Chemical composition of DSDP cherts and associated host sediments, supplement to: Murray, Richard W; Buchholtz ten Brink, Marilyn R; Gerlach, David C; Russ, III, Price G; Jones, David L (1992): Rare earth, major, and trace element composition of Monterey and DSDP chert and associated host sediment: Assessing the influence of chemical fractionation during diagenesis. Geochimica et Cosmochimica Acta, 56(7), 2657-2671

Richard W Murray, Marilyn R Buchholtz ten Brink, David C Gerlach, Price G Russ, III & David L Jones
Chert and associated host sediments from Monterey Formation and Deep Sea Drilling Project (DSDP) sequences were analyzed in order to assess chemical behavior during diagenesis of biogenic sediments. The primary compositional contrast between chert and host sediment is a greater absolute SiO2 concentration in chert, often with final SiO2 >=98 wt%. This contrast in SiO2 (and Si/Al) potentially reflects precursor sediment heterogeneity, diagenetic chemical fractionation, or both. SiO2 concentrations and Si/Al ratios in chert are...
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