British Abstracts: Pure chemistry and physiology. ser. A1943 |
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... minerals are , in general , more radioactive than felsic minerals . L. S. T. Radioactivity and helium content of beryllium , boron , and lithium minerals of the U.S.S.R. V. G. Chlopin and S. A. Abidov ( Compt . rend . Acad . Sci ...
... minerals are , in general , more radioactive than felsic minerals . L. S. T. Radioactivity and helium content of beryllium , boron , and lithium minerals of the U.S.S.R. V. G. Chlopin and S. A. Abidov ( Compt . rend . Acad . Sci ...
Trang 241
... minerals are reported and discussed . Variations in He indexes are due generally to loss of radiogenic He and occasionally to the presence of extraneous He . Distribution of radioactivity in rocks is not uniform ; the mafic minerals are ...
... minerals are reported and discussed . Variations in He indexes are due generally to loss of radiogenic He and occasionally to the presence of extraneous He . Distribution of radioactivity in rocks is not uniform ; the mafic minerals are ...
Trang 289
... minerals . L. S. T. Helium retention in common rock minerals . P. M. Hurley and C. Goodman ( Bull . Geol . Soc . Amer . , 1941 , 52 , 545-559 ) .— Age determinations by the He method made directly on rock samples are likely to be ...
... minerals . L. S. T. Helium retention in common rock minerals . P. M. Hurley and C. Goodman ( Bull . Geol . Soc . Amer . , 1941 , 52 , 545-559 ) .— Age determinations by the He method made directly on rock samples are likely to be ...
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absorption absorption spectra Acad acetate acid AcOH activity adsorption alkali Amer Anal analysis ation atoms boiling calc catalyst cellulose CHCI Chem chemical chloride CHPh CO₂ CO₂H coeff colour compounds Compt conc concn const containing converted corr cryst crystals curves decomp decreases derivatives described determined diazotised dioxan discussed effect electrolytes electron energy equilibrium ester ether EtOH formation formed Geol gives H₂ H₂O H₂SO heat hydrochloride hydrogen hydrolysed increases ionisation ions isomerised ketone lattice liquid measurements MeOH metal method methyl minerals mixtures NaOH obtained oxidation oxidised oxime particles phenols PhOH Physical Rev picrate polarisation polymerisation pptd pptn prep presence pressure reaction reagent reduced rend room temp salts semicarbazone solubility solution solvent spectra spectrum structure substances surface theory thermal titration vals vapour X-ray yield