Abstract
Examination of nearly 4,000 m of core from more than 180 wells clearly demonstrates that fluvial processes were insignificant in deposition of the Mannville Group (Lloydminster member and above) in the Lloydminster area of Saskatchewan (R18W3-28W3, T44-54). Previous fluvial models are based primarily on the presence and geometry of channels interpreted from geophysical well logs. With rare exceptions, however, well spacing and core data are inadequate to prove a fluvial origin of such features, if they exist at all. A notable exception is an unequivocal channel deposit in the Waseca Formation in the Pikes Peak-Lashburn area. However, the nature of adjacent strata, the presence of numerous clay drapes within the deposit and its dimensions ( End_of_Article - Last_Page 596------------
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