2025/02/05 更新

写真a

サシダラン キラン
SASIDHARAN KIRAN
SASIDHARAN KIRAN
所属
教育研究院 自然科学系 特任助教
理学部 特任助教
職名
特任助教
連絡先
メールアドレス
外部リンク

学位

  • Ph.D. in Geology ( 2024年3月 )

  • Masters in Applied Geology ( 2016年7月 )

  • Bachelors in Geology ( 2014年4月 )

研究キーワード

  • Precambrian Geology, Archaen life, Stromatolites, Feild Geology, Petrology, Petrography, Stable Isotope Geochemistry, Raman Specctroscopy of carbonaceous material, HIgh-end Micrsocopy analysis

研究分野

  • 自然科学一般 / 固体地球科学  / Precambrian Geology, Archaen life, Stromatolites, Feild Geology, Petrology, Petrography, Stable Isotope Geochemistry, Raman Specctroscopy of carbonaceous material

経歴(researchmap)

  • 新潟大学   理学部   特任助教

    2024年4月 - 現在

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    国名:日本国

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  • Indian Institute of Science, Bangalore   Centre for Earth Sciences   Project Assistant

    2016年10月 - 2019年9月

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    国名:インド

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経歴

  • 新潟大学   理学部   特任助教

    2024年4月 - 現在

  • 新潟大学   教育研究院 自然科学系   特任助教

    2024年4月 - 現在

学歴

  • 新潟大学   大学院自然科学研究科   Phd in Environmental Science and Technology

    2020年4月 - 2024年3月

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    国名: 日本国

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  • University of Mysore, Karnataka   Department of Geology   Masters in Applied Geology

    2014年7月 - 2016年7月

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    国名: インド

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  • Sree Narayana College, Varkala   Department of Geology   Bachelors in Geology

    2011年7月 - 2014年4月

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    国名: インド

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論文

  • Identification of Multiple Thermal Events in High‐Grade Metacarbonate Rocks Using Carbon Isotope Thermometry: An Example From the Sør Rondane Mountains, East Antarctica 査読

    M. Satish‐Kumar, Sasidharan Kiran, Fumiko Higashino, Tetsuo Kawakami, Tomokazu Hokada

    Geological Journal   2024年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Wiley  

    ABSTRACT

    Nine metacarbonate layers from the regionally metamorphosed terrane of the Sør Rondane Mountains in the Eastern Dronning Maud Land in East Antarctica were examined in detail for constraining the thermal events using carbon isotope exchange between dolomite/calcite and graphite. Equilibrium carbon isotope fractionation between dolomite and graphite suggested peak metamorphic temperature conditions reaching up to 802°C ± 29°C were estimated at the Balchenfjella locality, where multiple samples from six thick layers of metacarbonate rocks were examined. However, some of the samples exhibit lower carbon isotope fractionation reflecting the possibility of ultrahigh‐temperature metamorphic conditions, which is consistent with recent reports. Furthermore, several metacarbonate rock samples display large variations in δ<sup>13</sup>C<sub>VPDB</sub> values for graphite grains, despite dolomite and calcite showing homogeneous carbon and oxygen isotopic composition indicating signatures of retrograde metamorphism and fluid infiltration events. Detailed textural observation suggested alteration of δ<sup>13</sup>C<sub>VPDB</sub> values of graphite during retrograde metamorphism might have resulted due to the overgrowth of graphite crystals by the infiltration of low δ<sup>13</sup>C<sub>VPDB</sub>‐bearing fluids, the extent of alteration being a direct function of the fluid–rock ratio. Field evidence indicates the presence of carbonate veins cutting across the metacarbonate rocks suggesting that carbon isotope thermometry can also be utilised to understand the effect of external fluid infiltration. At Perlebandet locality the metamorphic temperature conditions were estimated to be around 915°C, whereas those from Tanngarden and Menipa gave lower temperature estimates. Detailed textural analysis of graphite in combination with isotopic composition provided clear evidence for retrograde events. Thus, our results provide tight constraints of peak and post‐peak metamorphic temperature conditions and a regional thermal structure for the Sør Rondane Mountains and further testify the usefulness of carbon isotope thermometry in polymetamorphic terrains.

