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Book Chapter

Part 6: Summary and Conclusions

Published:
January 01, 1999

Abstract

Isolated linear sand bodies in the Cretaceous Western Interior Seaway have been remarkably resistant to a consensus interpretation. The best known of these deposits is the Shannon Sandstone, the primary focus of this volume and the SEPM Research Conference from which it derived. Our purpose in this summary paper is to attempt an objective evaluation of the various interpretations for the Shannon, given our own backgrounds, experience, and resultant biases. We are not charged with coming up with our own model for this enigmatic deposit and its isolated linear sand body siblings. We compare and find substantial differences in the investigators' perceptions of the Shannon in outcrop in the Salt Creek anticline area in northeastern Wyoming and in the subsurface in the relatively nearby Hartzog Draw Field. We examine their interpretations in light of modern analogues and paleogeographic constraints and conclude that no interpretation proposed to date adequately explains all aspects of the Shannon. We suspect that the Shannon Sandstone may be more complex than previously thought and that a single interpretation may not be sufficient to explain the whole system. We also came away with renewed respect for the principle of multiple working hypotheses.

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SEPM Special Publication

Isolated Shallow Marine Sand Bodies: Sequence Stratigraphic Analysis and Sedimentologic Interpretation

Katherine M. Bergman
Katherine M. Bergman
Department of Geology University of Regina Regina SK S4S OA2 Canada
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John W. Snedden
John W. Snedden
Mobil Exploration & Producing Technical Center PO Box 650232 Dallas TX 75265USA
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SEPM Society for Sedimentary Geology
Volume
64
ISBN electronic:
9781565761865
Publication date:
January 01, 1999

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