Author(s): Harangi, Sz.
Title: Multivariate mathematical methods in the study of a single volcanic suite
Year: 1989
Volume: 14
Pages: 5-16.
Abstract: Application of multivariate mathematical methods proved to be effective on the petrochemical study of a volcanic suite without a priori information about the mineralogy and petrography. This paper attempts to give some guidelines to the use of a few such techniques of these mathematical methods. Classification of the main rock types can be achieved by the use of cluster analysis. Euclidean distance with raw data and cosine theta coefficient are recommended to use as a similarity measure, while among the linkage methods the weighted-pair group average proved to be most efficient. To check the clustering non-linear mapping is an excellent technique. Principal component analysis can be applied to the study of the processes affected on the chemistry of the volcanics: differentiation, subsequent alteration. Such a complex study can lead to setting up a working-hypothesis for the following investigation.Journal: Fragmenta Minerologica et PalaeontologicaJournal abbreviation: ISSN: 0367-2697Publisher: Múzsák Közművelődési Kiadó, BudapestEditor(s): Vörös, A. & Nemes, I.