Estimation of thermal/denudation histories in the Tanigawa-dake area based on thermochronological methods

Minami, Saki*; Sueoka, Shigeru; Fukuda, Shoma; Nagata, Mitsuhiro; Kohn, B. P.*; Yokoyama, Tatsunori; Kagami, Saya; Kajita, Yuya*; Tagami, Takahiro*

Fuisshon, Torakku Nyusureta, (35), p.22 - 26, 2022/12

no abstracts in English

Two pulse intrusive events of the Pliocene Tanigawa-dake granites revealed from zircon U-Pb dating

Minami, Saki*; Nagata, Mitsuhiro; Sueoka, Shigeru; Fukuda, Shoma; Kajita, Yuya*; Ogita, Yasuhiro; Kagami, Saya; Yokoyama, Tatsunori; Tagami, Takahiro*

Earth, Planets and Space (Internet), 73(1), p.231_1 - 231_7, 2021/12

https://doi.org/10.1186/s40623-021-01556-4

Estimation of denudation history of the Kitakami Mountains based on apatite fission-track thermochronology

Kajita, Yuya*; Sueoka, Shigeru; Fukuda, Shoma; Yokoyama, Tatsunori; Kagami, Saya; Nagata, Mitsuhiro; Tagami, Takahiro*

Fuisshon, Torakku Nyusureta, (34), p.14 - 16, 2021/12

For reconstructing the uplift/denudation history of the fore-arc side of the NE Japan Arc on geologic timescales, U-Pb dating and apatite fission-track (AFT) thermochronometry were applied to granitoids in Kitakami mountains. In addition, U-Pb dating for the Jodogahama rhyolite at the easternmost Kitakami mountains was also carried out to estimate the timing of volcanism and its thermal effect. Consequently, U-Pb ages of 122.7 Ma and 117.3 Ma for 2 samples of the Cretaceous granites and AFT ages ranging from 156.8 Ma to 70.3 Ma of 15 samples were obtained. Concerning the Jodogahama rhyolite, U-Pb age of 44.3 Ma was obtained. Integrated AFT data of this study and previous ones in Kitakami mountains, the trend of ages shows younging toward west. Although such age trend can be explained by volcanism of the Jodogahama reflecting the migration of a paleo-volcanic front, all AFT ages exhibited significantly older than U-Pb data of the Jodogahama and the thermal inverse modeling based on track length distributions provided slow cooling patterns. These observations did not supported the reheating of volcanism as a cause of age trend. As future prospects, we are planning to improve the reliability of age data based on additional analyses and apply an ultra low-temperature thermochronometer, e.g., ESR method.

Development of divertor simulation research in the GAMMA 10/PDX tandem mirror

Nakashima, Yosuke*; Sakamoto, Mizuki*; Yoshikawa, Masayuki*; Oki, Kensuke*; Takeda, Hisahito*; Ichimura, Kazuya*; Hosoi, Katsuhiro*; Hirata, Mafumi*; Ichimura, Makoto*; Ikezoe, Ryuya*; et al.

Proceedings of 25th IAEA Fusion Energy Conference (FEC 2014) (CD-ROM), 8 Pages, 2014/10

Clarification of hierarchical dynamics in protein

Nakagawa, Hiroshi; Inoue, Rintaro*; Oda, Takashi*; Yagi-Utsumi, Maho*; Saio, Tomohide*; Oroguchi, Tomotaka*; Nagata, Yuya*; Sugiyama, Masaaki*; Sato, Mamoru*; Kawakita, Yukinobu; et al.

no journal, , 

Proteins have hierarchical structures and hierarchical dynamics. Neutron scattering is expected to be a promising experimental technique to study the hierarchical structure on the nanometer order related to biological functions and the structure and dynamics on the pico- to nanosecond time scale. The research was initiated with the aim of elucidating the structure and dynamics of these spatiotemporal scales (MLF Long-term Proposal 2019L0300). In this proposal, we used samples of characterized functional multidomain proteins, including folded proteins and naturally denatured proteins, to promote our research. Researchers in a wide range of specialized fields collaborated to develop "a protein partial deuteration method utilizing the features of neutron scattering", "a wide spatio-temporal seamless analysis method by linking various neutron spectrometers", "a method for visualizing protein dynamics by linking neutron and computational science," and "a neutron quasi-elastic scattering measurement method for dilute protein solutions" and to We have pioneered a new generation of neutron structural biology that will lead protein science in Japan.

Analytical evaluation of the piping response subject to time history analysis with multiple excitations

Takahashi, Keita; Kato, Ryoma; Ando, Masanori; Matsuzawa, Hidetsugu*; Nagata, Yuya*; Kaneko, Naoaki*

no journal, , 

no abstracts in English

Estimation of intrusion ages in the Miocene-Pliocene granodiorite around the Tanigawa-dake based on zircon U-Pb dating

Minami, Saki*; Nagata, Mitsuhiro; Sueoka, Shigeru; Fukuda, Shoma; Kajita, Yuya*; Ogita, Yasuhiro; Yokoyama, Tatsunori; Kagami, Saya; Tagami, Takahiro*

no journal, , 

no abstracts in English

Clarification of hierarchical dynamics in protein

Nakagawa, Hiroshi; Inoue, Rintaro*; Oda, Takashi*; Yagi, Maho*; Saio, Tomohide*; Oroguchi, Tomotaka*; Nagata, Yuya*; Sugiyama, Masaaki*; Sato, Mamoru*; Kawakita, Yukinobu; et al.

no journal, , 

Proteins have hierarchical structures and hierarchical dynamics. The importance of analyzing the structural dynamics of proteins in solution has been increasing in recent years, and neutron scattering is expected to be an experimental method to study the hierarchical structures on the nanometer order and the dynamics on the pico- to nanosecond time scales, which are relevant to biological functions. In this study, we used the quasi-elastic neutron scattering and small-angle neutron scattering instruments installed at MLF to elucidate the dynamics of these structures in space and time. We aim to establish a new generation of neutron structural biology that will lead protein science in Japan.

Thermal/denudation histories in the Tanigawa-dake region based on multi-thermochronometries

Minami, Saki*; Sueoka, Shigeru; Fukuda, Shoma; Nagata, Mitsuhiro; Kohn, B. P.*; Yokoyama, Tatsunori; Kagami, Saya; Kajita, Yuya*; Tagami, Takahiro*

no journal, ,