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Journal Articles

Provenance analysis using rapid quantification of heavy minerals via EPMA; A Case study in the Horonobe region, Hokkaido, northern Japan

Yonaga, Yusuke; Sano, Naomi*; Amamiya, Hiroki*; Ogita, Yasuhiro; Niwa, Masakazu; Yasue, Kenichi*

Oyo Chishitsu, 62(1), p.2 - 12, 2021/04

Provenance analysis based on quick identification of heavy minerals using an electron probe microanalyzer (EPMA) was applied to samples from Pleistocene sediments in Horonobe region, Hokkaido, where major provenance rocks can be sedimentary and mafic igneous rocks. The concentrations of 16 elements were measured in individual grains to identify the mineral species based on their chemical composition. In addition, microscopic observation of thin sections and gravel composition analysis were conducted to confirm the validity of the quick identification of heavy minerals. These analyses clarify that combinations of several heavy mineral species can be a useful index of provenance rocks from the Soya Hill and Teshio Mountains, and suggest that uplift of the Soya Hill after ca. 1.5 Ma constrained supply of sediments from the Teshio Mountains. On the other hand, minerals uncommon both in the Soya Hill and Teshio Mountains, such as hornblende, are included in the Pleistocene sediments. This suggests that a sediment supply from distant area was also significant, like transportation by the Teshio River. The method for quick identification of heavy minerals using EPMA can provide an information about provenance rocks difficult to identify only by gravel composition analysis.

Journal Articles

Quantitative micro-X-ray fluorescence scanning spectroscopy of wet sediment based on the X-ray absorption and emission theories; Its application to freshwater lake sedimentary sequences

Katsuta, Nagayoshi*; Takano, Masao*; Sano, Naomi; Tani, Yukinori*; Ochiai, Shinya*; Naito, Sayuri*; Murakami, Takuma*; Niwa, Masakazu; Kawakami, Shinichi*

Sedimentology, 66(6), p.2490 - 2510, 2019/10

 Times Cited Count:2 Percentile:39.34(Geology)

Micro-X-ray fluorescence (XRF) scanning spectroscopy of marine and lake sedimentary sequences can provide detailed paleoenvironmental records available through element intensities proxy data. However, problems for effects of interstitial pore water on the micro-XRF intensities have been pointed out so far because of direct measurement on the split wet sediment surfaces. In this study, new methods for the XRF corrections were developed by being considered with the micro-X-ray scanning spectroscopy.

Journal Articles

Provenance identification based on EPMA analyses of heavy minerals; Case study of the Toki Sand and Gravel Formation, central Japan

Shimizu, Mayuko; Sano, Naomi; Ueki, Tadamasa; Komatsu, Tetsuya; Yasue, Kenichi*; Niwa, Masakazu

Island Arc, 28(2), p.e12295_1 - e12295_13, 2019/03

 Times Cited Count:1 Percentile:11.99(Geosciences, Multidisciplinary)

no abstracts in English

JAEA Reports

Quick examination of heavy mineral composition based on chemical analysis using electron probe microanalyzer in the Tono Geoscience Center

Yonaga, Yusuke; Shimizu, Mayuko; Sano, Naomi; Ueki, Tadamasa; Yoshikawa, Kiyotaka*; Niwa, Masakazu

JAEA-Testing 2018-001, 29 Pages, 2018/07

JAEA-Testing-2018-001.pdf:3.82MB
JAEA-Testing-2018-001-appendix(CD-ROM).zip:1.64MB

Study on the formation process of mountains provides important clues for evaluating the uplift and erosion related to long-term changes of geological environment for geological disposal. Provenance analysis of detrital sediments is often be effective to understand the process. In the Tono Geoscience Center, quick and efficient mineralogical and chemical analyses for heavy minerals in basement rocks and sediments have been developed using the electron probe microanalyzer (JEOL JXA-8530F EPMA), as one of the promising tool for provenance analysis. To contribute evaluation of the analyses, sample preparation and EPMA analyses of heavy minerals were shown in this paper.

