モホ形成の岩石学

2011 年度 研究成果報告書

• 研究課題/領域番号: 20244085
• 研究種目: 基盤研究(A)
• 配分区分: 補助金
• 応募区分: 一般
• 研究分野: 岩石・鉱物・鉱床学
• 研究機関: 金沢大学
• 研究代表者: 荒井 章司 金沢大学, 自然システム学系, 教授 (20107684)
• 研究期間 (年度): 2008 – 2011
• キーワード: モホ / マントル / 地殻 / 海洋底 / オフィオライト / 島弧 / 捕獲岩

研究概要

地球内部のグローバルな物質的境界のうち,最浅部のモホ(モホロビチッチ不連続面の岩石学的実体とその形成過程を研究した。これらの成果は将来の海洋域でのマントル掘削(モホール)実施時の基本的指針となる。ある種の海洋リソスフェア(白亜紀)の断片であるオマーン・オフィオライトでは, 10m～1kmのモホ遷移帯(MTZ)が存在する。MTZはダナイト,ウェールライトを主とするが,厚いものほどMgに富み,基本的にマントル・ハルツバーガイトとMORBの反応帯の性格を有する。島弧では,集積岩の付加および加水作用等の二次的改変が激しく, MTZの多様性と不均質性が著しい。

研究成果

• [雑誌論文] Behavior of MORB magmas at uppermost mantle beneath a fast-spreading axis : an example from Wadi Fizh of the northern Oman ophiolite (2012)
  • 著者名/発表者名: Akizawa, N., Arai, S. and Tamura, A.
  • 雑誌名: Contributions to Mineralogy and Petrology 巻: (accepted)
• [雑誌論文] Spinel-free and spinel-poor dunite veins crosscutting the Wadi Rajmi ophiolite chromitite(northern Oman ophiolite) (2012)
  • 著者名/発表者名: Abbou-Kebir, K., Arai, S., Ahmed, A. H. and Ceuleneer, G.
  • 雑誌名: Bulletin de la Societe Geologique de France 巻: (accepted)
• [雑誌論文] Gabbroic xenoliths and megacrysts in Pleisto-Holocene alkali basalts from Jeju Island (2012)
  • 著者名/発表者名: Yang, K., Arai, S., Yu, J-E., Yun, S-H. and Hwang, J-Y.
  • 雑誌名: Lithos 巻: 142/143 ページ: 201-215
• [雑誌論文] Characterization of the thermally metamorphosed mantle-crust transition zone of the Neoproterozoic ophiolite at Gebel Mudarjaj (2012)
  • 著者名/発表者名: Ahmed, A. H., Gharib, M. E. and Arai, S.
  • 雑誌名: Lithos 巻: 142/143 ページ: 67-83
• [雑誌論文] Origin of wehrlite cumulates in the Moho Transitio Zone of the Neoproterozoic Ras Salatit Ophiolite (2012)
  • 著者名/発表者名: Gahlan, H. A., Arai, S., Abu El-Ela, F. F. and Tamura, A.
  • 雑誌名: Contributions to Mineralogy and Petrology 巻: 163 ページ: 225-241
• [雑誌論文] Petrology and geochemistry of prograde deserpentinized peridotites from Happo-O' ne (2012)
  • 著者名/発表者名: Khedr, M. Z. and Arai, S.
  • 雑誌名: Journal of Asian Earth Sciences 巻: 43 ページ: 150-163
• [雑誌論文] Origin of spinel-free dunite veins from northern Oman ophiolite : Possible involvement of a komatiitic melt (2011)
  • 著者名/発表者名: Abbou-Kebir, K., Arai, S., Ahmed, A. H. and Ceuleneer, G.
  • 雑誌名: Journal of Mineralogical and Petrological Sciences 巻: 106 ページ: 235-245
• [雑誌論文] Abyssal harzburgite veined by silica-oversaturated melt in the Sibuyan Ultramafics (2011)
  • 著者名/発表者名: Payot, B. D., Arai, S. and Tamayo, R. A., Jr.
  • 雑誌名: Journal of Mineralogical and Petrological Sciences 巻: 106 ページ: 175-180
• [雑誌論文] Two Mesozoic oceanic phases recorded in the basic and metabasic rocks of the Nain and Ashin-Zavar ophiolitic melanges (2011)
  • 著者名/発表者名: Shirdashtzadeh, N., Torabi, G. and Arai, S.
