; 29-280; 29-280A; 29-281; 29-282; 29-283; 29-283A; 29-284; Antarctic Ocean; Antarctic Ocean/BASIN; Antarctic Ocean/CONT RISE; Antarctic Ocean/PLATEAU; Antarctic Ocean/Tasman Sea; Antarctic Ocean/Tasman Sea/CONT RISE; Antarctic Ocean/Tasman Sea/PLATEAU; Comment; Deep Sea Drilling Project; Deposit type; DEPTH, sediment/rock; Description; DRILL; Drilling/drill rig; DSDP; Elevation of event; Event label; Glomar Challenger; Identification; Latitude of event; Leg29; Longitude of event; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Position; Quantity of deposit; Sample code/label; Sediment type; Size; Substrate type; Visual description
    Type: Dataset
    Format: text/tab-separated-values, 437 data points
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  • 6
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    Annotated record of the detailed examination of a Mn components of Core 16 recovered during R/V Eltanin Cruise 36 (1973)
    PANGAEA
    In:  Supplement to: Margolis, Stanley V; Glasby, Geoffrey P (1973): Micro-laminations in marine manganese nodules as revealed by scanning electron microscopy. In: Phase I Report - Inter-University Program of Research on Ferromanganese Deposits of the Ocean Floor. Seabed Assessment Program, IDOE, NSF, Washington D.C., USA, pdf 500 kB, 77-83, https://store.pangaea.de/Projects/NOAA-MMS/Margolis_1973_IDOE.pdf
    Details
    Publication Date: 2023-08-28
    Description: Manganese nodules and micronodules from a series of deep-sea and shelf environments displaying a range of morphological features were selected for detailed examination by scanning electron microscopy (SEM). A summary of the morphological and petrographic characteristics of these nodules are presented. They are representative of areas in the Philippine Sea, the Tasman Sea and the Indian-Antarctic Ridge.
    Keywords: Comment; Deposit type; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; Description; ELT36; ELT36.016-PC; Eltanin; File name; Identification; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; PC; Piston corer; Position; Quantity of deposit; Sediment type; Southern Ocean; Uniform resource locator/link to image; Visual description
    Type: Dataset
    Format: text/tab-separated-values, 11 data points
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  • 7
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    Geochemistry on manganese nodules from Timor (1978)
    PANGAEA
    In:  Supplement to: Margolis, Stanley V; Ku, Teh-Lung; Glasby, Geoffrey P; Fein, J S; Audley-Charles, M G (1978): Fossil manganese nodules from Timor: Geochemical and radiochemical evidence for deep-sea origin. Chemical Geology, 21(3-4), 185-198, https://doi.org/10.1016/0009-2541(78)90044-X
    Details
    Publication Date: 2023-08-28
    Description: Fossil Mn nodules of Cretaceous age from western Timor exhibit chemical, structural and radioisotope compositions consistent with their being of deep-sea origin. These nodules show characteristics similar to nodules now found at depths of 3,500-5,000 m in the Pacific and Indian Oceans. Slight differences in the fine structure and chemistry of these nodules and modern deep-sea nodules are attributed to diagenetic alteration after uplift of enclosing sediments.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Noil_Tobee_M; Noni river, Timor
    Type: Dataset
    Format: application/zip, 4 datasets
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  • 8
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    Electron microprobe analysis of selected manganese nodules from the Southwestern Pacific Basin (2023)
    PANGAEA
    Details
    Publication Date: 2023-08-28
    Description: Four manganese nodules collected south and southwest of Rarotonga one of the Cook Islands were subjected to microprobe analysis in order to determine variations in chemical composition between the concentric laminations making up the nodules. Nodules of maximum diameter of about 2.5 cm or less were selected so that the entire nodule could be sectioned for one probe mount. Probe mounts were prepared by vacuum embedding in cold-setting, clear-casting resin. Cutting and polishing were then performed using standard polished section techniques. The electron microprobe mounts were examined with a reflected light microscope in the microprobe, and 2 micrometer spots were selected for analysis along a line of traverse going through the centre (nucleus) of the nodule. Due to the fact that optically-reflective metal-rich layers were selected for analysis and darker detrital inclusions and silicate-rich layers were not analysed here the microprobe values are generally higher for Mn, Ni, Cu and Co, and lower for Fe, than the bulk chemical analyses.
    Keywords: Aluminium; Calcium; Cobalt; Copper; Deposit type; DEPTH, sediment/rock; Dredge; DRG; Electron microprobe (EMP); Elevation of event; Event label; Geochemistry; Identification; Iron; Latitude of event; Longitude of event; Magnesium; Manganese; manganese micronodule; manganese nodule; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; NZOI-Tangaroa_22; ocean; Potassium; sediment; Shape; Silicon; South Pacific Ocean; TANG22-G1006B; TANG22-G1007; TANG22-G992A; TANG22-G995; Tangaroa (1960); Texture; Titanium; Zinc
    Type: Dataset
    Format: text/tab-separated-values, 483 data points
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  • 9
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    (Table 4 bis, page 194), Radiochemical data on four successive Mn-rich layers of a West Timor nodule (1978)
    PANGAEA
    Details
    Publication Date: 2023-08-28
    Keywords: DISTANCE; Distance, maximum; Distance, minimum; Identification; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Noil_Tobee_M; Noni river, Timor; Thorium; Thorium, standard deviation; Thorium-230/Uranium-234 ratio; Thorium-230/Uranium-234 ratio, standard deviation; Uranium; Uranium, standard deviation; Uranium-234/Uranium-238 activity ratio; Uranium-234/Uranium-238 activity ratio, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 44 data points
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  • 10
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    (Table 5, pages 94-95) Bulk chemical analysis of outer rinds of manganese nodules from R/V Moana Wave Cruise Mn-74-02 stations (1975)
    PANGAEA
    Details
    Publication Date: 2023-08-28
    Keywords: Copper; Date/Time of event; Deposit type; DEPTH, sediment/rock; Description; Dredge, bucket; DRG_BU; Elevation of event; Event label; FFGR; Free-fall grab; Iron; Latitude of event; Longitude of event; Manganese; Mn-74-02-13A-FFG-002; Mn-74-02-13A-FFG-004; Mn-74-02-13B-D-001; Mn-74-02-13B-FFG-005; Mn-74-02-13B-FFG-007; Mn-74-02-13B-FFG-008; Mn-74-02-13C-D-002; Mn-74-02-13C-D-004; Mn-74-02-13C-FFG-009; Mn-74-02-13C-FFG-011; Mn-74-02-13C-FFG-012; Mn-74-02-15-FFG-021; Mn-74-02-15-FFG-023; Mn-74-02-15-FFG-024; Mn-74-02-15-FFG-026; Mn-74-02-16-FFG-029; Mn-74-02-16-FFG-030; Mn-74-02-16-FFG-036; Mn-74-02 IDOE DOMES; Moana Wave; MW7402; MW7402-13D01; MW7402-13D02; MW7402-13D04; MW7402-13G02; MW7402-13G04; MW7402-13G05; MW7402-13G07; MW7402-13G08; MW7402-13G09; MW7402-13G11; MW7402-13G12; MW7402-15G21; MW7402-15G23; MW7402-15G24; MW7402-15G26; MW7402-16G29; MW7402-16G30; MW7402-16G36; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Pacific Ocean; Sample ID; Titanium; X-ray fluorescence (XRF)
    Type: Dataset
    Format: text/tab-separated-values, 464 data points
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