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  • 1
    Book
    Book
    Multi-channel seismic reflection data across the Japan trench (1979)
    Tokyo : Ocean Research Institute, University of Tokyo
    Details Availability
    Type of Medium: Book
    Pages: 21 S , chiefly ill , 25 x 35 cm
    Series Statement: IPOD-Japan basic data series no. 3
    DDC: 551.2/2/0952
    Language: English
    Note: Bibliography: leaf [22]
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  • 2
    Electronic Resource
    Electronic Resource
    Neogene geological history of the Tohoku Island Arc system (1977)
    Springer
    Journal of oceanography 33 (1977), S. 297-310 
    Details
    ISSN: 1573-868X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The Pacific-type orogeny in the Tohoku Island Arc is discussed using marine geological and geophysical data from both Pacific and Japan Sea along the Tohoku region. The Tohoku Arc is divided into three belts; inner volcanic and sedimentary belt, intermediate uplifted belt and outer sedimentary trench belt. Thick Neogene sediments which are distinguished in several layers by continuous seismic reflection profiling occur on both sides of the intermediate belt. The dominant structural trend of the Neogene layers is approximately parallel to the coast line and to the axis of the Japan Trench and has a extension of approximately 100 km in each unit on the Pacific side. The trench slope break is an uplifted zone of Neogene layers. The structural trend of the upper continental slope and outer shelf is relative uplift of the landward side. Tilted block movement toward the west is the dominant structural trend on the Japan Sea side. Structural trends which can be seen in both the inner and outer belts may suggest horizontal compressional stress of east to west. Orogenesis and tectogenesis in the Tohoku Arc has been active since early Miocene or latest Oligocene. It may be implied that the Japan Trench was not present during Late Cretaceous to Paleogene, as is suggested by the volcanism of the Tohoku Arc. The basic framework of the present structure was formed during late Miocene to early Pliocene in both the inner and outer belts. Structural movements were reactivated during late Pleistocene.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02109575
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Unknown
    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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    DATA PANGAEA
  • 4
    facet.materialart.
    Unknown
    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 - 1 - Some problems concerning the mineralogy. Bulletin of the Geological Survey of Japan, 28(6), 351-358, https://www.gsj.jp/data/bull-gsj/28-06_01.pdf
    Details
    Publication Date: 2023-08-28
    Description: Manganese nodules from the Suiko Seamount exhibit the significant characteristics in mineral compositions. Well crystallized todorokite and birnessite, which are principal manganese mineral phase in nodules, only occur in the oxide layer directly incasing pebbles and coarse sand. The preferential formation of todorokite or birnessite phases seem to be principally controlled by the reaction rate of iron-manganese oxides with trace elements such as Cu, Ni, Co, Zn, Pb concentrated in nodules, rather than redox characteristics of sedimentary environment or mineralogical diagenetic process.
    Keywords: DEPTH, sediment/rock; Description; Dredge; DRG; Elevation of event; Event label; Hakuho-Maru; KH-68-3; KH68-3-9-6; KH68-3-9-7; KH68-3-9-9; Latitude of event; Longitude of event; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; Pacific Ocean; Sample ID; Uniform resource locator/link to image
    Type: Dataset
    Format: text/tab-separated-values, 9 data points
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    DATA PANGAEA
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