A Factor Model of the Relationship between Stream Sediment Geochemistry and Adjacent Drainage Basin Lithology, Medvednica Mt., Croatia

Geologia Croatica

Lidija Galović¹  Zoran Peh¹  Josip Halamić¹  Slobodan Miko¹  Dragan Bukovec² 

[1] Croatian Geological Survey;Croatian National History Museum;

关键词: Stream sediment, Lithology, Drainage basins, Geochemical composition, Factor analysis, Medvednica Mt., Croatia;   

DOI  :  10.4154/GC.2001.04

来源: DOAJ

【 摘 要 】

A mathematical model is constructed to relate the geochemical composition of recent stream material in a number of catchments on Medvednica Mt. to a broadely defined bedrock lithology which represents the parent material for the former. It is a system based factor model, which synthesizes eight lithological and 25 geochemical variables (major, minor and trace elements), reducing their relationships to six geologically meaningful factors. Five of these divulged a definite relationship between geochemistry and lithology. These are labelled as follows: factor of metamorphic rocks; factor of igneous rocks; factor of Tertiary carbonate rocks; factor of parametamorphic rocks and factor of Mesozoic carbonate rocks. Two lithologies; the Mesozoic clastic rocks and Quaternary sediments showed no clear association to any of the factors. Alternatively, one of the factors (F2) can be identified as “non-lithologic” indicating other, perhaps anthropogenic, contributions to the stream sediment geochemical composition.

【 授权许可】

Unknown