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Chemical composition in phosphate materials from the ocean floor
Content, distribution patterns, and speciation of Cl in phosphorites and bone phosphate from the ocean floor, as well as in a set of samples from the land are studied. Total Cl... -
Composition of phosphate containing sediments and phosphatic grains from the ...
Recent phosphatic grains from diatomaceous oozes, as well as Pliocene grains from phosphatic sands of the Namibian shelf were studied by a scanning electron microscopy coupled... -
Composition of rocks and minerals from the transition zone of the Reykjanes R...
Investigations of petrography, mineralogy, and chemical composition of gases and fluids in tuffs and lavas were carried out on samples dredged in the transition zone from the... -
Mineral composition of 0.1-0.05 mm grain size fraction from the surface layer...
Rock material sampled from the Mir manned deep-sea submersibles and by dradges, grabs, and sediment cores over a vast area of the North Atlantic was analyzed to show that this... -
Contents of P2O5, Corg, Sr, and Ba in phosphorites and host sediments from th...
Sr contents in phosphorites on shelves of the Southwest Africa, and of Chile and Peru increase with degree of their lithification, from 0.05 to 0.28% and from 0.13 to 0.16%... -
Chemical composition of phosphorites and host sediments
Paleotemperature curves were drawn from oxygen-isotope ratios in CaCO3 of planktonic foraminiferal tests and by the micropaleontological method using quantitative relationships...