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Chap. 1 Karst development and speleogenesis

Introduction: the initial conditions. Progressive permeability / porous aquifers5 conditions:Soluble and fissured rock (limestone?)Water (solvent, transport)Acidity (CO2 from vegetation)Hydraulic headand time?Large karst development in:Wet regions (rain vegetation)Mountains (topographic

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Chap. 1 Karst development and speleogenesis

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    2. Introduction: the initial conditions Progressive permeability / porous aquifers 5 conditions: Soluble and fissured rock (limestone…) Water (solvent, transport) Acidity (CO2 from vegetation) Hydraulic head and time… Large karst development in: Wet regions (rain + vegetation) Mountains (topographic gradient) / plateau (long evolution)

    3. Karst development and speleogenesis 1 – An organized aquifer 2 – An evolutive dynamic 3 – Vertical cave pattern

    4. An organized aquifer 1.1. Karst inception

    5. An organized aquifer 1.2. Vertical organization

    6. An organized aquifer 1.2. Vertical organization

    7. An organized aquifer 1.3. Perched vs. dammed karst

    8. 2. An evolutive dynamic 2.1. Information from recession curves

    9. 2. An evolutive dynamic 2.2. Exchanges: drain ? annex systems

    10. 2. An evolutive dynamic 2.3. Karst aquifers classification [after Mangin]

    11. 3. Vertical cave pattern 3.1. Main types of vertical cave pattern

    12. 3. Vertical cave pattern 3.1. Main types of vertical cave pattern

    13. 3. Vertical cave pattern 3.1. Main types of vertical cave pattern

    14. 3. Vertical cave pattern 3.1. Main types of vertical cave pattern

    15. 3. Vertical cave pattern 3.1. Main types of vertical cave pattern

    16. 3. Vertical cave pattern 3.2. Influence of base level changes

    17. 3. Vertical cave pattern 3.2. Influence of base level changes (lowering)

    18. 3. Vertical cave pattern 3.2. Influence of base level changes (rising)

    19. 3. Vertical cave pattern 3.2. Influence of base level changes (rising)

    20. 3. Vertical cave pattern 3.2. Influence of base level changes (rising)

    21. Conclusion

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