  • 雑誌名: Ofioliti 巻: 36 ページ: 191-205
• [雑誌論文] Insight into the uppermost mantle section of a maturing arc : The Eastern Mirdita ophiolite (2011)
  • 著者名/発表者名: Morishita, T., Dilek, Y., Shallo, M., Tamura, A. and Arai, S.
  • 雑誌名: Lithos 巻: 124 ページ: 215-226
• [雑誌論文] Raman spectroscopy of hydrous inclusions in olivine and orthopyroxene in ophiolitic harzburgite : implications for elementary processes in serpentinization (2011)
  • 著者名/発表者名: Miura, M., Arai, S. and Mizukami, T.
  • 雑誌名: Journal of Mineralogical and Petrological Sciences 巻: 106 ページ: 91-96
• [雑誌論文] Peculiar Ca-Mg-Si metasomatism along a shear zone within the mantle wedge : inference from fine-grained xenoliths from Avacha volcano (2011)
  • 著者名/発表者名: Ishimaru, S. and Arai, S.
  • 雑誌名: Contributions to Mineralogy and Petrology 巻: 161 ページ: 703-720
• [雑誌論文] Diopsidites and rodingites : serpentinization and Ca-metasomatism in the Oman ophiolite mantle (2011)
  • 著者名/発表者名: Python, M., Yoshikawa, M., Shibata, T. and Arai, S.
  • 雑誌名: Springer-Verlag, Berlin ページ: 401-435
• [雑誌論文] Chemical characteristics of chromian spinel in plutonic rocks : implications for deep magma processes and discrimination of tectonic setting (2011)
  • 著者名/発表者名: Arai, S., Okamura, H., Kadoshima, K., Tanaka, C., Suzuki, K. and Ishimaru, S.
  • 雑誌名: Island Arc 巻: 20 ページ: 125-137
• [雑誌論文] Possible recycled origin for ultrahigh-pressure chromitites in ophiolites (2010)
  • 著者名/発表者名: Arai, S.
  • 雑誌名: Journal of Mineralogical and Petrological Sciences 巻: 105 ページ: 280-285
• [雑誌論文] Base Metal(BM) and Platinum-Group Element(PGE) Mineralogy and geochemistry of Elmaslar Chromite Deposit (2010)
  • 著者名/発表者名: Akbulut, M., Piskin, O., Arai, S., Ozgenc, I and Minareci, F.
  • 雑誌名: Ofioliti 巻: 35 ページ: 1-20
• [雑誌論文] クロミタイト-不思議なマントル構成岩- (2010)
  • 著者名/発表者名: 荒井章司
  • 雑誌名: 地学雑誌(Journal of Geography) 巻: 119 ページ: 392-410
• [雑誌論文] Post-deformational impregnation of depleted MORB in Nain lherzolite(Central Iran) (2010)
  • 著者名/発表者名: Pirnia, T., Arai, S. and Torabi, G.
  • 雑誌名: Journal of Mineralogical and Petrological Sciences 巻: 105 ページ: 74-79
• [雑誌論文] Clinopyroxenes in high-P metaperidotites from Happo-O'ne (2010)
  • 著者名/発表者名: Khedr, M. Z., Arai, S., Tamura, A. and Morishita, T.
  • 雑誌名: Lithos 巻: 119 ページ: 439-456
• [雑誌論文] Hydrous peridotites with Ti-rich chromian spinel as a low-temperature forearc mantle facies (2010)
  • 著者名/発表者名: Khedr, M. Z. and Arai, S.
  • 雑誌名: Contributions to Mineralogy and Petrology 巻: 159 ページ: 137-157
• [雑誌論文] Igneous, alteration and exhumation processes recorded in abyssal peridotites and related fault rocks from an oceanic core complex along the Central Indian Ridge (2009)
  • 著者名/発表者名: Morishita, T., Hara, K., Nakamura, K., Sawaguchi, T., Tamura, A., Arai, S., Okino, K., Takai, K. and Kuragai, H.
  • 雑誌名: Journal of Petrology 巻: 50 ページ: 1299-1325
• [雑誌論文] Petrologic profile of peridotite layers under a possible Moho in the northern Oman ophiolite : an example from Wadi Fizh (2009)
  • 著者名/発表者名: Akizawa, N. and Arai, S.
