Climate,shelf geometry and glacially-forced sea level changes all influenced sediment
supply,depositional patterns,accommodation and stabilization of both the marine and
continental sediments.The Hugoton shelf was near the paleo-equator(Figure 3.1)and
monsoonal climate conditions are likely to have prevailed at the annual scale(Parrish and
Peterson,1988).Generally arid conditions accompanied glacially induced sea-level
lowstands with more humid conditions and high sea level present during interglacial
periods(Rankey,1997;Soreghan,2002).Prevailing winds are thought to have been from
the present-day west during winter and east during summer(Parrish and Peterson,1988).
Extremely low relief enabled rapid migration of the shoreline position and changes in
shelf hydrodynamics with only minimal absolute changes in sea level(as little as 30 m).
These conditions set the stage for the vertical succession of lithofacies repeated from one
sedimentary cycle to the next as well as the remarkable lateral continuity of thin
lithofacies units within each cycle.