| 1. |
YONEMOTO, S., Adachi, T., Funahashi, K., Nakano, N., Osanai, Y., The Strontium analysis on the human skeletal remains from the Emeelt Tolgoi Site and Bor Ovoo site in Bayanhongor, Mongolia, 2018.12. |
| 2. |
馬場, 壮太郎, 上里, 萌子, 外田, 智千, 足立, 達朗, 小山内, 康人, 中野, 伸彦, 豊島, 剛志, 東南極セール・ロンダーネ山地，ブッラットニーパネの崖錐に含まれる塩基性グラニュライトの変成組織, 琉球大学教育学部紀要＝Bulletin of Faculty of Education University of the Ryukyus, Vol.92, No.92, pp.161-177, 2018.02, Retrograde metamorphic P－T paths of garnet—pyroxene—bearing mafic gneisses from the Brattnipene nunataks in Sør Rondane Mountains, East Antarctica, were examined. The majority of samples preserve irregular—shaped garnet coexisting with clinopyroxene, quartz and plagioclase that developed around magnetite, ilmenite and orthopyroxene. The garnet contains fine—grained worm—like quartz inclusions. The occurrences are common in other mafic gneisses in northern Brattnipene and are interpreted as isobaric cooling textures. In another sample, garnet porphyroblasts have been replaced by symplectites of fine orthopyroxene and plagioclase. The mineral textures indicate near isothermal decompression. Retrograde P－T conditions estimated from rock containing orthopyroxene—plagioclase symplectite are within the range of 6.5 ~ 7.2 kbar, 700 ~ 780℃. Previous reports have revealed that metamorphism around Brattnipene is characterized by counterclockwise P－T path involving near—isobaric cooling. Our new finding suggests that metamorphic rocks formed by isothermal decompression should be present at higher altitude in the Brattnipene or relevant nunataks.. |
| 3. |
Yasuhito Osanai, Tatsuro Adachi, Kazuhiro Yonemura, Kazuo MIYAMOTO, Substance identification of the beads at the stone-slab grave from Daram Site, Khentii province, Mongolia., Excavations at Daram and Tevsh Sites A report on Joint Mongolian-Japanese Excavations in Outer Mongolia, 2016.12. |
| 4. |
SHIORI YONEMOTO, Tatsuro Adachi, Nobuhiko Nakano, Kyoko Funahashi, Tanaka Yoshiyuki, Yasuhito Osanai, The Strontium analysis on the human skeletal remains of the Bronze Age from the Tevsh sites in the southern Khangai, Mongol., Excavations at Daram and Tevsh Sites A report on Joint Mongolian-Japanese Excavations in Outer Mongolia, 2016.12. |
| 5. |
Rapid techniques for zircon separation and the application for U-Pb dating
本稿では、ジルコンの迅速分離手法とLA-ICP-MSを用いたU-Pb年代測定の実例を報告する。ジルコンは岩石中には副成分鉱物として産するため、その量的な問題から多くの場合、試料からの分離が必要となる。ジルコンの分離には、現在においても重液を用いた分離法が一般的である。しかしながら、重液の使用に対する非効率性や人体に及ぼす危険性、高コストが指摘されてきた。そこで、小論ではこれらの問題を解決するために、重液を用いないジルコンの迅速分離手法を考案した。本手法では、粉末試料をビーカーや時計皿による水簸および椀掛けをすることでジルコンを30分以内に抽出することが可能であり、重液分離と比べると極めて迅速で効率よく、低コストで安全な手法といえる。ジルコンはU-Pb年代測定のほかに、包有物解析や化学組成から様々な地質事変を制約できる鉱物である。本手法は膨大なジルコン分析に対応した地質学的研究に非常に有用な手法であるとともに考古学などの他分野への応用も期待される。This report provides the rapid separation techniques of zircons and an example of U-Pb dating of the zircons using LA-ICP-MS. Zircons have been commonly separated from a sample using heavy liquid. However, previous reports have pointed out the inefficiency, harmful effect and high cost of the heavy liquid method. In this report, we provide the rapid techniques for zircon separation without using heavy liquid, and procedures just before zircon analysis, including separation, hand picking, mounting, and observation under cathodoluminescence image. In the method introduced here, the zircons can be separated only for 30 minutes per one sample just by panning with a beaker and watch glass. Therefore, this method is more efficient, quicker, lower cost and safer compared with heavy liquid separation.. |
| 6. |
Geochronology of the metamorphic rocks from east-central Madagascar : constraints on crustal evolution process. |
| 7. |
中野 伸彦, 小山内 康人, 足立 達朗, SATISH-KUMAR M, 大和田 正明, JARGALAN S, BOLDBAATAR Ch, 吉本 紋, SYERYEKHAN K, モンゴル・アルタイ山脈の変成作用とテクトニクス, 日本鉱物科学会年会講演要旨集, Vol.2013, 2013.09. |
| 8. |
Multi-depth analysis of inclusions in metamorphic minerals
