Genetic implications of geochemical factor analysis in a sediment-hosted Cu-Pb-Ba mineralization

Autor: W. Kollenberg, J. H. Vogt
Rok vydání: 1987
Předmět:
Zdroj: Mineralium Deposita. 22
ISSN: 1432-1866
0026-4598
DOI: 10.1007/bf00204693
Popis: Factor analysis has been applied to geochemical data obtained from Abra, a sediment-hosted Cu-Pb-Ba mineralization in the Late Proterozoic (1,100 Ma) Bange-mall Basin in Western Australia. From some 5,000 m of drill core 57 samples have been analyzed for 26 elements by ICP/AAS. Statistical analysis was performed on 19 elements (W, Zn, P, Pb, Co, Ni, Ba, Fe, Mn, Mg, V, Al, Ca, Cu, Ti, Sr, Na, K, Si). The data have been treated first by statistical standard methods, not considered here, then by representative graphic display of the spatial distributions of elements in a section through the mineralization, and finally by factor analysis. Three groups of elements can be distinguished according to their mode of spatial distribution in section, i.e., strata-bound, discordant, and equivocal. Eight factors have been found to explain 90% of the total variability, and the spatial distribution of these factors is discussed with respect to their geological plausibility.
Databáze: OpenAIRE
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