Variability of Shelf Delta-Estuary Complexes on Shelf-Margin and Ramp Platforms
Carlos A. Uroza,
The University of Texas at
In pre-Modern coastline successions
repeated regression and transgression produce clastic
tongues that are deltas/strandplains in their lower
part and estuary/barrier in their upper part
This research involves outcrop analysis from four different locations: 1- Eocene Battfjellet Formation, West Spitsbergen, Norway, where two clinoforms showing shelf to slope transition are targeted; 2- Campanian McCourt Tongue, Rock Springs Formation, Wyoming-Utah (deposited on an inner-shelf ramp setting); 3- Pliocene Paleo-Orinoco Delta, Trinidad, which represent thick shelf-edge deltas developed on a growth fault province (the impact of high subsidence on the architecture and geometry of the sandbodies will be examined); and 4- Campanian Haystack Mountains Formation, Wyoming, where the character of lowstand deltas developed on a ramp setting will be evaluated.