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SEDIMENTARY ARCHIVES

SEDIMENTARY ARCHIVES. Terrestrial or Continental Environments. SEDIMENTARY ARCHIVES. Terrestrial or Continental Environments. Fluvial. SEDIMENTARY ARCHIVES. Continental Environments Fluvial. Silt, Sand, Clay. Few fossils. Point Bar. SEDIMENTARY ARCHIVES.

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SEDIMENTARY ARCHIVES

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  1. SEDIMENTARY ARCHIVES Terrestrial or Continental Environments

  2. SEDIMENTARY ARCHIVES Terrestrial or Continental Environments Fluvial

  3. SEDIMENTARY ARCHIVES Continental Environments Fluvial Silt, Sand, Clay Few fossils Point Bar

  4. SEDIMENTARY ARCHIVES Terrestrial or Continental Environments Sediments highly variable, depends on energy of river

  5. SEDIMENTARY ARCHIVES Terrestrial or Continental Environments Alluvial fans

  6. SEDIMENTARY ARCHIVES Terrestrial or Continental Environments Lakes or Lacustrine

  7. SEDIMENTARY ARCHIVES Terrestrial or Continental Environments Lakes or Lacustrine

  8. SEDIMENTARY ARCHIVES Terrestrial or Continental Environments Glacial

  9. SEDIMENTARY ARCHIVES Terrestrial or Continental Environments Glacial

  10. SEDIMENTARY ARCHIVES Terrestrial or Continental Environments Glacial Outwash Till

  11. SEDIMENTARY ARCHIVES Terrestrial or Continental Environments Eolian

  12. SEDIMENTARY ARCHIVES Terrestrial or Continental Environments Eolian

  13. SEDIMENTARY ARCHIVES Terrestrial or Continental Environments Eolian Wind can move sediment Sand size or smaller Very well sorted

  14. SEDIMENTARY ARCHIVES Sedimentary Structures Formed during or shortly after deposition Prior to lithification Can be used to interpret environments "The question is not what you look at, but what you see"                 Henry David Thoreau       November 1830

  15. SEDIMENTARY ARCHIVES Sedimentary Structures Mudcracks

  16. SEDIMENTARY ARCHIVES Sedimentary Structures

  17. SEDIMENTARY ARCHIVES Sedimentary Structures

  18. SEDIMENTARY ARCHIVES Sedimentary Structures Ripples Indicate direction Uni-directional = asymmetrical or current Bi-directional = symmetrical or oscillation Multi-directional = interference Found in shallow marine water and streams

  19. SEDIMENTARY ARCHIVES Sedimentary Structures Ripples Oscillation Ripples Up direction?

  20. SEDIMENTARY ARCHIVES Sedimentary Structures Ripples Current Ripples

  21. SEDIMENTARY ARCHIVES Sedimentary Structures

  22. SEDIMENTARY ARCHIVES Sedimentary Structures Ripples Interference Ripples

  23. SEDIMENTARY ARCHIVES Sedimentary Structures Cross-bedding or Cross-stratification

  24. SEDIMENTARY ARCHIVES Sedimentary Structures Cross-bedding or Cross-stratification Beds in which one set is inclined to others Advance of delta or dunes Current dominated environment Wind or water Slope of cross-bed can indicates current or prevailing wind direction

  25. SEDIMENTARY ARCHIVES Sedimentary Structures Cross-bedding or Cross-stratification Tabular or Planar

  26. SEDIMENTARY ARCHIVES Sedimentary Structures Cross-bedding or Cross-stratification Trough

  27. SEDIMENTARY ARCHIVES Sedimentary Structures Graded beds

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