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  • 1
    Electronic Resource
    Electronic Resource
    Concentrations of Trace Elements in Carbonate Reference Materials Coral JCp-1 and Giant Clam JCt-1 by Inductively Coupled Plasma-Mass Spectrometry (2004)
    Oxford, UK : Blackwell Publishing Ltd
    Geostandards and geoanalytical research 28 (2004), S. 0 
    Details
    ISSN: 1751-908X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Trace elements in the Geological Survey of Japan carbonate reference materials Coral JCp-1 and Giant Clam JCt-1 were determined by inductively coupled plasma-mass spectrometry after digestion with 2% v/v HNO3. A standard addition method was adopted in this determination in order to neutralise the Ca matrix effect. In addition, Sc, Y, In and Bi were used as internal standards to control the matrix effect and correct instrumental drift. Of the eighteen elements measured in JCp-1, precisions for fourteen elements, including Cu, Cd and Ba, were better than 10% RSD and concentrations ranged from 0.002 μg g-1 (Cs) to 8.02 μg g-1 (Ba). The concentrations of measured trace elements in JCt-1, except for Cu, were lower than those in JCp-1. Precisions for all elements with concentrations higher than 0.04 μg g-1 in JCt-1 were also better than 10% RSD and concentrations were found to be between 0.001 μg g-1 (Cs) and 4.84 μg g-1 (Ba). The concentrations of more than fifteen trace elements in the aragonite reference materials are reported here for the first time. Both reference materials are suitable for use in geochemical studies of environmental reconstruction based upon biogenic carbonate materials.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-908X.2004.tb00759.x
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    Paper (German National Licenses)
    Fulltext
  • 2
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    (Table 1) Major and trace elements at DSDP Leg 57 Holes
    PANGAEA
    In:  Supplement to: Nohara, Masato (1980): Chemical composition and metal accumulation rates of Japan Trench inner slope sediments, Leg 57, Deep Sea Drilling Project. In: Scientific Party, Initial Reports of the Deep Sea Drilling Project, 56/57 (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 56-57, 1259-1267, https://doi.org/10.2973/dsdp.proc.5657.157.1980
    Details
    Publication Date: 2023-06-27
    Description: Several papers have recently appeared concerning the metalliferous sediments on the active oceanic ridges. The geochemistry of such sediments is reasonably well understood and the deposits generally considered to be products of volcanic processes (Boström and Peterson, 1969; Boström et al., 1969; Horowitz, 1970, 1974; Cronan et al., 1972; Cronan and Garrett, 1973; Piper, 1973). The geochemistry of trench sediments, however, is less well known. There is a great need for studies of trench inner slope sediments, particularly in view of the significance of such sediments as a record of the effects of oceanic plate subduction under the continental crust. Sampling by Glomar Challenger in the trench inner slope was therefore of utmost importance in determining the origin of trench inner slope deposits.
    Keywords: 57-438; 57-438A; 57-438B; 57-439; 57-440; 57-440A; 57-440B; 57-441; 57-441A; 57-441B; Aluminium; Atomic absorption spectrometry (AAS); Chromium; Cobalt; Copper; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Elevation of event; Event label; Glomar Challenger; Iron; Latitude of event; Leg57; Lithium; Longitude of event; Manganese; Nickel; North Pacific/BASIN; North Pacific/TRENCH; Sample code/label; Strontium; Titanium; Zinc
    Type: Dataset
    Format: text/tab-separated-values, 1440 data points
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  • 3
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    (Table 2) Sample distribution, physical properties, geochronology, and accumulation rates for sediments at DSDP Leg 56 Holes
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 56-434; 56-434B; 56-435; 56-435A; 56-436; Accumulation rate, mass; AGE; Age, maximum/old; Age, minimum/young; Deep Sea Drilling Project; Density; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Elevation of event; Event label; Glomar Challenger; Latitude of event; Leg56; Longitude of event; North Pacific/RIDGE; North Pacific/TRENCH; Sample code/label; Sample code/label 2; Sedimentation rate; Thickness
    Type: Dataset
    Format: text/tab-separated-values, 157 data points
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  • 4
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    (Table 1) Temperature and foraminiferal Mg/Ca ratios of samples off Japan
    PANGAEA
    In:  Supplement to: Toyofuku, Takashi; Kitazato, Hiroshi; Kawahata, Hodaka; Tsuchiya, Masashi; Nohara, Masato (2000): Evaluation of Mg/Ca thermometry in foraminifera: Comparison of experimental results and measurements in nature. Paleoceanography, 15(4), 456-464, https://doi.org/10.1029/1999PA000460
    Details
    Publication Date: 2023-05-12
    Description: We studied Mg/Ca in high-Mg, shallow-water benthic foraminifera in culture and in samples from natural environments, in order to evaluate the expression of latitudinal and seasonal temperature variability in Mg/Ca in their tests. We cultured Planoglabratella opercularis (d'Orbigny) and Quinqueloculina yabei Asano under controlled temperature (10°-25°C) and salinity (30-38) conditions. Both species show a linear correlation between Mg/Ca and temperature, but they differ in temperature sensitivity. Salinity does not significantly influence Mg/Ca. In the samples collected in nature, Mg/Ca and seawater temperatures are positively correlated, but there are more complexities than in the records for cultured specimens due to such factors as seasonal fluctuations in temperature. We conclude that Mg/Ca ratios in monospecific benthic foraminiferal samples may be used as a reliable temperature proxy, if the lifetime of the species is taken into account.
