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单词 authigenic
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authigenic

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Examples of 'authigenic' in a sentence
authigenic

Subsequently, sediments and authigenic carbonates from methane-influenced marine environments were analysed.The relationship between methane leakage flux and authigenic minerals was also discussed.During evaporitic condition, authigenic minerals precipitated: carbonates, sulfates (anhydrite, gypsum and polyhalite) and halite (predominant).They are most probably derived from pre-existing authigenic phosphorites.The authigenic clay mineral fills in the pores.In contrast, the formation of pore-filling authigenic illite and illite/smectite clays reduced its permeability.It promotes the formation of authigenic microcrystalline quartz and improves the brittleness of shale.The clay minerals are of authigenic and detrital origins.Specimens are composed of authigenic calcite and pyrite crystals about 5–10 µm in length.
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