@article{oai:nipr.repo.nii.ac.jp:00006000, author = {Terada, Kentaro and Yada, Toru and Kojima, Hideyasu and Noguchi, Takaaki and Nakamura, Tomoki and Murakami, Toshio and Yano, Hajime and Nozaki, Wataru and Nakamuta, Yoshihiro and Matsumoto, Noriko and Kamata, Junya and Mori, Takeshi and Nakai, Izumi and Sasaki, Miho and Itabashi, Masato and Setoyanagi, Takehito and Nagao, Keisuke and Osawa, Takahito and Hiyagon, Hajime and Mizutani, Sadahiro and Fukuoka, Takaaki and Nogami, Ken-ichi and Ohmori, Rie and Ohashi, Hideo}, journal = {Antarctic meteorite research}, month = {Mar}, note = {P(論文), From November 1998 to January 1999,the 39th Japanese Antarctic Research Expedition (JARE-39) undertook Japanese first large-scale collection of Antarctic micrometeorites (AMMs), with sizes larger than 10μm, at the Meteorite Ice Field around the Yamato Mountains in Antarctica (at three different locations, for a total of 24 collection sites). The number of collected AMMs larger than 40μm is estimated to be about 5000. Here we present the general characterization (i.e., micro-morphology and surface chemical composition using SEM/EDS) of ∿810 AMMs chosen from 5 of the 24 sites. Additionally, the mineral composition of 61 out of 810 AMMs was determined by Synchrotron X-ray radiation. Preliminary results on mineralogical and chemical compositions show similarities with that of previous studies, even though a pronounced alteration of some AMMs is noticed. A correlation is found between the Mg/Si ratio at the sample's surfaces of unmelted AMMs and the age of snow/ice in which the AMMs are embedded.}, pages = {89--107}, title = {General characterization of Antarctic micrometeorites collected by the 39th Japanese Antarctic Research Expedition: Consortium studies of JARE AMMs (III)}, volume = {14}, year = {2001} }