Topics
1. Flow regimes and bedding structures
2. Bedding descriptions
3. Wave vs. current ripples
4. Storm waves and high-density flows
5. Summary of sedimentary structures
Read the following table, explain the origin of each type of sedimentary structures.
If you don't know how to explain these structures, you need to ask questions in the classroom!
From: Boggs, S., Jr., 2006, Principles of Sedimentology and Stratigraphy, Prentice Hall, New Jersey. p. 75, Table 4.1.
Reading assignments for Lecture 06, Thursday: Density flows and Hummocky cross-stratification
1. Shanmugam, G., 1996, High-density turbidity currents; are they sandy debris flows?: Journal of Sedimentary Research, v. 66, p. 2-10. PDF
2. Kneller, B.C., and Branney, M.J., 1995, Sustained high-density turbidity currents and the deposition of thick massive sands: Sedimentology, v. 42, p. 607-616. PDF
3. Klein, G.d., Marsaglia, K.M., Swift, D.J.P., Nummedal, D., and Duke, W.L., 1987, Hummocky cross-stratification, tropical hurricanes, and intense winter storms: Sedimentology, v. 34, p. 333-359. PDF
4. Sherman, D.J., and Greenwood, B., 1989, Hummocky cross-stratification and post-vortex ripples; length scales and hydraulic analysis: Sedimentology, v. 36, p. 981-986. PDF
5. Duke, W.L., Arnott, R.W.C., and Cheel, R.J., 1991, Shelf sandstones and hummocky cross-stratification; new insights on a stormy debate: Geology, v. 19, p. 625-628. PDF
6. Ito, M., Ishigaki, A., Nishikawa, T., and Saito, T., 2001, Temporal variation in the wavelength of hummocky cross-stratification; implications for storm intensity through Mesozoic and Cenozoic: Geology, v. 29, p. 87-89. PDF
7. Dumas, S., and Arnott, R.W.C., 2006, Origin of hummocky and swaley cross-stratification--The controlling influence of unidirectional current strength and aggradation rate: Geology, p. 1073-1076. PDF