Geochemical classification of terrigenous sands and shales from core or log data

Abstract A means of relating geochemical concentrations to existing sandstone classification schemes is based on three chemical parameters: the SiO 2 /Al 2 O 3 ratio, the Fe 2 O 3 /K 2 O ratio, and the Ca content. In terrigenous sands and shales, the SiO 2 /Al 2 O 3 ratio separates Si-rich quartzare... View More