{ "culture": "de-DE", "name": "geochemie_bachsedimente_elemente", "guid": "44B02A95-F3B9-4ABA-84A9-E160D9D28A22", "catalogPath": "", "snippet": "Geochemie der Bachsedimente: Haupt- und Spurenelemente", "description": "The chemical content of a stream sediment sample reflects the element contents of the rock types occurring in the sample's catchment area, provided that the entire catchment area served equally as a source of erosion when the stream sediment was formed. In the absence of natural mineralization and anthropogenic enrichment, geochemical analysis data from active sediments of natural streams can therefore serve as a proxy for rock geochemical analysis.