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The course gives an Introduction to the principles of chemical geodynamics. You will learn the skills needed for research in a multidisciplinary context. You will independently solve problems with geochemical data supported by information obtained by reading relevant scientific literature. You will learn to recognize a variety of igneous rocks and rock textures by optical microscopy.
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Petrology, mineralogy and chemical evolution of the Earth’s mantle and crust
The Earth’s crust and mantle have evolved both physically and chemically through geological time. This course will explore how chemical and isotopic tracers can be used to determine the composition, mineral content and evolution of the crust-mantle system. Focus will be given to radiogenic isotopes and trace elements in magmatic systems. Key issues include: How are the crust and the mantle chemically distinct? What are the differences between continental and oceanic crustal and mantle reservoirs? How have these reservoirs evolved through geological time? How can geochemical data support or disprove plate tectonic models? Which types of magmatic rock give the most useful information about tectonic processes and how do we recognize this?
The block is made up of theoretical and applied components:
- Isotope geology, geochronology and high-temperature geochemistry
- use of isotopes to date rocks and determine their origin
- theory behind radioactive decay and production of radiogenic isotopes
- Introduction to Rb-Sr, Sm-Nd, U-Pb, Lu-Hf and Re-Os isotope systems
- Advantages and disadvantages of using different tracers
- Chemical evolution of the solid earth
- Development of the crust and mantle through geological history
- Continental crust growth rate
- Evolution of the sub-continental lithospheric mantle
Activities include a short written report and a presentation during a symposium at the end of the block by each participant. A practical exam will test knowledge on thin-section petrography.
Work packages followed in this course will help to develop transferable skills. Exercises during the practical classes will aid development of analytical and quantitative skills and help to improve problem-solving. Written and verbal communication skills will be developed during the presentation and writing of the report in connection with the individual project
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