Marine Geochemistry
نویسندگان
چکیده
منابع مشابه
Marine bivalve geochemistry and shell ultrastructure
Marine bivalve geochemistry and shell ultrastructure from modern low pH environments S. Hahn, R. Rodolfo-Metalpa, E. Griesshaber, W. W. Schmahl, D. Buhl, J. M. Hall-Spencer, C. Baggini, K. T. Fehr, and A. Immenhauser Institute of Geology, Mineralogy and Geophysics, Ruhr-University Bochum, Universitätsstraße 150, 44801 Bochum, Germany Marine Institute, Marine Biology and Ecology Research Centre,...
متن کاملGeochemistry of Marine Bivalve Shells: the potential for paleoenvironmental reconstruction
1 General Introduction 3 1. Bivalves as environmental proxies: An introduction. 5 2. Materials and Methods: Procedures, equipment, precision and accuracy. 31 3. Validation of LA-ICP-MS results with micromilling and SN-HR-ICP-MS. 59 4. Stable carbon and oxygen isotopes in an aragonitic bivalve (Saxidomus giganteus): assessing the reproducibility and reliability for environmental reconstruction. ...
متن کاملThe Marine Geochemistry of the Rare Earth Elements
Novel methods were developed for the determination of 12 of the 14 Rare Earth Elements (REE) in seawater. Initial extractions of the REE by chelating ion exchange chromatography is followed by cation exchange for removal of co-extracted U and remaining traces of major ions. Finally traces of U are removed by anion exchange before irradiation for 8 hours at a flux of 5 x 1013 neutrons.cm-2 .sec~...
متن کاملIsotope 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 کاملPhosphate rock formation and marine phosphorus geochemistry: the deep time perspective.
The role that phosphorite formation, the ultimate source rock for fertilizer phosphate reserves, plays in the marine phosphorus (P) cycle has long been debated. A shift has occurred from early models that evoked strikingly different oceanic P cycling during times of widespread phosphorite deposition to current thinking that phosphorite deposits may be lucky survivors of a series of inter-relate...
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ژورنال
عنوان ژورنال: Nature
سال: 1973
ISSN: 0028-0836,1476-4687
DOI: 10.1038/243247b0