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  • 1
    Electronic Resource
    Electronic Resource
    Middle Miocene to Pleistocene magneto-biostratigraphy of ODP Sites 1150 and 1151, northwest Pacific: Sedimentation rate and updated regional geological timescale (2004)
    Melbourne, Australia : Blackwell Science Pty
    The @island arc 13 (2004), S. 0 
    Details
    ISSN: 1440-1738
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Abstract  Shipboard and shore-based investigation on siliceous and calcareous microfossil biostratigraphy, magneto-stratigraphy and tephrostratigraphy identified numerous datum events from the sedimentary sequences of Sites 1150 and 1151 drilled on the forearc basin of northern Japan by the Ocean Drilling Program Leg 186. Some 83 datum events were selected to construct new age–depth models for the sites. Based on the reliable magneto-stratigraphy from the Pleistocene to the Upper Miocene, which were correlated to the standard geomagnetic polarity timescale, and on excellent records of diatom and radiolarian biostratigraphy throughout the sequences, the shipboard age model was revised. Major revisions referred to stratigraphic position of the Miocene–Pliocene boundary that has been shifted more than 200 m downward in each sequence. The age–depth relations of the forearc sites represent drastic changes in the sedimentation rate—extremely high (40 cm/k.y. on average) in the Early Pliocene and low (less than 2 cm/k.y. on average) in the Middle Miocene—and several hiatuses exist throughout the sequence. The drastic changes can be related mostly to changes in diatom sedimentation and the tectonics of the Japanese Island Arc. Local ages for some foraminiferal, calcareous nannofossil and radiolarian bioevents are estimated from the age–depth models at each site. These newly calibrated bioevents and biozones as well as established diatom biostratigraphy are incorporated into the updated magneto-biochronologic timescale, which will contribute to an improvement in biochronologic accuracy of Neogene sediments in northern Japan and adjacent areas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1440-1738.2003.00426.x
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Rock magnetism and paleomagnetic stratigraphy of forearc sediments of the Japan Trench, ODP Sites 1150 and 1151 (2004)
    Melbourne, Australia : Blackwell Science Pty
    The @island arc 13 (2004), S. 0 
    Details
    ISSN: 1440-1738
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Abstract  Magnetic measurements were carried out to investigate rock magnetic properties and paleomagnetic directions of late and middle Miocene sediments recovered from the land side of the Japan Trench during the Ocean Drilling Program Leg 186. Because the low coercive component in natural remanent magnetization (NRM) normalized by anhysteretic remanent magnetization shows that the drilling-induced magnetization is severe in the sections obtained by the advanced hydraulic piston coring method, careful analyses of demagnetization of NRM using the ‘demagnetization plane’ were carried out to decompose the direction and intensity. Magnetostratigraphic correlation down to the upper Miocene, supplemented by biostratigraphic data, revealed that the sedimentation rates are characterized by drastic changes, with the early Pliocene having the highest rate. This high sedimentation rate is related to the subsidence of the southern deep-sea terrace of the Japan Trench.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1440-1738.2003.00420.x
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Earthquake-enhanced dissolved carbon cycles in ultra-deep ocean sediments (2023)
    Nature Research
    Details
    Publication Date: 2024-03-01
    Description: Hadal trenches are unique geological and ecological systems located along subduction zones. Earthquake-triggered turbidites act as efficient transport pathways of organic carbon (OC), yet remineralization and transformation of OC in these systems are not comprehensively understood. Here we measure concentrations and stable- and radiocarbon isotope signatures of dissolved organic and inorganic carbon (DOC, DIC) in the subsurface sediment interstitial water along the Japan Trench axis collected during the IODP Expedition 386. We find accumulation and aging of DOC and DIC in the subsurface sediments, which we interpret as enhanced production of labile dissolved carbon owing to earthquake-triggered turbidites, which supports intensive microbial methanogenesis in the trench sediments. The residual dissolved carbon accumulates in deep subsurface sediments and may continue to fuel the deep biosphere. Tectonic events can therefore enhance carbon accumulation and stimulate carbon transformation in plate convergent trench systems, which may accelerate carbon export into the subduction zones.
    Type: Article , PeerReviewed
    Format: text
    Format: text
    Format: other
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 4
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    Report of Multi-Channel Seismic Reflection and Submersible Shinkαi 6500 Studies at Kyushu-Palau Ridge (2019)
    Details
    Publication Date: 2021-05-19
    Description: The Kyushu-Palau Ridge has the inflection point at about 24゜N.　In the northern part of the ridge, north of 24゜N, it tends NNW-SSE, whereas it runs along a NNE-SSW direction further south, the southern part. Two multi-channel seismic reflection profiles across the Kyushu-Palau Ridge at both part were examined. Both profiles document the rift architecture of the Paleo Kyushu-Palau Ridge. The submersible Shinlwi 6500 dive was performed to observe the acoustic basement exposed in the Sui-shin Depression. Submersible observation revealed that the acoustic basement is composed of consolidated hemipelagic sedimentary rock The Kyushu-Palau Ridge has the inflection point at about 24゜N. In the northern part.of the ridge, north of 24゜N, it tends NNW-SSE, whereas it runs along a NNE-SSW direction further south, the southern part. Two multi-channel seismic reflection profiles across the Kyushu-Palau Ridge at both part were examined. Both profiles document the rift architecture of the Paleo Kyushu-Palau Ridge. The submersible Shinlwi 6500 dive was performed to observe the acoustic basement exposed in the Sui-shin Depression. Submersible observation revealed that the acoustic basement is composed of consolidated hemipelagic sedimentary rocks.
