Nondestructive characterization of Antarctic micrometeorites collected at the Dome Fuji Station by synchrotron radiation X-ray fluorescence analysis

• Main Authors: Nakai,Izumi, Kondo,Nahoko, Itabashi,Masato, Sasaki,Miho, Terada,Yasuko, Terada,Kentaro, Noguchi ,Takaaki, Nakamura, Tomoki
• Format: Report
• Language: English
• Published: Department of Applied Chemistry, Faculty of Science, Science University of Tokyo/Department of Applied Chemistry, Faculty of Science, Science University of Tokyo/Department of Applied Chemistry, Faculty of Science, Science University of Tokyo/Department of Applied Chemistry, Faculty of Science, Science University of Tokyo/Department of Applied Chemistry, Faculty of Science, Science University of Tokyo/Department of Earth and Planetary System Science, Faculty of Science, Hiroshima University/Department of Materials and Biological Science, Ibaraki University/Department of Earth and Planetary Science, Graduate School of Science, Kyushu University 2000
• Subjects: Antarctic; Dome Fuji; Dome Fuji Station; Murchison; Antarc*
• Online Access: https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5984; http://id.nii.ac.jp/1291/00005984/; https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5984&item_no=1&attribute_id=18&file_no=1

The bulk trace element composition (Ca, Ti, Cr, Mn, Ni Cu, Zn, Ge, Se, Rb, Sr, Y, Zr, Mo) of eighty-three Antarctic micrometeorites was nondestructively analyzed using synchrotron radiation X-ray fluorescence analysis (SR-XRF), and these elements were characterized in terms of their abundance ratio relative to Murchison matrix composition. The relationship between heating history and chemical composition is also examined. We found a complementary relationship among I-type, S-type and unmelted AMMs in the micrometeorites' elemental abundance, which is consistent with the hypothesis that I-type and S-type spherules were separated from chondritic meteoroids.