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  • 2020-2024  (30)
  • 1985-1989  (3)
  • 2023  (30)
  • 1986  (3)
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  • 2020-2024  (30)
  • 1985-1989  (3)
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  • 1
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    Radiochemical data for a manganese nodule sample from the MN7601-PLEIADES campaign (R/V Melville) (2023)
    PANGAEA
    Details
    Publication Date: 2023-08-28
    Description: Using radiochemical methods, the authors have measured the distribution of uranium, thorium, radium, polonium and protactinium isotopes from the top and bottom sides of the a manganese nodule from Station 20 of the PLEIADES Mn7601 campaign. This "apple" shaped nodule (6.5x3.0 cm) was laying on a bed of siliceous ooze (see illustrations). Successive thin layers of the nodule were carefully scraped from the surface of the measured area with a sharp surgical blade. All samples reduced to powder were air-dried at 110°C for at least two hours before analysis. The relative gross alpha activities from each layer were assayed by Alpha spectrometry using a thick-source counting in a scintillation counter.
    Keywords: Alpha spectrometry; BC; Box corer; Deposit type; DEPTH, sediment/rock; DISTANCE; Distance, maximum; Distance, minimum; Elevation of event; Event label; Geochemistry; Identification; Latitude of event; Longitude of event; manganese micronodule; manganese nodule; Melville; MN76-01, Pleiades; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; Pacific Ocean; PLDS04MV-109BX; PLDS-4; Polonium-210; Protactinium-231; Protactinium-231 excess; Protactinium-231 excess, standard deviation; Radium-226; Sample type; sediment; Thorium-228; Thorium-230; Thorium-230 excess; Thorium-230 excess, standard deviation; Thorium-232; Uranium-234; Uranium-238
    Type: Dataset
    Format: text/tab-separated-values, 218 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    (Table 1) Mass accumulation rate, linear sedimentation rate, bulk denisty and age at DSDP Leg 92 holes (1986)
    PANGAEA
    Details
    Publication Date: 2023-09-30
    Keywords: 92-597; 92-598; 92-599; 92-600C; 92-601; Accumulation rate, mass; AGE; Age, maximum/old; Age, minimum/young; Deep Sea Drilling Project; Density, dry bulk; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; DSDP; Elevation of event; Event label; Glomar Challenger; Latitude of event; Leg92; Longitude of event; Sedimentation rate; see reference(s); South Pacific; South Pacific/CONT RISE; South Pacific/PLATEAU
    Type: Dataset
    Format: text/tab-separated-values, 203 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 3
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    (Table 2) Present manganese accumulation rates at the east Pacific Rise, 17°S and 19 to 20°S transects (1986)
    PANGAEA
    Details
    Publication Date: 2023-09-30
    Keywords: 92-598_Site; 92-599_Site; 92-600_Site; Accumulation rate, iron; Accumulation rate, manganese; Comment; COMPCORE; Composite Core; Deep Sea Drilling Project; DEPTH, sediment/rock; Distance; DSDP; Elevation of event; Event label; Glomar Challenger; Latitude of event; Leg92; Longitude of event; OC73-3; OC73-3-020P; OC73-3-025P; Oceanographer; PC; Piston corer; see reference(s); South Pacific; South Pacific/PLATEAU; South Pacific Ocean; V19; V19-53; V19-54; V19-55; V19-61; V19-64; Vema
    Type: Dataset
    Format: text/tab-separated-values, 40 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Microprobe analysis of a manganese nodule sample from the MN7601-PLEIADES campaign (R/V Melville) (2023)
    PANGAEA
    Details
    Publication Date: 2023-08-28
    Description: The authors have selected for analysis a manganese nodule from Station 20 of the PLEIADES Mn7601 campaign. This "apple" shaped nodule (6.5x3.0 cm) was laying on a bed of siliceous ooze (see illustrations). Electron microprobe measurements were made on the same section as that used in the alpha-track studies. Prior to the microprobe analyses, however, the nodule slab was highly polished to reduce surface relief A MAC electron microprobe was employed and the electron beam was focused to a dmmeter of about 2 micrometers using 15 kV and 300 mA.
    Keywords: Aluminium oxide; Barium oxide; BC; Box corer; Calcium oxide; Cobalt oxide; Copper(II) oxide; Deposit type; DEPTH, sediment/rock; Distance; Elevation of event; Event label; Geochemistry; Identification; Iron oxide, Fe2O3; Latitude of event; Longitude of event; Magnesium oxide; Manganese dioxide; manganese micronodule; manganese nodule; Melville; Microprobe; MN76-01, Pleiades; Nickel oxide; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; Pacific Ocean; PLDS04MV-109BX; PLDS-4; Potassium oxide; Sample type; sediment; Silicon dioxide; Sodium oxide; Titanium dioxide
    Type: Dataset
    Format: text/tab-separated-values, 543 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    Chemical composition of a manganese nodule sample from the MN7601-PLEIADES campaign (R/V Melville) (2023)
    PANGAEA
    Details
    Publication Date: 2023-08-28
    Description: The authors have selected for analysis a manganese nodule from Station 20 of the PLEIADES Mn7601 campaign. This "apple" shaped nodule (6.5x3.0 cm) was laying on a bed of siliceous ooze (see illustrations). Successive thin layers of the nodule were carefully scraped from the surface of the measured area with a sharp surgical blade. All samples reduced to powder were air-dried at 110°C for at least two hours before analysis. The chemical composition of (1) the top 3-5 mm, (2) the bottom 3-5 mm, and (3) the bulk nodule from a section of Mn7601-20-2 adjacent to the portion used for the radiochemical studies was determined by atomic absorption and neutron activation analysis.