Journal Articles

Mineralogical analysis and dating using the JEOL JXA-8530F FE-EPMA at the JAEA Tono Geoscience Center

Shimizu, Mayuko; Sano, Naomi; Suzuki, Kazuhiro

Nagoya Daigaku Nendai Sokutei Kenkyu, 1, p.36 - 43, 2017/03

We established a CHIME monazite dating method using R$$_{rm R}$$ = 100 mm spectrometers and a provenance analysis method using heavy minerals for the dating and analysis of minerals. CHIME dating has traditionally been performed with conventional R$$_{rm R}$$ = 140 mm spectrometers for measurement of U, Th, and Pb. These spectrometers, however, have low count rates in measurements of Pb. We used a JEOL JXA-8530F FE-EPMA equipped with R$$_{rm R}$$ = 100 mm spectrometers, a system installed at Tono Geoscience Center in 2014, for the CHIME dating of monazite. We corrected the spectral interferences peculiar to R$$_{rm R}$$ = 100 mm spectrometers by the method of AA mli and Griffin (1975) for monazite analyses. We calculated the correction factors by a new interference correction method using natural monazites. We also established a quick quantitative analysis and identification method for heavy minerals using the EPMA.

JAEA Reports

Quantitative X-ray Fluorescence analysis of major and trace elements in rock samples at Tono Geoscience Center

Shimizu, Mayuko; Sano, Naomi; Shibata, Kenji*

JAEA-Testing 2016-004, 40 Pages, 2017/02

JAEA-Testing-2016-004.pdf:2.69MB

X-ray fluorescence analysis is one of the methods commonly used to reveal whole-rock chemical composition, which is basic information of rock samples. This report shows methods to prepare glass beads of fused samples and to use the X-ray fluorescence spectrometer (Rigaku ZSX Primus II) housed in Tono Geoscience Center, and the evaluation of precision and accuracy of the measurement.

Journal Articles

The H-Invitational Database (H-InvDB); A Comprehensive annotation resource for human genes and transcripts

Yamasaki, Chisato*; Murakami, Katsuhiko*; Fujii, Yasuyuki*; Sato, Yoshiharu*; Harada, Erimi*; Takeda, Junichi*; Taniya, Takayuki*; Sakate, Ryuichi*; Kikugawa, Shingo*; Shimada, Makoto*; et al.

Nucleic Acids Research, 36(Database), p.D793 - D799, 2008/01

 Times Cited Count:51 Percentile:74.53(Biochemistry & Molecular Biology)

Here we report the new features and improvements in our latest release of the H-Invitational Database, a comprehensive annotation resource for human genes and transcripts. H-InvDB, originally developed as an integrated database of the human transcriptome based on extensive annotation of large sets of fulllength cDNA (FLcDNA) clones, now provides annotation for 120 558 human mRNAs extracted from the International Nucleotide Sequence Databases (INSD), in addition to 54 978 human FLcDNAs, in the latest release H-InvDB. We mapped those human transcripts onto the human genome sequences (NCBI build 36.1) and determined 34 699 human gene clusters, which could define 34 057 protein-coding and 642 non-protein-coding loci; 858 transcribed loci overlapped with predicted pseudogenes.

JAEA Reports

Annual report on the environmental radiation monitoring around Toka1 Fue1 reprocessing plant; 1984(January - December)

Iwai, Makoto; *; Ishida, Junichiro; ; *; *; Hayashi, Naomi*; Asano, Tomohiro

PNC TN844 85-07, 145 Pages, 1985/02

PNC-TN844-85-07.pdf:4.71MB

This report presents current information from the environmental protection section, Tokai works, PNC on the radiation monitoring around the reprocessing plant during 1984. The report consists of general interpretive report on the results, individual interpretive reports and maximum radiation dose which may be received by hypothetical inhabitants, caused by discharge of radioactivity into both marine and terrestrial environments. Subsequent supplements include tabulations of results including meteorological observations and radioactivity measurements on discharge effluent from the plant. The environmental radiation monitoring around the Tokai reprocessing plant has been performed since 1975 based on the safety standard of the plant.

