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COASTAL LANDFORMS Embayments Marine Terraces Sea Stacks

COASTAL LANDFORMS Embayments Marine Terraces Sea Stacks. Rocky Point. softer rock. hardest rock. Can I move now?. Franciscan Complex. Franciscan mélange exposed in fresh road cut. Franciscan mélange exposed in much older cut. Massive greywacke or chert “knockers” in mélange.

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COASTAL LANDFORMS Embayments Marine Terraces Sea Stacks

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  1. COASTAL LANDFORMS • Embayments • Marine Terraces • Sea Stacks

  2. Rocky Point softer rock

  3. hardest rock Can I move now?

  4. Franciscan Complex

  5. Franciscan mélange exposed in fresh road cut

  6. Franciscan mélange exposed in much older cut

  7. Massive greywacke or chert “knockers” in mélange

  8. Mélange knockers become stacks

  9. Mélange

  10. Mélange Serpentinite

  11. Franciscan Mélange • Terrigenous Sediment • Biogenous Sediment • Oceanic Crust / Mantle

  12. Mélange

  13. Aahhh… feels like Cretaceous meta-sandstone!

  14. Wacky?! Who you calling wacky? Meta-greywacke

  15. H20

  16. Quartz veining in greywacke

  17. Franciscan Mélange • Terrigenous Sediment • Biogenous Sediment • Oceanic Crust / Mantle

  18. Dredge haul off Nicaragua

  19. Wedgie Wannabes Limestone Red Chert Greenstone (basalt)

  20. Calcareous ooze

  21. Mostly calcareous ooze Calcium Carbonate Compensation Depth (CCCD) Mostly clay

  22. calcareous ooze

  23. Radiolarians

  24. Siliceous radiolarian ooze

  25. radiolarian ooze

  26. Siliceous radiolarian ooze

  27. Radiolarian “rain”

  28. Stupid siliceous ooze! So hard to roll.

  29. Folded Red Chert (Radiolarian)

  30. Black chert (organic rich)

  31. Franciscan Mélange • Terrigneous Sediment • Pelagic Sediment • Oceanic Crust / Mantle

  32. Mélange close-up Argillite (clay shale) Greenstone (basalt) Sandstone

  33. Hot springs

  34. H2O

  35. Serpentinite

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