翻訳と辞書 Words near each other ・ Isotopic ratio outlier analysis ・ Isotopic shift ・ Isotopic signature ・ Isotopically pure diamond ・ Isotopologue ・ Isotopomers ・ Isotopy ・ Isotopy (semiotics) ・ Isotope 217 ・ Isotope 244 ・ Isotope analysis ・ Isotope dilution ・ Isotope effect ・ Isotope electrochemistry ・ Isotope fractionation ・ Isotope geochemistry ・ Isotope hydrology ・ Isotope lists ・ Isotope lists, 0-24 ・ Isotope lists, 25-48 ・ Isotope lists, 49-72 ・ Isotope lists, 73-96 ・ Isotope lists, 97+ ・ Isotope separation ・ Isotope-coded affinity tag ・ Isotope-ratio mass spectrometry ・ Isotopes of actinium ・ Isotopes of aluminium ・ Isotopes of americium ・ Isotopes of antimony Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Isotope geochemistry ： ウィキペディア英語版 Isotope geochemistry Isotope geochemistry is an aspect of geology based upon study of the natural variations in the relative abundances of isotopes of various elements. Variations in isotopic abundance are measured by isotope ratio mass spectrometry, and can reveal information about the ages and origins of rock, air or water bodies, or processes of mixing between them. Stable isotope geochemistry is largely concerned with isotopic variations arising from mass-dependent isotope fractionation, whereas radiogenic isotope geochemistry is concerned with the products of natural radioactivity. ==Stable isotope geochemistry== For most stable isotopes, the magnitude of fractionation from kinetic and equilibrium fractionation is very small; for this reason, enrichments are typically reported in "per mil" (‰, parts per thousand). These enrichments (δ) represent the ratio of heavy isotope to light isotope in the sample over the ratio of a standard. That is, :$\backslash delta\; ^C\; =\; \backslash Biggl(\; \backslash frac\; \backslash bigr)\_\}\; \backslash bigr)\_\}\; -1\; \backslash Biggr)$ * 1000\ ^\!/\!_ 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Isotope geochemistry」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.