高感度・高分解能イオンマイクロプローブ(SHRIMP)を用いた地球惑星科学

抄録

An ion microprobe provides advantages of in-situ isotopic measurements with high spatial resolution. It has been expected as a powerful analytical tool with a wide application of earth and planetary sciences. Sensitive High Resolution Ion MicroProbe (SHRIMP) developed at Australian National University has been successfully used to determine U-Th-Pb dating of a single grain zircon from Precambrian rocks. Although it is often recognized simply as a zircon analysis device, its capabilities should be applied to other geo- and cosmochemical studies. In this article we show the fundamental structure of SHRIMP, progress, recent studies and perspectives by using SHRIMP.