GEO 135 Introduction to Geochemistry Greg Druschel 321 Delehanty Hall Gregory Druschel uvm edu Course Goals At the end of this course You will be able to utilize thermodynamic to determine if individual reactions are feasible important under any given condition You will be able to design a sampling protocol analyze key chemical components apply thermodynamic or kinetic models and test hypotheses concerning the mobility of elements in any setting You will be able to appreciate both the dynamics and complexity of geochemistry yet utilize what you know to ascertain processes important in the stability movement and reactivity of elements in the earth What is Geochemistry Victor Goldschmidt defined the study of geochemistry as the laws governing the distribution of the chemical elements and their isotopes throughout the earth What does that mean We are interested in understanding the different ways in which elements move whether in the core mantle crust oceans sediments air space or other planets b Light photochemical rxns phototrophic organisms O2 diffusion FeS2 3 5 O2 H2O Fe2 2 SO42 2 H Bacteria archea Fe oxidizers S oxidizers Fe2 O2 H Fe3 OOH 2 H H SO42 HSO4CH2O FeOOH Fe2 CO2 CH2O SO42 HS CO2 Field Geochemistry Scale Where and when do you take a sample Field Notebook Need to record all observations measurements and sampling locations times Get something weatherproof Write in the rain notebooks work great
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