Geochemistry of Sediments: A Brief Survey |
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Page 99
... concentration in the atmosphere is about 0.03 Vol . % ( Keeling , 1958 ) , the CO2 content in the soil gases is generally on the order of 0.5 to 5 Vol . % in humid regions ; but concentrations between 10 and 15 Vol . % are also known ...
... concentration in the atmosphere is about 0.03 Vol . % ( Keeling , 1958 ) , the CO2 content in the soil gases is generally on the order of 0.5 to 5 Vol . % in humid regions ; but concentrations between 10 and 15 Vol . % are also known ...
Page 192
... concentration of hydrocarbons and the subse- quent formation of oil droplets and crude oils may be reasonably explained ( p . 298 ) . 4. ISOTOPIC COMPOSITION OF NATURAL WATERS The variation of the isotopic composition of natural waters ...
... concentration of hydrocarbons and the subse- quent formation of oil droplets and crude oils may be reasonably explained ( p . 298 ) . 4. ISOTOPIC COMPOSITION OF NATURAL WATERS The variation of the isotopic composition of natural waters ...
Page 217
... concentration sharply decreases with depth of burial ( Fig . 48 ) . Amino acids biogenically produced at or near the water - sediment interface gradually decrease relative to the amino acids formerly contributed by the sea . By taking ...
... concentration sharply decreases with depth of burial ( Fig . 48 ) . Amino acids biogenically produced at or near the water - sediment interface gradually decrease relative to the amino acids formerly contributed by the sea . By taking ...
Common terms and phrases
Abelson Acta Amer amino acids amorphous silica analcite ancient sediments anhydrite apatite aragonite aromatic Assoc atmosphere authigenic Basin bauxites biochemical biogenic biological boehmite Bull CaCO3 calcite calcium carbohydrates carbon isotope cations cent chemical chemistry Chilingar chlorite clay minerals Clays and Clay CO₂ coal composition compounds concentration connate waters constituents Cosmochim crude oil Degens deposits detrital diagenesis diagenetic dolomite Econ environments Epstein evaporite fatty acids feldspars formation fossil fraction fresh water Garrels Geochemistry Geochim Geol geological gibbsite glauconite groups halloysite humic acids hydrocarbons hydrogen hydroxides illite inorganic ions iron kaolinite kerogen layers lignins limestones Lowenstam magnesium manganese marine sediments ments meters microbial molecules montmorillonite natural waters ocean water organic matter origin oxides Petrol petroleum phosphate precipitation present proteins pyrite quartz ratio recent sediments salinity sea water sedi sediments shales silica Soil solubility solution species stable structural studies sugars sulfate sulfides sulfur temperature tion