研究者詳細 - 纐纈　佑衣

論文 - 纐纈　佑衣

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Melting and Evolution of Amphibole-Rich Back-Arc Abyssal Peridotites at the Mado Megamullion, Shikoku Basin 査読有り国際共著

Sen A., Snow J. E., Ohark Y., Hirauchi K., Kouketsu Y., Sanfilippo A., Basch V, Harigane Y., Fujii M., Okino K., Akizawa N.

GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 22 巻 ( 12 ) 2021年12月

マントル掘削でのみ解明される地球科学問題 : 生命惑星海洋プレートの今を理解する査読有り

Morishita Tomoaki, Fujie Gou, Hirauchi Ken-ichi, Katayama Ikuo, Kouketsu Yui, Kuroda Jun-ichiro, Okamoto Atsushi, Ono Shigeaki, Michibayashi Katsuyoshi, Morono Yuki, Yamamoto Shinji

JOURNAL OF GEOGRAPHY-CHIGAKU ZASSHI 130 巻 ( 4 ) 頁： 483 - 506 2021年8月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：公益社団法人東京地学協会

In the 1950s, the aim of the original mantle drilling projects was to obtain oceanic mantle samples in order to address the unanswered question of what constitutes the Earth's mantle. However, in the 21st century, it is widely accepted that the uppermost mantle is mainly composed of peridotite. Now, the challenge of mantle drilling is to understand crucial unsolved issues of earth science. Today's Earth is different from other planets due to the existence of life and plate tectonics. It is emphasized that mantle drilling is the only way to obtain the oceanic crust from top to bottom and an active mantle sample from an oceanic plate. The crucial issues that can only be addressed by mantle drilling are: (1) limits of life in an oceanic plate and its controlling factors, and (2) formation process of an oceanic plate and its modification. Modification of an oceanic plate, especially the weakening of plate strength, is required for plate tectonics. These two issues are interrelated. Long seismic profiles of oceanic plates reveal the diversity of Moho seismic reflection regions: clear, unclear, diffuse and non-Moho regions. Faults and/or fracturing in oceanic plates and subsequent seawater flow can modify oceanic plates locally, probably causing the diversity of oceanic Moho, as well as the rheological behavior of oceanic plates. Fluid flows along faults/fractures also extend the biosphere of oceanic plates. The first drilling sample should be a reference to the oceanic crust and the uppermost mantle, and define the nature of the Moho at the site, as well as constrain reasons for the diversity of the Moho in other areas. Deep sampling, such as mantle drilling in an old oceanic plate, can penetrate the biosphere/non-biosphere boundary, which tells us about the controlling factors of the limit of life. This information may help us find extraterrestrial life. After mantle drilling is completed, the borehole is the only window from the ocean floor to the mantle. An in-situ mantle observatory in the mantle hole to monitor plate movement and fluid flow with biological activity within an oceanic plate is also suggested. Detecting geoneutrinos at the mantle site allows the amounts and distributions of radioactive elements from the Earth's mantle to be measured. These provide basic information on the Earth's heat sources and the evolutionary history of the mantle.

DOI： 10.5026/jgeography.130.483

Web of Science

CiNii Research

Deformation characteristics and peak temperatures of the Sanbagawa Metamorphic and Shimanto Accretionary complexes on the central Kii Peninsula, SW Japan 査読有り

Shimura Yusuke, Tokiwa Tetsuya, Mori Hiroshi, Takeuchi Makoto, Kouketsu Yui

JOURNAL OF ASIAN EARTH SCIENCES 215 巻 2021年8月

Thermal structure in subducted units from continental Moho depths in a palaeo subduction zone, the Asemigawa region of the Sanbagawa metamorphic belt, SW Japan 査読有り

Kouketsu Yui, Sadamoto Kazushi, Umeda Hayato, Kawahara Hirokazu, Nagaya Takayoshi, Taguchi Tomoki, Mori Hiroshi, Wallis Simon, Enami Masaki

JOURNAL OF METAMORPHIC GEOLOGY 39 巻 ( 6 ) 頁： 727 - 749 2021年8月

岐阜県西部・揖斐川町春日地域の火成岩と接触変成岩招待有り査読有り

榎並正樹, 纐纈佑衣, 加藤丈典, 壷井基裕, 丹羽健文

地質学雑誌 127 巻 ( 6 ) 頁： 313 - 331 2021年6月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本地質学会

岐阜県西部には，チャート，泥岩や石灰岩などの堆積岩類や塩基性火山岩類などからなるジュラ紀の付加体が広く分布する．白亜紀に貫入した貝月山（かいづきやま）花崗岩体は，周囲の岩石に接触変成作用をあたえており，特に岩体の南部や東部では幅3-4kmにおよぶ広範囲にわたって再結晶が進行している．そして，方解石-ドロマイト地質温度計とラマン炭質物温度計によって温度構造が定量的に論じられており，典型的な接触変成帯を連続的に観察するのに適した地域である．さらに，接触変成帯中には再結晶石灰岩が広く分布しており，累進的な変成流体の組成変化が論じられている．また，接触部近傍は花崗岩固結時に放出された熱水によって交代作用を受けており，その程度に応じて発達するさまざまなスカルンや交代脈を観察できる．今回の巡検では，接触変成帯高温部を中心にスカルン，ホルンフェルスや交代作用を受けた塩基性岩とあわせて，貝月山花崗岩本体や接触変成帯中に貫入しているランプロファイア岩脈を見学する予定である．

