Geochemistry

Year
3
Academic year
2019-2020
Code
01003847
Subject Area
Geology
Language of Instruction
Portuguese
Mode of Delivery
Face-to-face
Duration
SEMESTRIAL
ECTS Credits
6.0
Type
Compulsory
Level
1st Cycle Studies

Recommended Prerequisites

The sudant must have solid  knowledge of Mineralogy, General Geology, General Chemistry I, General Physics I, General Mathematics I, must be able to read English and to use the Excel.

Teaching Methods

Expositive theoretical lessons which are followed by examples and  the resolution of some questions. Practical-theoretical lessons, that precede the theoretical lessons, with the resolution of problems and practical demonstrations in the laboratory.

Learning Outcomes

1) The role of geochemistry in the development of Earth Sciences;
2) The origin of the chemical elements and the distribution of chemical elements on Earth and the laws governing such distribution;
3) The use of thermodynamics in solving geological problems;
4) Application of the rules of chemical equilibrium and chemistry of solutions to solve geological problems;
5) Geochemistry of igneous rocks and geochemical modeling;
6) The importance and use of Isotope Geochemistry and petrogenesis for the dating of igneous rocks;
7) To be able to establish and implement a plan for preparation of laboratory samples;
8) To be able to estimate the errors of chemical analysis and make comparisons between the errors of different methodologies.

Work Placement(s)

No

Syllabus

1.Cosmochemistry: the origin of the chemical elements

2.Distribution of the chemical elements in the Earth and crust

3.Geochemical classification of the elements

4.Thermodynamics applied to Geology

5.Chemical potential; activity; reaction contour; Construction of phase diagrams.

6.Kinetics and diffusion

7.Chemical reactions and chemical equilibrium.

8.Chemistry of solutions. Ionic potential and its importance in the exogenous processes.

9.Variation in the concentrations of dissolved ionic species as pH function.

10.Construction of Eh-pH diagrams

11.Chemical buffers most important in Geochemistry

12.Tectonomagmatic discrimination diagrams.

13.Geochemistry of igneous process.

14.Fractional crystallization, magma mixing and assimilation: modelling

15.Principles of Isotope Geochemistry

16.The Rb-Sr, Sm-Nd and U-Th-Pb systems.

17.Age calculation, initial isotopic ratios calculation and their interpretation.

18. Preparation of rock samples for chemical analysis.

19. Analytical errors.

Head Lecturer(s)

Maria Manuela da Vinha Guerreiro da Silva

Assessment Methods

Assessment
Frequency: 50.0%
Exam: 50.0%

Bibliography

Albarede, F. (2003). Geochemistry. Cambridge.

Allègre CJ (2008) Isotope Geology. Cambridge

Krauskopf, KB e Bird, DK (1995) Introduction to Geochemistry. McGraw-Hill.

Rudnick, R.L. (2004). Treatise on Geochemistry, vol. 3, The Crust. Elsevier.

Walther, JV (2005) Essentials of Geochemistry. Jones and Bartlett.

White, W.M. (2007) Geochemistry.

Apontamentos coligidos pela professora.

Artigos publicados em revistas científicas.