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  • 1
    Electronic Resource
    Electronic Resource
    Paleomagnetism of Pleistocene widespread tephra deposits and its implication for tectonic rotation in central Japan (2003)
    Melbourne, Australia : Blackwell Science Pty
    The @island arc 12 (2003), S. 0 
    Details
    ISSN: 1440-1738
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Abstract  A single layer of widespread tephra deposits possibly can provide an instantaneous record of the past geomagnetic field and potentially can indicate even a small-scale tectonic rotation compared to a range of geomagnetic secular variations. We report paleomagnetic data of the Ebisutoge–Fukuda tephra, which is dated at approximately 1.8 Ma and is distributed in central Japan between the Osaka–Kyoto area and the Boso Peninsula. The Fukuda volcanic ash layer and its correlative ash deposits in the Osaka–Kyoto area, near Lake Biwa and in the Mie and Niigata areas yield identical site mean declinations of approximately −170° after tilt correction, whereas moderate inclination shallowing is observed in the upper unit at several localities. Anisotropy measurements both of low-field magnetic susceptibility and of anhysteretic remanent magnetization suggest that the inclination shallowing results from the biased alignment of magnetic grains, which were deposited in the fluvial environment. The source volcanic unit, Ebisutoge pyroclastic deposits in the Takayama area, yields a mean declination of approximately −155°, showing clockwise deflection from the magnetic directions of the correlative tephra deposits. These results suggest that no significant rotation occurred between the Osaka–Kyoto, Mie and Niigata areas, but that the Takayama area suffered a clockwise rotation in respect to the other areas during the Quaternary. This rotation might have been caused under an east–west stress field associated with the collision of the Okhotsk Plate with the Eurasia Plate.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1440-1738.2003.00378.x
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Stratigraphy of multiple piston-core sediments for the last 30,000 years from Lake Biwa, Japan (2000)
    Springer
    Journal of paleolimnology 23 (2000), S. 185-199 
    Details
    ISSN: 1573-0417
    Keywords: Lake Biwa ; piston core ; volcanic ash ; magnetic susceptibility ; tephrostratigraphy ; sedimentation rate ; paleoenvironment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Notes: Abstract Analysis of seven piston cores obtained from three sites in Lake Biwa provide a detailed stratigraphy of the lake sediments for the last 30 kyrs. Description of lithology and measurement of magnetic susceptibility reveal occurrence of volcanic ashes at ten horizons, that were visually observed or microscopically found from clayey sediments. Most ash layers are observed in multiple cores from the three sites and also in earlier cores, establishing correlation and age assignment of the core sediments. This result demonstrates usefulness of magnetic susceptibility data in finding dispersed volcanic ashes. The age-depth curves deduced from published tephra ages show that significant difference in sedimentation rates occurs in Lake Biwa. The central part of the depression is characterized by homogeneous sediments deposited with a high sedimentation rate. The 250-m-thick lacustrine clay in this sub-basin has great potential for high-resolution study of the past environment and paleomagnetism for the last 0.5 Myr.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1008079418715
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    Paper (German National Licenses)
    Fulltext
  • 3
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    Mitochondrial SSBP1 protects cells from proteotoxic stresses by potentiating stress-induced HSF1 transcriptional activity (2015)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2015-03-14
    Description: Article Heat shock induces proteotoxic stress, and the cellular response is mediated by heat-shock factor 1 (HSF1). Here, Tan et al. show that following heat shock, mitochondrial SSBP1 translocates to the nucleus and binds HSF1 to enhance the expression of chaperones and support the maintenance of mitochondrial function. Nature Communications doi: 10.1038/ncomms7580 Authors: Ke Tan, Mitsuaki Fujimoto, Ryosuke Takii, Eiichi Takaki, Naoki Hayashida, Akira Nakai
    Electronic ISSN: 2041-1723
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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    PAPER CURRENT
  • 4
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    Erratum: Mitochondrial SSBP1 protects cells from proteotoxic stresses by potentiating stress-induced HSF1 transcriptional activity (2015)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2015-04-19