  • 雑誌名: Journal of Mineralogical and Petrological Sciences 巻: 104 ページ: 389-394
• [雑誌論文] Unusual ultra-depleted dunite from Sibuyan Island(the Philippines): a residue for ultra-depleted MORB? (2009)
  • 著者名/発表者名: Payot, B. D., Arai, S., Tamura, A., Ishimaru, S. and Tamayo, R. A., Jr.
  • 雑誌名: Journal of Mineralogical and Petrological Sciences 巻: 104 ページ: 383-388
• [雑誌論文] Geochemistry of metasomatized peridotites above subducting slab : a case study of hydrous metaperidotites from Happo-One (2009)
  • 著者名/発表者名: Khedr, M. Z. and Arai, S.
  • 雑誌名: Journal of Mineralogical and Petrological Sciences 巻: 104 ページ: 313-318
• [雑誌論文] Metal-saturated peridotite in the mantle wedge inferred from metal-bearing peridotite xenoliths from Avacha volcano (2009)
  • 著者名/発表者名: Ishimaru, S., Arai, S. and Shukuno, H.
  • 雑誌名: Earth and Planetary Science Letters 巻: 284 ページ: 352-360
• [雑誌論文] Geochemical characteristics of chloritization of mafic crust from the northern Omanophiolite : Implications for estimating the chemical budget of hydrothermal alteration of the oceanic lithosphere (2009)
  • 著者名/発表者名: Yoshitake, N., Arai, S., Ishida, Y. and Tamura, A.
  • 雑誌名: Journal of Mineralogical and Petrological Science 巻: 104 ページ: 156-163
• [雑誌論文] Rock seismic anisotropy of the low-velocity zone beneath the volcanic front in the mantle wedge (2009)
  • 著者名/発表者名: Michibayashi, K., Oohara, T., Satsukawa, T., Ishimaru, S., Arai, S. and Okrugin, V. M.
  • 雑誌名: Geophysical Research Letters 巻: 36 ページ: L12305
  • DOI: doi:10.1029/2009GL038527
• [雑誌論文] Mineralogy and Mineral Paragenesis of the Co-Ni Arsenide Ores of the Bou Azzer (2009)
  • 著者名/発表者名: Ahmed, A. H., Arai, S. and Ikenne, M.
  • 雑誌名: Economic Geology 巻: 104 ページ: 249-266
• [雑誌論文] Subarc magmatic and hydration processes inferred from a hornblende peridotite xenolith in spessartite from Kyoto (2009)
  • 著者名/発表者名: Ishimaru, S., Arai, S., Tamura, A., Takeuchi, M. and Kiji, M.
  • 雑誌名: Journal of Mineralogical and Petrological Sciences 巻: 114 ページ: 97-104
• [雑誌論文] What underlies the Philippine Island Arc?: Clues from the Calaton Hill (2009)
  • 著者名/発表者名: Payot, B. D., Arai, , S., Tamayo, R. A., Jr. and Yumul, G. P., Jr.
  • 雑誌名: Jour. Asian Earth Sci 巻: 36 ページ: 371-389
• [雑誌論文] Constraints on the evolutionary history of aluminous mafic rocks in the Ronda peridotite massif(Spain) from trace-element compositions of clinopyroxene and garnet (2009)
  • 著者名/発表者名: Morishita, T., Arai, S., Ishida, Y., Tamura, A. and Gervilla, F.
  • 雑誌名: Geochemical Journal 巻: 43 ページ: 191-206
• [雑誌論文] Intergranular trace elements in mantle xenoliths from Russian Far East : An example for mantle metasomatism by hydrous melt (2009)
  • 著者名/発表者名: Yamamoto, J., Nakai, S., Nishimura, K., Kaneoke, I., Kagi, H., Sato, K., Okumura, T., Prikhod' ko and Arai, S.
  • 雑誌名: Island Arc 巻: 18 ページ: 225-241
• [雑誌論文] Carbonate-orthopyroxenite lenses from the Late Proterozoic Gerf ophiolite (2009)
  • 著者名/発表者名: Gahlan, H. M. and Arai, S.