変成鉱物中の細粒包有物は, 多くの場合包有する変成鉱物の成長時に取り込まれることによって形成される. したがって, 細粒包有物の同定・解析は, 変成作用の過程を明らかにする上で有用である. しかし, これまで鏡下観察や電子プローブマイクロアナライザーによる表面分析では, 細粒包有物は充分に同定できない場合があった. 本稿では, この問題を克服するために, 九州大学大学院比較社会文化研究院地球変動講座に設置されているデジタルマイクロスコープと顕微ラマン分光分析装置を用い, 多数の微細包有物を解析する多深度解析手法を確立した. この手法では, 1μm間隔で撮影した鏡下写真とそれらの合成画像から, 包有物の三次元位置, 形状, 粒径, 色を迅速に明らかにすることができる. また, 形態による分類と包有された位置を元に, 顕微レーザーラマン分光分析装置を用いてすべての種類の包有物が同定可能である. 本手法は, 岩石学的研究はもとより, 透明物質中の内部包有物や不純物を扱う他分野にも応用できるものである.Fine-grained inclusions in metamorphic minerals are generally regarded to be trapped during the growth of the host metamorphic minerals. It suggests that identification and analyses of the each fine-grained inclusion are quite important in understanding each metamorphic evolution. However, identification and confirmation of the each inclusion phase are often difficult using conventional methods such as optical microscope observation and surface analysis by an electron microprobe analyzer. In this paper, we introduce a new analytical technique, named multi-depth analyses, to rapidly identify very fine-grained inclusions in metamorphic minerals using digital microscope and laser Raman microspectroscopy installed at Department of Environmental Changes, Faculty of Social and Cultural Studies, Kyushu University. Using this technique, three-dimensional position, shape, grain size and colors of fine-grained inclusions are distinguished easily by the multi-depth composite image in 1μm depth interval. The minerals or fluid inclusions are identified by the obtained Raman spectra even if the inclusions are quite fine-grained (≃1μm) or are situated in deeper position in thin section. This technique should be useful not only for petrological studies, but also for the other studies, e.g., archaeology, using inclusions or impurities in non-opaque matrix.. |
| 9. |
KAMEI A, HORIE K, OWADA M, YUHARA M, NAKANO N, OSANAI Y, ADACHI T, HARA Y, TERAO M, TEUCHI S, SHIMURA T, TSUKADA K, HOKADA T, IWATA C, SHIRAISHI K, ISHIZUKA H, TAKAHASHI Y, Late Proterozoic juvenile arc metatonalite and adakitic intrusions in the Sor Rondane Mountains, East Antarctica, 日本鉱物科学会年会講演要旨集, Vol.2012, 2012.09. |
| 10. |
SETIAWAN Nugroho I, OSANAI Y, NAKANO N, ADACHI T, YONEMURA K, YOSHIMOTO A, Metamorphic Evolution of High-Pressure Metamorphic Rocks from Bantimala and Barru Complex in South Sulawesi, Indonesia, 日本鉱物科学会年会講演要旨集, Vol.2012, 2012.09. |
| 11. |
OWADA M, OSANAI Y, NAKANO N, ADACHI T, YONEMURA K, YOSHIMOTO A, JARGALAN S, BOLDBAATAR C, SAITSH-KUMAR M, Paleozoic igneous activities in south-central Mongolia, 日本鉱物科学会年会講演要旨集, Vol.2012, 2012.09. |
| 12. |
Continental collision boundary between Shanthai/Sibumasu blocks. |
| 13. |
Evolution of high-Al gneisses from the Mongolian Altay Mountains. |
| 14. |
Zircon U-Pb geochoronology and petrochemistry of Early Cretaceous adakitic granites in the Kitakmai Mountains, Japan. |
| 15. |
U-Pb zircon ages of metamorphic rocks associated with blueschists from Kurosegawa Tectonic Belt. |
| 16. |
Rapid techniques for quantitative determination of major, trace and rare earth elements in low dilution glass bead using XRF and LA-ICP-MS
This report provides analytical techniques for major, trace and rare earth elements by X-ray fluorescence spectrometry (XRF) and laser ablation-inductively coupled plasma-mass spectrometry (LAICP-MS) at Department of Environmental Changes, Faculty of Social and Cultural Studies, Kyushu University. Totally 42 elements can be measured from low dilution glass bead (sample:flux ratio of 1:2). 23 elements (SiO_2, TiO_2, Al_2O_3, total Fe_2O_3, MnO, MgO, CaO, Na_2O, K_2O, P_2O_5, V, Cr, Co, Ni, Cu, Zn, Ga, Rb, Sr, Y, Zr, Nb and Ba) of each sample were measured in 80 minutes by XRF. The other 19 elements (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, Pb, Th and U) were later measured in 5 minutes by LA-ICP-MS. Synthetic samples prepared from pure chemical reagents as well as standard samples provided by Geological Society of Japan (GSJ) (20 samples) were used to define individual calibration lines for XRF analysis, and SRM612 glass standard issued by the National Institute of Standard and Technology (NIST) was used as the calibration standard for LA-ICP-MS analysis. Analytical results of the GSJ standard samples appear an agreement with their recommended values mostly within 15% differences. The system can provide abundances of the most elements in rocks, and requires only 1.8g of sample powder, hence it should be very useful not only for geological but also for archeological samples.. |
