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Japan-Korea Joint Research on Antarctic Meteorites

日韩南极陨石联合研究

基本信息

批准号：
06044247
负责人：
IKEDA Yukio
金额：
--
依托单位：
Ibaraki University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Overseas Scientific Survey.
财政年份：
1994
资助国家：
日本
起止时间：
1994 至无数据
项目状态：
已结题

项目摘要

Japan has collected about nine thousands of meteorites from Antarctica since 1969, and Japanese meteorite research has become active last twenty years. In contrast, Korea has few meteorites, and the meteorite research was not so active in Korea. Korea, however, has a plan to collect many meteorites from Antarctica in future, and Korean side scientists were very eager about establishing a Korea-Japan joint research on Antarctic meteorites.The objectives of this study were Japan-Korea joint-research on Japanese Antarctic meteorites in order to promote the activity of meteorite research in both Korea and Japan and to clarify the formation and evolution of meteorite parent bodies and protoplanets.The head investigator of this project, Prof.Y.Ikeda, visited Seoul National University to make an arrangement of the Japan-Korea joint research from September 24,1994 to October 11, and another Japanese investigator, Associate Prof.M.Kimura, also visited Seoul National University and Korean Ocean Research and Development Institute to carry out the mineralogical study on Antarctic meteorites from March 2,1995 to March 9. On the other hand, the head invetigator of the Korean side project, Prof.M.S.Lee, visited Ibaraki Unversiry, Tokyo University, and National Institute of Polar Research (Tokyo) to promote the Japan-Korea joint research from December 23,1994 to January 22,1995.We carried out the mineralogical and petrological studies on unequilibrated and equilibrated chondites and HED meteorites, using an electron-probe microanalyzer. Among them, the Yamato-8449 meteroite was a rare CR chondrite, and we studied the hydration of chondrule glass in the meteorite and concluded that the hydration took place in the early solar nebula prior to the accretion on to the parent body. The Yamato-75011 meteorite is a unique polymict eucrite, and the petrological study revealed that it was produced on the surface region of the HED parent body, probably No.4 asteroid Vesta.

自1969年以来，日本已经从南极洲收集了大约9000颗陨石，日本的陨石研究在过去20年里变得活跃起来。相比之下，韩国的陨石较少，因此对陨石的研究并不活跃。但是，韩国计划在未来收集更多的南极陨石，韩方科学家也非常希望建立韩日南极陨石共同研究。本次研究的目的是日韩联合研究日本南极陨石，以促进韩国和日本的陨石研究活动，并澄清陨石母体和原行星的形成和演化。这个项目的首席研究员，y教授。池田教授于1994年9月24日至10月11日访问首尔大学，为日韩联合研究作了安排。1995年3月2日至9日，木村还访问了首尔大学和韩国海洋研究院，对南极陨石进行了矿物学研究。另一方面，韩国项目的首席研究员，m.s.教授。1994年12月23日至1995年1月22日，为促进日韩联合研究，李光宰访问了茨城市大学、东京大学、国立极地研究所（东京）。利用电子探针微量分析仪对非平衡和平衡球粒陨石和HED陨石进行了矿物学和岩石学研究。其中，yamoto -8449陨石是一颗罕见的CR球粒陨石，我们研究了陨石中球粒玻璃的水化作用，得出水化作用发生在太阳星云早期，而不是吸积到母体。Yamato-75011陨石是一种独特的多晶长辉长岩，岩石学研究表明它产生于HED母体（可能是4号小行星灶神星）的表面区域。