Ce-enrichment up to 0.17% has been recorded in the present study as against ~ 0.1% content in global seamount Fe-Mn crusts. This enrichment is attributed to oxidative removal of Ce from seawater to the marine Fe-Mn crust. The negative Ce-anomalies obtained for seawater samples from the ANS...
crustterrestrial heatgeothermalradioactivityradiogenic heatFrancegeochemical enrichmentmid-European Variscan chainHeat production has been calculated from U, Th and K content measurements on selected rock from the Armorican Massif (western France). Geographical, geochemical and age criteria have been ...
Crust formation is a common phenomenon in planktonic foraminifera. Because of their different formation mechanism and hence composition, crusts affect the overall test composition and therefore complicate the use of crust-bearing foraminifera in paleoceanography. Such species are often u...
Siderophile trace elements in the Earth's oceanic crust and upper mantle , D. M. Shaw , and J. H. Crocket ( 1983 ), Siderophile trace elements in the Earth's oceanic crust and upper mantle , J. Geophys. Res. , ... Chen‐Lin Chou,DM Shaw,JH Crocket - 《Journal of Geophysical Res...
Table 1.Content of different elements in inanimate and living matter Empty CellContent (% per weight) Chemical elementsSolar matterAtmosphereOceanEarth’s crustSoilPlantsAnimals Hydrogen (H)7210.71.63.110.011.0 Helium (He)27 Oxygen (O)0.2820.9785.856.266.870.065.0 ...
The elementome—the full spectrum of elemental content—of urinary calculi is emerging as a new concept in stone research. Here, Ramaswamy et al. summarize current knowledge of the elementome of calcium-based urinary calculi and highlight study results o
6) content of iron element 铁元素丰度 1. A correlation betweencontent of iron elementand organic carbon in the source rocks, Late Permian to Early Triassic in the Shiwandashan Basin,South China; 十万大山盆地晚二叠世、早三叠世烃源岩中铁元素丰度与有机碳丰度相关关系 ...
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In the earth’s crust it migrates in magma, as well as in hot and cold waters. It accumulates primarily in the upper mantle during magmatic differentiation; its average content in hyperbasic rocks is 2 × 10-2 percent. The formation of “liquation” deposits of cobalt ore is related to ...
Sign in to download hi-res image Fig. 1. Cerium element requirements by application. (Percentages are estimates of the total REE content required in a given application) (Long et al., 2012). Radioactive wastes are hazardous for human health and the environment, and therefore have attracted a...