Secular variation of marine Os isotopes reconstructed from Fe-Mn sediments in the Phanerozoic accretionary complexes

为了利用日本增生复合体的数量沉积物重建海洋Os同位素的长期变化，我们推进了我们的研究计划。因此，我们成功地重建了~ 350 Ma以来海洋Os同位素的长期变化曲线。我们得到了以下结果。论文发表于《地球化学地球物理地球系统》（2005），题目为“日本晚白垩世增生杂岩金属数量的主微量元素地球化学和Os同位素组成”。此外，我们在资源地质专刊《泛海海底过程与相关成矿作用：日本增生杂岩显生宙记录（上）》上发表了3篇关于日本中部赤父带北部含金属数量和相关绿岩的地球化学及其沉积时代的论文。我们已将论文《日本第三纪增生杂岩中的数字：古海水Os同位素组成的记录》发表在地球科学研究领域的顶级期刊《地球化学与宇宙化学学报》上。此外，我们还向Nature提交了题为“27.6亿年前地下水氧化形成的赤铁矿”的论文。本文是关于re - o年代测定的。此外，我们还准备了一篇题为《白垩纪海洋Os同位素记录：来自日本和阿曼增生复合体金属含量的证据》的论文，提交给《地球与行星科学快报》。

We promoted our research program in order to reconstruct a secular variation of marine Os isotopes by using umber deposits in the Japanese accretionary complexes. Consequently, we are successful in reconstructing a secular variation curve of marine Os isotopes since 〜350 Ma. We have obtained the following results.We published the paper entitled "Major and trace element geochemistry and Os isotopic composition of metalliferous umbers from the Late Cretaceous Japanese accretionary complex" in Geochemistry Geophysics Geosystem (2005). In addition, we published three papers concerning geochemistry of metalliferous umbers and associated greenstones in the Northern Chichibu Belt, central Shikoku, Japan and their depositional age in Resource Geology Special Issue entitled "Seafloor Processes and Related Mineralization in the Panthalassa : The Phanerozoic Records from the Japanese Accretionary Complexes - Part I".We have submitted the paper entitled "Umbers in the Tertiary accretionary complex of Japan : A recorder of Os isotopic composition of ancient seawater" to Geochimica et Cosmochimica Acta that is the top journal of Earth science research field. Further, we have submitted the paper entitled "Haematite formation by oxygenated ground-water more than 2.76 billion years ago" to Nature. This paper is concerning about Re-Os dating. In addition, we prepare another paper entitled "Marine Os isotope record during the Cretaceous : Evidence from metalliferous umbers in the Japanese and Omani accretionary complexes" to be submitted to Earth and Planetary Science Letters.