攀西地区基性-超基性岩地球化学及嵌套韵律层的分形动力学研究  

FRACTAL STUDY ON NESTED RHYTHMIC LAYERING STRUCTURE AND GEOCHEMISTRY IN BASIC-EXTRA-BASIC PLUTONS IN PANXIDISTRICT

作　　者：岑况[1] 钟玉芳[2] 

机构地区：[1]中国地质大学地球科学与资源学院,北京100083 [2]中国地质大学地球科学学院,武汉430074

出　　处：《现代地质》1999年第4期408-414,共7页Geoscience

基　　金：受国家自然科学基金重点项目!(项目号 :496 3 3 12 0 );国家攀登项目!( 95 -预 -3 9)资助

摘　　要：攀西地区层状基性 -超基性岩体从下到上具有套叠式韵律结构的特征 ,这种韵律由岩石的颜色、矿物的成分、结构等表征。在长期的地球重力作用下 ,物质的液态分异或固相结晶分异为层状岩体韵律成因的关键。提出用类似于 Cantor分形集合法构筑重力分异时空分形集合 ,结果以色谱条带图和直方图表达 ,并与攀枝花层状岩体的野外岩石观察的颜色韵律以及岩体实测的矿物成分、长石的 An号码进行了对比 ,表明岩体实测数据与构筑的重力分异时空分形理论图式很相似 ,揭示了攀西层状基性There is nested rhythmic layering structures in basic- extra- basic plutons in Panxi district.The nested rhythmic layering structure consists of rock color,mineral component and structure.A key factor for the forming of the nested rhythmic layering structure is liquid or crystallization differentiation of magma in the earth's gravitation.A fractal set on gravitation is set up.The gravitational fractal set is similar to Cantor fractal set.The resultsare shown in chromatogram diagram and curve diagram and contrasted with the nested rhythmic layering structures observed in the field work.The results show that the measured data of the pluton and the gravitational fractal is very similar.It indicates the features of temporal- spatial fractal in gravitational differentiation processes of the formation of nested rhythmic layering structures in layering basic- extra- basic plutons in Panxi district.

关 键 词：基性-超基性岩 嵌套韵律结构 动力学 地球化学 

分 类 号：P588.124[天文地球—岩石学] P588.125[天文地球—地质学]