  • 雑誌名: Jour. African Earth Sci 巻: 53 ページ: 70-82
• [雑誌論文] Highly silicic glasses in peridotite xenoliths from Avacha volcano, Kamchatca arc ; implications for melting and metasomatism within the sub-arcmantle (2009)
  • 著者名/発表者名: Ishimaru, S. and Arai, S.
  • 雑誌名: Lithos 巻: 107 ページ: 93-106
• [雑誌論文] Chromitite and peridotite from Rayat, northeastern Iraq, as fragments of a Tethyan ophiolite (2009)
  • 著者名/発表者名: Ismail, S. A., Arai, S., Ahmed, A. H. and Shimizu, Y.
  • 雑誌名: Island Arc 巻: 18 ページ: 175-183
• [雑誌論文] Chromian spinels in mafic-ultramafic mantle dykes : evidence for two-stage melt production during the evolution of the Oman ophiolite (2008)
  • 著者名/発表者名: Python, M., Ceuleneer, G. and Arai, S.
  • 雑誌名: Lithos 巻: 106 ページ: 137-154
• [雑誌論文] Petrology of the Yugu peridotites in the Gyeonggi massif, South Korea : implications for their origin and hydration process (2008)
  • 著者名/発表者名: Arai, S., Tamura, A., Ishimaru, S., Kadoshima, K., Lee, Y.-I. and Hisada, K.
  • 雑誌名: Island Arc 巻: 17 ページ: 485-501
• [雑誌論文] Chromian spinels in mafic-ultramafic mantle dykes : evidencefor two-stage melt production during the evolution of the Oman ophiolite (2008)
  • 著者名/発表者名: Python, M., Ceuleneer, G. and Arai, S.
  • 雑誌名: Lithos 巻: 106 ページ: 137-154
• [雑誌論文] Magmatic unmixing in spinel from Late Precambrian concentrically-zoned mafic-ultramafic intrusions (2008)
  • 著者名/発表者名: Ahmed, H. A., Helmy, H. M., Arai, S. and Yoshikawa, M.
  • 雑誌名: Lithos 巻: 104 ページ: 85-98
• [雑誌論文] Arsenide in a metasomatized peridotite xenolith as a constraint on arsenic behavior in the mantle wedge (2008)
  • 著者名/発表者名: Ishimaru, S. and Arai, S.
  • 雑誌名: Am. Mineral 巻: 93 ページ: 1061-1065
• [雑誌論文] Origin and significance of spinel-pyroxene symplectite in lherzolite xenoliths from Tallante (2008)
  • 著者名/発表者名: Shimizu, Y., Arai, S., Morishita, T. and Ishida, Y.
  • 雑誌名: Mineralogy and Petrology 巻: 94 ページ: 27-43
• [雑誌論文] Fertile abyssal peridotites within the Franciscan subduction complex, central California : possible origin as detached remnants of oceanic fracture zones located close to a slow-spreading ridge (2008)
  • 著者名/発表者名: Hirauchi, K., Tamura, A., Arai, S., Yamaguchi, H. and Hisada, K.
  • 雑誌名: Lithos 巻: 105 ページ: 319-328
• [雑誌論文] 海洋リソスフェアーの熱水変質に伴う元素移動 (2008)
  • 著者名/発表者名: 森下知晃・中村謙太郎・澤口隆・原香織・荒井章司・熊谷英憲
  • 雑誌名: 地学雑誌 巻: 117 ページ: 220-252
• [雑誌論文] モホの岩石学実体を探る-21世紀モホールを目指して- (2008)
  • 著者名/発表者名: 荒井章司・阿部なつ江
  • 雑誌名: 地学雑誌 巻: 117 ページ: 110-123
• [雑誌論文] Nickel enrichment in mantle olivine beneath a volcanic front (2008)
  • 著者名/発表者名: Ishimaru, S. and Arai, S.
  • 雑誌名: Contributions to Mineralogy and Petrology 巻: 156 ページ: 119-131
• [雑誌論文] Insights into petrological characteristics of the lithosphere of mantle wedge beneath arcs through peridotite xenoliths (2008)
  • 著者名/発表者名: Arai, S. and Ishimaru, S.
  • 雑誌名: Journal of Petrology 巻: 49 ページ: 665-695
• [雑誌論文] Petrology and geochemistry of peridotites from IODP Site U1309 at Atlantis Massif (2008)
  • 著者名/発表者名: Tamura, A., Arai, S., Ishimaru, S. and Andal, E. S.
