JaLCDOI 10.18926/ESR/55322
FullText URL esr_023_1_009_015.pdf
Author Takesue, Norito| Suzuki, Shigeyuki|
Abstract Analyzing of sedimentary facies and structure together with regional field mapping were studied in the mélange unit, upper Cretaceous Shimanto Belt, Wakayama Pref., SW Japan. The field survey was concentrated in the coast of Shiofuki-iwa, Miyama Complex, Hidakagawa Belt where soft deformations penetrate throughout the mélange unit. Brittle to ductile faults associated as later deformations are excluded. The mélange unit is subdivided into the Y-shear zone (YSZ) and P-foliation zone (PFZ). The YSZ is composed of thick lenticular sandstone (trends subparallel to the direction of the mélange), intense shear band (thin layer with concentrated prelithification shear deformation) and mudstone dominant mélange. The PFZ is composed of mudstone dominant mélange (associated with foliations which slightly oblique to the direction of the YSZ) and lenticular sandstone (slightly oblique to the direction of the YSZ). The intense shear band separates the YSZ and PFZ. Preserved radiolarian fossils free from deformation in the intense shear band is the evidence of the prelithification shear deformation in the mélange. A remarkable-fact is that the structures of mélange unit are formed under sinistral sense of shear. The mélange unit in the Shiofuki-iwa is ascribed to be formed by sinistral sense of shear during sediments were prelithified.
Keywords mélange Shimanto Belt Y-shear zone P-foliation zone intense shear band prelithification structures
Publication Title Okayama University Earth Science Report
Published Date 2016-12-27
Volume volume23
Issue issue1
Start Page 9
End Page 15
ISSN 1340-7414
language 英語
Copyright Holders © 2016 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
File Version publisher
JaLCDOI 10.18926/ESR/56691
Title Alternative Non-calcareous beachrock found in Akagurisaki, Ohi Town, Fukui Prefecture
FullText URL esr_025_001_005.pdf
Author Suzuki, Shigeyuki| Azuma, Yoichi| Deyama, Yasuyo| Yukawa, Hirokazu| Usui, Mayumi|
Abstract Beachrock which was formed about 0.5 meter higher than high tide is found in Akagurisaki, Ohi Town, Fukui Prefecture. The outcrops always get wet by spring water. The sediments are composed of well sorted rounded gravels and sands but calcareous shell is not found at all. Intergranular space is occupied by white amorphous cement. Magnesium and silicon rich composition of the cement is obtained by EPMA analysis. There is a conjecture that the magnesium rich cement was precipitated in spite of solution of calcareous shell under saturated state by spring water, because calcium has a higher tendency to ionize than magnesium.
Keywords Beachrock Akagurisaki non-calcareous cement ionization tendency
Publication Title Okayama University Earth Science Report
Published Date 2018-12-27
Volume volume25
Issue issue1
Start Page 1
End Page 5
ISSN 1340-7414
language 日本語
Copyright Holders © 2018 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
File Version publisher
JaLCDOI 10.18926/ESR/56694
FullText URL esr_025_031_038.pdf
Author Amano, Hideki| Suzuki, Shigeyuki| Sato, Masaru| Yanagida, Makoto|
Abstract The study area is situated in Japan Sea side margin of the Shakotan Peninsula, Hokkaido, Japan, where MIS5e Terrace is preserved along the cost. Numbers of tight drilling have done to establish new method for terrace analysis. Buried wave cut terrace and sea cliff (when the MIS5e Terrace was formed) are reconstructed by distribution of the terrace deposits and these bottom of unconformity planes. The precise site and altitude of former shoreline was also obtained. Altitudes of the former shoreline from the 7 sections are almost the same 22 to 27m in height. Previous data of the height of shoreline are obtained from the topographic MIS5e Terrace surface. The altitudes have variation from 30m to 60m. It suggests that the traditional method for the MIS5e terrace analysis had some errors in the study area.
