GEOL 462: Principles of Sedimentology and Stratigraphy
Lecture 15: Thursday, March 12, 2009
Topics
1. Carbonate cycles in Rimmed shelves
2. Carbonate Ramps (or open shelves)
3. Identifying features of shallowing-upward cycles
4. References for the project
Carbonate cycles in Rimmed shelves
1. Depositional models (cycles) of tidal flats
2. Depositional models (cycles) of lagoon
3. Depositional models of shelf margin: reefs, shoals, and microbial complexes
Carbonate Ramps (and open shelves)
1. Differences and similarities between rimmed shelfs and ramps (open shelves)
2. Depositional models of ramps and open shelves
Identifying features of shallowing-upward cycles
1. Mud cracks and brecciation
2. Fenestral microbial laminae
3. Dissolution features
4. Tepees and pisolites
5. Terrestrial particles or erosion
6. Paleosol (calcrete)
7. Dolomitization and evaporites
8. Change of microbial structures (stromatolite sequences)
References for cycles: (you may read some of these for your project)
1. Beavington-Penney, S.J., Wright, V.P., and Racey, A., 2006, The Middle Eocene Seeb Formation of Oman: An Investigation of Acyclicity, Stratigraphic Completeness, and Accumulation Rates in Shallow Marine Carbonate Settings: Journal of Sedimentary Research, v. 76, p. 1137-1161.
2. Benedictis, D.D., Bosence, D.A.N., and Waltham, D., 2007, Tectonic control on peritidal carbonate parasequence formation: an investigation using forward tectono-stratigraphic modelling: Sedimentology, v. 54, p. 587-605.
3. Spence, G.H., and Tucker, M.E., 2007, A Proposed Integrated Multi-Signature Model for Peritidal Cycles in Carbonates: Journal of Sedimentary Research, v. 77, p. 797-808.
4. Burgess, P.M., 2008, The nature of shallow-water carbonate lithofacies thickness distributions: Geology, v. 36, p. 235-238.
5. Soreghan, G.S., and Dickinson, W.R., 1994, Generic types of stratigraphic cycles controlled by eustasy: Geology, v. 22, p. 759-761.
6. Mallarino, G., Goldstein, R.H., and Di Stefano, P., 2002, New approach for quantifying water depth applied to the enigma of drowning of carbonate platforms: Geology, v. 30, p. 783-786.