Geological Study on translation and variation of earth materials in the curst and surface of the earth

本研究项目的研究结果总结如下：1)源自地幔的火成岩成岩过程及其时空变化：根据Sr同位素研究，认为低Sr同位素比值的球层物质侵入弧后至日本海地区的大陆地幔。弧后玄武岩产生的岩浆很可能是由气层的剧变引起的。2)地壳浅层、海底和地表环境火成岩架的蚀变和风化过程：怀拉基岩（zealite group）中AI和Si的排列顺序以及与怀拉基岩伴生的绿泥石-蒙脱石混合层矿物的组成层数比例受温度控制。此外，对日本盆地沉积物中的生物成因磁铁矿和粘土矿物进行了矿物学描述。3)沉积油层表面的沉积干旱蚀变过程：马格纳凹北部地区近第三系浊积砂岩中石榴石、角闪石和辉石的组成由于地层和地点的不同而不同，说明它们的物源不同。4)地层和地表钙化组织的形成和生物矿物的成岩作用：齿状突的臼齿化石将铁等金属元素从周围环境中保存下来。在成岩作用过程中，硫化物矿物不仅在牙齿表面沉积，而且在牙齿组织中也有沉积。初级微量元素在牙釉质组织中保存得很好。5)变形构造形成过程中微结构和矿物组成的变化：根据变形阶段和矿物组成的变化，讨论了九州Hidaka变质带的隆升过程和Shimanto带的增生过程。少

The results obtained from this research project are summarized as follows. 1) The petragenetic processes of igneous rocks derived from mantle and their variatiatis in time atid space : On the basis Of Studies on Sr isotopes, it seems that as thellosphere material low in Sr isatopes ratio intruded into continental mantle beneath back-arc to the Japan Sea region. Magmas produced back arc basalts are probably caused by the upheaval of the astheriusphere. 2) Alteration and weathering processes of the igneous racks in shallow crustal level, ocean floor and ground surface environments : The ordering of AI and Si in wairakite (zealite group) and the proportion of constituent layers of chlorite-smectite mixed layer minerals associated with wairakite are controlled by the temperature. Furthermore, biogenetic magnetites and clay minerals in the sediments of the Japan Basin are described mineralogically. Then their distribution patterns might be correlated with the variations in the environments … More of the Japan Basin. 3) Depositional arid alteration processes of sediments oil ground surface : Garnet, hornbleride and pyroxene of the turbiditic sandstones of Neagene Tertiary from the northern Fossa Magna regions indicate different compositions due to the difference in stratigraphy and localities, suggesting their differences in provenances. 4) Formation of calcified tissues and diagenesis of biomineral in strata and on land surface : The molar fossil of Desmostylus keeps metal elements such as iron from surrounding environment. Sufide minerals are depasited not only on the tooth surface, but also in tooth tissues in the course of diagenesis. Primary minor elements are well preserved in enamel tissues. 5) Variations in microstructures and compositions of minerals during the formation of deformation structures : The uplift processes of the Hidaka metamorphic belt and accretionary of the Shimanto belt of Kyusitu are discussed on the basis of deformation stages and variations in mineral compositions. Less