Keywords MIS5e marine terrace terrace deposits tight drilling shoreline
Publication Title Okayama University Earth Science Report
Published Date 2018-12-27
Volume volume25
Issue issue1
Start Page 31
End Page 38
ISSN 1340-7414
language 英語
Copyright Holders © 2018 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
File Version publisher
JaLCDOI 10.18926/ESR/56695
FullText URL esr_025_039_048.pdf
Author Knittel, Ulrich| Walia, Monika| Suzuki, Shigeyuki| Lee, Yuan-Hsi|
Abstract The high-P/low-T Sanbagawa Metamorphic Belt that traverses SW Japan, has been subdivided into two belts thought to have been metamorphosed at ca. 120 Ma and at ca. 65 Ma (‘Sanbagawa Metamorphic Rocks’ and ‘Shimanto Metamorphic Rocks’). The subdivision was based on the assumption that metamorphism occurred at ca. 116 Ma, largely based on an early Rb-Sr isotope study and zircon data obtained for the eclogite unit of the Sanbagawa Belt, whereas in some parts of the belt detrital zircons of late Cretaceous age (90-80 Ma) were discovered. Analysis of detrital zircons sampled from two sites within the area considered to expose the older ‘Sanbagawa Metamorphic Rocks’, including the area investigated by the Rb-Sr study, reveals the presence of zircons younger than 95 Ma in all samples and some grains as young as 80 ± 4 Ma. It is therefore concluded that the Sanbagawa Belt is one single tectonic entity that formed in the Late Cretaceous though it contains older components, including fossiliferous clasts, older basic meta-volcanics and eclogite units that may record earlier metamorphic events.
Keywords U-Pb zircon dating Sanbagawa Metamorphic Belt Late Cretaceous Asemi River
Publication Title Okayama University Earth Science Report
Published Date 2018-12-27
Volume volume25
Issue issue1
Start Page 39
End Page 48
ISSN 1340-7414
language 英語
Copyright Holders © 2018 by Okayama University Earth Science Reports Editorial Committee All Rights Reserved
File Version publisher
JaLCDOI 10.18926/fest/54863
Title Alternative Evaluation of drop in official air temperature record at Okayama caused by relocation of observation field of Okayama Local Meteorological Observatory - By comparison with records observed at surrounding points -
FullText URL fest_022_061_064.pdf
Author Miura, Takeshi| Ueda, Yu| Morita, Hidenori| Chikamori, Hidetaka| Kurokawa, Masahiro| Nakashima, Yoshitaka| Oki, Yoko|
Abstract Statistical change in official temperature records at Okayama City caused by relocation of meteorological observation field of Meteorological Agency was evaluated. The observation field of Okayama local meteorological observatory was moved to the Tsushima Campus of Okayama University from the downtown area of Okayama City in March, 2015. Comparison between the air temperature records measured at meteorological agency station and the records at Tanjo Pond in Tsushima Campus, showed 0.56 ℃ drop in annual average before and after relocation. Moreover, comparison between the records of Okayama local meteorological observatory and that at the surrounding meteorological observing 9 stations showed 0.55 ℃ drop in annual average. Those results suggest that the relocation dropped annual average of air temperature by about 0.6 ℃.
Keywords Okayama Local Meteorological Observatory relocation drop in air temperature
Publication Title 岡山大学環境理工学部研究報告
Published Date 2017-03
Volume volume22
Issue issue1
Start Page 61
End Page 64
ISSN 2187-6940
language 日本語
File Version publisher
NAID 120005997444
Title Alternative Bulletin of Archaeological Research Center Okayama University 2016
FullText URL barc_2016.pdf
Author Yamaguchi, Yuji| Yamamoto, Etsuyo| Suzuki, Shigeyuki| Iwasaki, Shiho| 白石 純| Minami, Kentaro| Nozaki, Takahiro| 佐藤 朗| 二宮 和彦|
Publication Title 岡山大学埋蔵文化財調査研究センター紀要
Published Date 2018-03-28
Volume volume2016
language 日本語
File Version publisher
Pages 86
Title Alternative Bulletin of Archaeological Research Center Okayama University 2017
FullText URL 紀要2017.pdf
Author Nozaki, Takahiro| Minami, Kentaro| Yamamoto, Etsuyo| Suzuki, Shigeyuki| Yamaguchi, Yuji| Iwasaki, Shiho| 古環境センター| 吉田生物研究所|
Publication Title 岡山大学埋蔵文化財調査研究センター紀要
Published Date 2019-03-29
Volume volume2017
language 日本語
Copyright Holders Archaeological Research Center, Okayama University
File Version publisher
Pages v, 96 p.
