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Evolution of the Var valley landscape

Evolution of the Var valley landscape. Philippe AUDRA. GLOMAR CHALLENGER 1970 Deep Sea Drilling Project. Evaporites ≈ 5 Ma. N. Spain. Morocco. 3 (5.3 Ma). 2 (T < 0.5 Ma). 1 (5.9 Ma). Deep -basin, shallow -water model [ Hsü , Cita & Ryan, 1973]. 5.3 Ma: The Flood!.

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Evolution of the Var valley landscape

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  1. Evolution of the Var valley landscape Philippe AUDRA

  2. GLOMAR CHALLENGER 1970 DeepSeaDrilling Project

  3. Evaporites ≈ 5 Ma

  4. N Spain Morocco

  5. 3 (5.3 Ma) 2 (T < 0.5 Ma) 1 (5.9 Ma) Deep-basin, shallow-water model [Hsü, Cita & Ryan, 1973]

  6. 5.3 Ma: The Flood!

  7. Deep canyons onshore Pô Danube Rhône Ebro Nile ?

  8. Nile valley (Egypt) / Aswan dam 900 km from shore / 200 m bsl.

  9. A virtual canyon!

  10. Canyon’sgeometry

  11. Canyon’sfill

  12. 100 km long Canyon

  13. Roya Loup Var Paillon -1500 m / 15 km (10 %!) Var mouth => Submarinedeep canyons

  14. Depth 1000 m

  15. Depth 350 m

  16. Seeyoutomorrow on the field! Meeting at8:00 be on time!!!

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