  • 雑誌名: Contributions to Mineralogy and Petrology 巻: 155 ページ: 491-509
  • DOI: doi:10.1007/s00410-007-0254-0
• [学会発表] What do podiform chromitites tell us? (2011)
  • 著者名/発表者名: Arai, S.
  • 学会等名: GeoCon 2011
  • 発表場所: Crowne Plaza Hotel, Quezon City(Philippines)
  • 年月日: 2011-12-08
• [学会発表] Ophiolitic chromitites : Origins and implications for mantle dynamics (2011)
  • 著者名/発表者名: Arai, S.
  • 学会等名: Geological Society of America Annual Meeting 2011
  • 発表場所: Minneapolis Convention Center(USA)
  • 年月日: 2011-10-11
• [学会発表] Podiform chromitites as a possible mantle dynamics tracer(Keynote) (2011)
  • 著者名/発表者名: Arai, S. and Ahmed, A. H.
  • 学会等名: 11^<th> Biennial Meeting SGA 2011
  • 発表場所: Enjoy Resort and Casino, Antofagasta(Chile)
  • 年月日: 2011-09-29
• [学会発表] モホの岩石学的イメージング:海洋底そして日本列島 (2011)
  • 著者名/発表者名: 荒井章司
  • 学会等名: 日本地質学会第118学術大会・日本鉱物科学会2011年年会合同学術大会
  • 発表場所: 茨城大学(水戸市)
  • 年月日: 2011-09-09
• [学会発表] Ultrahigh-pressure podiform chromitites as a possible deep recycled material (2011)
  • 著者名/発表者名: Arai, S., Ahmed, A. H. and Miura, M.
  • 学会等名: Goldschmidt 2011
  • 発表場所: Prague Congress Center, Prague(Czech)
  • 年月日: 2011-08-19
• [学会発表] Possible high-PGE-Au silicate melt/aqueous fluid in mantle wedge : inferred from Ni metasomatism in Avacha peridotite xenolith (2011)
  • 著者名/発表者名: Ishimaru, S., Arai, S., Borisova, A. Y. and Tamura, A.
  • 学会等名: Goldschmidt 2011
  • 発表場所: Prague Congress Center, Prague(Czech)
  • 年月日: 2011-08-18
• [学会発表] Growth-zoned chromian spinel in rodingite : evidence for Cr mobility in hydrothermal solution (2011)
  • 著者名/発表者名: Akizawa, N., Arai, S., Tamura, A. and Uesugi, J.
  • 学会等名: Goldschmidt 2011
  • 発表場所: Prague Congress Center, Prague(Czech)
  • 年月日: 2011-08-17
• [学会発表] Origins of ophiolitic chromitites : Magmatic accumulate and deep recycling (2011)
  • 著者名/発表者名: Arai, S. and Ahmed, A. H.
  • 学会等名: Asia Oceania Geosciences Society 2011 General Assembly
  • 発表場所: Taipei International Convention Center(Taiwan)
  • 年月日: 2011-08-11
• [学会発表] Sulfide-rich dunite from Wadi Thuqbah, the northern Oman ophiolite (2011)
  • 著者名/発表者名: Negishi, H., Arai, S., Ishimaru, S. and Tamura, A.
  • 学会等名: Asia Oceania Geosciences Society 2011 General Assembly
  • 発表場所: Taipei International Convention Center(Taiwan)
  • 年月日: 2011-08-11
• [学会発表] Concordant and discordant podiform chromitites : their origins revisited (2011)
  • 著者名/発表者名: Arai, S. and Ahmed, A. H.
  • 学会等名: 地球惑星科学連合大会
  • 発表場所: 幕張メッセ(千葉県)
  • 年月日: 2011-05-27
• [学会発表] Sulfide-rich dunite from Wadi Thuqbah, the northern Oman Ophiolite (2011)
  • 著者名/発表者名: Negishi, H., Arai, S., Ishimaru, S. and Tamura, A.
  • 学会等名: 地球惑星科学連合大会
  • 発表場所: 幕張メッセ(千葉県)
  • 年月日: 2011-05-27
• [学会発表] Chromitite as a possible tracer of mantle dynamics (2011)
  • 著者名/発表者名: Arai, S.
