Editorial Board

Executive Editor

• Yoshio Takahashi, Department of Earth and Planetary Science, The University of Tokyo, Japan ; email: gj@geochem.jp

  Cycles of various elements based on concentrations, isotope ratios, and chemical speciation. Development of new methods of X-ray spectroscopy (XAFS, XRF, and X-ray microscopy). Chemistry at solid-water interface and its systematic understanding. Rare earth elements geochemistry and resources. Environmental geochemistry of toxic elements and radionuclides. Aerosol chemistry. Development of geochemical isotope tool based on chemical state analysis.

Vice Executive Editors

• Tsubasa Otake, Division of Sustainable Resources Engineering, Hokkaido University, Japan ; email: gj@geochem.jp

  I have been working on geochemical cycling and concentration of elements near Earth's surface environments in both economic and environmental perspectives. Redox evolution of the surface environments and hydrothermal geochemistry are related. Employed research techniques include geochemical and isotopic analyses or rock samples, laboratory experiments, and theoretical calculations.

• Koichi Mimura, Department of Earth and Environmental Sciences, Nagoya University, Japan, JAPAN ; email: gj@geochem.jp

  His research interests include the origin of life and the evolution of organic materials in the solar system.

• Shohei Hattori, International Center for Isotope Effect Research (ICIER) and School of Earth Sciences and Engineering, Nanjing University, CHINA ; email: gj@geochem.jp

  website: https://www.icier-nju.org/Shohei/

  Atmospheric and marine geochemistry, including polar regions. My research focuses on developing and applying stable isotope and isotopologue analysis techniques to aerosols, trace gases, seawater, and ice cores, in order to better understand biogeochemical cycles, atmospheric reactions, air–sea exchange, and climate-relevant processes in the Earth system.
  

• Keiji Horikawa, Faculty of Science, Academic Assembly, University of Toyama, JAPAN ; email: gj@geochem.jp

  Inorganic geochemistry, Paleoclimatology, Chemical Oceanography, and Sedimentology
  With expertise in inorganic geochemistry, oceanography, and sedimentology, I investigate Earth’s climate history.
  I analyze marine sediments to unravel past variability in ocean and climate systems during the Quaternary, Pliocene, and Miocene.
  My goal is to understand the dynamic interplay between ocean circulation and cryospheric changes.

• Tsuyoshi Iizuka, Department of Earth and Planetary Science, The University of Tokyo, JAPAN ; email: gj@geochem.jp

  Isotope geochronology and geochemistry with applications to continental growth, early Earth differentiation, and planet formation.

• Michael Bau, CritMET (Critical Metals for Enabling Technologies) School of Science Constructor University Campus Ring 1 28759 Bremen, Germany ; email: gj@geochem.jp

  Michael Bau's research foci are the distribution and biogeochemical behavior of Rare Earth Elements and other Critical Metals, their evolution from Early Earth to the Anthropocene, their application as geochemical proxies, and their resources and environmental impacts in both marine and terrestrial systems.

• Karen H Johannesson, School for the Environment, University of Massachusetts Boston, Boston, Massachusetts, 02125, USA ; email: gj@geochem.jp

  Prof. Johanneson’s research focuses on environmental geochemistry, trace element biogeochemistry, trace element speciation in natural waters, geochemical modeling, chemical hydrogeology, and reaction path and reactive transport modeling.

Associate Editors

• Katsuhiko Suzuki, Submarine Resources Research Center, JAMSTEC, Japan ; email: katz@jamstec.go.jp

  website: https://www.jamstec.go.jp/souran/html/Katsuhiko_Suzuki_8b2a0-e.html

  Isotope geochemistry on mantle and sedimentary rocks

• Conel M. O'D. Alexander, DTM, Carnegie Institution of Washington, USA

  His research focuses primarily on the petrology and chemistry of the most primitive chondritic meteorites and their constituent components (e.g., chondrules, matrix, organics, presolar grains, and water) with the aim of elucidating the major processes involved in the formation and early evolution of the Solar System.