    Description: Erratum Nature Communications doi: 10.1038/ncomms7964 Authors: Ke Tan, Mitsuaki Fujimoto, Ryosuke Takii, Eiichi Takaki, Naoki Hayashida, Akira Nakai
    Electronic ISSN: 2041-1723
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General , Physics
    Published by Nature Publishing Group (NPG)
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  • 5
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    Paleomagnetic measurements on sediment core BDP93-1 (1996)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: Baikal Drilling Project; BDP; BDP1993; BDP93-1; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DRILL; Drilling/drill rig; Magnetometer, cryogenic; NRM, Inclination; NRM, Inclination after demagnetization; NRM, Intensity; NRM, Intensity after demagnetization; Sampling/drilling in lake; Single sample demagnetization
    Type: Dataset
    Format: text/tab-separated-values, 192 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    Magnetostratigraphy of ODP Leg 117 sites (1991)
    PANGAEA
    In:  Supplement to: Hayashida, Akira; Bloemendal, Jan (1991): Magnetostratigraphy of Leg 117 sediments from the Owen Ridge and the Oman Margin, western Arabian Sea. In: Prell, WL; Niitsuma, N; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 117, 161-179, https://doi.org/10.2973/odp.proc.sr.117.180.1991
    Details
    Publication Date: 2024-01-09
    Description: Magnetic measurements were made on discrete samples from the Neogene pelagic and hemipelagic sediments recovered during ODP Leg 117. Polarity zones, usually identified for uppermost 200 m, were correlated to the geomagnetic polarity time scale referring to biostratigraphic datums. Quality and resolution of the magnetostratigraphy was partly limited by the weak and relatively soft magnetic character of almost all intervals, and core disturbance by gas expansion at some Oman Margin sites. Clear polarity records of the Brunhes and Matuyama chrons (C1 to C2r) were observed at Sites 724 and 727 on the Oman continental margin. Extended reversal records of the Pliocene were found at Site 722 on the Owen Ridge and Site 728 on the Oman Margin, and correlated to the Gauss to Gilbert chrons (C2A to C3).
    Keywords: 117-721A; 117-721B; 117-722A; 117-722B; 117-724B; 117-724C; 117-727A; 117-728A; 117-731A; Arabian Sea; DRILL; Drilling/drill rig; Joides Resolution; Leg117; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 6 datasets
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Stratigraphy of ODP Leg 117 sites (1991)
    PANGAEA
    In:  Supplement to: Spaulding, Stacia A; Bloemendal, Jan; Hayashida, Akira; Hermelin, J Otto R; Kameo, Koji; Kroon, Dick; Nigrini, Catherine A; Sato, Tokiyuki; Steens, Tineke N F; Takayama, Toshiaki; Troelstra, Simon (1991): Magnetostratigraphic and biostratigraphic synthesis, Leg 117, Arabian Sea. In: Prell, WL; Niitsuma, N; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 117, 127-145, https://doi.org/10.2973/odp.proc.sr.117.186.1991
    Details
    Publication Date: 2024-01-09
    Description: During the late early Miocene to early middle Miocene, the Owen Ridge was uplifted to a sufficient height as to be above the realm of turbidite deposition. Monsoonal-induced upwelling appears to have been initiated during the Miocene. On the Oman Margin, the effect of upwelling on the microplankton was established by the middle Miocene. However, the effects of upwelling on the Owen Ridge region were not realized until later, in the early late Miocene. A transition in the upwelling regime took place between the Pliocene and Pleistocene. While the Miocene and Pliocene sediments are dominated by the siliceous component, the Pleistocene sediments seem to be dominated by the calcareous component.
    Keywords: 117-721A; 117-721B; 117-722A; 117-722B; 117-723A; 117-724A; 117-724B; 117-725C; 117-726A; 117-728A; 117-729A; 117-730A; 117-731A; Arabian Sea; DRILL; Drilling/drill rig; Joides Resolution; Leg117; Ocean Drilling Program; ODP
    Type: Dataset
    Format: application/zip, 11 datasets
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    DATA PANGAEA
  • 8
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    (Table 1) Polarity boundaries observed in ODP Leg 127/128 sites (1992)
    PANGAEA
    Details
    Publication Date: 2024-01-09
    Description: We present the magnetostratigraphic data for Sites 794, 795, 797, 798, and 799 in the Japan Sea. APC cores from these sites record the polarity sequence for the Pliocene-Pleistocene period. The intensity of the magnetization decreases with depth by more than an order of magnitude, and the low intensity samples tend to give scattered directional data. The cause of these phenomena is examined based on the correlation of the intensity with the bulk magnetic susceptibility.
