SubjectsSubjects(version: 901)
Course, academic year 2022/2023
  
Isotope Geochemistry - Geochronology - MG440P23
Title: Izotopová geochemie - geochronologie
Czech title: Izotopová geochemie - geochronologie
Guaranteed by: Institute of Petrology and Structural Geology (31-440)
Faculty: Faculty of Science
Actual: from 2021
Semester: winter
E-Credits: 5
Examination process: winter s.:
Hours per week, examination: winter s.:2/1 C+Ex [hours/week]
Capacity: unlimited
Min. number of students: 3
Virtual mobility / capacity: no
State of the course: taught
Language: Czech, English
Note: enabled for web enrollment
Guarantor: prof. Mgr. Vojtěch Janoušek, Ph.D.
Teacher(s): prof. Mgr. Vojtěch Janoušek, Ph.D.
Mgr. Tomáš Magna, Dr. rer. nat.
Opinion survey results   Examination dates   Schedule   
Annotation -
Last update: prof. Mgr. Vojtěch Janoušek, Ph.D. (25.09.2020)
This course presents fundamentals of radiogenic isotope geochemistry and geochronology at master level. This includes principal analytical procedures used in the isotope geochemistry/geochronology.
Literature -
Last update: prof. Mgr. Vojtěch Janoušek, Ph.D. (07.10.2021)

Course materials are available online (in Google Classroom). 

 

Allégre CJ (2008) Isotope Geology. Cambridge University Press,  pp 1-512

Dickin AP (2005) Radiogenic Isotope Geology. 2 Cambridge University Press, Cambridge, pp 1-495

Faure G (1986) Principles of Isotope Geology. 2 John Wiley & Sons, Chichester, pp 1-589

Faure G, Mensing TM (2004) Isotopes: Principles and Applications. Wiley, New Jersey, pp 1-928

Geyh MA, Schleicher H (1990) Absolute Age Determination. 1 Springer-Verlag, Berlin, pp 1-503

Janoušek V, Moyen JF, Martin H, Erban V, Farrow C (2016) Geochemical Modelling of Igneous Processes - Principles and Recipes in R Language. Bringing the Power of R to a Geochemical Community. Springer-Verlag, Berlin, Heidelberg, pp 1-346

Košler J, Jelínek E, Pačesová M (1997) Základy izotopové geologie a geochronologie - radiogenní izotopy. Karolinum, Praha, pp 1-114

Rollinson HR (1993) Using Geochemical Data: Evaluation, Presentation, Interpretation. 1 Longman, London, pp 1-352

Wilson M (1989) Igneous Petrogenesis. Unwin Hyman, London, pp 1-466

Winter JD (2001) An Introduction to Igneous and Metamorphic Geology. Prentice Hall, Upper Saddle River, NJ, pp 1-699

Requirements to the exam -
Last update: prof. Mgr. Vojtěch Janoušek, Ph.D. (25.09.2020)

The prerequisite for exam is submission of solved exercises. The exam is in the form of test, or oral.

Syllabus -
Last update: prof. Mgr. Vojtěch Janoušek, Ph.D. (25.09.2020)

1.        Introduction (TM)

  • Timescales of geological processes
  • Physico-chemical fundamentals of the isotope geochemistry and geochronology
  • Stability of atoms, mechanisms of radioactive decay
  • Nucleosynthesis and short history of the Universe

2.        Chemical and instrumental methods (TM) 

  • Sample decompositions, chemical separations using ion-exchange columns
  • Mass spectrometry (TIMS and ICP-MS)
  • In-situ analysis (laser ablation)
  • Isotope dilution, mass fractionation

3.        Statistical treatment and interpretation of analytical data (VJ) 

  • Statistical evaluation of analytical data
  • Sources of errors, accuracy and precision
  • Measures of location and dispersion
  • Graphical presentation of data in isotope geochemistry
  • Error propagation law

4.        Principles of geochronology (VJ) 

  • Calculating age and initial ratio
  • Isochron method and its alternatives
  • Epsilon notation, Nd and Hf model ages
  • U–Pb system for dating of accessory phases

5.        Isotope geochemistry and geochronology of igneous rocks (VJ) 

  • Timing intrusion and cooling of igneous rocks (K–Ar, Ar–Ar, Lu–Hf, Re–Os, Rb–Sr and Sm–Nd methods)
  • Using radiogenic isotopes in studying petrogenesis of igneous rocks  – radiogenic isotopes of Sr, Nd, Hf, Pb, Os in the Earth’s mantle,  oceanic and continental crust
  • Processes influencing isotopic composition of the magma, closed and open system, binary mixing,  assimilation and fractional crystallization (AFC)
  • Petrogenesis of igneous rocks in variable geotectonic setting
  • Classification and origin of granites

6.        Isotope geochemistry and geochronology of metamorphic and hydrothermal processes (TM) 

  • Extinct radionuclides and their applications
  • Cosmogenic nuclides  and their applications
  • LA-ICP MS dating of magmatic, metamorphic and detritic zircons
  • Fission-track method
  • Diffusion, concept of closure temperature, dating metamorphic minerals
 
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