Host: Abstracts of Annual Meeting of the Geochemical Society of Japan
The current topography of the Sea of Japan had been formed by many times volcanic activities and movements of the crust in the past. Therefore, the substances that originate in the continent and island arc, coexist in the marine sediments at the bottom of the Sea of Japan. In addition, it is easy to dwell more than the open sea because of Sea of Japan is a typical marginal sea in the world. In this study, we calculate the deposition rate and depositional age by measuring the radioactivity of Cs-137 and Pb-210, and discussed origin and sedimentary environment of sediments using major elements such as Ca, lanthanides and trace elements such as Th and U.