| 17. |
OSANAI Y, NAKANO N, ADACHI T, OWADA M, SATISH-KUMAR M, JARGALAN S, BOLDBAATAR Ch, YONEMURA K, YOSHIMOTO A, Garnet, Clinopyroxene megacrysts and Garnet-bearing mantle xenoliths from the Tariat Depression, Mongolia, 日本鉱物科学会年会講演要旨集, 10.14824/jakoka.2011.0.100.0, Vol.2011, 2011.09. |
| 18. |
NAKANO N, OSANAI Y, ADACHI T, SATISH-KUMAR M, OWADA M, JARGALAN S, BOLDBAATAR Ch, YONEMURA K, YOSHIMOTO A, High-Al-Mg gneisses and related rocks from the Mongolian Altay Mountains, 日本鉱物科学会年会講演要旨集, 10.14824/jakoka.2011.0.99.0, Vol.2011, 2011.09. |
| 19. |
SATISH-KUMAR M, OSANAI Y, NAKANO N, KAMEI A, JARGALAN S, BOLDBAATAR C, OWADA M, ADACHI T, YONEMURA K, YOSHIMOTO A, Stable isotope study of metacarbonate rocks from western Mongolia : Implications for fluid-rock interaction processes in the Central Asian Orogenic Belt, 日本鉱物科学会年会講演要旨集, 10.14824/jakoka.2011.0.101.0, Vol.2011, 2011.09. |
| 20. |
小山内 康人, 中野 伸彦, 足立 達朗, 大和田 正明, Satish-Kumar M, Jargalan Sereenen, Boldbaatar Chidm, 米村 和紘, 吉本 紋, モンゴル・タリアットに産するザクロ石，単斜輝石巨晶と含ザクロ石マントルゼノリス, 日本鉱物科学会年会講演要旨集, 10.14824/jakoka.2011.0.100.0, Vol.2011, 2011.09, モンゴル・タリアットに産するザクロ石，単斜輝石巨晶と含ザクロ石マントルゼノリスについて，発表する. |
| 21. |
Understanding metamorphic and igneous histories of the Inthanon Belt, western Thailand. |
| 22. |
Inclusions of sector zoned garnet in pelitic gneiss from the Nujiang river area, SW China. |
| 23. |
EPMA dating of monazite in pelitic granulite from Mt. Ukidake, Kyushu. |
| 24. |
小山内 康人, 野木 義史, 豊島 剛志, 外田 智千, 馬場 壮太郎, 中野 伸彦, 足立 達朗, 大和田 正明, 東南極ドロンイングモードランドの東・西ゴンドワナ大陸接合境界, 日本鉱物科学会年会講演要旨集, 10.14824/jakoka.2010.0.181.0, Vol.2010, 2010.09. |
| 25. |
Zircon chemistry in UHT metamorphic rocks : examples from Napier Complex, East Antarctica. |
| 26. |
Consideration of tectonics setting to bulk chemical compositions of blueschist from the Kurosegawa tectonic zone in Japan. |
| 27. |
Graphite with growth spirals in Mg-Al-rich granulite from the area to the south of Syowa Station, Antarctica. |
| 28. |
Compositional variation of monazite in leucocratic vein from Sor Rondane Mountains, East Antarctica. |
| 29. |
小山内 康人, 豊島 剛志, 外田 智千, 馬場 壮太郎, 中野 伸彦, 足立 達朗, 大和田 正明, 白石 和行, 本吉 洋一, 東南極ドロンイングモードランド・セールロンダーネ山地のパンアフリカン衝突型変成作用, 日本鉱物科学会年会講演要旨集, 10.14824/jakoka.2009.0.43.0, Vol.2009, 2010.04. |
| 30. |
Orthopyroxene- and/or spinel-bearing symplectites in mafic granulite from the Sor Rondane Mountains, East Antarctica. |
| 31. |
O-203 Metamorphic evolution of Ultramafic Complex from the Sor Rondane Mountains, Dronning Maud Land, East Antarctica. |
| 32. |
O-204 Macroscopic geological structures and deformation in the central part of the Sor Rondane Mountains, eastern Dronning Maud Land, East Antarctica. |
| 33. |
O-205 Unraveling poly-metamorphic records in the high-grade metamorphic rocks from central Sor Rondane Mountains, East Antarctica. |
| 34. |
O-206 Origin of carbonates from the southern Austkampane in the Sor Rondane Mountains, East Antarctica. |
| 35. |
O-207 Metamorphism of the Brattnipene region, Sor Rondane Mountains, East Antarctica. |
| 36. |
O-208 Relationship between orthopyroxene felsic gneiss and hornblende-biotite felsic gneiss in the Brattnipene area, Sor Rondane Mountains, East Antarctica. |
| 37. |
P-15 Metamorphic history of the Yoshimi Metamorphic Rocks. |
| 38. |
Metamorphic evolution of Sor Rondane Mountains, Doronning Maud Land, East Antarctica : reconsideration. |
