单词	silicify
释义	silicify /sɪˈlɪsɪfʌɪ / verb (silicifies, silicifying, silicified) [with object] Convert into or impregnate with silica: the calcareous skeleton has been silicified... Later, authigenic quartz was precipitated and carbonate phases were partly silicified. Silica cells were silicified in the first year, and the frequency was not significantly different among the three leaf ages. For most large deposits of agate or silicified wood, silica was derived from the decomposition of volcanic rocks. Derivatives silicification /sɪlɪsɪfɪˈkeɪʃ(ə)n/ noun ... The formation of botryoidal aragonite and clotted micrite was followed by silicification of carbonate phases and precipitation of authigenic quartz. It is probable that the original composition was calcium phosphate, and some secondary silicification has taken place. The taxonomic fidelity of silicified microbes will depend on the rate of silicification and the factors that control that process.
随便看	chief master sergeant chief of staff chief of state chief petty officer chief police officer chief rabbi chieftain chieftaincy chieftainship chief technician chief warrant officer chiffchaff chiffon chiffonade chiffonaded chiffonier chifforobe Chifley, Joseph Benedict chigger chignon chigoe Chihli, Gulf of chihuahua chikan chiko roll

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