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

Abstract

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.

Provenance of Cretaceous synorogenic sediments from the NW Dinarides (Croatia)

“…Position of the study area is marked by the rectangle 2002). Radiolarian biostratigraphy on the blocks and palynomorph studies on the matrix of the me ´lange suggest that, in this area, oceanic subduction started in the Middle Jurassic and ended around the Late Jurassic/Early Cretaceous (Halamic ´and Goric ˇan 1995;Halamic ´et al 1999;Babic ´et al 2002). These age data are in good agreement with independent data from several Dinaride localities on high-temperature geochronology of metamorphic soles (189-161 Ma) and on biostratigraphic dating of shallow-marine carbonates onlapping the obducted ophiolites (see Mikes et al 2009 for a review).…”

Correlation of metals and degraded marine (micro)plastic litter in geologically similar coastal areas with different anthropogenic characteristics

“…More details about all used statistical analyses can be found in Davis (2002) and Halamić et al (2001).…”

Chemical assessment and spatial distribution of selected elements in aquatic sediments in the region of Peja (Kosovo)

“…Studies on metals in rivers, lakes, fish, and sediments have been a major environmental focus in the last decades. Sediments (silt and clay) containing ecotoxic heavy metals and other inorganic and organic substances are important for studying water pollution, and therefore, their multidisciplinary research is essential for understanding different processes and to understand better the geochemical cycles of different trace elements [3].…”