GRANITE PROVINCES AND ASSOCIATED ORE DEPOSITS OF JAPAN AND OF THE CONTINENTAL MARGIN ADJACENT THERETO

从稀土元素配分、初始锶比值、花岗岩类类型等方面对比了日大带与韩国侏罗纪花岗岩类，从中可以看出两地侏罗纪花岗岩类的异同。它们是：1)两个地区侏罗纪花岗岩类的模式组成相似；2)日达带侏罗纪花岗岩类的放射性年龄比韩国侏罗纪花岗岩类的年龄稍早；3)侏罗纪花岗岩类的类型、初始锶比值和稀土元素配分模式不同，这意味着两个地区侏罗纪花岗岩类的物质来源和成因不同。虽然两地侏罗纪花岗岩类的地质关系尚不成熟，但从两区初始锶比值的差异来看，韩国侏罗纪花岗岩类与日达带侏罗纪花岗岩类相比，可能位于大陆一侧。

A comparison of the Jurassic granitoids between the Hida belt and South Korea has been made utilizing the REE(rare earth element) pattems, initial Sr ratios, and types of granitoids.From the data, it will be seen that similarities and dissimilarities of the Jurassic granitoids between two regions. These are: 1) The modal composition of the Jurassic granitoids are similar between the two regions; 2) the radiometric ages of the Jurassic granitoids in the Hida belt are a little older than the ages of the Jurassic granitoids in South Korea; 3) the types, initial strontium ratios, and REE patterns of the Jurassic granitoids are different.These facts mean that source materials and genesis of the Jurassic granitoids between two regions were different. Although it is still immature to conclude the geological relations of the Jurassic granitoids between the two regions, from the difference in the initial strontium ratios between the two regions, it is suggested that the Jurassic granitoids in South Korea may have been situated in the continental side compared with the Jurassic granitoids in the Hida belt.