Radiogenic Isotopes in Geologic Processes

1. Front Matter

   Pages i-xiii

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2. Theory and Experience

   • Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt

   Pages 1-9

3. Geochronometric Models

   • Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt

   Pages 11-24

4. Principle Geochronometric Isotope Systems

   • Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt

   Pages 25-42

5. Atmospheric Argon

   • Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt

   Pages 43-48

6. Distribution of Radiogenic Argon Within a Mineral

   • Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt

   Pages 49-60

7. Thermal Spectra of Argon Isotopes

   • Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt

   Pages 61-83

8. Radiogenic Argon in a Cooling Dike

   • Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt

   Pages 85-96

9. Radiogenic Isotopes in an Exocontact Zone of a Magmatic Body

   • Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt

   Pages 97-107

10. Diffusion in a Laplace Regime

    • Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt

    Pages 109-114

11. Early Earth

    • Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt

    Pages 115-127

12. Important Phanerozoic Boundaries

    • Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt

    Pages 129-148

13. Late Phanerozoic Magmatic Evolution of Asia

    • Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt

    Pages 149-207

14. Late Phanerozoic Magmatic Evolution of North America and Northeast Africa: Comparisons with Asia

    • Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt

    Pages 209-230

15. Separated Lead Isotopes

    • Sergei V. Rasskazov, Sergei B. Brandt, Ivan S. Brandt

    Pages 231-247

16. Back Matter

    Pages 249-306

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Do we actually understand geologic processes? New technology brings new inf- mation and perceptions, which sometimes overturn imaginations based on simple observation and estimation, in conjunction with common sense inference. In 1902– 1904,PierreCurieandErnestRutherford?rstformulatedtheideaofusingradioactive transformation of nuclides as a geologic chronometer. After a century of working with such tools, geology has advanced from a descriptive science to an analytic s- encethatformulatesconclusionsbasedonexactvalues.Thetechnologyofradiogenic isotope geology has created a branch of science that considers the Earth as a planet generated within a Solar system and studies the subsequent evolution of geologic processes that has resulted in the present formation of our planet’s continents and oceans. The physicist Vitaly Ginsburg, Nobel Prize laureate, wrote recently: “If Kepler had been given information on orbital parameters of planets with modern precision, he would not have been able to formulate his laws”. Indeed, after development of laws of celestial mechanics, methods of measurements became so advanced and such numerous secondary distortion effects were found that to describe an orbit of a cosmic body by a curve of the second order would appear impossible. But it does not mean that Kepler’s laws are “cancelled”; they still occupy an honorable place in courses on celestial mechanics. A reasonable division into basic and secondary phenomena is accepted and the latter are entered as variations in the basic equations.

• Geochronology
• Isotopic heterogeneity
• Ore lead isotopes
• Radiogenic isotopes
• Thermochronology
• geochemistry

• Institute of the Earth’s Crust, Siberian Branch of the Russian Academy of Sciences, Irkutsk, Russia

  Sergei V. Rasskazov, Sergei B. Brandt

• Irkutsk State University, Irkutsk, Russia

  Sergei V. Rasskazov

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