    Keywords: average; Calculated from Mg/Ca ratios; DATE/TIME; DEPTH, sediment/rock; Echizen-Matsushima; Event label; Habitat; HAND; Kushikino; Latitude of event; Longitude of event; Magnesium/Calcium ratio; off Japan; Omaezaki; Rumoi; Sampling by hand; Taisha; Temperature, calculated; Temperature, water; Tsuruka
    Type: Dataset
    Format: text/tab-separated-values, 70 data points
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  • 5
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    Geochemical history at DSDP Leg 56 Holes
    PANGAEA
    In:  Supplement to: Nohara, Masato (1980): Geochemical history of Japan Trench sediments sampled during Leg 56, Deep Sea Drilling Project. In: Scientific Party, Initial Reports of the Deep Sea Drilling Project, 56/57 (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 56-57, 1251-1257, https://doi.org/10.2973/dsdp.proc.5657.156.1980
    Details
    Publication Date: 2023-06-27
    Description: A geological model of subduction postulated by Karig, Ingle, et al. (1975) and Karig and Sharman (1975) proposes that the sedimentary prism at the foot of the landward wall is being actively built as sediment is scraped off the subducting oceanic and plastered onto the base of the wedge, forming an accretionary wedge containing overthrust sedimentary layers or intense sedimentary folding. Because overlying layers must continually be uplifted and compressed to accommodate new matter at the base, the accreting wedge will provide a geochemical record of this process at or near the Japan Trench. Several recent papers have discussed the metalliferous sediments on the active oceanic ridges. The geochemistry of such sediments is now reasonably well known: generally these deposits are considered products of volcanic processes (Boström and Peterson, 1969; Böstrom et al., 1969; Horowitz, 1970, 1974; Cronan et al., 1972; Cronan and Garrett, 1973). The geochemistry of subduction zone sediments, however, is less well known, and the need for studies of these sediments is particularly urgent if such sediments provide a record of the effects of subduction of oceanic plates under continental crust. Because the Japan Trench contains welldeveloped subduction zone deposits, Leg 56 sampling was of utmost importance to the discovery of how they originate.
    Keywords: 56-434; 56-434B; 56-435; 56-435A; 56-436; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; Glomar Challenger; Leg56; North Pacific/RIDGE; North Pacific/TRENCH
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 6
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    (Table 1) Major and trace elements at DSDP Leg 56 Holes
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: 56-434; 56-434B; 56-435; 56-435A; 56-436; Aluminium; Atomic absorption spectrometry (AAS); Chromium; Cobalt; Copper; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Elevation of event; Event label; Glomar Challenger; Iron; Latitude of event; Leg56; Lithium; Longitude of event; Manganese; Nickel; North Pacific/RIDGE; North Pacific/TRENCH; Sample code/label; Strontium; Titanium; Zinc
    Type: Dataset
    Format: text/tab-separated-values, 1140 data points
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  • 7
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    (Table 1) Organic carbon isotopic composition in Cretaceous sediments at DSDP Hole 75-530A
    PANGAEA
    In:  Supplement to: Nohara, Masato; Ishizuka, Toshio; Gieskes, Joris M (1984): Organic carbon isotopic composition in Cretaceous sediments, Angola Basin, southeastern Atlantic, Deep Sea Drilling Project Site 530. In: Hay, WW; Sibuet, J-C; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 75, 1051-1054, https://doi.org/10.2973/dsdp.proc.75.136.1984
    Details
    Publication Date: 2023-06-27
    Description: Cretaceous sediments from DSDP Site 530 have been analyzed for organic carbon isotopic composition. The d13C values in the sediments decrease from -22.7 per mil to -27.5 per mil in the following order: light-olive green mudstone/claystone, dark brown-red mudstone/siltstone/claystone, and black shale. This large range is primarily the result of variation in the relative amounts of terrestrial organic carbon superimposed on that derived from marine organisms. The black shales have an average d13C value of -25.9 per mil (range is from -23.7 per mil to -27.5 per mil). These values indicate that they originated primarily in terrigenous organic materials. The average d13C value present throughout the Cretaceous suggests that a large amount of terrestrial organic matter was supplied into this paleoenvironment, except during the Campanian, when an average d13C of -23.9 per mil is found near the marine end of the range.