    Keywords: Aluminium; Antimony; Atomic absorption spectrophotometry; Barium; BC; Box corer; Calcium; Cerium; Cobalt; Copper; Deposit type; DEPTH, sediment/rock; DISTANCE; Elevation of event; Europium; Event label; Geochemistry; Hafnium; Holmium; Identification; Iron; Lanthanum; Latitude of event; Longitude of event; Lutetium; Manganese; manganese micronodule; manganese nodule; Melville; MN76-01, Pleiades; Neodymium; Neutron activation analysis; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; Pacific Ocean; PLDS04MV-109BX; PLDS-4; Samarium; Sample type; Scandium; sediment; Silicon; Terbium; Thorium; Uranium; Ytterbium; Zinc
    Type: Dataset
    Format: text/tab-separated-values, 81 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    Mass accumulation rates, age, sedimentation rate and bulk density at the East Pacific Rise (1986)
    PANGAEA
    In:  Supplement to: Lyle, Mitchell W; Owen, Robert M; Leinen, Margaret W (1986): History of hydrothermal sedimentation at the East Pacific Rise, 19°S. In: Leinen, M; Rea DK; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 92, 585-596, https://doi.org/10.2973/dsdp.proc.92.139.1986
    Details
    Publication Date: 2023-09-30
    Description: The rate at which hydrothermal precipitates accumulate, as measured by the accumulation rate of manganese, can be used to identify periods of anomalous hydrothermal activity in the past. From a preliminary study of Sites 597 and 598, four periods prior to 6 Ma of anomalously high hydrothermal activity have been identified: 8.5 to 10.5 Ma, 12 to 16 Ma, 17 to 18 Ma, and 23-to-27 Ma. The 18-Ma anomaly is the largest and is associated with the jump in spreading from the fossil Mendoza Ridge to the East Pacific Rise, whereas the 23-to-27-Ma anomaly is correlated with the birth of the Galapagos Spreading Center and resultant ridge reorganization. The 12-to-16-Ma and 8.5-to-10.5-Ma anomalies are correlated with periods of anomalously high volcanism around the rim of the Pacific Basin and may be related to other periods of ridge reorganization along the East Pacific Rise. There is no apparent correlation between periods of fast spreading at 19°S and periods of high hydrothermal activity. We thus suggest that periods when hydrothermal activity and crustal alteration at mid-ocean ridges are the most pronounced may be periods of large-scale ridge reorganization.
    Keywords: Deep Sea Drilling Project; DSDP
    Type: Dataset
    Format: application/zip, 2 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    MANOP Site H manganese nodules and crusts chemical composition determined by atomic absorption spectrometry (AAS) (2023)
    PANGAEA
    Details
    Publication Date: 2023-11-23
    Description: Manganese nodules and crusts were sampled from box cores collected at the Manganese Nodule Program (MANOP) site H in the Eastern Equatorial Pacific ocean. For majority of site H nodule bottoms have smooth, lustrous patches, whereas nodule tops are generally rough and dull. The top/bottom orientation of each manganese nodule was labeled during curation. Most of the nodutes studied were cut in haIf, and a 3-5 mm layer was scraped from nodule tops and bottoms. The chemical analysis was performed on both top and bottom sides as well as on the whole specimen. Atomic absorption spectrometry (AAS) was used folIowing complete dissolution with HF and aqua regia in teflon bombs.
