Wara, Michael W; Ravelo, Ana Christina (2006): Element ratios and stable isotopes of foraminifers from ODP Site 202-1237. PANGAEA, https://doi.org/10.1594/PANGAEA.774197, Supplement to: Wara, MW; Ravelo, AC (2006): Data report: Mg/Ca, Sr/Ca, Mn/Ca, and oxygen and car...
In this paper the geochemical characteristics of magma source are obtained from the data of H,O,Sr and Nd stable isotopes, and the trace elements of the late Yanshan igneous rocks in the coastal area of eastern Zhejiang Provonce. It is suggested that the intrusive-volcanic tocks in the ar...
Tracing magma mixing and crystal-melt segregation in the genesis of syenite with mafic enclaves:Evidence from in situ zircon Hf-O and apatite Sr-Nd isotopes. Lithos 334-335, 42-57. https://doi.org/10.1016/j.lithos.2019.03.011 [96] Sun, J.F., Yang, J.H., Zhang, J.H., Yang, ...
Pure silicon is too reactive to be found in nature, but it is found in practically allrocksas well as insand,clays, andsoils, combined either with oxygen as silica (SiO2, silicon dioxide) or with oxygen and other elements (e.g.,aluminum,magnesium,calcium,sodium, potassium, or iron) assi...
fusion with an alkaline oxidizingflux, such assodiumperoxide (Na2O2), especially if an oxidizing agent such as sodium chlorate is present. The green melt contains the perruthenate ion, RuO-4; on dissolving in water, an orange solution containing the stable ruthenate ion, RuO42-, usually ...
We calculated the composition of possible metasomatic agents in equilibrium with the garnets using partition coeficents for carbonatitic, silicic and hydrous-silicic melts. Diamond-forming fluids show some similaries to the calculated metasomatic agents (positive Pb anomaly and negative Zr, Ti and ...
Owing to the extreme differences in the concentrations of oxygen and carbon in diagenetic fluids, carbonate minerals equilibrate with fluid δ 18O values at three orders of magnitude lower water:rock ratios (<10) than the water:rock ratios at which they equilibrate with fluid δ 13C values ( ...
PGEs, consist of Osmium (Os), Iridium (Ir), Ruthenium (Ru), Rhodium (Rh), Platinum (Pt), and Palladium (Pd). They are transition precious metallic elements with similar physical and chemical properties grouped together in the D-block in Groups 8, 9, and 10; and Periods 5, 6, and ...
These results highlight the persistence of PTE contamination in the historical mining site and the usefulness of Pb isotopes combined with multivariate statistical analysis to quantify contamination from mining activities. Keywords: miyun reservoir; pollution assessment; binary mixing model; source ...
Habitability criteria can only be said to be consistent with multiverse expectations if all probabilities are close to 1. Only by assuming that the C/O ratio lies within a narrow range do all probabilities exceed 10%10%. Taking the extreme stance that systems with Mg/Si < 1 are ...