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Pop Quiz. Sedimentology - Rounding & Sphericity. Objectives:. Observe & record what you see. What is the dominant condition ( Can you see the forest for the trees? ) Understand what you observe : implications (circumstances of deposition) ;

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  1. Pop Quiz Sedimentology - Rounding & Sphericity

  2. Objectives: Observe & record what you see. • What is the dominant condition ( Can you see the forest for the trees? ) • Understand what you observe : implications (circumstances of deposition) ; interpret (PM - Kind)

  3. For each of the following images: Using the following table, assign appropriate Roundness and Sphericity classes: [ refer to slide 30, Module 4: Sedimentology, or p. 2-39 in Field Book for Sampling … (ver. 2) ]

  4. Sphericity 1 After Powers, 1953. 2 Numerical values below roundness and sphericity columns are class midpoints ( median rho values; Folk, 1955 ) used in statistical analysis. ( p. 2-39, Field Book … ; Schoeneberger, et al, 2002 )

  5. (Degree of ) Rounding?

  6. (Degree of) Rounding?:

  7. Schoeneberger (Degree of) Rounding?: (Type of) Packing?: PM: consolidated laharLava Cap Winery, CA

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