Estuarine valley fills in the Lower Cretaceous Bluesky Formation, Edson area, Alberta

The Lower Cretaceous Bluesky sandbodies at Edson and Pine Creek trend southwest-northeast, parallel to the barrier and lowstand shoreline sandbodies of the Glauconite Member at Hoadley and Pembina/Bigoray. However, the Edson sandbodies have erosive channellized bases that cut down into brackish water ostracod-bearing shales and sandstones and into the Gething Formation. Six separate incised-valley sandbodies have been mapped at Edson/Pine …