Title Alternative UK’s Last ? European Parliamentary Election:Reading European Election Study 2019 data
FullText URL olj_69_3_(243_292).pdf
Author Narihiro, Takashi|
Publication Title Okayama Law Journal
Published Date 2020-02-26
Volume volume69
Issue issue3
Start Page 292
End Page 243
ISSN 0386-3050
language 日本語
File Version publisher
Author OKi, Yoko| Utsugi, Tomo|
Published Date 1998-02
Publication Title 岡山大学農学部学術報告
Volume volume87
Issue issue1
Content Type Departmental Bulletin Paper
Author Khan Md. H. R.| Mohiuddin M.| Rahman M.| Akhtar M. S.| Oki, Yoko| Adachi, Tadashi|
Published Date 2007-03-15
Publication Title 岡山大学環境理工学部研究報告
Volume volume12
Issue issue1
Content Type Departmental Bulletin Paper
Author Khan Md. H. R.| Rahman Md. K.| Rouf A. J. M. A.| Sattar G. S.| Akhtar M. S.| Oki, Yoko| Adachi, Tadashi|
Published Date 2007-03-15
Publication Title 岡山大学環境理工学部研究報告
Volume volume12
Issue issue1
Content Type Departmental Bulletin Paper
Author Akhtar M. Shahbaz| Oki, Yoko| Adachi, Tadashi| Khan Md. H. R.|
Published Date 2007-03-15
Publication Title 岡山大学環境理工学部研究報告
Volume volume12
Issue issue1
Content Type Departmental Bulletin Paper
Author Akhtar M. Shahbaz| Oki, Yoko| Adachi, Tadashi| Khan Md. H. R|
Published Date 2007-03-15
Publication Title 岡山大学環境理工学部研究報告
Volume volume12
Issue issue1
Content Type Departmental Bulletin Paper
Author Akhtar M. Shahbaz| Oki, Yoko| Adachi, Tadashi| Khan Md. H. R.|
Published Date 2007-03-15
Publication Title 岡山大学環境理工学部研究報告
Volume volume12
Issue issue1
Content Type Departmental Bulletin Paper
Author Oki, Yoko|
Published Date 2003-03
Publication Title 岡山大学環境理工学部研究報告
Volume volume8
Issue issue1
Content Type Departmental Bulletin Paper
Author Kamboh Maqsood Ahmed| Oki, Yoko| Adachi, Tadashi|
Published Date 2002-03-22
Publication Title 岡山大学環境理工学部研究報告
Volume volume7
Issue issue1
Content Type Departmental Bulletin Paper
Author Kamboh Maqsood Ahmed| Oki, Yoko| Adachi, Tadashi|
Published Date 2002-03-22
Publication Title 岡山大学環境理工学部研究報告
Volume volume7
Issue issue1
Content Type Departmental Bulletin Paper
Author Kamboh Maqsood Ahmed| Oki, Yoko| Adachi, Tadashi|
Published Date 2001-02-28
Publication Title 岡山大学環境理工学部研究報告
Volume volume6
Issue issue1
Content Type Departmental Bulletin Paper
Author Akhtar M.Shahbaz| Oki, Yoko| Adachi, Tadashi|
Published Date 2008-03
Publication Title 岡山大学環境理工学部研究報告
Volume volume13
Issue issue1
Content Type Departmental Bulletin Paper
Author Mikami, Teiji| Musashino, Makoto| Suzuki, shigeyuki|
Published Date 2002-09-20
Publication Title Okayama University Earth Science Report
Volume volume9
Issue issue1
Content Type Departmental Bulletin Paper