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Isotopes in the Earth Sciences (Paperback, Softcover reprint of the original 1st ed. 1994)
Loot Price: R8,828
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Isotopes in the Earth Sciences (Paperback, Softcover reprint of the original 1st ed. 1994)
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'The most incomprehensible thing about the world is that it is
comprehensible.' ALBERT EINSTEIN, 1950 The tremendous progress of
recent years in the field of isotopes in the earth sciences has
proved invaluable in attempting to solve a varied spectrum of
geological and geochemical problems. The lunar exploration
programmes provided rocks for analysis, stimulating refinements in
mass spectrometry which were later used for terrestrial samples
too. Among significant advances was the development of
electrostatic tandem accelerator mass spectrometers allowing the
precise measure ment of abundances of cosmic radionuclides. Also,
new geochronometers were devised, for instance those dependent upon
the radioactive decay of samarium-I47 to neodymium-I43,
lutetium-176 to hafnium-176, rhenium-I87 to osmium-I87 and
potassium-40 to calcium40, these supplementing prior dating
methods. Their impact as regards the origin of igneous rocks was
considerable. Isotopic compositions of neodymium, strontium, lead
and hafnium in these rocks showed that magmas from the mantle are
often crustally contaminated. In addition, isotopic compositions of
carbon, oxygen and sulphur aided the elucidation of aspects of
petrogenesis. These and many other facets of the subject are
discussed in this book."
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