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  • 1
    Monograph available for loan
    Monograph available for loan
    Englewood Cliffs : Prentice-Hall
    Call number: M 93.0218
    Type of Medium: Monograph available for loan
    Pages: VIII, 120 S. : Ill.
    Edition: 4. print.
    Series Statement: Foundations of earth science
    Language: English
    Location: Upper compact magazine
    Branch Library: GFZ Library
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  • 2
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    Unknown
    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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  • 3
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    Unknown
    PANGAEA
    In:  Supplement to: Turekian, Karl K; Cochran, J Kirk; Krishnaswami, Seth; Lanford, W A; Parker, P D; Bauer, K A (1979): The measurement of 10Be in manganese nodules using a tandem Van De Graaff accelerator. Geophysical Research Letters, 6(5), 417-420, https://doi.org/10.1029/GL006i005p00417
    Publication Date: 2023-08-28
    Description: The growth rate of a manganese nodule from the South Atlantic Ocean (Rio Grande Ridge) has been determined using a 10Be profile as measured with a Tandem Van de Graaff accelerator. This rate is 4.5 mm /My. A correlation may exist between the 10Be flux and the Mn flux to nodules.
    Keywords: Atlantic Ocean; Beryllium-10; Beryllium-10/Beryllium-9, standard deviation; Beryllium-10/Beryllium-9 ratio; Beryllium-10 decay; Deposit type; DEPTH, sediment/rock; Description; DISTANCE; Distance, maximum; Distance, minimum; Dredge; DRG; Identification; Mass, netto; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; RC16; RC16-10RD; Robert Conrad
    Type: Dataset
    Format: text/tab-separated-values, 30 data points
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  • 4
    Publication Date: 2023-08-28
    Keywords: BC; Box corer; Deposit type; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DOMES-A47-16; DOMES Site C, Pacific Ocean; Elevation of event; Event label; Ion microprobe (Harvard-Brown, M.I.T.); Latitude of event; Longitude of event; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Oceanographer; Osmium; Osmium, standard deviation; Osmium-186; Osmium-187/Osmium-186, error; Osmium-187/Osmium-186 ratio; Osmium-189/Osmium-192 ratio; Osmium-189/Osmium-192 ratio, error; Pacific Ocean; RP8OC75; RP-8-OC-75; RP8OC7503; RP8OC75-47-16; RP8OC75-57-58; Sample code/label; Sample ID
    Type: Dataset
    Format: text/tab-separated-values, 36 data points
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  • 5
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    PANGAEA
    In:  Supplement to: Esser, Bradley K; Turekian, Karl K (1988): Accretion rate of extraterrestrial particles determined from osmium isotope systematics of Pacific Pelagic clay and manganese nodules. Geochimica et Cosmochimica Acta, 52(6), 1383-1388, https://doi.org/10.1016/0016-7037(88)90209-8
    Publication Date: 2023-08-28
    Description: Pelagic clay and Mn nodules from DOMES sites in the North Pacific and a varved glacial lake deposit from Connecticut were analysed for Os concentration and isotopic composition by isotope-dilution secondary ion mass spectrometry after treatment by NiS fusion or oxalic acid leaching. Bulk pelagic clay from DOMES site C has 187Os/186Os = 6.5 and Os = 0.14 ng/g. Oxalic acid leaches of this same sediment and of Mn nodules from DOMES sites A and C have more radiogenic 187Os/186Os ratios which average 8.3. Bulk glacial Lake Hitchcock sediment has 187Os/186Os = 12.5 and Os = 0.06 ng/g. The total Os flux to North Pacific pelagic clay is 7 to 10 ng Os/cm**2/10**6 y. Lake Hitchcock sediment provides an integrated value for the local crustal 187Os/186Os ratio. The oxalic acid leaches are assumed to attack hydrogenous phases selectively. A simple model in which the only sources of Os to the ocean are continental crust with the isotopic composition of Lake Hitchcock (187Os/186Os = 12.5) and extraterrestrial particles with 187Os/186Os = 1.1 results in a cosmic flux of osmium to the sediment of 4.9 ng Os/cm**2/10**6 y of which 20% is hydrogenous. A model in which the sources of Os to the ocean are continental crust with an 187Os/186Os ratio of 30 (from the model of Palmer and Turekian, 1986), oceanic mantle or crust with 187Os/186Os = 1.04 and extraterrestrial particles with 187Os/186Os = 1.1 results in a cosmic flux of Os to the sediment of 5.7 ng Os/cm**2/10**6 y of which none is hydrogenous. These extraterrestrial Os fluxes correspond to maximum C-1 chondrite accretion rates of between 4.9 × 104 and 5.6 × 104 tonnes/y.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 6