• Katsuro Anazawa, Department of Natural Environmental Studies, The University of Tokyo, Japan

  Inorganic environmental hydrochemistry

• Yoshihiro Asahara, Department of Earth and Environmental Sciences, Nagoya University, Japan

  Isotope geochemistry on sediment and rock

• Moonsup Cho, School of Earth and Environmental Sciences, Seoul National University, Korea

  His research mainly deals with the geology and tectonics of various terranes in the Korean Peninsula. Current research is focused on detrital zircon geochronology of the Gyeonggi Marginal Belt, Korea, as an essential component of the Qinling–Gyeonggi microcontinent.

• Qiaohui Fan, Northwest Institute of Eco-Environment & Resources, CAS, China

  My research is mainly following up the related fields of environmental geochemistry, environmental chemistry and environmental radiochemistry, and focusing on the interaction mechanisms of heavy metals and/or radionuclides at solid-water interface at molecular level.

• Gabriel Filippelli, Center for Urban Health, Department of Earth Sciences, Indiana University-Purdue University Indianapolis (IUPUI), USA
• Keisuke Fukushi, Institute of Nature and Environmental Technology, Kanazawa Univeristy, Japan
• Axel Hofmann, Department of Geology, University of Johannesburg, SouthAfrica

  Field geology of supracrustal rocks in Archaean terrains; comparative studies of early and late Archaean greenstone belts; hydrothermal alteration and gold mineralization; Archaean surface processes and crustal evolution; habitat of early life.

• Xiao-Long Huang , Guangzhou Institute of Geochemistry, CAS, China
• Hikaru Iwamori, Earthquake Research Institute, The University of Tokyo, Japan
• Tetsu Kogiso, Graduate School of Human and Environmental Studies, Kyoto University, Japan

  experimental petrology, igneous petrology

• Seung-Gu Lee, Geological Research Division, Korea Institute of Geoscience and Mineral Resources, Korea

  My main research tool is rare earth element and their radiogenic and stable isotope geochemistry in geological rocks and meteorites. I also applied these tools to hot-spring water and stream sediments. Recently, I also started to develop precise and accurate stable isotope ratio of REEs using MC-ICP-MS to understand stable isotope fractionation during magma evolution processes.

• Wei Li, School of Earth Sciences and Engineering, Nanjing University, China
• Harue Masuda, Graduate School of Science, Osaka City University, Japan

  Main interests are in aqueous geochemistry and water-rock/sediments interaction, including pollution of hydrosphere and pedosphere, diagenetic reaction in both of subareal and oceanic crusts, and hydrothermal systems.

• Shawn McGlynn, ELSI, Tokyo Institute of Technology, Japan

  geobiology

• Divakar Naidu, National Institute of Oceanography, India
• Hisashi Narita, School of Marine Science and Technology, Tokai University, Japan
• Naohiko Ohkouchi, Institute of Biogeosciences, JAMSTEC, Japan

  Biogeochemical cycles based on the distribution organic compounds and their isotopic compositions in nature.

• Yuji Orihashi, Faculty of Science and Technology, Hirosaki University, Japan

  I am interested in igneous petrology, geology and geochronology for a rock worldwide, particularly in Asia and South America.

• Haibo Qin, Guiyang Institute of Geochemistry, CAS, China

  Enviromental geochemistry, Molecular geochemistry, Trace element speciation

• M. Satish-Kumar, Department of Geology, Niigata University, Japan

  My specialization is on stable (carbon, oxygen and sulfur) and radiogenic (Sr-Nd-U-Th-Pb) isotope geochemistry in understanding crustal processes, including metamorphism and magmatism. I am also interested in fundamental isotope fractionation processes and recycling of elements and isotopes in deep earth, as well as the process that were active in the early Earth.

• Ken Sawada, Department of Earth and Planetary Sciences, Hokkaido University, Japan

  Organic Geochemistry based on biomarker and kerogen (humic substance and geomacromolecule) analyses of sediment, fossil, and living organism (culture) samples. Paleoenvironmental investigation of marine/lacustrine sediments, peat, and coaly sediment. Thermal experiment for kerogen chemistry.

