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Table of contents
Chapter 1. Intoduction
1.1. The Atlas-Meseta orographic system: a geologic overview
1.2. The Atlas-Meseta orographic system: open questions
1.3. Cosmogenic nuclides: an overview
1.4. Motivations and descriptions of thesis chapters
1.5. References
Chapter 2. Lithological control on erosional dynamics in a tectonically inactive mountain belt (Anti Atlas, Morocco)
2.1. Abstract
2.2. Introduction
2.3. Anti-Atlas and Siroua Massif
2.4. Methods
2.4.1. Stream profiles, network and topographic analysis
2.4.2. 10Be-derived denudation rates
2.4.3. Erosion rates from incised lava flows
2.5. Results
2.5.1. Regional topographic analysis
2.5.2. Denudation rates across time scales
2.5.3. Basin-scale topographic analysis
2.6. Discussion
2.6.1. Erosional steady state landscape
2.6.2. Lithological control on erosional dynamics
2.6.3. Quantification of the bedrock erodibility parameter (K)
2.6.4. Possible impact of climate on K values in tectonically inactive settings
2.7. Conclusions
2.8. Acknowledgments
2.9. References
Chapter 3. Large wavelength surface uplift in the Anti-Atlas and the Siroua Massif (Morocco): Insights into topographic rejuvenation of a tectonically inactive mou
3.1. Abstract
3.2. Introduction
3.3. Geological background
3.3.1. Geological setting
3.3.2. Geophysical and petrological data
3.4. Methods
3.4.1. River profile and topographic analysis
3.4.2. Knickpoints discretization and celerity model
3.4.3. River projections and linear inverse method
3.5. Results
3.5.1. Topographic analysis
3.5.2. River morphology
3.5.3. Magnitude of fluvial incision
3.5.4. River projection
3.5.5. Linear inverse method
3.5.6. Timescales of knickpoint migration
3.6. Discussion
3.6.1. Significance of the transient topography
3.6.2. Topographic evolution and surface uplift history of Anti-Atlas
3.6.3. Topographic evolution and surface uplift history of Siroua Massif
3.6.4. Causes of surface uplift and topographic expression of the Anti-Atlas and Siroua Massif
3.7. Conclusion
3.8. Acknowledgments
3.9. References
Chapter 4. Erosional dynamics and surface uplift in a rejuvenated landscape: Insights from the Western Moroccan Meseta
4.1. Abstract
4.2. Introduction
4.3. Geological setting
4.4. Methods
4.4.1. Topographic, stream profiles and knickpoints analysis
4.4.2. 10Be-derived denudation rates
4.5. Results
4.5.1. Topographic analysis
4.5.2. River morphology
4.5.4. 10Be-derived denudation rates
4.5.5. Basin-wide denudation rates versus topographic metrics
4.6. Discussion
4.6.1. Transient topography in Western Moroccan Meseta and Middle Atlas
4.6.2. Erosional dynamics in a rejuvenated landscape
4.6.3. Topographic evolution and surface uplift
4.7. Conclusion
4.8. Acknowledgments
4.9. References
Chapter 5. General conclusions