    DOI: 10.1002/gj.5095

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  • Carbon isotopic composition of solid carbon and C–H–O fluid produced through the decomposition of stearic acid under HP-HT condition 査読

    Hideaki Kawamura, Hiroaki Ohfuji, Madhusoodhan Satish-Kumar, Sasidharan Kiran, Akio Suzuki

    High Pressure Research   44 ( 1 )   38 - 52   2023年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Informa UK Limited  

    DOI: 10.1080/08957959.2023.2297680

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  • Himalayan magnesite records abrupt cyanobacterial growth that plausibly triggered the Neoproterozoic Oxygenation Event 査読

    Prakash Chandra Arya, Claude Nambaje, S. Kiran, M. Satish-Kumar, K. Sajeev

    Precambrian Research   395   107129 - 107129   2023年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier BV  

    DOI: 10.1016/j.precamres.2023.107129

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  • 2.0 Ga orogenic graphite deposits and associated 13C-enriched meta-carbonate rocks from South China Craton: Implications for global Lomagundi event 査読

    Yihe Li, Madhusoodhan Satish-Kumar, Sasidharan Kiran, Chuanhui Wan, Jianping Zheng

    Geoscience Frontiers   13 ( 4 )   101409 - 101409   2022年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier BV  

    DOI: 10.1016/j.gsf.2022.101409

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  • Comparison between Raman spectra of carbonaceous material and carbon isotope thermometries in low-medium grade meta-carbonates: Implications for estimation of metamorphic temperature condition 査読

    S. Kiran, M. Satish-Kumar, Y. Nakamura, T. Hokada

    Precambrian Research   374   106656 - 106656   2022年6月

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    担当区分:筆頭著者   記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier BV  

    DOI: 10.1016/j.precamres.2022.106656

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  • A new inlet system for microscale carbon and oxygen stable isotope analysis using dual inlet isotope ratio mass spectrometer at Niigata University, Japan 査読

    M., Satish-Kumar, S., Kiran, M., Abe

    Science Reports of Niigata University   36   21 - 42   2021年3月

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    記述言語:英語   掲載種別:研究論文(大学,研究機関等紀要)  

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講演・口頭発表等

  • Evaluation of the biogenecity of 2.72 Ga titanite filled microtubular texture

    S., Kiran, Y., Nakamura, H, Ohfuji, M., Satish-Kumar

    Japan geoscience union (JpGU)  2024年 

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    記述言語:英語   会議種別:口頭発表(一般)  

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  • Application of Raman spectra of carbonaceous material and carbon isotope thermometry in low-medium grade metacarbonate from the Chitradurga Schist Belt, Dharwar Craton

    S., Kiran, M, Satish-Kumar, Y., Nakamura, T., Hokada

    International Conference of Gondwana Research (IAGR)  2023年 

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    記述言語:英語   会議種別:ポスター発表  

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  • An approach to understand the mode of formation of titanite microtube texture in Tumbiana Formation stromatolites, Pilbara Craton, western Australia

    S., Kiran, Y., Nakamura, M, Satish-Kumar, H., Ohfuji

    Japan Association of Mineralogical Sciences (JAMS)  2023年 

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    記述言語:英語   会議種別:口頭発表(一般)  

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  • Micro-Raman Spectroscopy of low grade carbonaceous materials and its evolution

    S., Kiran, Y., Nakamura, M, Satish-Kumar

    Japan geoscience union (JpGU)  2022年 

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    記述言語:英語   会議種別:口頭発表(一般)  

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  • Physical and chemical evolution of carbonaceous materials in Archean low to medium grade metasedimentary rocks

    S., Kiran, Y., Nakamura, H, Ohfuji, M., Satish-Kumar

    Japan Association of Mineralogical Sciences (JAMS)  2022年 

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    記述言語:英語   会議種別:口頭発表(一般)  

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  • The physico chemical evolution of carbonaceous material during low-grade metamorphism of Archean stromatolites by Raman spectroscopy and carbon isotopes.

    S., Kiran, M, Satish-Kumar, Y., Nakamura, T., Hokada, H, Ohfuji

    Japan Association of Mineralogical Sciences (JAMS)  2021年 

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    記述言語:英語   会議種別:口頭発表(一般)  

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  • A comparison between carbon isotope thermometry and Raman spectra of carbonaceous material (RSCM) thermometry in low-grade carbonate rocks from the Chitradurga Schist Belt, Dharwar Craton

    S., Kiran, M, Satish-Kumar, Y., Nakamura, H., Ohfuji

    Japan geoscience union (JpGU)  2021年 

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    記述言語:英語   会議種別:口頭発表(一般)  

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