• Gen Shimoda, Geological Survey of Japan, The National Institute of Advanced Industrial Science and Technology, Japan

  Isotope Geochemistry and mantle Geochemistry

• Kyung-Hoon Shin, Environmental Marine Sciences, Hanyang University, Korea

  My research interests include the related fields of marine organic geochemistry, environmental studies, environmental biogeochemisty with the application of  stable isotopes and molecular biomarkers 

• Yoshiki Sohrin, Institute for Chemical Research, Kyoto University, Japan

  Analytical chemistry, Hydrospheric chemistry

• Zhi-Guang Song, Guangzhou Institute of Geochemistry, CAS, China
• Shogo Tachibana, Department of Earth and Planetary Science, The University of Tokyo, Japan

  Cosmochemistry; Laboratory Experiments

• Yoshinori Takano, Department of Biogeochemistry, JAMSTEC, Japan

  Organic Geochemistry, Organic Astrochemistry

• Kazuya Tanaka, Advanced Science Research Center, JAEA, Japan

  Low temperature geochemistry and environmental radioactivity

• Maria L. G. Tejada, Volcanoes and Earth's Interior Research Center, JAMSTEC, Japan

  Her research involves investigation of Large Igneous Provinces, focusing mostly on oceanic plateaus and the utilization of radiogenic isotopes for tracing mantle sources and Earth processes.

• Kentaro Terada, Department of Earth and Space Science, Osaka University, Japan

  Chronology, meteorite, In-situ U-Pb dating

• Kuo-Lung Wang, Institute of Earth Sciences, Academia Sinica, Taiwan

  isotope geochemistry; igneous petrogenesis

• Ji-Feng Xu, China Univ. of Geosciences, Beijing, China
• Yasuhiko Yamaguchi, Lake Biwa Environmental Research Institute, Japan

  Organic biogeochemistry, Aquatic environments

• Toshiro Yamanaka, School of Marine Resources and Environment, Tokyo University of Marine Science and Technology, Japan

  I’m interested in fate of the organic matters preserved in unconsolidated and consolidated sediments and material cycles of biophile elements, C, N, S, through the geosphere–hydrosphere–atmosphere–biosphere. So, I measure composition of biomarker molecules and stable isotopic ratios of the biophile elements in the sedimentary organic matters and organisms to reveal their sources and maturity. Particularly, interaction between sedimentary organic matter and hydrothermal fluids and chemosynthesis-based animals relying on geofluid emitting from seafloor are main target of my research.

• Yusuke Yokoyama , Atmosphere and Ocean Research Institute, The University of Tokyo, Japan

  Professor Yokoyama’s research interests are Paleoclimatology and Earth Surface Processes. He is using various isotopes such as radiocarbon, uranium series dating and terrestrial cosmogenic nuclides to understand the Earth systems.

• Chen-Feng You, Department of Earth Sciences, National Cheng Kung University, Taiwan

  marine isotope geochemist, working on B and Li isotopes in subduction zone

• Hisayoshi Yurimoto, Natural History Sciences, Hokkaido University, Japan

  His research develops novel instruments (SIMS and SNMS) to anatomize meteorites and extraterrestrial materials including returned samples by planetary exploration, and applies the isotopic and chemical approaches to understanding the origin and evolution of the solar system and planets.

• Dmitry Zedgenizov, The Zavaritsky Institute of Geology and Geochemistry of the Ural Branch (UB) of the Russian Academy of Sciences (RAS), Russia
• Yong-Fei Zheng, School of Earth and Space Science, University of Science and Technology of China, China

  Geochemistry of metamorphic and magmatic rocks at convergent plate margins

• Di-Cheng Zhu, School of Earth Science and Mineral Resources, China University of Geosciences, China

  His research interests include the crustal formation in collision zones, the Paleogeographic reconstructions of the Tibetan Tethys, and the evolution of the Tibetan Plateau from magmatic perspective.

• Yoko Kebukawa, Department of Earth and Planetary Sciences, Institute of Science Tokyo, JAPAN ; email: kebukawa.y.aa@m.titech.ac.jp

  Her research interest is organic matter in extraterrestrial materials, its origins, and roles in the early Solar System history. She has been studying organic matter in meteorites using various analytical methods, as well as experimental simulations and kinetic studies for organic matter formation and evolution.

• Cheng Cao, Nanjing University, CHINA ; email: chengcao@nju.edu.cn

  My research covers the application of metal isotopes to reconstruct Earth's paleo-ocean chemistry and global biogeochemical cycles that influnces the ocean reservior, including silicate weathering, reverse weathering, and hydrothermal systems.