Geodynamics

The Geodynamics EU combines the presentation, study, and characterization of the major processes associated with the geodynamics of the solid Earth: mantle dynamics, plate tectonics, plate boundaries (detachment, subduction, collisions, oceanic spreading), and intraplate regions. These systems and processes are studied through natural examples at the scale of the crust and the lithosphere, with an emphasis on integrating the various data and tools used in Earth sciences (geophysics, geochemistry, structural geology, rock mechanics, petrology, etc.). Note: The hydrosphere, biosphere, and atmosphere are not covered.

The lectures are accompanied by tutorials focused on the analysis and synthesis of documents to characterize geodynamic processes, drawing on concepts covered in geosciences since the first semester.

Hourly volumes:

CM: 3:00 p.m.

TD: 9:00 p.m.

Objectives*:

Description, study, and understanding of the major geodynamic processes that shape and affect the Earth's solid interior. Understanding the dynamics of these systems, their evolution over time, and their interactions.

Basic knowledge (L1 and L2 levels) in Earth sciences (structural geology, geophysics, geochemistry, sedimentology, etc.)

Comprehensive ongoing assessment (tutorial reports, written exams)

Brief description of the concepts covered in fourth grade:

• Introduction: Paleoreconstructions, Kinematic Relationships and Driving Forces
• Convection and Mantle Dynamics, Asthenosphere–Lithosphere Interactions
• Plate Kinematics (velocity space, triple point, Eulerian pole, partitioning)
• Detachment—Deformation Modes, Distribution of Deformation and Seismicity: Rift, Ridge, Expansion, and Cooling of the Oceanic Lithosphere
• Subduction – Dynamics, Force Balance, Deformation, and GPS Data from the Arc and Back-Arc Regions
• Collision—Integration of Geology, Tectonics, and Dynamics
• Intra-plate properties (rheology, GIA, viscosity)

Understanding How Geodynamic Processes Affecting the Solid Earth Work

Understanding How Large Plate Boundary Systems Work

Be able to integrate data and information from all fields of Earth sciences to characterize the geodynamics of the solid Earth

Be able to place natural examples within their theoretical framework (plate tectonics, equilibrium of forces, etc.)