Oral presentation

Estimation of provenance rocks of the Toki gravel beds, the Tokai Group based on EPMA analyses of the heavy minerals

Shimizu, Mayuko; Sano, Naomi; Yasue, Kenichi; Shibata, Kenji*; Niwa, Masakazu; Suzuki, Kazuhiro

no journal, , 

no abstracts in English

Oral presentation

Estimation of provenance rocks based on EPMA analyses of the heavy minerals; A Case study of Byobuyama fault

Shimizu, Mayuko; Sano, Naomi; Ueki, Tadamasa; Yasue, Kenichi; Niwa, Masakazu; Suzuki, Kazuhiro

no journal, , 

no abstracts in English

Oral presentation

Examination of provenance analysis index by petrological and mineralogical approaches

Ueki, Tadamasa; Shimizu, Mayuko; Sano, Naomi; Niwa, Masakazu

no journal, , 

no abstracts in English

Oral presentation

Provenance analysis based on quick quantification of heavy minerals using EPMA

Shimizu, Mayuko; Sano, Naomi; Ueki, Tadamasa; Yonaga, Yusuke; Niwa, Masakazu

no journal, , 

no abstracts in English

Oral presentation

Identification of provenance rocks based on EPMA analyses of heavy minerals

Shimizu, Mayuko; Sano, Naomi; Ueki, Tadamasa; Yonaga, Yusuke; Yasue, Kenichi*; Niwa, Masakazu

no journal, , 

Oral presentation

Provenance analysis using quick examination of heavy mineral by EPMA; Case study in Horonobe area, Hokkaido

Yonaga, Yusuke; Sano, Naomi; Shimizu, Mayuko; Amamiya, Hiroki; Ueki, Tadamasa; Niwa, Masakazu

no journal, , 

no abstracts in English

Oral presentation

Dating of marine erosional terraces using cosmogenic nuclides; A Case study of the Hyuga City, Miyazaki Prefecture, southwest Japan (preliminary results)

Sueoka, Shigeru; Komatsu, Tetsuya; Matsushi, Yuki*; Yonaga, Yusuke; Sano, Naomi; Hirao, Noriaki*; Ueki, Tadamasa; Fujita, Natsuko; Kokubu, Yoko; Niwa, Masakazu

no journal, , 

no abstracts in English

Oral presentation

Provenance analysis using EPMA, case study of Horonobe area in Hokkaido

Yonaga, Yusuke; Sano, Naomi*; Amamiya, Hiroki*; Niwa, Masakazu; Yasue, Kenichi*

no journal, , 

no abstracts in English

Oral presentation

Low-temperature thermochronology of the Izu collision zone, central Japan; Implications for mountain building at an active arc-arc collision zone

Sueoka, Shigeru; Kobayashi, Yumi*; Fukuda, Shoma; Kohn, B. P.*; Yokoyama, Tatsunori; Sano, Naomi*; Hasebe, Noriko*; Tamura, Akihiro*; Morishita, Tomoaki*; Tagami, Takahiro*

no journal, , 

Multi-system thermochronometries were applied to the Izu collision zone, an active arc-arc collision zone in the central Japan, in order to reveal the mountain formation process. Nine granitic samples yielded zircon U-Pb ages of 10.2-5.8 Ma (n = 2), apatite (U-Th)/He ages of 42.8-2.6 Ma (n = 7), and apatite fission-track (AFT) ages of 44.1-3.0 Ma (n = 9). Thermal inversion analyses based on the AFT data suggest rapid cooling events at ca 5 Ma and 1 Ma in the collision zone and no such thermal/tectonic effect out of the zone. The Kanto Mountains are thought to be uplifted domally associated with the collision of the Tanzawa Block at ca 5 Ma. The Minobu Mountains and possibly the adjacent mountains could be uplifted by the collision of the Izu Block at ca 1 Ma. Mountain formation in the Izu collision zone is mainly controlled by the collisions of crustal blocks of the Izu-Bonin Arc and motional change of the Philippine Sea plate.

18 (Records 1-18 displayed on this page)
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