    Publication Date: 2023-08-28
    Keywords: Alpha spectrometry; ARRH-TF; BC; Box corer; Deposit type; DEPTH, sediment/rock; DISTANCE; Distance, maximum; Distance, minimum; DOMES-A47-16; Dredge; DRG; Event label; Identification; Indian Ocean; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Oceanographer; Pacific Ocean; RP8OC75; RP8OC75-47-16; Thorium-227; Thorium-227, standard deviation; Thorium-230; Thorium-230, standard deviation; Thorium-232; Thorium-232, standard deviation; Vit 5186; Vityaz (ex-Mars); Vityaz-35; VITYAZ5186
    Type: Dataset
    Format: text/tab-separated-values, 334 data points
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  • 7
    Publication Date: 2023-08-28
    Keywords: BC; Box corer; Deposit type; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DMSA-DJ24; DMSA-DJ34; DOMES Site A, Pacific Ocean; DOMES Site C, Pacific Ocean; Elevation of event; Event label; Ion microprobe (Harvard-Brown, M.I.T.); Latitude of event; Longitude of event; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Oceanographer; Osmium; Osmium, standard deviation; Osmium-186; Osmium-187/Osmium-186, error; Osmium-187/Osmium-186 ratio; Osmium-189/Osmium-192 ratio; Osmium-189/Osmium-192 ratio, error; RP23OC77; RP-23-OC77; RP-8-OC-75; RP8OC7503; RP8OC75-57-58; Sample code/label; Sample ID
    Type: Dataset
    Format: text/tab-separated-values, 70 data points
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  • 8
    Publication Date: 2023-08-28
    Keywords: ARRH-TF; BC; Beryllium-10, standard deviation; Beryllium-10 decay; Beryllium-9; Box corer; Deposit type; DEPTH, sediment/rock; DISTANCE; Distance, maximum; Distance, minimum; DOMES-A47-16; Dredge; DRG; Event label; Identification; 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: text/tab-separated-values, 125 data points
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  • 9
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    PANGAEA
    In:  Supplement to: Williams, Gwyneth A; Turekian, Karl K (2004): The glacial-interglacial variation of seawater osmium isotopes as recorded in Santa Barbara Basin. Earth and Planetary Science Letters, 228(3-4), 379-389, https://doi.org/10.1016/j.epsl.2004.10.004
    Publication Date: 2024-01-09
    Description: The Pleistocene deposits of Santa Barbara Basin (SBB) show laminations during interglacial periods typical of an anoxic or suboxic depositional environment and more sporadically laminated deposits during glacial times, indicating a more oxic environment of deposition. The 187Os/188Os value of sediment leaches varies as a function of climate, consistent with a more radiogenic Os signal during interglacial times and less radiogenic Os values more typical of glacial times. The signal is confounded by contributions from a high Os detrital component with a variable 187Os/188Os value, but generally agrees with prior result from deposits from other marine environments.
    Keywords: 146-893A; AGE; DEPTH, sediment/rock; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Joides Resolution; Leg146; Negative-thermal ionization mass spectrometry (N-TIMS); North Pacific Ocean; Ocean Drilling Program; ODP; Osmium; Osmium-187/Osmium-188, error; Osmium-187/Osmium-188 ratio; Sample code/label
    Type: Dataset
    Format: text/tab-separated-values, 78 data points
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  • 10
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Environmental science & technology 1 (1967), S. 940-942 
    ISSN: 1520-5851
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Type of Medium: Electronic Resource
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