    Keywords: Aluminium; Atomic absorption spectrophotometry; Barium; BC; Box corer; Calcium; Cobalt; Copper; Deposit type; DEPTH, sediment/rock; Dredge, rock; DRG_R; East Pacific Ocean; Elevation of event; Event label; Geochemistry; Identification; Indomed_leg_1; INMD01-26BX_B1 (MANOP Site H); INMD01-27BX_B5 (MANOP Site H); INMD01-34BX_B5 (MANOP Site H); INMD01-36BX_B3 (MANOP Site H); INMD-26BX_B1; INMD-27BX_B5; INMD-34BX_B5; INMD-36BX_B3; Iron; Latitude of event; Longitude of event; Magnesium; Manganese; manganese micronodule; manganese nodule; MANOP Site H, Pacific Ocean; Melville; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; Pacific Ocean; PLTO03MV; PLUTO-3; PLUTO-3-11D; PLUTO III (MANOP Site H); Potassium; Sample code/label; Sample type; sediment; Silicon; Sodium; Titanium; VLCN-1; VLCN-1-37BC; VLCN-1-40BX; VLCN-1-48BC; VLCN-1-50BC; VLCN-1-52BX; VLCN-1-55BX; VLCN-1-66BX; VLCN-1-68BX; VLCN-1-69BC; VULCAN Leg 1; Zinc
    Type: Dataset
    Format: text/tab-separated-values, 1326 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    MANOP Site H manganese nodules and crusts chemical composition determined by instrumental neutron activation (INAA) (2023)
    PANGAEA
    Details
    Publication Date: 2023-11-23
    Description: Manganese nodules and crusts were sampled from box cores collected at the Manganese Nodule Program (MANOP) site H in the Eastern Equatorial Pacific ocean. For majority of site H nodule bottoms have smooth, lustrous patches, whereas nodule tops are generally rough and dull. The top/bottom orientation of each manganese nodule was labeled during curation. Most of the nodutes studied were cut in haIf, and a 3-5 mm layer was scraped from nodule tops and bottoms. The chemical analysis was performed on both top and bottom sides as well as on the whole specimen. They were analysed at the U.S. Geological Survey, Menlo Park using instrumental neutron activation analysis with high-resolution lithium-drifted germanium detectors. This method involves the meeasurement of gamma-ray emission after proper irradiation of the samples.
    Keywords: Antimony; Barium; BC; Box corer; Chromium; Cobalt; Deposit type; DEPTH, sediment/rock; Dredge, rock; DRG_R; East Pacific Ocean; Elevation of event; Event label; Geochemistry; Hafnium; Identification; Indomed_leg_1; INMD01-26BX_B1 (MANOP Site H); INMD01-27BX_B5 (MANOP Site H); INMD01-34BX_B5 (MANOP Site H); INMD01-36BX_B3 (MANOP Site H); INMD-26BX_B1; INMD-27BX_B5; INMD-34BX_B5; INMD-36BX_B3; Instrumental neutron activation analysis (INAA); Iron; Lanthanum; Latitude of event; Longitude of event; manganese micronodule; manganese nodule; MANOP Site H, Pacific Ocean; Melville; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; Pacific Ocean; PLTO03MV; PLUTO-3; PLUTO-3-11D; PLUTO III (MANOP Site H); Sample code/label; Sample type; Scandium; sediment; Thorium; Uranium; VLCN-1; VLCN-1-37BC; VLCN-1-52BX; VULCAN Leg 1
    Type: Dataset
    Format: text/tab-separated-values, 448 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
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    MANOP Sites S and R manganese nodules chemical composition determined by atomic absorption spectrometry (AAS) (2023)
    PANGAEA
    Details
    Publication Date: 2023-11-23
    Description: Manganese nodules were sampled from box cores collected at the Manganese Nodule Program (MANOP) site S (Clarion-Clipperton Fracture Zone) and site R (Murray Fracture Zone) in the Central Pacific ocean. For these sites nodule tops are smoother than nodule bottoms, which commonly have a gritty texture. The top/bottom orientation of each manganese nodule was labeled during curation. Most of the nodutes studied were cut in haIf, and a 3-5 mm layer was scraped from nodule tops and bottoms. The chemical analysis was performed on both top and bottom sides as well as on the whole specimen. They were analysed at the U.S. Geological Survey, Menlo Park using instrumental neutron activation analysis with high-resolution lithium-drifted germanium detectors. This method involves the meeasurement of gamma-ray emission after proper irradiation of the samples.
    Keywords: Aluminium; Atomic absorption spectrometry (AAS); Barium; BC; Box corer; Calcium; Cobalt; Copper; Deposit type; DEPTH, sediment/rock; Elevation of event; Event label; Geochemistry; Identification; Iron; K7905; K7905-054BC; K7905-062BC; K7905-101BC; K7905-104BC; Knorr; Latitude of event; Longitude of event; Magnesium; Manganese; manganese micronodule; manganese nodule; MANOP; MANOP Site S, Pacific Ocean; Melville; MN76-01, Pleiades; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; Pacific Ocean; PLDS04MV-109BX; PLDS-4; Potassium; RAMA; RAMA (MANOP Site R); RAMA01WT; RAMA01WT-15BX; RAMA01WT-20BX; Sample code/label; Sample type; sediment; Silicon; Sodium; Thomas Washington; Titanium; Zinc
    Type: Dataset
    Format: text/tab-separated-values, 474 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
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    Calcium carbonate (CaCO3) of discrete samples from IODP Site 320-U1332 (2023)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Keywords: 320-U1332A; 320-U1332B; Age; Astronomically calibrated age model modified after Westerhold et al. (2014); Calcium carbonate; CCD; Coulometry; Depth, composite revised; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Eocene-Oligocene Transition; Event label; Exp320; Half; IODP Depth Scale Terminology; IODP Exp. 320; Joides Resolution; Latitude of event; Longitude of event; ODP Leg 199; Pacific Equatorial Age Transect I; Revised composite depth modified after Westerhold et al. (2012); Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 1380 data points
    Location Call Number Limitation Availability
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