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Probing The Precambrian Geodynamo: Analysis Of The Geomagnetic Field Behavior And Calibration Of Pseudo-Thellier Paleointensity Method For Mesoproterozoic Rocks, Marine Foucher

Dissertations, Master's Theses and Master's Reports

Understanding the geomagnetic field direction and strength (e.g., paleomagnetism and paleointensity, respectively) recorded by Precambrian rocks is essential to obtain insight into the nature and evolution of the Earth’s early geodynamo and for constraining models of planetary evolution. Major milestones of our planet’s history, such as beginning of plate tectonics, development of the atmosphere and life, took place during the first four billion years. However, the available data on the Earth’s magnetic field in the Precambrian are very limited, especially the information about the field intensity which represents one of the most challenging aspect of paleomagnetic research. Many Precambrian rocks …