    Description: Published
    Repository Name: AquaDocs
    Type: Journal Contribution , Refereed
    Format: pp. 85-93
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    PAPER (OA)
  • 5
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    Shear strength measurements from IODP Hole 333-C0012D (2012)
    PANGAEA
    In:  SIO7 Data Center, J-CORES Database; Ocean Drilling Program, Center for Deep Earth Exploration (JAMSTEC)
    Details
    Publication Date: 2023-12-02
    Keywords: 333-C0012D; Chikyu; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Exp333; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; NanTroSEIZE Stage 2: Subduction Inputs 2 and Heat Flow; Penetration strength; Pocket Penetrometer; Sample code/label; Shear strength, primary; Time Stamp
    Type: Dataset
    Format: text/tab-separated-values, 276 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    Moisture and density (MAD) measured on IODP Hole 333-C0012F (2012)
    PANGAEA
    In:  SIO7 Data Center, J-CORES Database; Ocean Drilling Program, Center for Deep Earth Exploration (JAMSTEC)
    Details
    Publication Date: 2023-12-02
    Keywords: 333-C0012F; Calculated; Calculated (Blum, 1997); Chikyu; Density; Density, dry bulk; Density, grain; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Exp333; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; IODP Method C (Blum, 1997); Mass, porewater; Mass, solids; NanTroSEIZE Stage 2: Subduction Inputs 2 and Heat Flow; Porosity, fractional; Salt content; Sample, dry mass; Sample code/label; Sample code/label 2; Sample volume; Time Stamp; Void Ratio description; Volume, dry sample; Volume, porewater; Volume, salt; Volume, solids; Volume, wet sample; Water content, dry mass; Water content, wet mass; Wet mass
    Type: Dataset
    Format: text/tab-separated-values, 25 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    XRF-core logger measurements from IODP Hole 333-C0012F (2012)
    PANGAEA
    In:  SIO7 Data Center, J-CORES Database; Ocean Drilling Program, Center for Deep Earth Exploration (JAMSTEC)
    Details
    Publication Date: 2023-12-02
    Keywords: 333-C0012F; Aluminium oxide; Calcium oxide; Chikyu; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Exp333; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Iron oxide, Fe2O3; Loss on ignition; Magnesium oxide; Manganese oxide; Muffel furnace; NanTroSEIZE Stage 2: Subduction Inputs 2 and Heat Flow; Phosphorus pentoxide; Potassium oxide; Sample code/label; Silicon dioxide; Sodium oxide; Time Stamp; Titanium dioxide; X-ray fluorescence (XRF)
    Type: Dataset
    Format: text/tab-separated-values, 14 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    MSCL measurements from IODP Hole 333-C0012C (2012)
    PANGAEA
    In:  SIO7 Data Center, J-CORES Database; Ocean Drilling Program, Center for Deep Earth Exploration (JAMSTEC)
    Details
    Publication Date: 2023-12-02
    Keywords: 333-C0012C; Chikyu; Color, a*; Color, b*; Color, L*, lightness; Color, X; Color, Y; Color, Z; Color code HLS-system; Color scanner, MSCL; Density, wet bulk; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Exp333; Impedance, specific; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Magnetic susceptibility, volume; Multi-Sensor Core Logger; Munsell Color System (1994); NanTroSEIZE Stage 2: Subduction Inputs 2 and Heat Flow; Natural gamma ray; Porosity, fractional; Resistivity, electrical; Sample code/label; Time Stamp; Velocity, compressional, amplitude; Velocity, compressional wave
    Type: Dataset
    Format: text/tab-separated-values, 62988 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
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    CNS-analysis from IODP Hole 333-C0012G (2012)
    PANGAEA
    In:  SIO7 Data Center, J-CORES Database; Ocean Drilling Program, Center for Deep Earth Exploration (JAMSTEC)
    Details
    Publication Date: 2023-12-02
    Keywords: 333-C0012G; Calcium carbonate; Calculated; Carbon, inorganic, total; Carbon, total; Carbon analyser; Chikyu; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Exp333; Finnigan Delta Plus mass spectrometer/ Flash 1112 EA elemental analyser; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; NanTroSEIZE Stage 2: Subduction Inputs 2 and Heat Flow; Nitrogen, total; Sample code/label; Sample code/label 2; Sample comment; Sample volume; Sulfur, total; Time Stamp
    Type: Dataset
    Format: text/tab-separated-values, 40 data points
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    DATA PANGAEA
  • 10
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    XRF-core logger measurements from IODP Hole 333-C0012G (2012)
    PANGAEA
    In:  SIO7 Data Center, J-CORES Database; Ocean Drilling Program, Center for Deep Earth Exploration (JAMSTEC)
    Details
    Publication Date: 2023-12-02
    Keywords: 333-C0012G; Aluminium oxide; Calcium oxide; Chikyu; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Exp333; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Iron oxide, Fe2O3; Loss on ignition; Magnesium oxide; Manganese oxide; Muffel furnace; NanTroSEIZE Stage 2: Subduction Inputs 2 and Heat Flow; Phosphorus pentoxide; Potassium oxide; Sample code/label; Silicon dioxide; Sodium oxide; Time Stamp; Titanium dioxide; X-ray fluorescence (XRF)
    Type: Dataset
    Format: text/tab-separated-values, 168 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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