    Keywords: 127-794; 127-795; 127-797; 128-798; 128-799; Age model; Ageprofile Datum Description; COMPCORE; Composite Core; DEPTH, sediment/rock; Event label; Japan Sea; Joides Resolution; Leg127; Leg128; Ocean Drilling Program; ODP
    Type: Dataset
    Format: text/tab-separated-values, 110 data points
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    DATA PANGAEA
  • 9
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    (Table 1) Rock magnetic properties of the sediment samples from ODP Hole 127-797B (1992)
    PANGAEA
    In:  Supplement to: Torii, Masayuki; Hayashida, Akira; Vigliotti, Luigi; Wippern, Jobst J M (1992): Rock magnetic properties of sediments from Site 797, Japan Sea. In: Tamaki, K; Suychiro, K; Allan, J; McWilliams, M; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 127/128(2), 947-957, https://doi.org/10.2973/odp.proc.sr.127128-2.213.1992
    Details
    Publication Date: 2024-01-09
    Description: Paleomagnetic and rock magnetic studies of the sediment samples from Site 797 were carried out. Thermal demagnetization was found to be more effective in removing secondary overprinting than alternating field demagnetization. Production of new magnetic minerals during the thermal treatment was frequently observed and made thorough demagnetization difficult, however. Thermal demagnetization of orthogonal IRM's suggests that magnetite and pyrrhotite are common magnetic minerals in these sediments. The Lowrie-Fuller test and xARM/x ratio show apparent grain size of the magnetic minerals to be that of single-domain to small multi-domain state. A downcore decrease of rock magnetic parameters such as ARM, IRM, and xARM/x ratio in the upper half of the hole indicates progressive diagenetic dissolution of finer magnetic minerals. In the lower part where igneous rocks intruded, production of magnetic minerals is suggested by discontinuous change of the downcore trend, which may have brought remagnetization of the sediment samples.
    Keywords: 127-797B; Anhysteretic remanent magnetization, Intensity, per unit mass; ARM, median destructive field of anhysteretic remanent magnetization; ARM, Susceptibility, per unit mass; DEPTH, sediment/rock; Difference; DRILL; Drilling/drill rig; Dry mass; DSDP/ODP/IODP sample designation; IRM, median destructive field of isothermal remanent magnetization; Isothermal remanent magnetization, Intensity, per unit mass; Japan Sea; Joides Resolution; Leg127; Ocean Drilling Program; ODP; Ratio; Sample code/label; Sample comment; Silt-Skewness; Susceptibility, specific; Type
    Type: Dataset
    Format: text/tab-separated-values, 463 data points
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    DATA PANGAEA
  • 10
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    (Table 2) Age model control points, and CaCO3 and TOC accumulation rates of ODP Leg 167 sites (1997)
    PANGAEA
    In:  Supplement to: Ravelo, Ana Christina; Lyle, Mitchell W; Koizumi, Itaru; Caulet, Jean-Pierre; Fornaciari, Eliana; Hayashida, Akira; Heider, Franz; Hood, Julie A; Hovan, Steven A; Janecek, Thomas R; Janik, Aleksandra G; Stax, Rainer (1997): Pliocene carbonate accumulation along the California Margin. Paleoceanography, 12(6), 729-741, https://doi.org/10.1029/97PA02525
    Details
    Publication Date: 2024-01-09
    Description: Recent modeling studies call on increased ocean heat transport to explain high-latitude warming observed for intervals throughout the middle Pliocene. Possible vehicles for ocean heat transport are the poleward arms of the subtropical gyres. Sites from the California margin (Ocean Drilling Program Leg 167) provide monitors of wind field within the eastern arm of the gyre which may be an indication of basin-wide subtropical gyral strength. At most sites (water depths from 1106 to 4212 m) CaCO3 mass accumulation rate (MAR) was highest in the middle Pliocene (3.5-2.0 Ma). This high CaCO3 MAR 'event' is attributed primarily to higher CaCO3 production due to higher offshore upwelling associated with the zone of the greatest wind stress curl. Thus, in the middle Pliocene, there was enhanced wind stress curl along the California margin, and possibly enhanced North Pacific sub-tropical gyral circulation and meridional ocean heat advection.
    Keywords: 167-1010; 167-1011; 167-1012; 167-1013; 167-1014; 167-1016; 167-1017; 167-1018; 167-1019; 167-1020; 167-1021; Accumulation rate, calcium carbonate; Accumulation rate, total organic carbon; AGE; Age, maximum/old; Age model; Ageprofile Datum Description; Calcium carbonate; Carbon, organic, total; COMPCORE; Composite Core; Density, dry bulk; Depth, composite; Depth, composite bottom; Depth, composite top; DEPTH, sediment/rock; Elevation of event; Event label; Joides Resolution; Latitude of event; Leg167; Longitude of event; North Pacific Ocean; Nuttallides rugosa, δ13C; Ocean Drilling Program; ODP; Sedimentation rate
    Type: Dataset
    Format: text/tab-separated-values, 1353 data points
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    DATA PANGAEA
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