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Tropical and sub-tropical West Africa : marine and continental changes during the late Quaternary /
West Africa and the eastern Atlantic stretching from Mauritania in the north to Namibia in the south offer a large latitudinal stretch incorporating nearly symmetrical climatic gradients from the Equator. On the time scale of Quaternary Glacial and Interglacial cycles, today, we possess well-documen...
| Clasificación: | Libro Electrónico |
|---|---|
| Autor principal: | |
| Formato: | Electrónico eBook |
| Idioma: | Inglés |
| Publicado: |
Amsterdam, the Netherlands :
Elsevier,
�2008.
|
| Edición: | 1st ed. |
| Colección: | Developments in Quaternary science ;
10. |
| Temas: | |
| Acceso en línea: | Texto completo Texto completo Texto completo |
Tabla de Contenidos:
- Part A. Present Terrestrial Environments. 1. Geological and morphological setting. 2. Climatic mechanisms and climates. 3. Present vegetation of tropical West Africa. 4. Present fluxes of suspended and dissolved matter in rivers. Part B. Present Oceanic environment. 1. Atlantic ocean circulation
- Leakage with climate fluctuations. 2. Suspended matter and particle fluxes in the Eastern Gulf of Guinea. 3. Present oceanic deposition. Part C. 1. Changes deduced from stable oxygen and carbon isotopes and from alkenones in deep sea sediments. 2. Changed deduced from markers of surface ocean productivity. 3. Changes deduced from pollen. 4. Changed deduced from atmospheric dust transport. 5. Changed deduced from deposition processes. Part D. 1. Sea level fluctuation on the Atlantic coast of Africa during the past 125,000. 2. Successive continental shelf sedimentation related to climatic and sea level changes. Part E. Terrestrial evidence of late quaternary changes. 1. Records in lake deposits. 2. Pedological and geomorphological processes and their palaeoenvironmental significance. Part F. Climatic evolution and human presence. 1. Lithic artifact dating and environmental context. 2. Landscape and human development implication. 3. Anthropic action and global change.
- pt. 1. Present terrestrial environments: Geological and morphological setting
- Atmospheric circulation, climatic mechanisms and African climate
- Characteristics of the soils and present day vegetation of tropical West Africa
- Present fluxes of suspended and dissolved matter in rivers
- Present aeolian dust transport
- pt. 2. Present oceanic environments: Atlantic Ocean circulation : leakage with climate fluctuations
- Suspended matter and particle fluxes in the eastern Atlantic
- Present oceanic deposition
- pt. 3. Deep-sea record of Late Quaternary change: Changes deduced from foraminiferal assemblages, their isotopic composition and from alkenones
- Changes deduced from other plantonic components
- An attempt to model glacial-Holocene contrasts in surface waters of the eastern Atlantic
- Changes deduced from pollen
- Changes deduced from atmospheric dust transport
- Changes deduced from carbonate depositional system
- Changes deduced from other biogenic components
- Changes deduced from clay mineral assemblages
- Sediment accumulation rates and fluxes
- pt. 4. Land-ocean boundary : continental shelf and shoreline records of Late Quaternary changes: Sea level fluctuation on the Atlantic margin of Africa during the past 125,000 years
- Successive continental shelf sedimentation related to climatic and sea level changes
- Neoformation processed (green clay grains, phosphate, and carbonate)
- pt. 5. Terrestrial evidence of Late Quaternary changes: Records in lake deposits
- Inferences from coastal peats, soils, alluvial deposits and other terrestrial evidences
- pt. 6. Climatic evolution and human presence: Lithic artifact dating and environmental context
- Landscape and recent human development implications
- Anthropogenic action and global change.