Lea Park and Belly River Formations of East-Central Alberta
Published:January 01, 1954
E. W. Shaw, S. R. L. Harding, 1954. "Lea Park and Belly River Formations of East-Central Alberta", Western Canada Sedimentary Basin: A Symposium; Sponsored by the Alberta Society of Petroleum Geologists, and the Saskatchewan Society of Petroleum Geologists, Leslie M. Clark
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Since the earliest geological investigations on the central Alberta plains, the transition of Upper Cretaceous Montanan deposits from continental beds in the west to marine beds in the east has presented great difficulties in both surface and subsurface mapping. Accelerated petroleum exploration activity in the past 5 years has resulted in a large amount of new subsurface information on which to determine stratigraphical relationships. This paper describes and illustrates with one map and three cross sections, these relationships for the Lea Park and Belly River formations; the younger Bearpaw and Edmonton formations also enter into the discussions insofar as they are involved in the main subject.
The interfingering of the marine Lea Park formation with the predominantly non-marine Belly River formation makes possible the recognition of ten members which are somewhat arbitrarily placed in the latter formation. Each of these members has been described previously but most of them have been given more than one name because of uncertainties in correlation between localities. The present study, aided by a greater density of subsurface data, has, it is sincerely believed, succeeded in making sufficiently accurate correlations throughout east-central Alberta to justify discarding several local formation and member names. The correlations are based on lithologic, microfaunal, and elec- tric-log data, although the cross-section illustrations include only the last criteria.
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Western Canada Sedimentary Basin: A Symposium; Sponsored by the Alberta Society of Petroleum Geologists, and the Saskatchewan Society of Petroleum Geologists
An enormous asymmetric structural and sedimentary basin with the deepest part along the eastern margin of the highly disturbed foothills belt of the Rocky Mountains, the Western Canada sedimentary basin is detailed in this volume. It consists of 30 papers dealing with the petroleum geology of the basin, with most of the papers deal with the area south of the Northwest Territories. The geological history of the area is covered, as well as topics such as: regional stratigraphic analysis, paleontological correlations, structural interpretations, folded faults, and the tar sands of Athabaska River.