Quantitative study on the volume of granitic melt, evolved by partial melting of pelitic metamorphic rocks

本研究项目的目的是明确泥质变质岩部分熔融形成的花岗质熔体的体积。因此，将变质岩石学与火成岩岩石学联系起来具有重要意义。在这个项目的第一年，我提供了“低污染岩石破碎实验室”。因此，我买了一个颚式破碎机和其他岩石破碎设备。这项准备工作差不多完成了。但它仍然是一个问题，从颚金属铬污染到一些样品是不可忽视的，在这种情况下，酸性岩石。对日高变质带和上津地区进行了科学研究。特别是在上津地区发现尖晶石+石英组合，是重要成果之一。这是在日本岛上的首次发现。揭示了岛弧条件下可能发生超高温变质作用（Shimura et al., 2002 in press）。然后我们可以描述关系，如地壳物质和火成岩（Kagashima和Shimura， 2001）。在Hidaka变质带，发育刚玉-红柱石-电气石伟晶岩脉。这对今后研究Hidaka地壳热史具有重要意义。

The aim of this research project is, to make clear about the volume of granitic melt that evolved by partial melting of pelitic metamorphic rocks. Therefore it is important to connect the metamorphic petrology with the igneous petrology.In the first year of the term on this project, I provide "the low contamination rock crushing laboratory". Therefore I bought a jaw-crusher and other rock-crushing equipments. This preparation is as good as done. But it had remained as a problem, that contamination of Cr from the jaw metal to some sample is not negligible, in case of such as acidic rocks.Scientific research has been done on the Hidaka Metamorphic Belt and on the Uetsu area. Especially, spinel + quartz assemblage is found from the Uetsu area, is one of the important results. It is the first finding from the Japanese Island. I revealed that such as the ultrahigh temperature metamorphism could be occur in the island-arc condition (Shimura et al., 2002 in press). Then we could describe the relation, such as the crustal materials and igneous rocks (Kagashima and Shimura, 2001). In the Hidaka Metamorphic Belt, corundum-andalusite-tourmaline pegmatite vein is fined out. It is important thing for the future study on the heat history of the Hidaka Crust.