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Lacustrine chalky carbonates: origin, physical properties and diagenesis (Palaeogene of the Madrid Basin, Spain)
Chalky carbonates Lacustrine deposits Physical properties Overpressure Palygorskite Palaeogene
2011/11/8
The Palaeogene lacustrine chalky carbonates of the Madrid Basin are a peculiar type of very soft and friable carbonate facies with high porosity despite being covered by more than 800 m of sediment. S...
Dolomitization and silicification in low-energy lacustrine carbonates (Paleogene, Madrid Basin, Spain)
Shallow lacustrine carbonates Chalks Dolomitization Cherts Paleogene Madrid Basin
2011/11/14
Repetitive sequences of carbonate deposits, occurrence include in the lower part of the Paleogene Carbonate Unit (northeast border of the Madrid Basin), have been studied, defining regressive lacustri...
Effects of Mg-Fe2+ substitution in calcite-structure carbonates: Thermoelastic properties
Mg-Fe2+ substitution calcite-structure carbonates Thermoelastic properties
2012/3/31
In situ X-ray diffraction has been carried out on two siderite samples of different Fe contents simultaneously at high pressure and high temperature in a DIA-type, large-volume apparatus. Unit-cell vo...
Thermochemistry of double carbonates in the K2CO3-CaCO3 system
Thermochemistry double carbonates K2CO3-CaCO3 system
2012/4/5
Enthalpiesofformation,H,ofthedoublecarbonatesK Ca(CO ) (withtwopoly-morphs,bu!§tschliiteandfairchildite)andCa (CO ) fromthecomponentsK CO andCaCO
weredeterminedat298Kbydropsolutioncalorimetryinmolten...
The Influence of Aluminum on Iron Oxides. VI. The Formation of Fe(II)-Al(III) Hydroxy-Chlorides, -Sulfates, and -Carbonates as New Members of the Pyroaurite Group and Their Significance in Soils
Fe-Al hydroxycarbonate Fe-Al hydroxychloride Fe-Al hydroxysulfate Green rust Iron oxide Pyroaurite
2012/2/9
In the absence of oxygen, Fe(II) chloride, sulfate, and carbonate solutions react at pH 6.5 to 7 with aluminum hydroxide suspensions to form new Fe(II)-Al(III) hydroxy anion compounds of the pyroaurit...