摘要
岩石的化学成分研究是鉴定岩石、确定岩石类别、恢复原岩、讨论岩石形成条件、对比岩石特征等的重要方法之一。在岩石学计算方法中,列文生——列信格(1897)、奥森(1899)、尼格里(1923)、查瓦里茨基(1935)、库兹涅佐夫(1947)等做出了重要的贡献。尽管他们的一些方法用电子计算机时代的今天的认识水平去观察,显得那样简陋和落后,但仍未失其应用价值。然而,以往的任何一种方法,都是单元分析方法,而且计算上受到工具的限制,不可能处理大量数据。有时人为的把各种变量归并,致使许多有价值的原始信息,就只因其不适合预想的分类而被略去,这种以定性的与经验的理论为特征的方法,已经为很多学者质疑和批评,并且人们在不断寻求岩石化学的定量计算的各种途径。
Computation used in traditional rock chemeistry is qualitative and empirical in nature. The variables are incorporated arbitrarily in computation, thus a lot of valuable original information is concealed.For a long time, people have sought unceasingly a way of quantitative computation rock chemeistry. This desire may come true, because nowadays the means of determination have been greatly improved and electronic computer has come into common use . In this paper the author useing the method of discriminatory analysis recalculated 153 rock Chemistry total analysis of world wide representation. The resalts were classified and allotted into 8 type of rocks each written in a corresponding algebraic equation, as following.1. ULTRABASIC ROCKSY1 = 11.714SiO2-13.753TiO2 + 11.171Al2O3 + 7.932Fe2O3+9.552FeO + 19.052MgO + 16.777CaO + 70.719MnO+19.16lNa2O + 15.552K2O-724.0062. BASIC ROCKSY2 = 10.38lSiO2 -2.823TiO2 + 10.317Al2Os +6.836Fe2O3 + 8.063FeO + 14.775MgO+ 14.627CaO + 62.246MnO + 16.635Na2O + 13.246K2O - 531.674 3 . NEUTRAL ROCKSY3=10.26SiO2-2.956TiO2+10.466Al2O3+7.073Fe2O3+6.977FeO+14.547MgO+ 14.519CaO + 62.309MnO + 16.445Na2O + 13.419K2O - 519.609 4. RHYOLITE (ACIDIC ROCKS) Y4 = 10.434SiO2 - 1.36lTiO2 + 10.194Al2O3 + 6.351Fe2O3 + 6.881FeO + 14.536MgO+ 14.506CaO + 72.557MnO+16.37lNa2O + 14.606K4O-529.834 5. ALKALINE FOCKS Y6 = 10.431SiO2 + 1.20lTiO2 + 10.2606Al2O3 + 6.946Fe2O3 + 6.953FeO + 14.77MgO+ 14.794CaO + 68.919MnO + 16.698Na2O + 15.039K2O - 539.9836. SEDIMENTORY ARENACEOUS ROCKSY6 = 10.286SiO2 + 0.008TiO2 + 9.704A12O3 + 6.342Fe2O3 + 6.977FeO + 14.184MgO + 14.137CaO + 62.776MnO+15.948Na2O+13.472K2O-507.3027. CLAYEY ROCKSY7 = 9.557SiO2-1.939TiO2+9.853Al2O3 + 6.726Fe2O3+6.431FeO + 13.404MgO + 13.30lCaO + 57.621MnO + 14.79Na2O + 12.855K2O - 451.4538. CARBONATE ROCKSY8 = 7.863SiO2 - 8.867TiO2 + 7.822A12O3 + 4.668Fe2O3 + 5.094FeO + 12.389MgO+ 12.993CaO + 64.068MnO + 13.69lNa2O + 12.685K2O - 350.851The discriminatory equation can quantitative classity rocks and resnme original rocks. We find Yi(i=1…8)by replacing va
出处
《吉林大学学报（地球科学版）》
EI
CAS
1982年第3期91-94,共4页
Journal of Jilin University：Earth Science Edition
