Inorganic geochemistry data from Lake El'gygytgyn sediments: marine isotope stages 6–11
نویسندگان
چکیده
منابع مشابه
Isotope Geochemistry
Isotopic analysis can be performed on minerals, rocks, soil, tissue, gases, and liquids – just about anything. In view of the broad possibilities, we will only cover a few generalities here. In most instances, the element to be analyzed must be first isolated and purified before it can undergo isotopic analysis in a mass spectrometer. Purification is necessary to avoid isobaric interferences an...
متن کاملInorganic geochemistry of El’gygytgyn Lake sediments (northeastern Russia) as an indicator of paleoclimatic change for the last 250 kyr
The inorganic geochemistry of sediments from El’gygytgyn Lake shift in phase with interpreted paleoclimatic fluctuations seen in the record over the past 250 ka. Warm periods, when the lake was seasonally ice free and fully mixed, are characterized by increased concentrations of SiO2, CaO, Na2O, K2O, and Rb, by decreased contents of TiO2, Fe2O3, Al2O3, and MgO, and by a lower chemical index of ...
متن کاملSeasonal variations in pore water and sediment geochemistry of littoral lake sediments (Asylum Lake, MI, USA)
BACKGROUND Seasonal changes in pore water and sediment redox geochemistry have been observed in many near-surface sediments. Such changes have the potential to strongly influence trace metal distribution and thus create seasonal fluctuations in metal mobility and bioavailability. RESULTS Seasonal trends in pore water and sediment geochemistry are assessed in the upper 50 cm of littoral kettle...
متن کاملStable Isotope Geochemistry
1. Background 2. Elements, Nuclides, and Stable Isotopes 3. The Mass Spectrometer and Isotope Ratio Measurement 4. Isotope Fractionation 5. Temperature and Fractionation 6. Stable Isotopes in the Hydrologic Cycle 7. O in Minerals and Rocks 8. C and Carbon Cycling 9. N Cycling in Watersheds 10.S and the Sulfur Cycle 11. Chlorine and Bromine Isotopes 12. Light Lithophile Elements: δLi and δB Glos...
متن کاملOrganic geochemistry of recent marine sediments from the Nansha Sea, China
Recent marine sediments from two cores, collected on the continental slope of the Nansha Sea, China, have been analyzed for organic matter content, n-alkane and isoprenoid hydrocarbons, fatty acids, n-alkanols and sterols. The organic carbon contents of the two sediment cores average 0.7 and 0.53%, respectively, and are higher than those of other sedimentary environments in this region. The dis...
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ژورنال
عنوان ژورنال: Climate of the Past
سال: 2014
ISSN: 1814-9332
DOI: 10.5194/cp-10-467-2014