DOI： 10.5575/geosoc.2021.0010

CiNii Research

Fe-rich olivine from an andesite dike in Miocene Shitara volcanic rocks, central Japan: a revised relationship between Mg/Fe ratio and Raman spectrum in olivine 査読有り

Enami Masaki, Nishii Aya, Mouri Takashi, Tsuboi Motohiro, Kouketsu Yui

JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES 116 巻 ( 3 ) 頁： 113 - 120 2021年6月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人　日本鉱物科学会

Olivine is a major mineral in ultramafic and mafic rocks. Due to the higher Mg/Fe partition coefficient of olivine than the coexisting phases, the occurrences of Mg–poorer olivine grains, especially with Mg#[= Mg/(Mg + Fe2+)] = 0.2–0.6, are rarely reported, and thus, their spectroscopic data are limited. Fe–rich olivine phenocrysts showing compositional zoning with Mg# = ~ 0.5 (core) and ~ 0.3 (rim) and microphenocrysts with Mg# = ~ 0.4 (core) and ~ 0.2 (rim) occur in basaltic trachyandesite of Miocene Shitara volcanic rocks in central Japan. These olivine grains were investigated by Raman spectroscopy. Combining our data with the published values, we have revised the equation for Mg#–Raman spectrum relationship proposed by Mouri and Enami (2008) as follows: Mg# = 0.005446ω 2 − 0.20259ω + 1.8442 (correlation coefficient r 2 = 0.984), where ω is the difference between the doublet peak positions (κ2 − κ1).

DOI： 10.2465/jmps.201204

Web of Science

Hidden intact coesite in deeply subducted rocks 査読有り

Taguchi Tomoki, Kouketsu Yui, Igami Yohei, Kobayashi Tomoyuki, Miyake Akira

EARTH AND PLANETARY SCIENCE LETTERS 558 巻 2021年3月

長野県小渋川流域における西南日本外帯の変成温度構造査読有り

森宏, 友岡洋介, 常磐哲也, 纐纈佑衣

地学雑誌 130 巻 ( 1 ) 頁： 85 - 98 2021年3月

中部地方渋川地域三波川帯におけるヒスイ輝石の再確認:ダナイト中の細脈構成鉱物としての産出査読有り

塩谷輝, 道林克禎, 纐纈佑衣, 榎並正樹

地質学雑誌 127 巻 ( 1 ) 頁： 59 - 65 2021年1月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本地質学会

The Shibukawa region of the Sanbagawa belt, central Japan, is one of the historic jadeite localities in Japan. Although its petrological and mineralogical characteristics of the locality were briefly reported over 35 years ago, no further studies have been conducted since the disappearance of the jadeite-bearing outcrop. Recently, jadeite was discovered within a veinlet in a host dunite boulder, a member of an ultrabasic body that is surrounded by the Sanbagawa crystalline schists in the Shibukawa region. The veinlet is composed mainly of diopside, OH-bearing grossular, jadeite, chlorite, pargasite and serpentine. Relict olivine and spinel, which were probably members of the host dunite, rarely occur in the veinlet. The jadeite grains vary from <1 to 50 µm in size, and occur as patchy aggregates with amoeba-shaped grossular grains. The jadeite grains have Na2O and Al2O3 contents of 14.7-15.4 wt.% and 24.3-25.5 wt.%, respectively, and are 91-98% jadeite contents [(Na-Fe3+)×100].

DOI： 10.5575/geosoc.2020.0050

CiNii Research

Alteration processes recorded by back-arc mantle peridotites from oceanic core complexes, Shikoku Basin, Philippine Sea 査読有り国際共著

Hirauchi Ken-ichi, Segawa Izumi, Kouketsu Yui, Harigane Yumiko, Ohara Yasuhiko, Snow Jonathan, Sen Atlanta, Fujii Masakazu, Okino Kyoko

ISLAND ARC 30 巻 ( 1 ) 2021年1月

赤石山地北部・西南日本外帯基盤岩の変成温度解析および熱モデリングによる甲斐駒ヶ岳花崗岩体の貫入熱影響評価

野部勇貴, 森宏, 水村裕紀, 山岡健, 纐纈佑衣, 常盤哲也

日本地質学会学術大会講演要旨 2021 巻 ( 0 ) 頁： 221 2021年

Semi-brittle deformation of antigorite serpentinite under forearc mantle wedge conditions 招待有り査読有り

Hirauchi Ken-ichi, Katayama Ikuo, Kouketsu Yui

JOURNAL OF STRUCTURAL GEOLOGY 140 巻頁： 104151 - 104151 2020年11月

Attenuated total reflection infrared (ATR-IR) spectroscopy of antigorite, chrysotile, and lizardite

Sakaguchi Ilona, Kouketsu Yui, Michibayashi Katsuyoshi, Wallis Simon R.

JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES 115 巻 ( 4 ) 頁： 303 - 312 2020年8月

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人　日本鉱物科学会

Attenuated total reflection infrared (ATR–IR) spectroscopy allows measurements to be made directly from the surface of one–sided, diamond polished thin sections of geological samples. This method greatly reduces the sample preparation time when compared to other IR spectroscopy methods and opens the possibility of using infrared spectroscopy to study thin–section scale microstructures. ATR–IR spectroscopy of antigorite, chrysotile, and lizardite in samples from the Mt. Shiraga serpentinite body, central Shikoku, SW Japan, reveals clear spectral differences in the 650–1250 cm−1 region associated with the vibration of the Si–O bonds in SiO4 tetrahedra and in the 3300–3750 cm−1 region associated with the vibration of the O–H bond in MgO2(OH)4 octahedra. A data–processing algorithm developed in this study allows the absorbance intensity and wavenumber of a particular absorbance peak to be used to create serpentine mineral phase maps based on the highest intensity Si–O absorbance bands for antigorite, chrysotile, and lizardite. Our methodology can be used to map serpentinite microstructures in thin sections illustrating the potential of ATR–IR as a relatively un–explored analytical tool in petrological studies. A combination of ATR–IR and electron microprobe data shows that for antigorite the wavenumber of the O–H absorbance band is correlated with the Fe content. Metamorphic reactions of serpentine minerals play a key role in the hydrodynamics of the earth's lithosphere, and the new information on serpentine mineral hydroxyl group behavior obtained by applying the technique outlined in this study are of great potential interest to researchers in a wide range of different fields.

DOI： 10.2465/jmps.190807

Web of Science

CiNii Research

ICP-MSを用いたカンラン石中の微量元素の定量分析

小坂由紀子, 加藤丈典, 道林克禎, 纐纈佑衣, 淺原良浩

日本地球化学会年会要旨集 67 巻 ( 0 ) 頁： 131 2020年

担当区分：責任著者記述言語：日本語掲載種別：研究論文（その他学術会議資料等）出版者・発行元：一般社団法人日本地球化学会

マントルの微量元素の化学的特徴を明らかにすることは、沈み込みや火成活動などにともなうマントル―地殻相互作用を理解する上で重要である。様々な同位体比データを元にマントル対流様式について様々なモデルが提案されているが、未だ統一的な見解に至っておらず、マントルの不均質性やその要因を理解する上で、新たな切り口が必要である。そこで、マントルの主要構成鉱物であるカンラン石の微量元素組成について着目した。LA-ICP-MSによる微量元素定量分析の報告はある(De Hoog et al., 2010)が、対象元素は限られている。特にカンラン石中の存在度の低いPb、Th、UはLA-ICP-MSでの定量が困難であり、その濃度範囲は不明である。本研究では、カンラン石中のPb、Th、Uを含む微量元素の定量分析を溶液法でICP-MSにより行った。

DOI： 10.14862/geochemproc.67.0_131

CiNii Research

ザクロ石中の相転移を伴わないコース石の発見とその意義：イタリア・西アルプスLago di Cignana Unitの例

田口知樹, 纐纈佑衣, 伊神洋平, 三宅亮

日本地質学会学術大会講演要旨 2019 巻 ( 0 ) 頁： 119 - 119 2019年9月

Discovery of unusual metamorphic temperatures in the Yuli belt, eastern Taiwan: New interpretation of data by Raman carbonaceous material geothermometry 査読有り国際共著

Kouketsu Yui, Tsai Chin-Ho, Enami Masaki

GEOLOGY 47 巻 ( 6 ) 頁： 522 - 526 2019年6月

Drastic effect of shearing on graphite microtexture: attention and application to Earth science 査読有り

Kouketsu Yui, Miyake Akira, Igami Yohei, Taguchi Tomoki, Kagi Hiroyuki, Enami Masaki

PROGRESS IN EARTH AND PLANETARY SCIENCE 6 巻 ( 1 ) 2019年3月

Metamorphic record of the Asemi‐gawa eclogite unit in the Sanbagawa belt, southwest Japan: Constraints from inclusions study in garnet porphyroblasts 査読有り

Tomoki Taguchi, Masaki Enami, Yui Kouketsu

Journal of Metamorphic Geology 37 巻頁： 181-201 2019年2月

静岡県西部三波川帯「渋川超苦鉄質岩体」の構造岩石学的特徴とその起源

塩谷輝, 道林克禎, 平内健一, 纐纈佑衣, 苗村康輔

日本地質学会学術大会講演要旨 2019 巻 ( 0 ) 頁： 98 - 98 2019年

四国中央部三波川帯汗見川地域に記録されたモホ不連続面近傍におけるスラブの温度構造及び変形構造

纐纈佑衣, 貞本和志, 梅田隼人, 河原弘和, 永冶方敬, 田口知樹, 森宏, ウォリスサイモン, 榎並正樹

日本地質学会学術大会講演要旨 2019 巻 ( 0 ) 頁： 116 - 116 2019年

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