Application of P-A Fractal Model for Characterizing Distributions of Pyrrhotites in Seven Layers of Basalts in Gejiu District, Yunnan, China

• 责任者：Li Zenghua (North China Geological Exploration Bureau ; Tianjin 300181 ; China) ; Cheng Qiumin
• 刊名：Earth Science
• 出版年：2009
• 卷期：34（2）
• 关键词：分形分析 ; fractal analysis ; 磁黄铁矿 ; pyrrhotite ; 玄武岩 ; basalts ; 云南 ; Yunnan Province
• 页码：p.275-280
• 图表：2 illus., 3 tables, 15 refs.
• 分类号：1900
• issnNo：ISSN1000-2383
• isbnNo：CN42-1233/P

The study on micro-pores of soils, pore-fracture-holes of sedimentary rocks and microstructures of minerals at different scales has attracted more and more attention. Typical fractal models, including P-A and box-counting methods, have also been used for such kind of studies. The results show that, from the first-section basalt to the seventh-section basalt, with the depth of rock body increasing, the values of D(A) and De change a little, but the value of Dea shows an increasing trend. This indicates that the shapes of pyrrhotites become more and more irregular as the depth increases, probably due to the increase of temperature and pressure.