    Keywords: 75-530A; Carbon, organic, total; Deep Sea Drilling Project; DRILL; Drilling/drill rig; DSDP; DSDP/ODP/IODP sample designation; Glomar Challenger; Leg75; Lithology/composition/facies; Mass spectrometer Varian MAT 250; Sample code/label; see reference(s); South Atlantic/RIDGE; Stage; δ13C, organic carbon
    Type: Dataset
    Format: text/tab-separated-values, 176 data points
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  • 8
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    (Table 2, Page 270) Average chemical composition of manganese nodules and crust collected at different localities the Pacific Ocean (1977)
    PANGAEA
    In:  Supplement to: Nohara, Masato (1977): The geochemistry of manganese nodules from the Pacific Ocean. Journal of the Geological Society of Japan, 83(5), 267-276, https://doi.org/10.5575/geosoc.83.267
    Details
    Publication Date: 2023-08-28
    Description: Considerable regional variations in the chemical composition of manganese nodules from a wide range of the Pacific Ocean have been observed. These variations can be more exactly expressed in terms of inter-element relationships. In particular, Cu-Mn and Cu-Ni associations reveal that Cu content in pelagic nodules increases rapidly in proportion to those of Mn or Ni. In nodules from continental borderland and hemipelagic areas, even if Mn or Ni contents increase, that of Cu increases only slightly. It is suggested that the considerable chemical differences within individual nodules and between nodules from the same site, at a limited pelagic area where there is no marked change in depositional conditions of nodules, are due to the role of hydrolyzable trace elements in the formation of nodules.
    Keywords: Aluminium; Atomic absorption spectrometry (AAS), Perkin-Elmer; Cobalt; Copper; Core; CORE; Deposit type; DEPTH, sediment/rock; Description; Dredge; DRG; Elevation of event; Event label; Geographical setting; GH76-2; GH76-2-D144; Hakuho-Maru; Hakurei-Maru (1974); Identification; Iron; KH67-5-34; KH67-5-40; KH-68-3; KH68-3-9-16-2; KH68-3-9-6; KH68-3-9-7; KH68-3-9-8; KH68-3-9-9; KH-68-4; KH68-4-33-2; KH68-4-41-2; KH-69-2; KH69-2-1-1; KH69-2-5-1; KH-71-1; KH71-1-3-3a; KH-71-5; KH71-5-12-3; KH71-5-15-3; KH71-5-20-3; KH-72-2; KH72-2-46; KH-76-2; KH76-32-2; Latitude of event; Lead; Longitude of event; Manganese; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Number of subsamples; OKAD01; OKAD02; Pacific Ocean; Sediment type; SPac_1968-69_HH_170W; SPac_1971_HH_150-100W; Station 441; Titanium; Zinc
    Type: Dataset
    Format: text/tab-separated-values, 270 data points
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  • 9
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    Description and chemical composition of manganese nodules collected during Hakuho Maru Cruise KH-72-2, Oct-Dec, 1972 in the Southwest Japan Arc and Ryukyu Arc areas (1975)
    PANGAEA
    In:  Supplement to: Kagami, Hideo (1975): Preliminary report of the Hakuho Maru Cruise KH-72-2 (The Southwest Japan Arc and Ryukyu Arc Areas), October 24 - December 15,1972. Ocean Research Institute, University of Tokyo, 144 pp, hdl:2261/58775
    Details
    Publication Date: 2023-08-28
    Description: The cores and dredges described in this report were taken on the KH-72-2 Expedition in October-December, 1972 by the Ocean Research Institute, University of Tokyo from the R/V Hakuho Maru. A total of 21 cores and dredge sites have been recovered.
    Keywords: NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 10
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    Illustration of manganese nodules and crust collected from the Suiko Seamount, Northwestern Pacific Ocean (1977)
    PANGAEA
    In:  Supplement to: Nohara, Masato; Nasu, Noriyuki (1977): Mineralogical and geochemical characteristics of manganese nodules from the Suiko Seamount, Northwestern Pacific Ocean - 2 - Geochemical aspect and its origin. Bulletin of the Geological Survey of Japan, 28(9), 615-621, https://www.gsj.jp/data/bull-gsj/28-09_05.pdf
    Details
    Publication Date: 2023-08-28
    Description: An initial investigation has been undertaken on the chemical composition of the manganese nodules. The results of chemical analyses on each layer of single nodules reveal the periodic patterns of distribution for Mn, Fe, Cu, Pb, Zn, Ni and Co contents. The variations strongly suggest that those of the elements in nodules from this region are, at least, climatically controlled.
    Keywords: Atomic absorption spectrometry (AAS), Perkin-Elmer; Cobalt; Comment; Copper; DEPTH, sediment/rock; Dredge; DRG; Elevation of event; Event label; Hakuho-Maru; Iron; KH-68-3; KH68-3-9-6; KH68-3-9-7; KH68-3-9-8; KH68-3-9-9; Latitude of event; Lead; Longitude of event; Manganese; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Pacific Ocean; Sample ID
    Type: Dataset
    Format: text/tab-separated-values, 32 data points
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