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  • 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations  (1)
  • 301-U1301C; 301-U1301D; Allanite; Amphibole; Andradite; Apatite; Chromspinel; Clinopyroxene; Cummingtonite; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Energy dispersive X-ray analysis, EDAX; Epidote group minerals; Event label; Exp301; Garnet; Ilmenite; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Juan de Fuca Hydrogeology; Juan de Fuca Ridge, North Pacific Ocean; Mineral name; Minerals, polymorph; Monazite; Olivine; Orthopyroxene; Pumpellyite; Sample code/label; Titanite; Tourmaline; Zircon  (1)
  • Accumulation rate, alkenone C37; Accumulation rate, total organic carbon; AGE; Alkenone, C37 normalized to total organic carbon; Alkenone, unsaturation index UK37; Calcium carbonate; Carbon, organic, total; Carbon/Nitrogen ratio; Density, dry bulk; DEPTH, sediment/rock; KT05-7; KT05-7_PC-02; Nitrogen, total; PC; PC-02; Period; Piston corer; Sample code/label; Sea surface temperature, annual mean; Sedimentation rate; Tansei Maru; West Pacific Ocean  (1)
  • 2005-2009  (3)
  • 1980-1984
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Keywords
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Year
  • 1
    facet.materialart.
    Unknown
    Anomalous crustal movements with low seismic efficiency - Campi Flegrei, Italy and some examples in Japan (2006)
    INGV
    Details
    Publication Date: 2019-11-04
    Description: Campi Flegrei is a unique volcanic region located near Naples, Italy. Anomalous crustal movements at Pozzuoli in Campi Flegrei have been documented since the Roman period. The movements were gradual and have continued to the present, occasionally accompanying swarms of local earthquakes and volcanic eruptions. Generally the movements proceed with low seismicity. After the 1538 eruption of Monte Nuovo, Pozzuoli had subsided monotonously, but it changed to uplift abruptly in 1969. The uplift accelerated in 1983 and 1984 reaching more than 2 m, and thereafter began to subside. Many discussions of this event have been published. In Japan, we have examples of deformations similar to those at Campi Flegrei, mainly in volcanic areas, and rarely in non-volcanic areas. The former includes Iwojima, Miyakejima and Aira caldera while the latter is represented by Cape Omaezaki. Iwojima is a volcano island, and its secular uplifts since the 18th century are recognized as an unusual event. Miyakejima volcano and Aira caldera exhibited anomalous movements with low seismicity after their eruptions. Cape Omaezaki is not situated in volcanic zone but near a subduction zone, and gradually and continuously subsides as a precursor to a large earthquake. In such cases as Campi Flegrei and the Japanese localities, we would question whether the deformations are accompanied by normal seismicity or low seismicity. To examine quantitatively the relationship between seismicity and related deformation, seismic efficiency is generally useful. The crustal deformations in all the regions cited above are characterized by exceptionally low seismic efficiencies. In the present paper, the deformations at Pozzuoli and Iwojima are mainly described and a comparative discussion among these and other localities in Japan is supplemented. It is concluded that such anomalous phenomena in volcanic areas are attributable to peculiar rheological aspects of the material composing the local upper crust, and the deformation in a non-volcanic area is of tectonic origin.
    Description: Published
    Description: JCR Journal
    Description: open
    Keywords: crustal movements ; low seismic efficiency ; 04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations ; 04. Solid Earth::04.06. Seismology::04.06.04. Ground motion
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Format: 391986 bytes
    Format: application/pdf
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  • 2
    facet.materialart.
    Unknown
    (Table 1) Heavy minerals in silt and sand samples of IODP Site 301-U1301 (2009)
    PANGAEA
    In:  Supplement to: Kiyokawa, Shoichi; Yokoyama, Kazumi (2009): Provenance of turbidite sands from IODP EXP 1301 in the northwestern Cascadia Basin, western North America. Marine Geology, 260(1-4), 19-29, https://doi.org/10.1016/j.margeo.2009.01.003
    Details
    Publication Date: 2023-07-07
    Description: The northwestern Cascadia Basin of western North America accumulated high-sedimentation-rate sequences during the Pleistocene sea-level low-stands. The continental shelf was largely exposed at that time, and rivers and estuaries delivered large sediment fluxes directly to the deep ocean. The IODP EXP1301 core, which was taken from the middle portion of the Cascadia Basin, is well preserved and exhibits the deeper and - more distal sedimentary facies. The lithology in this location is composed of two units, 1) hemipelagic mud with a thin sand layer and 2) thick, coarsening upward silt-sand turbidites with a small proportion of granules at the top. We will focus on the detailed sand-grain proportions in order to understand the origin of these sediments. We determined the modal proportions of the heavy minerals, and the chemical composition of olivine and orthopyroxene in fourteen samples. These are characterized by an abundance of amphibole, pyroxenes and epidote, and the presence of minerals derived from peridotite. There is no drastic change in the modal and mineral compositions of the sands and silts between the turbidite and hemipelagic sequences. There were two probable drainage systems on the continent, the Frazer and Columbia rivers, which shed turbidites into the Cascadia Basin after 1.6 Ma, especially at 0.46-0.76 Ma. Based on a comparison of the modal and mineral compositions, the Northern Cascadia Basin has been supplied with sediments, mainly from the Frazer River, through the Straits of Juan de Fuca, by Pleistocene to Holocene turbidites.
    Keywords: 301-U1301C; 301-U1301D; Allanite; Amphibole; Andradite; Apatite; Chromspinel; Clinopyroxene; Cummingtonite; DRILL; Drilling/drill rig; DSDP/ODP/IODP sample designation; Energy dispersive X-ray analysis, EDAX; Epidote group minerals; Event label; Exp301; Garnet; Ilmenite; Integrated Ocean Drilling Program / International Ocean Discovery Program; IODP; Joides Resolution; Juan de Fuca Hydrogeology; Juan de Fuca Ridge, North Pacific Ocean; Mineral name; Minerals, polymorph; Monazite; Olivine; Orthopyroxene; Pumpellyite; Sample code/label; Titanite; Tourmaline; Zircon
    Type: Dataset
    Format: text/tab-separated-values, 277 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
  • 3
    facet.materialart.
    Unknown
    (Table 1) Ages, dry bulk densities, and UK'37, sea surface temperatures, contents and fluxes of C37 alkenone of sediment core KT05-7_PC-02 (2009)
    PANGAEA
    Details
    Publication Date: 2024-01-25
    Keywords: Accumulation rate, alkenone C37; Accumulation rate, total organic carbon; AGE; Alkenone, C37 normalized to total organic carbon; Alkenone, unsaturation index UK37; Calcium carbonate; Carbon, organic, total; Carbon/Nitrogen ratio; Density, dry bulk; DEPTH, sediment/rock; KT05-7; KT05-7_PC-02; Nitrogen, total; PC; PC-02; Period; Piston corer; Sample code/label; Sea surface temperature, annual mean; Sedimentation rate; Tansei Maru; West Pacific Ocean
    Type: Dataset
    Format: text/tab-separated-values, 1013 data points
    Location Call Number Expected Availability
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    DATA PANGAEA
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