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Stable Isotope Geochemistry
Studies in stable isotope geochemistry have been since its beginning a strong and
vital branch of earth sciences, but in the past decade, growth has occurred at an
ever-increasing pace as a consequence of major advances in mass spectrometry, in
micro-analytical techniques, and in calculating equilibrium isotope fractionations
using ab initio methods. In specific, the application of multicollector-ICP-mass
spectrometry now enables investigations of stable isotope compositions with adequate precisions for a wide range of transition and heavy elements that could not be
measured before. Precise ion-microprobe measurements on the micrometer scale
allow the detection of isotope heterogeneities in individual minerals. Analysis of
multiple rare isotopes of elements permit the detection and distinction of massdependent and mass-independent processes. These major advances in analytical
tools make substantial major revisions and extensions of the last edition necessary.
The structure of the book has been retained. New topics are presented that range
from the isotope composition of plants to the isotope composition of the earth’s
core. The first part gives a general introduction to the theoretical and experimental
principles. In the second part, natural isotope variations and fractionation processes
of 30 elements are discussed. By adding 25 “non-traditional” elements, including Sr
and U, this part has been substantially enlarged, although the backbone of this
chapter is still the classic elements H, C, O, N and S. Conclusions from the newly
added elements rely sometimes on a very limited data base; future studies have to
strengthen some of the inferences
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