A consortium study of Antarctic micrometeorites recovered from the Dome Fuji Station

• Main Authors: Noguchi,Takaaki, Imae,Naoya, Nakamura,Tomoki, Nozaki, Wataru, Terada,Kentaro, Mori,Takeshi, Nakai,Izumi, Kondo,Nahoko, Sasaki,Miho, Murakami,Toshio, Fukuoka,Takaaki, Nogami,Ken-ichi, Ohmori,Rie, Ohashi,Hideo
• Format: Report
• Language: English
• Published: Department of Materials and Biological Sciences, Ibaraki University/National Institute of Polar Research/Earth and Planetary Sciences, Graduate School of Science, Kyushu University/Earth and Planetary Sciences, Graduate School of Science, Kyushu University/Department of Earth and Planetary System Science, Hiroshima University/Department of Earth and Planetary System Science, Hiroshima University/Department of Applied Chemistry, Science University of Tokyo/Department of Applied Chemistry, Science University of Tokyo/Department of Applied Chemistry, Science University of Tokyo/Computer Center, Gakushuin University/Department of Environmental Systems, Faculty of Geo-environmental Science, Rissho University/Department of Physics, Dokkyo University, School of Medicine/Department of Physics, Dokkyo University, School of Medicine/Department of Ocean Science, Tokyo University of Fisheries 2000
• Subjects: Antarctic; Dome Fuji; Dome Fuji Station; Antarc*
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5982; http://id.nii.ac.jp/1291/00005982/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5982&item_no=1&attribute_id=18&file_no=1

Deposits in the water tank at the Dome Fuji Station were collected by the 37th Japanese Antarctic Research Expedition team in 1996. We recovered 233 micrometeorites from the deposits. A consortium study was started in late 1998 to investigate mineralogy, petrology, bulk chemistry, and isotopic compositions of the micrometeorites. This is the first case of an organized study of micrometeorites in Japan, in order to establish the methods to investigate micrometeorites routinely. Consortium results on mineralogy, petrology, minor and trace element compositions, isotopic compositions of noble gases of the micrometeorites are reported in this volume. We also found a sequence of mineralogical and compositional changes of micrometeorites experienced from frictional heating during atmospheric entry. INAA and ion probe studies are now in progress.