The Ophiolites in the Outer Zone of Southwest Japan and their development mechanism

本研究的主要结果，主要使用自动X射线荧光分析仪（系统3080），如下所示;1.对于来自Ogawa皮带和Nishiyama II皮带的61个样本，来自Chichibu Southern皮带的石英石、石英石和豆腐，我们分析了化学： 11个主要和9个次要组件。作为一个结果，很明显，小川腰带的领子是起源于皮肤的，而西山II腰带的那些是半球形腰带的。《大块化学组合物和九州、石库和基半岛带中最常见的金属的相对性clinopyroxene化学》，向海洋地板上的石棉展示了更多的接近（今天的《你的每日文摘》）。在另一边，金属岩石中的相对性clinopyroxene具有碱性岩浆的亲和力。确切地说，这一事实是，这些岩石和碱性岩石混合在一起，就像土石-黑色素一样，它们与彼此保持一致，并描述了Shimanto Belt的一个复杂的吸收过程。Kii半岛东部部分Kurosegawa Tectonic区的蛇虫表演了如下的发展过程;（1）这块岩石曾在300 ° C左右被蛇咬过一次。（2）它们在大约400 - 500 C和甲烷磷酸橄榄和clinopyroxene形成的高温下加热。（3）他们又被转化为Serpentinite-melange开发期间的Serpentinized岩石。Mikabu Ophiolites在Kichijou-san（Aichi Prefecture）得到了充分的切割和破碎。作为一个结果，他们考虑高P/T和高T/P变形岩石，并且可能已经混合了其他由复杂的melange开发过程。在卡穆科坦奥菲奥利特带的石灰石基质中的元基岩石，钙碱，tholeitic和钙碱岩石中。它们可能是由复杂的纹理过程混合而成的。

The main results by this studies, mainly using the automatic X-ray fluorescence analyser(system 3080), are as follows;1. For 61 samples of cherts, siliceous mudstones, mudstones and tuffs from the Ogawa belt and the Nishiyama II belt in the Togano Group (middle - upper Jurassic) of the Chichibu Southern Belt, we analysed chemically: 11 major and 9 minor components. As a result, it became clear that the cherts of the Ogawa belt is of pelagic in origin and those of the Nishiyama II belt is of hemipelagic.2. The bulk chemical compositions and relic clinopyroxene chemistry of the most metabasalts from the Shimanto Belt in Kyushu, Shikoku and Kii Peninsula, show much closer to those of the ocean-floor basalt(the present-day abyssal tholeiite). On the other hand, the relic clinopyroxenes in the metadoleritic rocks have alkaline magma affinity. Conclusively, the fact that thetholeiitic and alkaline rocks are mixed within the mudstone-melanges as exotic bodies contiguous to each other, indicates a complicated accretion process of the Shimanto Belt.3. The serpentinites in the Kurosegawa Tectonic Zone of eastern part of Kii Peninsula show processes of development as follows;(1) this rocks were serpentinized once at about 300゜C. (2) They heated at higher temperature of about 400゜ - 500゜C and metamorphosed olivine and clinopyroxene were formed. (3) They were metamorphosed again to the serpentinized rocks during serpentinite-melange development.4. The Mikabu Ophiolites at Kichijou-san(Aichi Prefecture) are intensively sheared and broken. As a result, they consist of high P/T and high T/P metamorphic rocks and might have been mixed each other by complicated process of melange development.5. The meta-basic rocks in the sheared mudstone matrix of the Kamuikotan Ophiolite Belt consist of calc-alkaline, tholeiitic and alkaline rocks. They might be mixed by complex tectonic process.