OCG 421 PALEOCEANOGRAPHY

3 Hours/Week, 3 Credits

1. Palaeo-oceanography: meaning, scope, multidisciplinary approach, and importance to study. 2. Palaeo-oceanic Environment: its extents, duration, characteristics and framework. 3. Geomorphological Evidences: Underwater landform, trenches, terraces, ridges, sea-floor spreads, rift-valley. 4. Lithological Evidences: Marine deposits, Facies and Beddings; Palaeosols; and Ice-core stratigraphy: 5. Biological Evidence: Pollen analysis; Diatom analysis; Foraminifera Analysis; Plant and Animal Macrofossils. 6. Chronological Evidences: 14C dating; Uraneoum series dating; Dendrochronology, varve chronology. 7. Marine Oxygen Isotopic Stages: Principles, Calculation, Implication, Land-Ocean interface. 8. Climatic changes in the Past: Causes and signi ficance; glacial periods; sea-level changes; human evolution and migration. 9. Palaeo-Oceanography of Bay of Bengal: Quaternary Lithology. Coastal and Ocean Stratigraphy; Climate change; Palaeo-monsoon, Quaternary sea-level changes; Palaeo-shoreline changes; landforms and correlation, human occupancies. Recommended Books: 1. J.J. Lowe and M.J.CV. Walker Reconstructing Quaternary Environment 1997 2. N. Robert The Holocene; An environmental History 1989 3. M.H. Monsur, 1995. An Introduction to the Quaternary Geology of Bangladesh. 4. M. Shahidul Islam (2001) Sea-Level Changes of Bangladesh: Last Ten Thousand years: Asiatic Society of Bangladesh.