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Sedimentary Structures

Sedimentary Structures. Asymmetrical Ripples and Small Scale Cross Stratification. Animation. Large Scale Cross Stratification. Graded Bedding. Rapid deposition of suspended sediment Commonly associated with turbidity currents Occurs in may depositional environments.

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Sedimentary Structures

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  1. Sedimentary Structures

  2. Asymmetrical Ripples and Small Scale Cross Stratification Animation

  3. Large Scale Cross Stratification

  4. Graded Bedding • Rapid deposition of suspended sediment • Commonly associated with turbidity currents • Occurs in may depositional environments

  5. Halite and Gypsum Crystal Molds, Casts and Pseudomorphs Evaporation concentrates brine. Evaporite minerals precipitate and displace surrounding sediment. Later, evaporites dissolve or are replaced by less soluble minerals.

  6. Symmetrical Ripples

  7. Oriented Fossils Elongate fossils are aligned by currents post mortem.

  8. Tool Marks vs. Striations

  9. Root Casts

  10. Concretions

  11. Flute Casts

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