《地球化学》第四章 微量元素地球化学（闭向阳 张利）.ppt

* * N * N * N * * N * * * * Y * Y * Y * Y * Y * Y * * Y * * * Y * N * * * Y * * N * * * * * * * * * * * * * * * * * * * N 33’ * * * * * * * * * * * * * * Y * * N * Y * * * * * Y * * * * * N * * * Y * * * * * * * * * * * * * * * * * * * N * N * * * * * * * * * 6. 对沉积岩进行分类 文献来源： Pettijohn, F.J., Potter, P.E. and Siever, R. (1972): Sand and Sandstone; Springer-Verlag, 618 pages Graywacke Quartz arenite Litharenite Arkose Subarkose Sublitharenite Arenite: 砂岩 文献来源： Herron, M. M., 1986. Geochemical classification of terrigenous sands and shales from core or log data. Journal of Sedimentary Petrology, 58: 820-829. 岩屑砂岩 长石砂岩 克拉通盆地 陆内裂谷或弧后盆地 大陆边缘弧 大洋弧 应用主量元素对沉积碎屑岩形成构造背景进行判别 文献来源：Condie, K.C., 1989. Plate Tectonics and Crustal Evolution. Pergamon Press, New York, 1989, 310 pp. 7. 对沉积岩或沉积物的形成构造背景进行判别 Shallower EPR BM TM Deeper Southwest Pacific Basin sediment Hydrothermal sediment 文献来源： Meylan, M.A., Glasby, G.P., Knedler, K.E., and Johnston, J.H., 1981. Metalliferous deep-sea sediments. In Wolf, K.H. (Ed.), Handbook of Strata-Bound and Stratiform Ore Deposits (Vol. 9): Amsterdam (Elsevier), 77–178. BM = biogenic matter end-member sediment composition, EPR = East Pacific Rise hydrothermal end-member sediment composition, TM= terrigenous matter end-member sediment composition 应用Al/(Al+Fe+Mn) vs. Fe/Ti图解对现代海洋沉积物的成因(源区)进行判别(Meylan et al., 1981)。可应用于沉积地层中硅质岩、金属结核等的成因研究. EPR: axial zone and crest flank metalliferous sediments, Germain-Fournier (1986) 文献来源： Bonatti, E., Kraemer, T., and Rydell, H., 1972. Classification and genesis of submarine iron-manganese deposits. In Horn, D.R. (Ed.), Papers from a Conference on Ferromanganese Deposits on the Ocean Floor: Washington (Natl. Sci. Found.), 149–166. 大洋Fe-Mn氧化物沉积物成因的Fe-Mn-(Ni+Co+Cu)?10判别图 Hydrogeneous Nodules Hydrothermal Materials Fe-Mn Crust EPR SP (Ni+Co+Cu)?10 SP: South Pacific siliceous and red clays, Karpoff et al. (1988). Fe-Mn crusts, Toth (1980) 微量元素概念 能斯特分配定律与分配系数 总分配系数概念 元素在共存相中分配系数