  • 学会等名: 地球惑星科学連合大会
  • 発表場所: 幕張メッセ(千葉県)
  • 年月日: 2011-05-23
• [学会発表] Deep carbon cycle unraveled by deep ocean drilling (2011)
  • 著者名/発表者名: Arai, S.
  • 学会等名: 地球惑星科学連合大会
  • 発表場所: 幕張メッセ(千葉県)
  • 年月日: 2011-05-23
• [学会発表] Similarity and difference between abyssal and back-arc basin peridotites : inference from xenoliths suites from the Sea of Japan (2010)
  • 著者名/発表者名: Arai, S. and Tanaka, C.
  • 学会等名: 20^<th> International Mineralogical Association
  • 発表場所: Etovos University(Hungary)
  • 年月日: 2010-08-23
• [学会発表] Group II ultramafic xenoliths from Jeju Island, South Korea : evidence for melt migration and secondary orthopyroxene formation (2010)
  • 著者名/発表者名: Yang, K., Szabo, Cs. and Arai, S.
  • 学会等名: 20^<th> International Mineralogical Association
  • 発表場所: Etovos University(Hungary)
  • 年月日: 2010-08-22
• [学会発表] 北部オマーン・オフィオライトにおけるモホの岩石学的実体 (2010)
  • 著者名/発表者名: 荒井章司
  • 学会等名: 地球惑星科学連合大会
  • 発表場所: 幕張メッセ(千葉県)
  • 年月日: 2010-05-26
• [学会発表] Origin of Moho in the Northern Oman Ophiolite (2009)
  • 著者名/発表者名: Arai, S.
  • 学会等名: Asia Oceania Geosciences Society 2009 General Assembly
  • 発表場所: SUNTEC(Singapore)
  • 年月日: 2009-08-12
• [学会発表] Petrologic profile through the uppermost mantle under the Moho from the northern Oman ophiolite : an example from Wadi Fizh (2009)
  • 著者名/発表者名: Akizawa, N., Arai, S. and Tamura, A.
  • 学会等名: A011, Asia Oceania Geosciences Society 2009 General Assembly
  • 発表場所: SUNTEC(Singapore)
  • 年月日: 2009-08-12
• [学会発表] Diversity and origin of Moho in the northern Oman ophiolite (2009)
  • 著者名/発表者名: Arai, S.
  • 学会等名: European Geosciences Union General Assembly 2009
  • 発表場所: Vienna Convention Centre(Austria)
  • 年月日: 2009-04-22
• [学会発表] Origin of Moho from the Oman ophiolite : Foreseeing of the Mohole result? (2008)
  • 著者名/発表者名: Arai, S.
  • 学会等名: International Symposia on Geoscience Resources and Environments of Asian Terranes(GREAT 2008)(4^<th> Conference of IGCP516)
  • 発表場所: Chaophya Hotel, Bangkok(Thailand)
  • 年月日: 2008-11-25
• [学会発表] かんらん岩とレアメタル濃集:マグマと熱水の役割 (2008)
  • 著者名/発表者名: 荒井章司
  • 学会等名: 日本鉱物科学会2008年会
  • 発表場所: 秋田大学(秋田県)
  • 年月日: 2008-09-11
• [学会発表] The Avacha peridotite xenolith suite from Kamchatka arc as a window to sub-volcanic front mantle processes (2008)
  • 著者名/発表者名: Arai, S. and Ishimaru, S.
  • 学会等名: EID05429P
  • 発表場所: Convention Centre, Oslo(Norway)
  • 年月日: 2008-08-09
• [学会発表] Dunites and wehrlites from the northern Oman Ophiolite : One suite or more? (2008)
  • 著者名/発表者名: Arai, S.
  • 学会等名: Asia Oceania Geosciences Society 2008 General Assembly
  • 発表場所: BEXCO, Busan(Korea)
  • 年月日: 2008-06-18
• [学会発表] Decoupled modal and mineral chemical variations of uppermost mantle peridotites beneath a spreading center : an example from Wadi Rajmi of the northern Oman ophiolite (2008)
  • 著者名/発表者名: Arai, S., Suzuki, K. and Okamura, H.
  • 学会等名: European Geosciences Union General Assembly 2008
  • 発表場所: Vienna Convention Centre(Austria)
  • 年月日: 2008-04-14