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The origin of authigenic quartz in the Helvetic Siliceous Limestone (Helvetischer Kieselkalk), Switzerland
Author(s) -
FUNK HANSPETER
Publication year - 1975
Publication title -
sedimentology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.494
H-Index - 108
eISSN - 1365-3091
pISSN - 0037-0746
DOI - 10.1111/j.1365-3091.1975.tb00296.x
Subject(s) - authigenic , geology , quartz , diagenesis , chalcedony , geochemistry , cretaceous , mineralogy , sponge spicule , paleontology
Helvetic Siliceous Limestone (Lower Cretaceous) is characterized by up to 40% of very fine (1‐10 μm), evenly distributed authigenic quartz crystals. Early diagenetic dissolution of opaline sponge spicules led to silica enrichment of interstitial waters, which reprecipitated silica in the overlying horizons, forming tiny quartz crystals in pore spaces.